./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/mutex-meet/rfi000_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 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/rfi000_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-05-21_14-57-05.files/mutex-meet/rfi000_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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 15:34:35,521 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 15:34:35,588 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 15:34:35,594 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 15:34:35,594 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 15:34:35,617 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 15:34:35,618 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 15:34:35,618 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 15:34:35,619 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 15:34:35,622 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 15:34:35,622 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 15:34:35,622 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 15:34:35,622 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 15:34:35,623 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 15:34:35,624 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 15:34:35,624 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 15:34:35,624 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 15:34:35,625 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 15:34:35,625 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 15:34:35,625 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 15:34:35,625 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 15:34:35,626 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 15:34:35,626 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 15:34:35,626 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 15:34:35,626 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 15:34:35,626 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 15:34:35,627 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 15:34:35,627 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 15:34:35,627 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 15:34:35,628 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 15:34:35,629 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 15:34:35,629 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 15:34:35,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 15:34:35,629 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 15:34:35,629 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 15:34:35,629 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 15:34:35,630 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 15:34:35,630 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 15:34:35,630 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 15:34:35,630 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 15:34:35,630 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 15:34:35,631 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 15:34:35,631 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 15:34:35,631 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 15:34:35,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 15:34:35,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 15:34:35,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 15:34:35,876 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 15:34:35,877 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 15:34:35,878 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i [2024-06-14 15:34:36,868 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 15:34:37,044 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 15:34:37,045 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i [2024-06-14 15:34:37,062 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/055082956/4bc1bc9606334d9ba27de949bdeac18d/FLAG9e4088ea4 [2024-06-14 15:34:37,073 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/055082956/4bc1bc9606334d9ba27de949bdeac18d [2024-06-14 15:34:37,075 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 15:34:37,075 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 15:34:37,076 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/rfi000_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-14 15:34:37,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 15:34:37,204 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 15:34:37,205 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 15:34:37,205 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 15:34:37,210 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 15:34:37,210 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 03:34:37" (1/2) ... [2024-06-14 15:34:37,211 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c7abe50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 03:34:37, skipping insertion in model container [2024-06-14 15:34:37,212 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 03:34:37" (1/2) ... [2024-06-14 15:34:37,213 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4506c0c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 03:34:37, skipping insertion in model container [2024-06-14 15:34:37,213 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 03:34:37" (2/2) ... [2024-06-14 15:34:37,214 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c7abe50 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 03:34:37, skipping insertion in model container [2024-06-14 15:34:37,214 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 03:34:37" (2/2) ... [2024-06-14 15:34:37,214 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 15:34:37,277 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 15:34:37,279 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] (((((((((((((((! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd2 >= 0LL && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$w_buff0) + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice2 >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )y$flush_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$mem_tmp >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff1 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice0 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice2 >= 0LL) && (long long )x + (long long )y >= 0LL) && (long long )x + (long long )y$flush_delayed >= 0LL) && (long long )x + (long long )y$mem_tmp >= 0LL) && (long long )x + (long long )y$r_buff0_thd0 >= 0LL) && (long long )x + (long long )y$r_buff0_thd2 >= 0LL) && (long long )x + (long long )y$r_buff1_thd0 >= 0LL) && (long long )x + (long long )y$r_buff1_thd2 >= 0LL) && (long long )x + (long long )y$read_delayed >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff1 >= 0LL) && (long long )y + (long long )y$flush_delayed >= 0LL) && (long long )y + (long long )y$mem_tmp >= 0LL) && (long long )y + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y + (long long )y$read_delayed >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff1 >= 0LL) && (long long )y$flush_delayed + (long long )y$mem_tmp >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$flush_delayed + (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$mem_tmp + (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff1 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )x >= 0LL) && (long long )weak$$choice0 + (long long )y >= 0LL) && (long long )weak$$choice0 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice0 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )weak$$choice2 >= 0LL) && (long long )weak$$choice2 + (long long )x >= 0LL) && (long long )weak$$choice2 + (long long )y >= 0LL) && (long long )weak$$choice2 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice2 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff1 >= 0LL) && (2LL + (long long )__unbuffered_cnt) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )__unbuffered_cnt) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )__unbuffered_p1_EBX) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )__unbuffered_p1_EBX) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )main$tmp_guard1) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )main$tmp_guard1) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )x) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )x) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$flush_delayed) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$flush_delayed) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$mem_tmp) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$mem_tmp) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff0_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff0_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff0_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff0_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff1_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff1_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff1_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff1_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$read_delayed) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$read_delayed) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )weak$$choice0) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )weak$$choice0) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )weak$$choice2) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )weak$$choice2) - (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd2) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) - (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd2) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )y$r_buff0_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff0_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$r_buff0_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff0_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$r_buff1_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff1_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$r_buff1_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff1_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$read_delayed) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$read_delayed) - (long long )y$w_buff1 >= 0LL) && (4LL - (long long )y$w_buff0) - (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$read_delayed >= 0LL) && (long long )x - (long long )y$r_buff0_thd0 >= 0LL) && (long long )x - (long long )y$r_buff0_thd2 >= 0LL) && (long long )x - (long long )y$r_buff1_thd0 >= 0LL) && (long long )x - (long long )y$r_buff1_thd2 >= 0LL) && (long long )x - (long long )y$read_delayed >= 0LL) && (long long )y - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y - (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$flush_delayed - (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$mem_tmp - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$read_delayed >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice0 - (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice2 - (long long )y$read_delayed >= 0LL)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p1_EAX) && 0 <= __unbuffered_p1_EBX) && 0 <= x) && 0 <= y) && 0 <= y$mem_tmp) && 0 <= y$w_buff0) && 0 <= y$w_buff1) && __unbuffered_p1_EAX <= 127) && __unbuffered_p1_EBX <= 127) && y <= 127) && y$mem_tmp <= 127) && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 % 2 == 0) && y$w_buff1 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-14 15:34:37,279 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] (((((((((((((((! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd2 >= 0LL && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$w_buff0) + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice2 >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )y$flush_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$mem_tmp >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff1 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice0 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice2 >= 0LL) && (long long )x + (long long )y >= 0LL) && (long long )x + (long long )y$flush_delayed >= 0LL) && (long long )x + (long long )y$mem_tmp >= 0LL) && (long long )x + (long long )y$r_buff0_thd0 >= 0LL) && (long long )x + (long long )y$r_buff0_thd2 >= 0LL) && (long long )x + (long long )y$r_buff1_thd0 >= 0LL) && (long long )x + (long long )y$r_buff1_thd2 >= 0LL) && (long long )x + (long long )y$read_delayed >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff1 >= 0LL) && (long long )y + (long long )y$flush_delayed >= 0LL) && (long long )y + (long long )y$mem_tmp >= 0LL) && (long long )y + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y + (long long )y$read_delayed >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff1 >= 0LL) && (long long )y$flush_delayed + (long long )y$mem_tmp >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$flush_delayed + (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$mem_tmp + (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff1 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )x >= 0LL) && (long long )weak$$choice0 + (long long )y >= 0LL) && (long long )weak$$choice0 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice0 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )weak$$choice2 >= 0LL) && (long long )weak$$choice2 + (long long )x >= 0LL) && (long long )weak$$choice2 + (long long )y >= 0LL) && (long long )weak$$choice2 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice2 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff1 >= 0LL) && (2LL + (long long )__unbuffered_cnt) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )__unbuffered_cnt) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )__unbuffered_p1_EBX) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )__unbuffered_p1_EBX) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )main$tmp_guard1) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )main$tmp_guard1) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )x) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )x) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$flush_delayed) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$flush_delayed) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$mem_tmp) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$mem_tmp) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff0_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff0_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff0_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff0_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff1_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff1_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$r_buff1_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$r_buff1_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )y$read_delayed) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )y$read_delayed) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )weak$$choice0) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )weak$$choice0) - (long long )y$w_buff1 >= 0LL) && (2LL + (long long )weak$$choice2) - (long long )y$w_buff0 >= 0LL) && (2LL + (long long )weak$$choice2) - (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd2) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) - (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd2) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )y$r_buff0_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff0_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$r_buff0_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff0_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$r_buff1_thd0) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff1_thd0) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$r_buff1_thd2) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$r_buff1_thd2) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$read_delayed) - (long long )y$w_buff0 >= 0LL) && (2LL - (long long )y$read_delayed) - (long long )y$w_buff1 >= 0LL) && (4LL - (long long )y$w_buff0) - (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$read_delayed >= 0LL) && (long long )x - (long long )y$r_buff0_thd0 >= 0LL) && (long long )x - (long long )y$r_buff0_thd2 >= 0LL) && (long long )x - (long long )y$r_buff1_thd0 >= 0LL) && (long long )x - (long long )y$r_buff1_thd2 >= 0LL) && (long long )x - (long long )y$read_delayed >= 0LL) && (long long )y - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y - (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$flush_delayed - (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$mem_tmp - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$read_delayed >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice0 - (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice2 - (long long )y$read_delayed >= 0LL)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p1_EAX) && 0 <= __unbuffered_p1_EBX) && 0 <= x) && 0 <= y) && 0 <= y$mem_tmp) && 0 <= y$w_buff0) && 0 <= y$w_buff1) && __unbuffered_p1_EAX <= 127) && __unbuffered_p1_EBX <= 127) && y <= 127) && y$mem_tmp <= 127) && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 % 2 == 0) && y$w_buff1 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-14 15:34:37,280 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 15:34:37,280 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-14 15:34:37,319 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 15:34:37,646 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 15:34:37,654 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 15:34:37,912 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 15:34:37,937 INFO L206 MainTranslator]: Completed translation [2024-06-14 15:34:37,938 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 03:34:37 WrapperNode [2024-06-14 15:34:37,938 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 15:34:37,939 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 15:34:37,939 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 15:34:37,939 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 15:34:37,944 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 14.06 03:34:37" (1/1) ... [2024-06-14 15:34:37,971 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 14.06 03:34:37" (1/1) ... [2024-06-14 15:34:38,026 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 132 [2024-06-14 15:34:38,027 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 15:34:38,028 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 15:34:38,028 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 15:34:38,028 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 15:34:38,036 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 03:34:37" (1/1) ... [2024-06-14 15:34:38,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 03:34:37" (1/1) ... [2024-06-14 15:34:38,059 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 03:34:37" (1/1) ... [2024-06-14 15:34:38,086 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]. [2024-06-14 15:34:38,087 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 03:34:37" (1/1) ... [2024-06-14 15:34:38,087 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 03:34:37" (1/1) ... [2024-06-14 15:34:38,113 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 03:34:37" (1/1) ... [2024-06-14 15:34:38,115 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 03:34:37" (1/1) ... [2024-06-14 15:34:38,123 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 03:34:37" (1/1) ... [2024-06-14 15:34:38,126 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 03:34:37" (1/1) ... [2024-06-14 15:34:38,134 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 15:34:38,135 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 15:34:38,135 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 15:34:38,136 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 15:34:38,136 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 03:34:37" (1/1) ... [2024-06-14 15:34:38,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 15:34:38,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 15:34:38,166 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) [2024-06-14 15:34:38,188 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 [2024-06-14 15:34:38,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 15:34:38,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 15:34:38,200 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 15:34:38,201 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 15:34:38,201 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 15:34:38,201 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 15:34:38,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 15:34:38,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 15:34:38,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 15:34:38,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 15:34:38,203 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 15:34:38,340 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 15:34:38,342 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 15:34:38,999 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 15:34:38,999 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 15:34:39,177 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 15:34:39,178 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 15:34:39,179 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 03:34:39 BoogieIcfgContainer [2024-06-14 15:34:39,179 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 15:34:39,181 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 15:34:39,182 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 15:34:39,184 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 15:34:39,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 03:34:37" (1/4) ... [2024-06-14 15:34:39,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d6e872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 03:34:39, skipping insertion in model container [2024-06-14 15:34:39,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 03:34:37" (2/4) ... [2024-06-14 15:34:39,188 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d6e872 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 03:34:39, skipping insertion in model container [2024-06-14 15:34:39,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 03:34:37" (3/4) ... [2024-06-14 15:34:39,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d6e872 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 03:34:39, skipping insertion in model container [2024-06-14 15:34:39,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 03:34:39" (4/4) ... [2024-06-14 15:34:39,190 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_power.oepc_pso.oepc_rmo.oepc.i [2024-06-14 15:34:39,202 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 15:34:39,203 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 15:34:39,203 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 15:34:39,254 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 15:34:39,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-14 15:34:39,321 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-14 15:34:39,325 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 15:34:39,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 15:34:39,327 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-14 15:34:39,329 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-14 15:34:39,341 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 15:34:39,348 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;@2cbfe051, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 15:34:39,348 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 15:34:39,355 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 15:34:39,356 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-14 15:34:39,356 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 15:34:39,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:34:39,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 15:34:39,357 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:34:39,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:34:39,361 INFO L85 PathProgramCache]: Analyzing trace with hash -429952030, now seen corresponding path program 1 times [2024-06-14 15:34:39,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:34:39,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002963402] [2024-06-14 15:34:39,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:34:39,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:34:39,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:34:42,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:34:42,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:34:42,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002963402] [2024-06-14 15:34:42,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002963402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:34:42,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:34:42,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 15:34:42,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710100401] [2024-06-14 15:34:42,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:34:42,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 15:34:42,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:34:42,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 15:34:42,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 15:34:42,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 15:34:42,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:34:42,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:34:42,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 15:34:42,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:34:42,664 INFO L124 PetriNetUnfolderBase]: 216/387 cut-off events. [2024-06-14 15:34:42,664 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-14 15:34:42,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 387 events. 216/387 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1364 event pairs, 133 based on Foata normal form. 1/383 useless extension candidates. Maximal degree in co-relation 776. Up to 378 conditions per place. [2024-06-14 15:34:42,671 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 25 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-14 15:34:42,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 125 flow [2024-06-14 15:34:42,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 15:34:42,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 15:34:42,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-06-14 15:34:42,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-14 15:34:42,682 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 48 transitions. [2024-06-14 15:34:42,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 125 flow [2024-06-14 15:34:42,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 15:34:42,685 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-14 15:34:42,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-14 15:34:42,689 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-14 15:34:42,689 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-14 15:34:42,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:34:42,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:34:42,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:34:42,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 15:34:42,690 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:34:42,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:34:42,690 INFO L85 PathProgramCache]: Analyzing trace with hash -867008575, now seen corresponding path program 1 times [2024-06-14 15:34:42,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:34:42,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237858217] [2024-06-14 15:34:42,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:34:42,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:34:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:34:44,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:34:44,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:34:44,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237858217] [2024-06-14 15:34:44,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237858217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:34:44,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:34:44,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 15:34:44,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990728490] [2024-06-14 15:34:44,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:34:44,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 15:34:44,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:34:44,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 15:34:44,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-14 15:34:44,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 15:34:44,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:34:44,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:34:44,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 15:34:44,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:34:44,954 INFO L124 PetriNetUnfolderBase]: 213/382 cut-off events. [2024-06-14 15:34:44,955 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-06-14 15:34:44,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 382 events. 213/382 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1329 event pairs, 109 based on Foata normal form. 2/384 useless extension candidates. Maximal degree in co-relation 865. Up to 364 conditions per place. [2024-06-14 15:34:44,959 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 29 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-14 15:34:44,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 167 flow [2024-06-14 15:34:44,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 15:34:44,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 15:34:44,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2024-06-14 15:34:44,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-14 15:34:44,963 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 60 transitions. [2024-06-14 15:34:44,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 167 flow [2024-06-14 15:34:44,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 15:34:44,967 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-14 15:34:44,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-14 15:34:44,968 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-14 15:34:44,968 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-14 15:34:44,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:34:44,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:34:44,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:34:44,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 15:34:44,969 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:34:44,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:34:44,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1107460993, now seen corresponding path program 1 times [2024-06-14 15:34:44,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:34:44,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645226620] [2024-06-14 15:34:44,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:34:44,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:34:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:34:46,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:34:46,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:34:46,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645226620] [2024-06-14 15:34:46,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645226620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:34:46,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:34:46,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 15:34:46,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843498720] [2024-06-14 15:34:46,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:34:46,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 15:34:46,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:34:46,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 15:34:46,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-14 15:34:46,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 15:34:46,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:34:46,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:34:46,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 15:34:46,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:34:47,066 INFO L124 PetriNetUnfolderBase]: 214/384 cut-off events. [2024-06-14 15:34:47,067 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2024-06-14 15:34:47,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 384 events. 214/384 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1354 event pairs, 78 based on Foata normal form. 3/387 useless extension candidates. Maximal degree in co-relation 960. Up to 338 conditions per place. [2024-06-14 15:34:47,069 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 37 selfloop transitions, 11 changer transitions 0/50 dead transitions. [2024-06-14 15:34:47,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 50 transitions, 259 flow [2024-06-14 15:34:47,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 15:34:47,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 15:34:47,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2024-06-14 15:34:47,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-14 15:34:47,071 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 78 transitions. [2024-06-14 15:34:47,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 50 transitions, 259 flow [2024-06-14 15:34:47,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 50 transitions, 250 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 15:34:47,073 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 164 flow [2024-06-14 15:34:47,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2024-06-14 15:34:47,074 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-06-14 15:34:47,074 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 164 flow [2024-06-14 15:34:47,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:34:47,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:34:47,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:34:47,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 15:34:47,075 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:34:47,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:34:47,075 INFO L85 PathProgramCache]: Analyzing trace with hash 28448672, now seen corresponding path program 1 times [2024-06-14 15:34:47,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:34:47,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849367056] [2024-06-14 15:34:47,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:34:47,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:34:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:34:49,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:34:49,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:34:49,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849367056] [2024-06-14 15:34:49,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849367056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:34:49,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:34:49,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 15:34:49,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042526241] [2024-06-14 15:34:49,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:34:49,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 15:34:49,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:34:49,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 15:34:49,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-14 15:34:49,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 15:34:49,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:34:49,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:34:49,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 15:34:49,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:34:49,574 INFO L124 PetriNetUnfolderBase]: 224/401 cut-off events. [2024-06-14 15:34:49,574 INFO L125 PetriNetUnfolderBase]: For 487/487 co-relation queries the response was YES. [2024-06-14 15:34:49,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1205 conditions, 401 events. 224/401 cut-off events. For 487/487 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1439 event pairs, 48 based on Foata normal form. 4/405 useless extension candidates. Maximal degree in co-relation 1185. Up to 312 conditions per place. [2024-06-14 15:34:49,577 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 45 selfloop transitions, 19 changer transitions 0/66 dead transitions. [2024-06-14 15:34:49,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 66 transitions, 398 flow [2024-06-14 15:34:49,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 15:34:49,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 15:34:49,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-06-14 15:34:49,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-14 15:34:49,581 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 164 flow. Second operand 6 states and 96 transitions. [2024-06-14 15:34:49,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 66 transitions, 398 flow [2024-06-14 15:34:49,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 66 transitions, 394 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-14 15:34:49,585 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 279 flow [2024-06-14 15:34:49,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=279, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2024-06-14 15:34:49,586 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-14 15:34:49,586 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 279 flow [2024-06-14 15:34:49,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:34:49,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:34:49,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:34:49,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 15:34:49,586 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:34:49,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:34:49,587 INFO L85 PathProgramCache]: Analyzing trace with hash -837623048, now seen corresponding path program 1 times [2024-06-14 15:34:49,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:34:49,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234136854] [2024-06-14 15:34:49,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:34:49,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:34:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:34:52,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:34:52,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:34:52,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234136854] [2024-06-14 15:34:52,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234136854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:34:52,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:34:52,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 15:34:52,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452652230] [2024-06-14 15:34:52,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:34:52,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 15:34:52,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:34:52,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 15:34:52,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-14 15:34:52,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 15:34:52,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 279 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:34:52,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:34:52,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 15:34:52,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:34:52,411 INFO L124 PetriNetUnfolderBase]: 225/404 cut-off events. [2024-06-14 15:34:52,411 INFO L125 PetriNetUnfolderBase]: For 897/897 co-relation queries the response was YES. [2024-06-14 15:34:52,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1465 conditions, 404 events. 225/404 cut-off events. For 897/897 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1451 event pairs, 29 based on Foata normal form. 6/410 useless extension candidates. Maximal degree in co-relation 1440. Up to 319 conditions per place. [2024-06-14 15:34:52,414 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 50 selfloop transitions, 16 changer transitions 0/68 dead transitions. [2024-06-14 15:34:52,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 68 transitions, 476 flow [2024-06-14 15:34:52,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 15:34:52,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 15:34:52,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2024-06-14 15:34:52,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4419642857142857 [2024-06-14 15:34:52,416 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 279 flow. Second operand 7 states and 99 transitions. [2024-06-14 15:34:52,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 68 transitions, 476 flow [2024-06-14 15:34:52,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 68 transitions, 464 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-14 15:34:52,421 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 313 flow [2024-06-14 15:34:52,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=313, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-06-14 15:34:52,424 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-14 15:34:52,425 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 313 flow [2024-06-14 15:34:52,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:34:52,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:34:52,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:34:52,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 15:34:52,433 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:34:52,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:34:52,433 INFO L85 PathProgramCache]: Analyzing trace with hash 352855075, now seen corresponding path program 1 times [2024-06-14 15:34:52,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:34:52,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217052049] [2024-06-14 15:34:52,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:34:52,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:34:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:34:56,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:34:56,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:34:56,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217052049] [2024-06-14 15:34:56,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217052049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:34:56,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:34:56,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 15:34:56,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433583193] [2024-06-14 15:34:56,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:34:56,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 15:34:56,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:34:56,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 15:34:56,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-14 15:34:56,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:34:56,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 313 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:34:56,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:34:56,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:34:56,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:34:56,795 INFO L124 PetriNetUnfolderBase]: 223/401 cut-off events. [2024-06-14 15:34:56,795 INFO L125 PetriNetUnfolderBase]: For 1023/1023 co-relation queries the response was YES. [2024-06-14 15:34:56,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1552 conditions, 401 events. 223/401 cut-off events. For 1023/1023 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1427 event pairs, 57 based on Foata normal form. 1/402 useless extension candidates. Maximal degree in co-relation 1523. Up to 389 conditions per place. [2024-06-14 15:34:56,799 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 45 selfloop transitions, 6 changer transitions 0/53 dead transitions. [2024-06-14 15:34:56,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 427 flow [2024-06-14 15:34:56,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 15:34:56,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 15:34:56,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 56 transitions. [2024-06-14 15:34:56,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-14 15:34:56,801 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 313 flow. Second operand 5 states and 56 transitions. [2024-06-14 15:34:56,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 427 flow [2024-06-14 15:34:56,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 390 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-14 15:34:56,803 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 293 flow [2024-06-14 15:34:56,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=293, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-06-14 15:34:56,804 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2024-06-14 15:34:56,804 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 293 flow [2024-06-14 15:34:56,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:34:56,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:34:56,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:34:56,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 15:34:56,805 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:34:56,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:34:56,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1946796671, now seen corresponding path program 1 times [2024-06-14 15:34:56,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:34:56,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459328816] [2024-06-14 15:34:56,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:34:56,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:34:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:35:01,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:35:01,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:35:01,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459328816] [2024-06-14 15:35:01,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459328816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:35:01,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:35:01,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 15:35:01,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610486428] [2024-06-14 15:35:01,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:35:01,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 15:35:01,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:35:01,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 15:35:01,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 15:35:01,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:35:01,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 293 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:35:01,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:35:01,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:35:01,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:35:01,364 INFO L124 PetriNetUnfolderBase]: 221/398 cut-off events. [2024-06-14 15:35:01,364 INFO L125 PetriNetUnfolderBase]: For 1189/1189 co-relation queries the response was YES. [2024-06-14 15:35:01,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1519 conditions, 398 events. 221/398 cut-off events. For 1189/1189 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1428 event pairs, 56 based on Foata normal form. 1/399 useless extension candidates. Maximal degree in co-relation 1488. Up to 383 conditions per place. [2024-06-14 15:35:01,366 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 44 selfloop transitions, 8 changer transitions 0/54 dead transitions. [2024-06-14 15:35:01,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 54 transitions, 411 flow [2024-06-14 15:35:01,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 15:35:01,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 15:35:01,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-06-14 15:35:01,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 15:35:01,368 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 293 flow. Second operand 6 states and 64 transitions. [2024-06-14 15:35:01,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 54 transitions, 411 flow [2024-06-14 15:35:01,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 396 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-14 15:35:01,371 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 299 flow [2024-06-14 15:35:01,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=299, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2024-06-14 15:35:01,372 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2024-06-14 15:35:01,372 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 299 flow [2024-06-14 15:35:01,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:35:01,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:35:01,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:35:01,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 15:35:01,374 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:35:01,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:35:01,374 INFO L85 PathProgramCache]: Analyzing trace with hash -587048160, now seen corresponding path program 1 times [2024-06-14 15:35:01,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:35:01,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801441567] [2024-06-14 15:35:01,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:35:01,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:35:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:35:05,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:35:05,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:35:05,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801441567] [2024-06-14 15:35:05,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801441567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:35:05,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:35:05,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 15:35:05,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247045349] [2024-06-14 15:35:05,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:35:05,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 15:35:05,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:35:05,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 15:35:05,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-14 15:35:05,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:35:05,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 299 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:35:05,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:35:05,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:35:05,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:35:05,299 INFO L124 PetriNetUnfolderBase]: 222/400 cut-off events. [2024-06-14 15:35:05,299 INFO L125 PetriNetUnfolderBase]: For 1433/1433 co-relation queries the response was YES. [2024-06-14 15:35:05,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1573 conditions, 400 events. 222/400 cut-off events. For 1433/1433 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1432 event pairs, 54 based on Foata normal form. 2/402 useless extension candidates. Maximal degree in co-relation 1542. Up to 354 conditions per place. [2024-06-14 15:35:05,302 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 45 selfloop transitions, 13 changer transitions 0/60 dead transitions. [2024-06-14 15:35:05,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 60 transitions, 469 flow [2024-06-14 15:35:05,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 15:35:05,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 15:35:05,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2024-06-14 15:35:05,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 15:35:05,303 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 299 flow. Second operand 6 states and 72 transitions. [2024-06-14 15:35:05,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 60 transitions, 469 flow [2024-06-14 15:35:05,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 60 transitions, 443 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-14 15:35:05,306 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 324 flow [2024-06-14 15:35:05,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=324, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-06-14 15:35:05,306 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2024-06-14 15:35:05,306 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 324 flow [2024-06-14 15:35:05,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:35:05,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:35:05,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:35:05,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 15:35:05,307 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:35:05,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:35:05,308 INFO L85 PathProgramCache]: Analyzing trace with hash -208648830, now seen corresponding path program 2 times [2024-06-14 15:35:05,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:35:05,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273438347] [2024-06-14 15:35:05,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:35:05,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:35:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:35:08,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:35:08,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:35:08,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273438347] [2024-06-14 15:35:08,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273438347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:35:08,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:35:08,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 15:35:08,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235128706] [2024-06-14 15:35:08,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:35:08,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 15:35:08,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:35:08,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 15:35:08,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-14 15:35:08,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:35:08,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 324 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:35:08,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:35:08,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:35:08,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:35:08,965 INFO L124 PetriNetUnfolderBase]: 217/390 cut-off events. [2024-06-14 15:35:08,965 INFO L125 PetriNetUnfolderBase]: For 1640/1640 co-relation queries the response was YES. [2024-06-14 15:35:08,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1578 conditions, 390 events. 217/390 cut-off events. For 1640/1640 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1365 event pairs, 53 based on Foata normal form. 1/391 useless extension candidates. Maximal degree in co-relation 1548. Up to 375 conditions per place. [2024-06-14 15:35:08,967 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 46 selfloop transitions, 8 changer transitions 0/56 dead transitions. [2024-06-14 15:35:08,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 56 transitions, 446 flow [2024-06-14 15:35:08,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 15:35:08,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 15:35:08,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-06-14 15:35:08,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 15:35:08,968 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 324 flow. Second operand 6 states and 64 transitions. [2024-06-14 15:35:08,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 56 transitions, 446 flow [2024-06-14 15:35:08,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 431 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 15:35:08,971 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 330 flow [2024-06-14 15:35:08,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=330, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2024-06-14 15:35:08,972 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2024-06-14 15:35:08,972 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 330 flow [2024-06-14 15:35:08,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:35:08,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:35:08,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:35:08,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 15:35:08,973 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:35:08,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:35:08,973 INFO L85 PathProgramCache]: Analyzing trace with hash -221153114, now seen corresponding path program 1 times [2024-06-14 15:35:08,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:35:08,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890360776] [2024-06-14 15:35:08,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:35:08,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:35:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:35:12,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:35:12,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:35:12,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890360776] [2024-06-14 15:35:12,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890360776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:35:12,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:35:12,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 15:35:12,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381957720] [2024-06-14 15:35:12,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:35:12,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 15:35:12,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:35:12,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 15:35:12,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-14 15:35:12,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:35:12,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 330 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:35:12,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:35:12,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:35:12,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:35:12,863 INFO L124 PetriNetUnfolderBase]: 215/387 cut-off events. [2024-06-14 15:35:12,864 INFO L125 PetriNetUnfolderBase]: For 1956/1956 co-relation queries the response was YES. [2024-06-14 15:35:12,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1599 conditions, 387 events. 215/387 cut-off events. For 1956/1956 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1357 event pairs, 52 based on Foata normal form. 1/388 useless extension candidates. Maximal degree in co-relation 1568. Up to 369 conditions per place. [2024-06-14 15:35:12,867 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 47 selfloop transitions, 10 changer transitions 0/59 dead transitions. [2024-06-14 15:35:12,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 59 transitions, 468 flow [2024-06-14 15:35:12,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 15:35:12,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 15:35:12,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-14 15:35:12,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2024-06-14 15:35:12,869 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 330 flow. Second operand 7 states and 72 transitions. [2024-06-14 15:35:12,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 59 transitions, 468 flow [2024-06-14 15:35:12,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 59 transitions, 434 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-14 15:35:12,871 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 333 flow [2024-06-14 15:35:12,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=333, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-06-14 15:35:12,873 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 31 predicate places. [2024-06-14 15:35:12,875 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 333 flow [2024-06-14 15:35:12,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:35:12,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:35:12,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:35:12,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 15:35:12,876 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:35:12,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:35:12,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1018622264, now seen corresponding path program 1 times [2024-06-14 15:35:12,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:35:12,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081120677] [2024-06-14 15:35:12,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:35:12,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:35:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:35:16,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:35:16,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:35:16,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081120677] [2024-06-14 15:35:16,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081120677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:35:16,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:35:16,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 15:35:16,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552426093] [2024-06-14 15:35:16,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:35:16,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 15:35:16,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:35:16,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 15:35:16,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 15:35:16,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:35:16,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 333 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:35:16,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:35:16,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:35:16,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:35:16,968 INFO L124 PetriNetUnfolderBase]: 225/404 cut-off events. [2024-06-14 15:35:16,968 INFO L125 PetriNetUnfolderBase]: For 2376/2376 co-relation queries the response was YES. [2024-06-14 15:35:16,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1706 conditions, 404 events. 225/404 cut-off events. For 2376/2376 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1440 event pairs, 50 based on Foata normal form. 3/407 useless extension candidates. Maximal degree in co-relation 1674. Up to 302 conditions per place. [2024-06-14 15:35:16,972 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 45 selfloop transitions, 26 changer transitions 0/73 dead transitions. [2024-06-14 15:35:16,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 73 transitions, 589 flow [2024-06-14 15:35:16,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 15:35:16,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 15:35:16,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-14 15:35:16,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-14 15:35:16,974 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 333 flow. Second operand 7 states and 88 transitions. [2024-06-14 15:35:16,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 73 transitions, 589 flow [2024-06-14 15:35:16,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 73 transitions, 568 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-14 15:35:16,979 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 436 flow [2024-06-14 15:35:16,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=436, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2024-06-14 15:35:16,980 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 34 predicate places. [2024-06-14 15:35:16,980 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 436 flow [2024-06-14 15:35:16,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:35:16,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:35:16,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:35:16,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 15:35:16,981 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:35:16,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:35:16,981 INFO L85 PathProgramCache]: Analyzing trace with hash 152396018, now seen corresponding path program 2 times [2024-06-14 15:35:16,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:35:16,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076369811] [2024-06-14 15:35:16,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:35:16,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:35:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:35:20,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:35:20,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:35:20,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076369811] [2024-06-14 15:35:20,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076369811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:35:20,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:35:20,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 15:35:20,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177688791] [2024-06-14 15:35:20,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:35:20,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 15:35:20,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:35:20,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 15:35:20,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 15:35:20,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:35:20,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 436 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:35:20,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:35:20,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:35:20,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:35:20,816 INFO L124 PetriNetUnfolderBase]: 228/409 cut-off events. [2024-06-14 15:35:20,816 INFO L125 PetriNetUnfolderBase]: For 2751/2751 co-relation queries the response was YES. [2024-06-14 15:35:20,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1887 conditions, 409 events. 228/409 cut-off events. For 2751/2751 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1467 event pairs, 49 based on Foata normal form. 1/410 useless extension candidates. Maximal degree in co-relation 1853. Up to 391 conditions per place. [2024-06-14 15:35:20,819 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 58 selfloop transitions, 10 changer transitions 0/70 dead transitions. [2024-06-14 15:35:20,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 606 flow [2024-06-14 15:35:20,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 15:35:20,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 15:35:20,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-14 15:35:20,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2024-06-14 15:35:20,820 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 436 flow. Second operand 7 states and 72 transitions. [2024-06-14 15:35:20,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 606 flow [2024-06-14 15:35:20,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 70 transitions, 591 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-14 15:35:20,824 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 468 flow [2024-06-14 15:35:20,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=468, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2024-06-14 15:35:20,825 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 39 predicate places. [2024-06-14 15:35:20,825 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 468 flow [2024-06-14 15:35:20,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:35:20,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:35:20,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:35:20,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 15:35:20,826 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:35:20,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:35:20,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1733943554, now seen corresponding path program 3 times [2024-06-14 15:35:20,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:35:20,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528885681] [2024-06-14 15:35:20,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:35:20,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:35:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:35:24,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:35:24,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:35:24,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528885681] [2024-06-14 15:35:24,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528885681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:35:24,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:35:24,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 15:35:24,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036398498] [2024-06-14 15:35:24,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:35:24,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 15:35:24,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:35:24,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 15:35:24,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 15:35:24,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:35:24,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 468 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:35:24,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:35:24,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:35:24,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:35:24,769 INFO L124 PetriNetUnfolderBase]: 226/406 cut-off events. [2024-06-14 15:35:24,770 INFO L125 PetriNetUnfolderBase]: For 3140/3140 co-relation queries the response was YES. [2024-06-14 15:35:24,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1919 conditions, 406 events. 226/406 cut-off events. For 3140/3140 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1460 event pairs, 49 based on Foata normal form. 1/407 useless extension candidates. Maximal degree in co-relation 1883. Up to 382 conditions per place. [2024-06-14 15:35:24,772 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 55 selfloop transitions, 13 changer transitions 0/70 dead transitions. [2024-06-14 15:35:24,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 70 transitions, 620 flow [2024-06-14 15:35:24,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 15:35:24,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 15:35:24,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-14 15:35:24,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33035714285714285 [2024-06-14 15:35:24,774 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 468 flow. Second operand 7 states and 74 transitions. [2024-06-14 15:35:24,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 70 transitions, 620 flow [2024-06-14 15:35:24,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 70 transitions, 597 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 15:35:24,778 INFO L231 Difference]: Finished difference. Result has 72 places, 63 transitions, 476 flow [2024-06-14 15:35:24,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=476, PETRI_PLACES=72, PETRI_TRANSITIONS=63} [2024-06-14 15:35:24,778 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-06-14 15:35:24,778 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 63 transitions, 476 flow [2024-06-14 15:35:24,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:35:24,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:35:24,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:35:24,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 15:35:24,779 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:35:24,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:35:24,779 INFO L85 PathProgramCache]: Analyzing trace with hash -841244666, now seen corresponding path program 1 times [2024-06-14 15:35:24,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:35:24,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057527575] [2024-06-14 15:35:24,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:35:24,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:35:24,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:35:28,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:35:28,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:35:28,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057527575] [2024-06-14 15:35:28,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057527575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:35:28,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:35:28,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 15:35:28,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224403229] [2024-06-14 15:35:28,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:35:28,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 15:35:28,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:35:28,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 15:35:28,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-14 15:35:28,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:35:28,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 63 transitions, 476 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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) [2024-06-14 15:35:28,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:35:28,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:35:28,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:35:29,340 INFO L124 PetriNetUnfolderBase]: 222/400 cut-off events. [2024-06-14 15:35:29,341 INFO L125 PetriNetUnfolderBase]: For 3537/3537 co-relation queries the response was YES. [2024-06-14 15:35:29,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1919 conditions, 400 events. 222/400 cut-off events. For 3537/3537 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1422 event pairs, 47 based on Foata normal form. 2/402 useless extension candidates. Maximal degree in co-relation 1882. Up to 376 conditions per place. [2024-06-14 15:35:29,344 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 60 selfloop transitions, 12 changer transitions 0/74 dead transitions. [2024-06-14 15:35:29,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 74 transitions, 650 flow [2024-06-14 15:35:29,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 15:35:29,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 15:35:29,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-14 15:35:29,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31640625 [2024-06-14 15:35:29,345 INFO L175 Difference]: Start difference. First operand has 72 places, 63 transitions, 476 flow. Second operand 8 states and 81 transitions. [2024-06-14 15:35:29,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 74 transitions, 650 flow [2024-06-14 15:35:29,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 74 transitions, 608 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 15:35:29,350 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 477 flow [2024-06-14 15:35:29,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=477, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2024-06-14 15:35:29,351 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 43 predicate places. [2024-06-14 15:35:29,351 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 477 flow [2024-06-14 15:35:29,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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) [2024-06-14 15:35:29,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:35:29,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:35:29,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 15:35:29,352 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:35:29,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:35:29,352 INFO L85 PathProgramCache]: Analyzing trace with hash 2013188553, now seen corresponding path program 1 times [2024-06-14 15:35:29,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:35:29,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573858697] [2024-06-14 15:35:29,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:35:29,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:35:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:35:33,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:35:33,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:35:33,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573858697] [2024-06-14 15:35:33,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573858697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:35:33,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:35:33,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 15:35:33,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972089802] [2024-06-14 15:35:33,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:35:33,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 15:35:33,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:35:33,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 15:35:33,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-14 15:35:33,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:35:33,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 477 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:35:33,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:35:33,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:35:33,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:35:33,911 INFO L124 PetriNetUnfolderBase]: 225/405 cut-off events. [2024-06-14 15:35:33,911 INFO L125 PetriNetUnfolderBase]: For 3841/3841 co-relation queries the response was YES. [2024-06-14 15:35:33,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1982 conditions, 405 events. 225/405 cut-off events. For 3841/3841 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1441 event pairs, 47 based on Foata normal form. 1/406 useless extension candidates. Maximal degree in co-relation 1945. Up to 342 conditions per place. [2024-06-14 15:35:33,914 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 63 selfloop transitions, 17 changer transitions 0/82 dead transitions. [2024-06-14 15:35:33,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 82 transitions, 725 flow [2024-06-14 15:35:33,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 15:35:33,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 15:35:33,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-14 15:35:33,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705357142857143 [2024-06-14 15:35:33,916 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 477 flow. Second operand 7 states and 83 transitions. [2024-06-14 15:35:33,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 82 transitions, 725 flow [2024-06-14 15:35:33,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 82 transitions, 698 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 15:35:33,920 INFO L231 Difference]: Finished difference. Result has 75 places, 68 transitions, 517 flow [2024-06-14 15:35:33,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=517, PETRI_PLACES=75, PETRI_TRANSITIONS=68} [2024-06-14 15:35:33,921 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-14 15:35:33,921 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 68 transitions, 517 flow [2024-06-14 15:35:33,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:35:33,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:35:33,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:35:33,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 15:35:33,922 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:35:33,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:35:33,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1613147621, now seen corresponding path program 2 times [2024-06-14 15:35:33,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:35:33,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232343625] [2024-06-14 15:35:33,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:35:33,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:35:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:35:38,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:35:38,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:35:38,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232343625] [2024-06-14 15:35:38,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232343625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:35:38,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:35:38,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 15:35:38,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796934450] [2024-06-14 15:35:38,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:35:38,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 15:35:38,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:35:38,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 15:35:38,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 15:35:38,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:35:38,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 68 transitions, 517 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:35:38,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:35:38,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:35:38,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:35:38,357 INFO L124 PetriNetUnfolderBase]: 222/400 cut-off events. [2024-06-14 15:35:38,358 INFO L125 PetriNetUnfolderBase]: For 4253/4253 co-relation queries the response was YES. [2024-06-14 15:35:38,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1997 conditions, 400 events. 222/400 cut-off events. For 4253/4253 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1414 event pairs, 47 based on Foata normal form. 1/401 useless extension candidates. Maximal degree in co-relation 1959. Up to 353 conditions per place. [2024-06-14 15:35:38,360 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 61 selfloop transitions, 15 changer transitions 0/78 dead transitions. [2024-06-14 15:35:38,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 78 transitions, 693 flow [2024-06-14 15:35:38,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 15:35:38,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 15:35:38,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-14 15:35:38,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-14 15:35:38,362 INFO L175 Difference]: Start difference. First operand has 75 places, 68 transitions, 517 flow. Second operand 7 states and 79 transitions. [2024-06-14 15:35:38,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 78 transitions, 693 flow [2024-06-14 15:35:38,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 78 transitions, 668 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-14 15:35:38,367 INFO L231 Difference]: Finished difference. Result has 79 places, 68 transitions, 527 flow [2024-06-14 15:35:38,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=527, PETRI_PLACES=79, PETRI_TRANSITIONS=68} [2024-06-14 15:35:38,368 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 48 predicate places. [2024-06-14 15:35:38,368 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 68 transitions, 527 flow [2024-06-14 15:35:38,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:35:38,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:35:38,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:35:38,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 15:35:38,369 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:35:38,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:35:38,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1512517786, now seen corresponding path program 1 times [2024-06-14 15:35:38,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:35:38,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414935560] [2024-06-14 15:35:38,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:35:38,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:35:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:35:41,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:35:41,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:35:41,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414935560] [2024-06-14 15:35:41,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414935560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:35:41,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:35:41,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 15:35:41,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552963369] [2024-06-14 15:35:41,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:35:41,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 15:35:41,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:35:41,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 15:35:41,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 15:35:41,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:35:41,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 68 transitions, 527 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:35:41,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:35:41,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:35:41,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:35:42,226 INFO L124 PetriNetUnfolderBase]: 230/413 cut-off events. [2024-06-14 15:35:42,227 INFO L125 PetriNetUnfolderBase]: For 4911/4911 co-relation queries the response was YES. [2024-06-14 15:35:42,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2116 conditions, 413 events. 230/413 cut-off events. For 4911/4911 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1475 event pairs, 48 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 2076. Up to 301 conditions per place. [2024-06-14 15:35:42,229 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 48 selfloop transitions, 34 changer transitions 0/84 dead transitions. [2024-06-14 15:35:42,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 84 transitions, 809 flow [2024-06-14 15:35:42,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 15:35:42,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 15:35:42,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-14 15:35:42,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3794642857142857 [2024-06-14 15:35:42,230 INFO L175 Difference]: Start difference. First operand has 79 places, 68 transitions, 527 flow. Second operand 7 states and 85 transitions. [2024-06-14 15:35:42,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 84 transitions, 809 flow [2024-06-14 15:35:42,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 84 transitions, 771 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-14 15:35:42,236 INFO L231 Difference]: Finished difference. Result has 80 places, 72 transitions, 591 flow [2024-06-14 15:35:42,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=591, PETRI_PLACES=80, PETRI_TRANSITIONS=72} [2024-06-14 15:35:42,237 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 49 predicate places. [2024-06-14 15:35:42,237 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 72 transitions, 591 flow [2024-06-14 15:35:42,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:35:42,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:35:42,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:35:42,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 15:35:42,237 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:35:42,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:35:42,238 INFO L85 PathProgramCache]: Analyzing trace with hash -515709535, now seen corresponding path program 1 times [2024-06-14 15:35:42,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:35:42,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773041966] [2024-06-14 15:35:42,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:35:42,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:35:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:35:46,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:35:46,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:35:46,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773041966] [2024-06-14 15:35:46,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773041966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:35:46,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:35:46,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 15:35:46,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772966695] [2024-06-14 15:35:46,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:35:46,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 15:35:46,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:35:46,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 15:35:46,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 15:35:46,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:35:46,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 72 transitions, 591 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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) [2024-06-14 15:35:46,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:35:46,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:35:46,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:35:46,322 INFO L124 PetriNetUnfolderBase]: 244/436 cut-off events. [2024-06-14 15:35:46,322 INFO L125 PetriNetUnfolderBase]: For 5995/5995 co-relation queries the response was YES. [2024-06-14 15:35:46,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2287 conditions, 436 events. 244/436 cut-off events. For 5995/5995 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1587 event pairs, 47 based on Foata normal form. 3/439 useless extension candidates. Maximal degree in co-relation 2246. Up to 271 conditions per place. [2024-06-14 15:35:46,325 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 60 selfloop transitions, 33 changer transitions 0/95 dead transitions. [2024-06-14 15:35:46,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 95 transitions, 929 flow [2024-06-14 15:35:46,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 15:35:46,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 15:35:46,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-14 15:35:46,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39453125 [2024-06-14 15:35:46,327 INFO L175 Difference]: Start difference. First operand has 80 places, 72 transitions, 591 flow. Second operand 8 states and 101 transitions. [2024-06-14 15:35:46,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 95 transitions, 929 flow [2024-06-14 15:35:46,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 95 transitions, 899 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-14 15:35:46,334 INFO L231 Difference]: Finished difference. Result has 85 places, 80 transitions, 685 flow [2024-06-14 15:35:46,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=685, PETRI_PLACES=85, PETRI_TRANSITIONS=80} [2024-06-14 15:35:46,335 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 54 predicate places. [2024-06-14 15:35:46,335 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 80 transitions, 685 flow [2024-06-14 15:35:46,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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) [2024-06-14 15:35:46,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:35:46,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:35:46,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 15:35:46,335 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:35:46,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:35:46,336 INFO L85 PathProgramCache]: Analyzing trace with hash 2013336578, now seen corresponding path program 2 times [2024-06-14 15:35:46,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:35:46,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090429759] [2024-06-14 15:35:46,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:35:46,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:35:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:35:49,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:35:49,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:35:49,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090429759] [2024-06-14 15:35:49,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090429759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:35:49,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:35:49,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 15:35:49,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189421547] [2024-06-14 15:35:49,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:35:49,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 15:35:49,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:35:49,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 15:35:49,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 15:35:50,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:35:50,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 685 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:35:50,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:35:50,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:35:50,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:35:50,285 INFO L124 PetriNetUnfolderBase]: 240/430 cut-off events. [2024-06-14 15:35:50,285 INFO L125 PetriNetUnfolderBase]: For 6306/6306 co-relation queries the response was YES. [2024-06-14 15:35:50,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2362 conditions, 430 events. 240/430 cut-off events. For 6306/6306 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1568 event pairs, 45 based on Foata normal form. 2/432 useless extension candidates. Maximal degree in co-relation 2320. Up to 321 conditions per place. [2024-06-14 15:35:50,288 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 59 selfloop transitions, 34 changer transitions 0/95 dead transitions. [2024-06-14 15:35:50,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 95 transitions, 979 flow [2024-06-14 15:35:50,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 15:35:50,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 15:35:50,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-14 15:35:50,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2024-06-14 15:35:50,291 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 685 flow. Second operand 7 states and 90 transitions. [2024-06-14 15:35:50,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 95 transitions, 979 flow [2024-06-14 15:35:50,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 95 transitions, 947 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-14 15:35:50,298 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 729 flow [2024-06-14 15:35:50,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=729, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2024-06-14 15:35:50,299 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-06-14 15:35:50,299 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 729 flow [2024-06-14 15:35:50,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:35:50,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:35:50,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:35:50,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 15:35:50,299 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:35:50,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:35:50,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1359337130, now seen corresponding path program 3 times [2024-06-14 15:35:50,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:35:50,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719868216] [2024-06-14 15:35:50,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:35:50,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:35:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:35:53,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:35:53,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:35:53,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719868216] [2024-06-14 15:35:53,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719868216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:35:53,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:35:53,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 15:35:53,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637490059] [2024-06-14 15:35:53,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:35:53,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 15:35:53,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:35:53,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 15:35:53,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 15:35:53,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:35:53,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 729 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:35:53,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:35:53,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:35:53,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:35:54,131 INFO L124 PetriNetUnfolderBase]: 237/425 cut-off events. [2024-06-14 15:35:54,132 INFO L125 PetriNetUnfolderBase]: For 6747/6747 co-relation queries the response was YES. [2024-06-14 15:35:54,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2415 conditions, 425 events. 237/425 cut-off events. For 6747/6747 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1537 event pairs, 44 based on Foata normal form. 1/426 useless extension candidates. Maximal degree in co-relation 2371. Up to 404 conditions per place. [2024-06-14 15:35:54,135 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 74 selfloop transitions, 11 changer transitions 0/87 dead transitions. [2024-06-14 15:35:54,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 87 transitions, 915 flow [2024-06-14 15:35:54,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 15:35:54,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 15:35:54,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-14 15:35:54,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32589285714285715 [2024-06-14 15:35:54,136 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 729 flow. Second operand 7 states and 73 transitions. [2024-06-14 15:35:54,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 87 transitions, 915 flow [2024-06-14 15:35:54,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 87 transitions, 834 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-14 15:35:54,144 INFO L231 Difference]: Finished difference. Result has 90 places, 80 transitions, 675 flow [2024-06-14 15:35:54,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=675, PETRI_PLACES=90, PETRI_TRANSITIONS=80} [2024-06-14 15:35:54,145 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 59 predicate places. [2024-06-14 15:35:54,145 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 80 transitions, 675 flow [2024-06-14 15:35:54,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:35:54,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:35:54,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:35:54,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 15:35:54,146 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:35:54,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:35:54,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1359337347, now seen corresponding path program 2 times [2024-06-14 15:35:54,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:35:54,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883805520] [2024-06-14 15:35:54,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:35:54,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:35:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:35:57,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:35:57,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:35:57,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883805520] [2024-06-14 15:35:57,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883805520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:35:57,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:35:57,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 15:35:57,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513115983] [2024-06-14 15:35:57,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:35:57,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 15:35:57,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:35:57,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 15:35:57,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 15:35:57,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:35:57,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 80 transitions, 675 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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) [2024-06-14 15:35:57,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:35:57,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:35:57,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:35:58,270 INFO L124 PetriNetUnfolderBase]: 240/430 cut-off events. [2024-06-14 15:35:58,270 INFO L125 PetriNetUnfolderBase]: For 7272/7272 co-relation queries the response was YES. [2024-06-14 15:35:58,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2409 conditions, 430 events. 240/430 cut-off events. For 7272/7272 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1559 event pairs, 43 based on Foata normal form. 1/431 useless extension candidates. Maximal degree in co-relation 2364. Up to 406 conditions per place. [2024-06-14 15:35:58,274 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 74 selfloop transitions, 14 changer transitions 0/90 dead transitions. [2024-06-14 15:35:58,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 90 transitions, 883 flow [2024-06-14 15:35:58,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 15:35:58,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 15:35:58,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-14 15:35:58,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31640625 [2024-06-14 15:35:58,275 INFO L175 Difference]: Start difference. First operand has 90 places, 80 transitions, 675 flow. Second operand 8 states and 81 transitions. [2024-06-14 15:35:58,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 90 transitions, 883 flow [2024-06-14 15:35:58,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 90 transitions, 823 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-14 15:35:58,284 INFO L231 Difference]: Finished difference. Result has 91 places, 82 transitions, 666 flow [2024-06-14 15:35:58,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=666, PETRI_PLACES=91, PETRI_TRANSITIONS=82} [2024-06-14 15:35:58,284 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-14 15:35:58,285 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 82 transitions, 666 flow [2024-06-14 15:35:58,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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) [2024-06-14 15:35:58,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:35:58,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:35:58,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 15:35:58,285 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:35:58,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:35:58,285 INFO L85 PathProgramCache]: Analyzing trace with hash -2074704571, now seen corresponding path program 3 times [2024-06-14 15:35:58,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:35:58,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934361906] [2024-06-14 15:35:58,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:35:58,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:35:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:36:01,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:36:01,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:36:01,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934361906] [2024-06-14 15:36:01,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934361906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:36:01,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:36:01,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 15:36:01,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317561283] [2024-06-14 15:36:01,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:36:01,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 15:36:01,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:36:01,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 15:36:01,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 15:36:01,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:36:01,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 82 transitions, 666 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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) [2024-06-14 15:36:01,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:36:01,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:36:01,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:36:02,119 INFO L124 PetriNetUnfolderBase]: 243/435 cut-off events. [2024-06-14 15:36:02,120 INFO L125 PetriNetUnfolderBase]: For 7941/7941 co-relation queries the response was YES. [2024-06-14 15:36:02,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2467 conditions, 435 events. 243/435 cut-off events. For 7941/7941 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1583 event pairs, 43 based on Foata normal form. 1/436 useless extension candidates. Maximal degree in co-relation 2421. Up to 414 conditions per place. [2024-06-14 15:36:02,123 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 78 selfloop transitions, 12 changer transitions 0/92 dead transitions. [2024-06-14 15:36:02,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 92 transitions, 882 flow [2024-06-14 15:36:02,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 15:36:02,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 15:36:02,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-14 15:36:02,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-14 15:36:02,124 INFO L175 Difference]: Start difference. First operand has 91 places, 82 transitions, 666 flow. Second operand 8 states and 80 transitions. [2024-06-14 15:36:02,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 92 transitions, 882 flow [2024-06-14 15:36:02,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 92 transitions, 849 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 15:36:02,133 INFO L231 Difference]: Finished difference. Result has 93 places, 84 transitions, 684 flow [2024-06-14 15:36:02,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=684, PETRI_PLACES=93, PETRI_TRANSITIONS=84} [2024-06-14 15:36:02,134 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-14 15:36:02,134 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 84 transitions, 684 flow [2024-06-14 15:36:02,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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) [2024-06-14 15:36:02,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:36:02,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:36:02,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 15:36:02,135 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:36:02,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:36:02,135 INFO L85 PathProgramCache]: Analyzing trace with hash -316407745, now seen corresponding path program 4 times [2024-06-14 15:36:02,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:36:02,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512146916] [2024-06-14 15:36:02,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:36:02,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:36:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:36:05,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:36:05,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:36:05,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512146916] [2024-06-14 15:36:05,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512146916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:36:05,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:36:05,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 15:36:05,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27571865] [2024-06-14 15:36:05,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:36:05,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 15:36:05,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:36:05,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 15:36:05,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 15:36:05,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:36:05,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 84 transitions, 684 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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) [2024-06-14 15:36:05,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:36:05,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:36:05,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:36:06,014 INFO L124 PetriNetUnfolderBase]: 241/432 cut-off events. [2024-06-14 15:36:06,014 INFO L125 PetriNetUnfolderBase]: For 8492/8492 co-relation queries the response was YES. [2024-06-14 15:36:06,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2482 conditions, 432 events. 241/432 cut-off events. For 8492/8492 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1577 event pairs, 43 based on Foata normal form. 1/433 useless extension candidates. Maximal degree in co-relation 2435. Up to 396 conditions per place. [2024-06-14 15:36:06,018 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 73 selfloop transitions, 19 changer transitions 0/94 dead transitions. [2024-06-14 15:36:06,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 94 transitions, 908 flow [2024-06-14 15:36:06,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 15:36:06,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 15:36:06,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-14 15:36:06,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-14 15:36:06,020 INFO L175 Difference]: Start difference. First operand has 93 places, 84 transitions, 684 flow. Second operand 8 states and 84 transitions. [2024-06-14 15:36:06,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 94 transitions, 908 flow [2024-06-14 15:36:06,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 875 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-14 15:36:06,029 INFO L231 Difference]: Finished difference. Result has 95 places, 86 transitions, 720 flow [2024-06-14 15:36:06,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=720, PETRI_PLACES=95, PETRI_TRANSITIONS=86} [2024-06-14 15:36:06,030 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 64 predicate places. [2024-06-14 15:36:06,030 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 86 transitions, 720 flow [2024-06-14 15:36:06,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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) [2024-06-14 15:36:06,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:36:06,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:36:06,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 15:36:06,031 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:36:06,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:36:06,031 INFO L85 PathProgramCache]: Analyzing trace with hash 238264363, now seen corresponding path program 1 times [2024-06-14 15:36:06,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:36:06,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294702545] [2024-06-14 15:36:06,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:36:06,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:36:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:36:10,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:36:10,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:36:10,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294702545] [2024-06-14 15:36:10,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294702545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:36:10,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:36:10,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 15:36:10,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318837340] [2024-06-14 15:36:10,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:36:10,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 15:36:10,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:36:10,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 15:36:10,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-14 15:36:10,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:36:10,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 86 transitions, 720 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:36:10,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:36:10,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:36:10,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:36:10,545 INFO L124 PetriNetUnfolderBase]: 252/453 cut-off events. [2024-06-14 15:36:10,545 INFO L125 PetriNetUnfolderBase]: For 10168/10168 co-relation queries the response was YES. [2024-06-14 15:36:10,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2657 conditions, 453 events. 252/453 cut-off events. For 10168/10168 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1700 event pairs, 24 based on Foata normal form. 2/455 useless extension candidates. Maximal degree in co-relation 2609. Up to 299 conditions per place. [2024-06-14 15:36:10,548 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 71 selfloop transitions, 33 changer transitions 0/106 dead transitions. [2024-06-14 15:36:10,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 106 transitions, 1078 flow [2024-06-14 15:36:10,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 15:36:10,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 15:36:10,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-14 15:36:10,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37109375 [2024-06-14 15:36:10,550 INFO L175 Difference]: Start difference. First operand has 95 places, 86 transitions, 720 flow. Second operand 8 states and 95 transitions. [2024-06-14 15:36:10,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 106 transitions, 1078 flow [2024-06-14 15:36:10,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 106 transitions, 1027 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 15:36:10,562 INFO L231 Difference]: Finished difference. Result has 98 places, 88 transitions, 766 flow [2024-06-14 15:36:10,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=766, PETRI_PLACES=98, PETRI_TRANSITIONS=88} [2024-06-14 15:36:10,563 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-06-14 15:36:10,563 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 88 transitions, 766 flow [2024-06-14 15:36:10,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:36:10,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:36:10,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:36:10,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 15:36:10,564 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:36:10,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:36:10,565 INFO L85 PathProgramCache]: Analyzing trace with hash -323483627, now seen corresponding path program 2 times [2024-06-14 15:36:10,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:36:10,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331530527] [2024-06-14 15:36:10,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:36:10,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:36:10,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:36:14,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:36:14,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:36:14,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331530527] [2024-06-14 15:36:14,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331530527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:36:14,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:36:14,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 15:36:14,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687250960] [2024-06-14 15:36:14,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:36:14,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 15:36:14,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:36:14,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 15:36:14,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-14 15:36:14,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:36:14,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 88 transitions, 766 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:36:14,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:36:14,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:36:14,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:36:14,951 INFO L124 PetriNetUnfolderBase]: 256/461 cut-off events. [2024-06-14 15:36:14,951 INFO L125 PetriNetUnfolderBase]: For 11137/11137 co-relation queries the response was YES. [2024-06-14 15:36:14,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2805 conditions, 461 events. 256/461 cut-off events. For 11137/11137 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1755 event pairs, 43 based on Foata normal form. 2/463 useless extension candidates. Maximal degree in co-relation 2755. Up to 356 conditions per place. [2024-06-14 15:36:14,955 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 73 selfloop transitions, 30 changer transitions 0/105 dead transitions. [2024-06-14 15:36:14,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 105 transitions, 1071 flow [2024-06-14 15:36:14,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 15:36:14,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 15:36:14,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-14 15:36:14,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-14 15:36:14,957 INFO L175 Difference]: Start difference. First operand has 98 places, 88 transitions, 766 flow. Second operand 8 states and 94 transitions. [2024-06-14 15:36:14,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 105 transitions, 1071 flow [2024-06-14 15:36:14,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 105 transitions, 999 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-14 15:36:14,968 INFO L231 Difference]: Finished difference. Result has 101 places, 89 transitions, 773 flow [2024-06-14 15:36:14,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=773, PETRI_PLACES=101, PETRI_TRANSITIONS=89} [2024-06-14 15:36:14,969 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-14 15:36:14,969 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 89 transitions, 773 flow [2024-06-14 15:36:14,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:36:14,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:36:14,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:36:14,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 15:36:14,969 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:36:14,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:36:14,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1532025139, now seen corresponding path program 1 times [2024-06-14 15:36:14,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:36:14,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832982821] [2024-06-14 15:36:14,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:36:14,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:36:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:36:19,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:36:19,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:36:19,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832982821] [2024-06-14 15:36:19,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832982821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:36:19,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:36:19,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 15:36:19,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581940283] [2024-06-14 15:36:19,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:36:19,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 15:36:19,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:36:19,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 15:36:19,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 15:36:19,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:36:19,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 89 transitions, 773 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:36:19,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:36:19,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:36:19,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:36:19,647 INFO L124 PetriNetUnfolderBase]: 254/458 cut-off events. [2024-06-14 15:36:19,647 INFO L125 PetriNetUnfolderBase]: For 11386/11386 co-relation queries the response was YES. [2024-06-14 15:36:19,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2756 conditions, 458 events. 254/458 cut-off events. For 11386/11386 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1734 event pairs, 44 based on Foata normal form. 1/459 useless extension candidates. Maximal degree in co-relation 2706. Up to 352 conditions per place. [2024-06-14 15:36:19,656 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 66 selfloop transitions, 32 changer transitions 0/100 dead transitions. [2024-06-14 15:36:19,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 100 transitions, 995 flow [2024-06-14 15:36:19,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 15:36:19,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 15:36:19,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-14 15:36:19,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-14 15:36:19,658 INFO L175 Difference]: Start difference. First operand has 101 places, 89 transitions, 773 flow. Second operand 8 states and 93 transitions. [2024-06-14 15:36:19,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 100 transitions, 995 flow [2024-06-14 15:36:19,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 100 transitions, 921 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 15:36:19,669 INFO L231 Difference]: Finished difference. Result has 102 places, 89 transitions, 768 flow [2024-06-14 15:36:19,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=768, PETRI_PLACES=102, PETRI_TRANSITIONS=89} [2024-06-14 15:36:19,670 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2024-06-14 15:36:19,670 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 89 transitions, 768 flow [2024-06-14 15:36:19,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:36:19,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:36:19,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:36:19,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 15:36:19,671 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:36:19,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:36:19,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1532029913, now seen corresponding path program 3 times [2024-06-14 15:36:19,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:36:19,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482127747] [2024-06-14 15:36:19,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:36:19,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:36:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:36:23,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:36:23,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:36:23,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482127747] [2024-06-14 15:36:23,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482127747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:36:23,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:36:23,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 15:36:23,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107539992] [2024-06-14 15:36:23,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:36:23,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 15:36:23,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:36:23,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 15:36:23,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 15:36:23,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:36:23,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 89 transitions, 768 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:36:23,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:36:23,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:36:23,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:36:24,205 INFO L124 PetriNetUnfolderBase]: 251/453 cut-off events. [2024-06-14 15:36:24,205 INFO L125 PetriNetUnfolderBase]: For 11875/11875 co-relation queries the response was YES. [2024-06-14 15:36:24,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2680 conditions, 453 events. 251/453 cut-off events. For 11875/11875 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1706 event pairs, 42 based on Foata normal form. 2/455 useless extension candidates. Maximal degree in co-relation 2630. Up to 400 conditions per place. [2024-06-14 15:36:24,208 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 83 selfloop transitions, 16 changer transitions 0/101 dead transitions. [2024-06-14 15:36:24,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 101 transitions, 994 flow [2024-06-14 15:36:24,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 15:36:24,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 15:36:24,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-14 15:36:24,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33984375 [2024-06-14 15:36:24,217 INFO L175 Difference]: Start difference. First operand has 102 places, 89 transitions, 768 flow. Second operand 8 states and 87 transitions. [2024-06-14 15:36:24,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 101 transitions, 994 flow [2024-06-14 15:36:24,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 101 transitions, 891 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 15:36:24,228 INFO L231 Difference]: Finished difference. Result has 101 places, 89 transitions, 701 flow [2024-06-14 15:36:24,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=701, PETRI_PLACES=101, PETRI_TRANSITIONS=89} [2024-06-14 15:36:24,229 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-06-14 15:36:24,229 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 89 transitions, 701 flow [2024-06-14 15:36:24,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:36:24,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:36:24,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:36:24,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 15:36:24,229 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:36:24,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:36:24,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1416733783, now seen corresponding path program 1 times [2024-06-14 15:36:24,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:36:24,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732375932] [2024-06-14 15:36:24,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:36:24,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:36:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:36:27,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:36:27,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:36:27,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732375932] [2024-06-14 15:36:27,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732375932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:36:27,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:36:27,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 15:36:27,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400652740] [2024-06-14 15:36:27,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:36:27,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 15:36:27,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:36:27,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 15:36:27,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 15:36:27,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:36:27,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 89 transitions, 701 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:36:27,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:36:27,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:36:27,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:36:28,227 INFO L124 PetriNetUnfolderBase]: 257/463 cut-off events. [2024-06-14 15:36:28,228 INFO L125 PetriNetUnfolderBase]: For 12724/12724 co-relation queries the response was YES. [2024-06-14 15:36:28,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2679 conditions, 463 events. 257/463 cut-off events. For 12724/12724 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1757 event pairs, 45 based on Foata normal form. 2/465 useless extension candidates. Maximal degree in co-relation 2629. Up to 301 conditions per place. [2024-06-14 15:36:28,231 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 64 selfloop transitions, 43 changer transitions 0/109 dead transitions. [2024-06-14 15:36:28,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 109 transitions, 1093 flow [2024-06-14 15:36:28,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 15:36:28,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 15:36:28,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-14 15:36:28,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-14 15:36:28,233 INFO L175 Difference]: Start difference. First operand has 101 places, 89 transitions, 701 flow. Second operand 8 states and 102 transitions. [2024-06-14 15:36:28,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 109 transitions, 1093 flow [2024-06-14 15:36:28,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 109 transitions, 1057 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 15:36:28,246 INFO L231 Difference]: Finished difference. Result has 103 places, 92 transitions, 786 flow [2024-06-14 15:36:28,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=786, PETRI_PLACES=103, PETRI_TRANSITIONS=92} [2024-06-14 15:36:28,250 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 72 predicate places. [2024-06-14 15:36:28,251 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 92 transitions, 786 flow [2024-06-14 15:36:28,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:36:28,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:36:28,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:36:28,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 15:36:28,251 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:36:28,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:36:28,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1416554045, now seen corresponding path program 1 times [2024-06-14 15:36:28,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:36:28,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501740107] [2024-06-14 15:36:28,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:36:28,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:36:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:36:32,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:36:32,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:36:32,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501740107] [2024-06-14 15:36:32,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501740107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:36:32,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:36:32,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:36:32,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405621148] [2024-06-14 15:36:32,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:36:32,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:36:32,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:36:32,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:36:32,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:36:32,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:36:32,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 92 transitions, 786 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:36:32,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:36:32,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:36:32,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:36:33,146 INFO L124 PetriNetUnfolderBase]: 285/509 cut-off events. [2024-06-14 15:36:33,146 INFO L125 PetriNetUnfolderBase]: For 15729/15729 co-relation queries the response was YES. [2024-06-14 15:36:33,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3013 conditions, 509 events. 285/509 cut-off events. For 15729/15729 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1977 event pairs, 43 based on Foata normal form. 6/515 useless extension candidates. Maximal degree in co-relation 2962. Up to 252 conditions per place. [2024-06-14 15:36:33,149 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 77 selfloop transitions, 41 changer transitions 0/120 dead transitions. [2024-06-14 15:36:33,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 120 transitions, 1254 flow [2024-06-14 15:36:33,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:36:33,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:36:33,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-14 15:36:33,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-14 15:36:33,151 INFO L175 Difference]: Start difference. First operand has 103 places, 92 transitions, 786 flow. Second operand 9 states and 118 transitions. [2024-06-14 15:36:33,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 120 transitions, 1254 flow [2024-06-14 15:36:33,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 120 transitions, 1157 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 15:36:33,168 INFO L231 Difference]: Finished difference. Result has 106 places, 100 transitions, 844 flow [2024-06-14 15:36:33,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=844, PETRI_PLACES=106, PETRI_TRANSITIONS=100} [2024-06-14 15:36:33,170 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-14 15:36:33,171 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 100 transitions, 844 flow [2024-06-14 15:36:33,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:36:33,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:36:33,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:36:33,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 15:36:33,171 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:36:33,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:36:33,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1416554293, now seen corresponding path program 2 times [2024-06-14 15:36:33,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:36:33,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56557474] [2024-06-14 15:36:33,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:36:33,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:36:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:36:36,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:36:36,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:36:36,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56557474] [2024-06-14 15:36:36,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56557474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:36:36,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:36:36,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 15:36:36,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967714076] [2024-06-14 15:36:36,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:36:36,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 15:36:36,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:36:36,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 15:36:36,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 15:36:36,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:36:36,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 100 transitions, 844 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:36:36,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:36:36,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:36:36,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:36:37,215 INFO L124 PetriNetUnfolderBase]: 293/522 cut-off events. [2024-06-14 15:36:37,216 INFO L125 PetriNetUnfolderBase]: For 15460/15460 co-relation queries the response was YES. [2024-06-14 15:36:37,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3212 conditions, 522 events. 293/522 cut-off events. For 15460/15460 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2046 event pairs, 44 based on Foata normal form. 1/523 useless extension candidates. Maximal degree in co-relation 3160. Up to 352 conditions per place. [2024-06-14 15:36:37,219 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 68 selfloop transitions, 48 changer transitions 0/118 dead transitions. [2024-06-14 15:36:37,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 118 transitions, 1276 flow [2024-06-14 15:36:37,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 15:36:37,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 15:36:37,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-14 15:36:37,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37890625 [2024-06-14 15:36:37,221 INFO L175 Difference]: Start difference. First operand has 106 places, 100 transitions, 844 flow. Second operand 8 states and 97 transitions. [2024-06-14 15:36:37,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 118 transitions, 1276 flow [2024-06-14 15:36:37,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 118 transitions, 1227 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-14 15:36:37,239 INFO L231 Difference]: Finished difference. Result has 111 places, 104 transitions, 962 flow [2024-06-14 15:36:37,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=962, PETRI_PLACES=111, PETRI_TRANSITIONS=104} [2024-06-14 15:36:37,240 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-14 15:36:37,240 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 104 transitions, 962 flow [2024-06-14 15:36:37,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:36:37,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:36:37,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:36:37,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 15:36:37,241 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:36:37,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:36:37,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1416560803, now seen corresponding path program 3 times [2024-06-14 15:36:37,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:36:37,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596654110] [2024-06-14 15:36:37,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:36:37,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:36:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:36:40,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:36:40,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:36:40,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596654110] [2024-06-14 15:36:40,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596654110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:36:40,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:36:40,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 15:36:40,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249498131] [2024-06-14 15:36:40,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:36:40,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 15:36:40,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:36:40,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 15:36:40,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 15:36:40,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:36:40,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 104 transitions, 962 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:36:40,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:36:40,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:36:40,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:36:41,215 INFO L124 PetriNetUnfolderBase]: 291/519 cut-off events. [2024-06-14 15:36:41,216 INFO L125 PetriNetUnfolderBase]: For 16338/16338 co-relation queries the response was YES. [2024-06-14 15:36:41,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3315 conditions, 519 events. 291/519 cut-off events. For 16338/16338 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2031 event pairs, 44 based on Foata normal form. 1/520 useless extension candidates. Maximal degree in co-relation 3260. Up to 351 conditions per place. [2024-06-14 15:36:41,218 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 70 selfloop transitions, 45 changer transitions 0/117 dead transitions. [2024-06-14 15:36:41,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 117 transitions, 1294 flow [2024-06-14 15:36:41,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 15:36:41,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 15:36:41,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-14 15:36:41,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 15:36:41,220 INFO L175 Difference]: Start difference. First operand has 111 places, 104 transitions, 962 flow. Second operand 8 states and 96 transitions. [2024-06-14 15:36:41,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 117 transitions, 1294 flow [2024-06-14 15:36:41,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 117 transitions, 1221 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-14 15:36:41,237 INFO L231 Difference]: Finished difference. Result has 115 places, 104 transitions, 984 flow [2024-06-14 15:36:41,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=984, PETRI_PLACES=115, PETRI_TRANSITIONS=104} [2024-06-14 15:36:41,238 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-14 15:36:41,238 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 104 transitions, 984 flow [2024-06-14 15:36:41,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:36:41,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:36:41,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:36:41,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 15:36:41,238 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:36:41,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:36:41,238 INFO L85 PathProgramCache]: Analyzing trace with hash 423965033, now seen corresponding path program 4 times [2024-06-14 15:36:41,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:36:41,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746293390] [2024-06-14 15:36:41,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:36:41,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:36:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:36:44,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:36:44,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:36:44,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746293390] [2024-06-14 15:36:44,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746293390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:36:44,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:36:44,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 15:36:44,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255502985] [2024-06-14 15:36:44,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:36:44,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 15:36:44,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:36:44,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 15:36:44,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 15:36:44,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:36:44,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 104 transitions, 984 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:36:44,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:36:44,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:36:44,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:36:45,150 INFO L124 PetriNetUnfolderBase]: 294/524 cut-off events. [2024-06-14 15:36:45,150 INFO L125 PetriNetUnfolderBase]: For 17508/17508 co-relation queries the response was YES. [2024-06-14 15:36:45,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3396 conditions, 524 events. 294/524 cut-off events. For 17508/17508 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2055 event pairs, 44 based on Foata normal form. 1/525 useless extension candidates. Maximal degree in co-relation 3340. Up to 500 conditions per place. [2024-06-14 15:36:45,153 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 99 selfloop transitions, 13 changer transitions 0/114 dead transitions. [2024-06-14 15:36:45,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 114 transitions, 1255 flow [2024-06-14 15:36:45,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 15:36:45,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 15:36:45,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-14 15:36:45,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31640625 [2024-06-14 15:36:45,154 INFO L175 Difference]: Start difference. First operand has 115 places, 104 transitions, 984 flow. Second operand 8 states and 81 transitions. [2024-06-14 15:36:45,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 114 transitions, 1255 flow [2024-06-14 15:36:45,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 114 transitions, 1143 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-14 15:36:45,176 INFO L231 Difference]: Finished difference. Result has 116 places, 106 transitions, 936 flow [2024-06-14 15:36:45,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=936, PETRI_PLACES=116, PETRI_TRANSITIONS=106} [2024-06-14 15:36:45,176 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 85 predicate places. [2024-06-14 15:36:45,176 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 106 transitions, 936 flow [2024-06-14 15:36:45,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:36:45,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:36:45,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:36:45,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 15:36:45,177 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:36:45,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:36:45,177 INFO L85 PathProgramCache]: Analyzing trace with hash -801642749, now seen corresponding path program 2 times [2024-06-14 15:36:45,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:36:45,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892930633] [2024-06-14 15:36:45,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:36:45,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:36:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:36:49,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:36:49,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:36:49,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892930633] [2024-06-14 15:36:49,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892930633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:36:49,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:36:49,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:36:49,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727592542] [2024-06-14 15:36:49,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:36:49,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:36:49,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:36:49,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:36:49,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:36:49,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:36:49,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 106 transitions, 936 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:36:49,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:36:49,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:36:49,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:36:49,582 INFO L124 PetriNetUnfolderBase]: 300/534 cut-off events. [2024-06-14 15:36:49,582 INFO L125 PetriNetUnfolderBase]: For 19059/19059 co-relation queries the response was YES. [2024-06-14 15:36:49,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3403 conditions, 534 events. 300/534 cut-off events. For 19059/19059 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2097 event pairs, 41 based on Foata normal form. 2/536 useless extension candidates. Maximal degree in co-relation 3346. Up to 502 conditions per place. [2024-06-14 15:36:49,585 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 103 selfloop transitions, 14 changer transitions 0/119 dead transitions. [2024-06-14 15:36:49,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 119 transitions, 1216 flow [2024-06-14 15:36:49,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:36:49,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:36:49,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-14 15:36:49,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-14 15:36:49,586 INFO L175 Difference]: Start difference. First operand has 116 places, 106 transitions, 936 flow. Second operand 9 states and 90 transitions. [2024-06-14 15:36:49,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 119 transitions, 1216 flow [2024-06-14 15:36:49,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 119 transitions, 1173 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 15:36:49,606 INFO L231 Difference]: Finished difference. Result has 119 places, 108 transitions, 952 flow [2024-06-14 15:36:49,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=952, PETRI_PLACES=119, PETRI_TRANSITIONS=108} [2024-06-14 15:36:49,607 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 88 predicate places. [2024-06-14 15:36:49,607 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 108 transitions, 952 flow [2024-06-14 15:36:49,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:36:49,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:36:49,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:36:49,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 15:36:49,607 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:36:49,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:36:49,608 INFO L85 PathProgramCache]: Analyzing trace with hash -982528569, now seen corresponding path program 3 times [2024-06-14 15:36:49,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:36:49,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773180838] [2024-06-14 15:36:49,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:36:49,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:36:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:36:53,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:36:53,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:36:53,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773180838] [2024-06-14 15:36:53,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773180838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:36:53,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:36:53,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:36:53,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739237783] [2024-06-14 15:36:53,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:36:53,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:36:53,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:36:53,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:36:53,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:36:53,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:36:53,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 108 transitions, 952 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:36:53,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:36:53,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:36:53,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:36:54,238 INFO L124 PetriNetUnfolderBase]: 306/544 cut-off events. [2024-06-14 15:36:54,238 INFO L125 PetriNetUnfolderBase]: For 20396/20396 co-relation queries the response was YES. [2024-06-14 15:36:54,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3510 conditions, 544 events. 306/544 cut-off events. For 20396/20396 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2155 event pairs, 41 based on Foata normal form. 2/546 useless extension candidates. Maximal degree in co-relation 3452. Up to 503 conditions per place. [2024-06-14 15:36:54,241 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 103 selfloop transitions, 17 changer transitions 0/122 dead transitions. [2024-06-14 15:36:54,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 122 transitions, 1244 flow [2024-06-14 15:36:54,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:36:54,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:36:54,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-14 15:36:54,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3229166666666667 [2024-06-14 15:36:54,242 INFO L175 Difference]: Start difference. First operand has 119 places, 108 transitions, 952 flow. Second operand 9 states and 93 transitions. [2024-06-14 15:36:54,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 122 transitions, 1244 flow [2024-06-14 15:36:54,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 122 transitions, 1203 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 15:36:54,263 INFO L231 Difference]: Finished difference. Result has 121 places, 110 transitions, 980 flow [2024-06-14 15:36:54,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=980, PETRI_PLACES=121, PETRI_TRANSITIONS=110} [2024-06-14 15:36:54,263 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-14 15:36:54,263 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 110 transitions, 980 flow [2024-06-14 15:36:54,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:36:54,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:36:54,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:36:54,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 15:36:54,264 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:36:54,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:36:54,264 INFO L85 PathProgramCache]: Analyzing trace with hash 528492435, now seen corresponding path program 4 times [2024-06-14 15:36:54,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:36:54,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383035410] [2024-06-14 15:36:54,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:36:54,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:36:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:36:58,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:36:58,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:36:58,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383035410] [2024-06-14 15:36:58,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383035410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:36:58,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:36:58,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:36:58,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352362498] [2024-06-14 15:36:58,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:36:58,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:36:58,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:36:58,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:36:58,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:36:58,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:36:58,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 110 transitions, 980 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:36:58,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:36:58,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:36:58,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:36:58,923 INFO L124 PetriNetUnfolderBase]: 312/554 cut-off events. [2024-06-14 15:36:58,923 INFO L125 PetriNetUnfolderBase]: For 21772/21772 co-relation queries the response was YES. [2024-06-14 15:36:58,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3617 conditions, 554 events. 312/554 cut-off events. For 21772/21772 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2199 event pairs, 41 based on Foata normal form. 2/556 useless extension candidates. Maximal degree in co-relation 3558. Up to 518 conditions per place. [2024-06-14 15:36:58,926 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 104 selfloop transitions, 17 changer transitions 0/123 dead transitions. [2024-06-14 15:36:58,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 123 transitions, 1276 flow [2024-06-14 15:36:58,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:36:58,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:36:58,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-14 15:36:58,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3194444444444444 [2024-06-14 15:36:58,927 INFO L175 Difference]: Start difference. First operand has 121 places, 110 transitions, 980 flow. Second operand 9 states and 92 transitions. [2024-06-14 15:36:58,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 123 transitions, 1276 flow [2024-06-14 15:36:58,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 123 transitions, 1225 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-14 15:36:58,948 INFO L231 Difference]: Finished difference. Result has 123 places, 112 transitions, 1002 flow [2024-06-14 15:36:58,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1002, PETRI_PLACES=123, PETRI_TRANSITIONS=112} [2024-06-14 15:36:58,948 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 92 predicate places. [2024-06-14 15:36:58,949 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 112 transitions, 1002 flow [2024-06-14 15:36:58,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:36:58,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:36:58,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:36:58,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 15:36:58,949 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:36:58,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:36:58,949 INFO L85 PathProgramCache]: Analyzing trace with hash -990803027, now seen corresponding path program 5 times [2024-06-14 15:36:58,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:36:58,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366724818] [2024-06-14 15:36:58,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:36:58,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:36:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:37:02,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:37:02,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:37:02,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366724818] [2024-06-14 15:37:02,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366724818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:37:02,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:37:02,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 15:37:02,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544625545] [2024-06-14 15:37:02,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:37:02,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 15:37:02,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:37:02,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 15:37:02,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 15:37:02,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:37:02,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 112 transitions, 1002 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:37:02,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:37:02,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:37:02,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:37:02,910 INFO L124 PetriNetUnfolderBase]: 315/559 cut-off events. [2024-06-14 15:37:02,910 INFO L125 PetriNetUnfolderBase]: For 22424/22424 co-relation queries the response was YES. [2024-06-14 15:37:02,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3678 conditions, 559 events. 315/559 cut-off events. For 22424/22424 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2241 event pairs, 45 based on Foata normal form. 1/560 useless extension candidates. Maximal degree in co-relation 3618. Up to 525 conditions per place. [2024-06-14 15:37:02,914 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 105 selfloop transitions, 18 changer transitions 0/125 dead transitions. [2024-06-14 15:37:02,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 125 transitions, 1400 flow [2024-06-14 15:37:02,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 15:37:02,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 15:37:02,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-14 15:37:02,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33203125 [2024-06-14 15:37:02,933 INFO L175 Difference]: Start difference. First operand has 123 places, 112 transitions, 1002 flow. Second operand 8 states and 85 transitions. [2024-06-14 15:37:02,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 125 transitions, 1400 flow [2024-06-14 15:37:02,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 125 transitions, 1345 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 15:37:02,959 INFO L231 Difference]: Finished difference. Result has 124 places, 116 transitions, 1054 flow [2024-06-14 15:37:02,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1054, PETRI_PLACES=124, PETRI_TRANSITIONS=116} [2024-06-14 15:37:02,960 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 93 predicate places. [2024-06-14 15:37:02,960 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 116 transitions, 1054 flow [2024-06-14 15:37:02,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:37:02,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:37:02,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:37:02,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 15:37:02,960 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:37:02,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:37:02,961 INFO L85 PathProgramCache]: Analyzing trace with hash -810220387, now seen corresponding path program 6 times [2024-06-14 15:37:02,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:37:02,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972053346] [2024-06-14 15:37:02,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:37:02,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:37:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:37:06,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:37:06,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:37:06,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972053346] [2024-06-14 15:37:06,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972053346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:37:06,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:37:06,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 15:37:06,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279375394] [2024-06-14 15:37:06,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:37:06,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 15:37:06,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:37:06,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 15:37:06,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 15:37:06,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:37:06,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 116 transitions, 1054 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:37:06,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:37:06,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:37:06,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:37:07,013 INFO L124 PetriNetUnfolderBase]: 313/556 cut-off events. [2024-06-14 15:37:07,013 INFO L125 PetriNetUnfolderBase]: For 22871/22871 co-relation queries the response was YES. [2024-06-14 15:37:07,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3634 conditions, 556 events. 313/556 cut-off events. For 22871/22871 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2229 event pairs, 45 based on Foata normal form. 1/557 useless extension candidates. Maximal degree in co-relation 3573. Up to 523 conditions per place. [2024-06-14 15:37:07,017 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 104 selfloop transitions, 18 changer transitions 0/124 dead transitions. [2024-06-14 15:37:07,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 124 transitions, 1316 flow [2024-06-14 15:37:07,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 15:37:07,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 15:37:07,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-14 15:37:07,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-14 15:37:07,018 INFO L175 Difference]: Start difference. First operand has 124 places, 116 transitions, 1054 flow. Second operand 8 states and 84 transitions. [2024-06-14 15:37:07,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 124 transitions, 1316 flow [2024-06-14 15:37:07,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 124 transitions, 1254 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-14 15:37:07,043 INFO L231 Difference]: Finished difference. Result has 128 places, 116 transitions, 1033 flow [2024-06-14 15:37:07,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1033, PETRI_PLACES=128, PETRI_TRANSITIONS=116} [2024-06-14 15:37:07,044 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 97 predicate places. [2024-06-14 15:37:07,044 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 116 transitions, 1033 flow [2024-06-14 15:37:07,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:37:07,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:37:07,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:37:07,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 15:37:07,045 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:37:07,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:37:07,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1038114779, now seen corresponding path program 5 times [2024-06-14 15:37:07,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:37:07,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036300372] [2024-06-14 15:37:07,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:37:07,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:37:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:37:12,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:37:12,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:37:12,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036300372] [2024-06-14 15:37:12,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036300372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:37:12,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:37:12,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:37:12,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792715153] [2024-06-14 15:37:12,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:37:12,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:37:12,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:37:12,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:37:12,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:37:12,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:37:12,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 116 transitions, 1033 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:37:12,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:37:12,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:37:12,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:37:12,601 INFO L124 PetriNetUnfolderBase]: 309/550 cut-off events. [2024-06-14 15:37:12,602 INFO L125 PetriNetUnfolderBase]: For 23249/23249 co-relation queries the response was YES. [2024-06-14 15:37:12,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3544 conditions, 550 events. 309/550 cut-off events. For 23249/23249 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2188 event pairs, 40 based on Foata normal form. 2/552 useless extension candidates. Maximal degree in co-relation 3481. Up to 482 conditions per place. [2024-06-14 15:37:12,613 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 102 selfloop transitions, 26 changer transitions 0/130 dead transitions. [2024-06-14 15:37:12,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 130 transitions, 1349 flow [2024-06-14 15:37:12,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:37:12,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:37:12,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 15:37:12,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-14 15:37:12,617 INFO L175 Difference]: Start difference. First operand has 128 places, 116 transitions, 1033 flow. Second operand 9 states and 97 transitions. [2024-06-14 15:37:12,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 130 transitions, 1349 flow [2024-06-14 15:37:12,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 130 transitions, 1308 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-14 15:37:12,648 INFO L231 Difference]: Finished difference. Result has 130 places, 118 transitions, 1087 flow [2024-06-14 15:37:12,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1087, PETRI_PLACES=130, PETRI_TRANSITIONS=118} [2024-06-14 15:37:12,648 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 99 predicate places. [2024-06-14 15:37:12,648 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 118 transitions, 1087 flow [2024-06-14 15:37:12,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:37:12,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:37:12,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:37:12,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 15:37:12,649 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:37:12,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:37:12,649 INFO L85 PathProgramCache]: Analyzing trace with hash -982220987, now seen corresponding path program 1 times [2024-06-14 15:37:12,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:37:12,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797621931] [2024-06-14 15:37:12,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:37:12,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:37:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:37:18,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:37:18,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:37:18,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797621931] [2024-06-14 15:37:18,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797621931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:37:18,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:37:18,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:37:18,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653214591] [2024-06-14 15:37:18,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:37:18,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:37:18,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:37:18,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:37:18,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:37:18,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:37:18,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 118 transitions, 1087 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:37:18,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:37:18,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:37:18,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:37:18,622 INFO L124 PetriNetUnfolderBase]: 306/545 cut-off events. [2024-06-14 15:37:18,623 INFO L125 PetriNetUnfolderBase]: For 23226/23226 co-relation queries the response was YES. [2024-06-14 15:37:18,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3521 conditions, 545 events. 306/545 cut-off events. For 23226/23226 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2160 event pairs, 39 based on Foata normal form. 2/547 useless extension candidates. Maximal degree in co-relation 3457. Up to 515 conditions per place. [2024-06-14 15:37:18,626 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 114 selfloop transitions, 13 changer transitions 0/129 dead transitions. [2024-06-14 15:37:18,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 129 transitions, 1365 flow [2024-06-14 15:37:18,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:37:18,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:37:18,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-14 15:37:18,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-06-14 15:37:18,627 INFO L175 Difference]: Start difference. First operand has 130 places, 118 transitions, 1087 flow. Second operand 9 states and 88 transitions. [2024-06-14 15:37:18,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 129 transitions, 1365 flow [2024-06-14 15:37:18,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 129 transitions, 1288 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 15:37:18,659 INFO L231 Difference]: Finished difference. Result has 132 places, 118 transitions, 1040 flow [2024-06-14 15:37:18,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1040, PETRI_PLACES=132, PETRI_TRANSITIONS=118} [2024-06-14 15:37:18,660 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-14 15:37:18,660 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 118 transitions, 1040 flow [2024-06-14 15:37:18,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:37:18,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:37:18,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:37:18,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 15:37:18,660 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:37:18,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:37:18,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1823488987, now seen corresponding path program 1 times [2024-06-14 15:37:18,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:37:18,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835811959] [2024-06-14 15:37:18,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:37:18,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:37:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:37:23,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:37:23,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:37:23,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835811959] [2024-06-14 15:37:23,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835811959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:37:23,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:37:23,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 15:37:23,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305368848] [2024-06-14 15:37:23,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:37:23,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 15:37:23,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:37:23,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 15:37:23,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 15:37:23,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:37:23,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 118 transitions, 1040 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:37:23,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:37:23,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:37:23,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:37:23,403 INFO L124 PetriNetUnfolderBase]: 310/553 cut-off events. [2024-06-14 15:37:23,403 INFO L125 PetriNetUnfolderBase]: For 23986/23986 co-relation queries the response was YES. [2024-06-14 15:37:23,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3504 conditions, 553 events. 310/553 cut-off events. For 23986/23986 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2219 event pairs, 24 based on Foata normal form. 2/555 useless extension candidates. Maximal degree in co-relation 3439. Up to 361 conditions per place. [2024-06-14 15:37:23,407 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 104 selfloop transitions, 28 changer transitions 0/134 dead transitions. [2024-06-14 15:37:23,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 134 transitions, 1424 flow [2024-06-14 15:37:23,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 15:37:23,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 15:37:23,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-14 15:37:23,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-14 15:37:23,408 INFO L175 Difference]: Start difference. First operand has 132 places, 118 transitions, 1040 flow. Second operand 8 states and 89 transitions. [2024-06-14 15:37:23,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 134 transitions, 1424 flow [2024-06-14 15:37:23,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 134 transitions, 1387 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 15:37:23,447 INFO L231 Difference]: Finished difference. Result has 132 places, 119 transitions, 1071 flow [2024-06-14 15:37:23,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1071, PETRI_PLACES=132, PETRI_TRANSITIONS=119} [2024-06-14 15:37:23,447 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-14 15:37:23,447 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 119 transitions, 1071 flow [2024-06-14 15:37:23,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:37:23,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:37:23,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:37:23,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 15:37:23,448 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:37:23,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:37:23,448 INFO L85 PathProgramCache]: Analyzing trace with hash -334977345, now seen corresponding path program 2 times [2024-06-14 15:37:23,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:37:23,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991571325] [2024-06-14 15:37:23,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:37:23,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:37:23,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:37:27,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:37:27,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:37:27,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991571325] [2024-06-14 15:37:27,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991571325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:37:27,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:37:27,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 15:37:27,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125833780] [2024-06-14 15:37:27,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:37:27,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 15:37:27,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:37:27,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 15:37:27,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 15:37:27,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:37:27,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 119 transitions, 1071 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:37:27,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:37:27,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:37:27,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:37:28,079 INFO L124 PetriNetUnfolderBase]: 328/587 cut-off events. [2024-06-14 15:37:28,079 INFO L125 PetriNetUnfolderBase]: For 28461/28461 co-relation queries the response was YES. [2024-06-14 15:37:28,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3838 conditions, 587 events. 328/587 cut-off events. For 28461/28461 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2427 event pairs, 45 based on Foata normal form. 2/589 useless extension candidates. Maximal degree in co-relation 3773. Up to 439 conditions per place. [2024-06-14 15:37:28,083 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 101 selfloop transitions, 33 changer transitions 0/136 dead transitions. [2024-06-14 15:37:28,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 136 transitions, 1477 flow [2024-06-14 15:37:28,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 15:37:28,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 15:37:28,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-14 15:37:28,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-14 15:37:28,083 INFO L175 Difference]: Start difference. First operand has 132 places, 119 transitions, 1071 flow. Second operand 8 states and 94 transitions. [2024-06-14 15:37:28,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 136 transitions, 1477 flow [2024-06-14 15:37:28,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 136 transitions, 1412 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-14 15:37:28,121 INFO L231 Difference]: Finished difference. Result has 136 places, 122 transitions, 1115 flow [2024-06-14 15:37:28,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1115, PETRI_PLACES=136, PETRI_TRANSITIONS=122} [2024-06-14 15:37:28,122 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 105 predicate places. [2024-06-14 15:37:28,122 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 122 transitions, 1115 flow [2024-06-14 15:37:28,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:37:28,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:37:28,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:37:28,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 15:37:28,122 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:37:28,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:37:28,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1201860157, now seen corresponding path program 3 times [2024-06-14 15:37:28,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:37:28,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432157026] [2024-06-14 15:37:28,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:37:28,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:37:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:37:32,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:37:32,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:37:32,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432157026] [2024-06-14 15:37:32,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432157026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:37:32,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:37:32,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 15:37:32,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620246855] [2024-06-14 15:37:32,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:37:32,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 15:37:32,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:37:32,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 15:37:32,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 15:37:32,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:37:32,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 122 transitions, 1115 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:37:32,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:37:32,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:37:32,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:37:32,657 INFO L124 PetriNetUnfolderBase]: 325/582 cut-off events. [2024-06-14 15:37:32,657 INFO L125 PetriNetUnfolderBase]: For 28233/28233 co-relation queries the response was YES. [2024-06-14 15:37:32,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3783 conditions, 582 events. 325/582 cut-off events. For 28233/28233 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2395 event pairs, 46 based on Foata normal form. 2/584 useless extension candidates. Maximal degree in co-relation 3716. Up to 470 conditions per place. [2024-06-14 15:37:32,661 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 99 selfloop transitions, 33 changer transitions 0/134 dead transitions. [2024-06-14 15:37:32,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 134 transitions, 1407 flow [2024-06-14 15:37:32,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 15:37:32,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 15:37:32,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-14 15:37:32,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-14 15:37:32,663 INFO L175 Difference]: Start difference. First operand has 136 places, 122 transitions, 1115 flow. Second operand 8 states and 94 transitions. [2024-06-14 15:37:32,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 134 transitions, 1407 flow [2024-06-14 15:37:32,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 134 transitions, 1362 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 15:37:32,719 INFO L231 Difference]: Finished difference. Result has 140 places, 122 transitions, 1140 flow [2024-06-14 15:37:32,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1070, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1140, PETRI_PLACES=140, PETRI_TRANSITIONS=122} [2024-06-14 15:37:32,719 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 109 predicate places. [2024-06-14 15:37:32,719 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 122 transitions, 1140 flow [2024-06-14 15:37:32,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:37:32,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:37:32,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:37:32,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 15:37:32,720 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:37:32,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:37:32,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1819673972, now seen corresponding path program 1 times [2024-06-14 15:37:32,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:37:32,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775146611] [2024-06-14 15:37:32,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:37:32,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:37:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:37:37,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:37:37,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:37:37,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775146611] [2024-06-14 15:37:37,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775146611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:37:37,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:37:37,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:37:37,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123945289] [2024-06-14 15:37:37,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:37:37,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:37:37,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:37:37,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:37:37,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:37:37,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:37:37,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 122 transitions, 1140 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:37:37,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:37:37,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:37:37,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:37:37,560 INFO L124 PetriNetUnfolderBase]: 328/587 cut-off events. [2024-06-14 15:37:37,560 INFO L125 PetriNetUnfolderBase]: For 28636/28636 co-relation queries the response was YES. [2024-06-14 15:37:37,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3876 conditions, 587 events. 328/587 cut-off events. For 28636/28636 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2433 event pairs, 47 based on Foata normal form. 1/588 useless extension candidates. Maximal degree in co-relation 3807. Up to 476 conditions per place. [2024-06-14 15:37:37,565 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 97 selfloop transitions, 39 changer transitions 0/138 dead transitions. [2024-06-14 15:37:37,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 138 transitions, 1472 flow [2024-06-14 15:37:37,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:37:37,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:37:37,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-14 15:37:37,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-14 15:37:37,567 INFO L175 Difference]: Start difference. First operand has 140 places, 122 transitions, 1140 flow. Second operand 9 states and 101 transitions. [2024-06-14 15:37:37,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 138 transitions, 1472 flow [2024-06-14 15:37:37,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 138 transitions, 1406 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-14 15:37:37,610 INFO L231 Difference]: Finished difference. Result has 145 places, 126 transitions, 1229 flow [2024-06-14 15:37:37,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1229, PETRI_PLACES=145, PETRI_TRANSITIONS=126} [2024-06-14 15:37:37,611 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 114 predicate places. [2024-06-14 15:37:37,611 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 126 transitions, 1229 flow [2024-06-14 15:37:37,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:37:37,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:37:37,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:37:37,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 15:37:37,612 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:37:37,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:37:37,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1115024197, now seen corresponding path program 4 times [2024-06-14 15:37:37,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:37:37,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633817749] [2024-06-14 15:37:37,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:37:37,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:37:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:37:42,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:37:42,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:37:42,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633817749] [2024-06-14 15:37:42,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633817749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:37:42,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:37:42,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:37:42,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566634350] [2024-06-14 15:37:42,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:37:42,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:37:42,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:37:42,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:37:42,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:37:42,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:37:42,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 126 transitions, 1229 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:37:42,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:37:42,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:37:42,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:37:42,922 INFO L124 PetriNetUnfolderBase]: 325/582 cut-off events. [2024-06-14 15:37:42,922 INFO L125 PetriNetUnfolderBase]: For 29063/29063 co-relation queries the response was YES. [2024-06-14 15:37:42,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3886 conditions, 582 events. 325/582 cut-off events. For 29063/29063 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2399 event pairs, 45 based on Foata normal form. 2/584 useless extension candidates. Maximal degree in co-relation 3814. Up to 464 conditions per place. [2024-06-14 15:37:42,926 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 103 selfloop transitions, 34 changer transitions 0/139 dead transitions. [2024-06-14 15:37:42,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 139 transitions, 1533 flow [2024-06-14 15:37:42,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:37:42,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:37:42,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-14 15:37:42,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-14 15:37:42,929 INFO L175 Difference]: Start difference. First operand has 145 places, 126 transitions, 1229 flow. Second operand 9 states and 101 transitions. [2024-06-14 15:37:42,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 139 transitions, 1533 flow [2024-06-14 15:37:42,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 139 transitions, 1473 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 15:37:42,981 INFO L231 Difference]: Finished difference. Result has 149 places, 126 transitions, 1243 flow [2024-06-14 15:37:42,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1243, PETRI_PLACES=149, PETRI_TRANSITIONS=126} [2024-06-14 15:37:42,982 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 118 predicate places. [2024-06-14 15:37:42,982 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 126 transitions, 1243 flow [2024-06-14 15:37:42,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:37:42,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:37:42,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:37:42,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 15:37:42,983 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:37:42,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:37:42,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1115024042, now seen corresponding path program 2 times [2024-06-14 15:37:42,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:37:42,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179614136] [2024-06-14 15:37:42,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:37:42,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:37:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:37:47,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:37:47,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:37:47,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179614136] [2024-06-14 15:37:47,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179614136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:37:47,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:37:47,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:37:47,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553264480] [2024-06-14 15:37:47,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:37:47,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:37:47,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:37:47,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:37:47,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:37:47,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:37:47,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 126 transitions, 1243 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:37:47,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:37:47,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:37:47,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:37:47,892 INFO L124 PetriNetUnfolderBase]: 323/579 cut-off events. [2024-06-14 15:37:47,893 INFO L125 PetriNetUnfolderBase]: For 28480/28480 co-relation queries the response was YES. [2024-06-14 15:37:47,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3867 conditions, 579 events. 323/579 cut-off events. For 28480/28480 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2384 event pairs, 46 based on Foata normal form. 1/580 useless extension candidates. Maximal degree in co-relation 3794. Up to 459 conditions per place. [2024-06-14 15:37:47,896 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 92 selfloop transitions, 44 changer transitions 0/138 dead transitions. [2024-06-14 15:37:47,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 138 transitions, 1543 flow [2024-06-14 15:37:47,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:37:47,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:37:47,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 15:37:47,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-14 15:37:47,897 INFO L175 Difference]: Start difference. First operand has 149 places, 126 transitions, 1243 flow. Second operand 9 states and 103 transitions. [2024-06-14 15:37:47,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 138 transitions, 1543 flow [2024-06-14 15:37:47,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 138 transitions, 1463 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 15:37:47,945 INFO L231 Difference]: Finished difference. Result has 149 places, 126 transitions, 1256 flow [2024-06-14 15:37:47,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1163, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1256, PETRI_PLACES=149, PETRI_TRANSITIONS=126} [2024-06-14 15:37:47,945 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 118 predicate places. [2024-06-14 15:37:47,945 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 126 transitions, 1256 flow [2024-06-14 15:37:47,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:37:47,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:37:47,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:37:47,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 15:37:47,946 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:37:47,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:37:47,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1681299427, now seen corresponding path program 5 times [2024-06-14 15:37:47,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:37:47,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625545895] [2024-06-14 15:37:47,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:37:47,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:37:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:37:52,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:37:52,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:37:52,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625545895] [2024-06-14 15:37:52,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625545895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:37:52,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:37:52,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 15:37:52,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103177846] [2024-06-14 15:37:52,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:37:52,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 15:37:52,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:37:52,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 15:37:52,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 15:37:52,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:37:52,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 126 transitions, 1256 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:37:52,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:37:52,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:37:52,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:37:52,727 INFO L124 PetriNetUnfolderBase]: 327/587 cut-off events. [2024-06-14 15:37:52,728 INFO L125 PetriNetUnfolderBase]: For 29414/29414 co-relation queries the response was YES. [2024-06-14 15:37:52,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3899 conditions, 587 events. 327/587 cut-off events. For 29414/29414 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2432 event pairs, 24 based on Foata normal form. 2/589 useless extension candidates. Maximal degree in co-relation 3826. Up to 431 conditions per place. [2024-06-14 15:37:52,732 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 106 selfloop transitions, 36 changer transitions 0/144 dead transitions. [2024-06-14 15:37:52,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 144 transitions, 1675 flow [2024-06-14 15:37:52,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 15:37:52,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 15:37:52,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-14 15:37:52,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37890625 [2024-06-14 15:37:52,733 INFO L175 Difference]: Start difference. First operand has 149 places, 126 transitions, 1256 flow. Second operand 8 states and 97 transitions. [2024-06-14 15:37:52,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 144 transitions, 1675 flow [2024-06-14 15:37:52,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 144 transitions, 1568 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-14 15:37:52,787 INFO L231 Difference]: Finished difference. Result has 149 places, 127 transitions, 1232 flow [2024-06-14 15:37:52,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1149, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1232, PETRI_PLACES=149, PETRI_TRANSITIONS=127} [2024-06-14 15:37:52,787 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 118 predicate places. [2024-06-14 15:37:52,787 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 127 transitions, 1232 flow [2024-06-14 15:37:52,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:37:52,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:37:52,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:37:52,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 15:37:52,788 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:37:52,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:37:52,788 INFO L85 PathProgramCache]: Analyzing trace with hash -969222841, now seen corresponding path program 6 times [2024-06-14 15:37:52,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:37:52,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621909934] [2024-06-14 15:37:52,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:37:52,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:37:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:37:57,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:37:57,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:37:57,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621909934] [2024-06-14 15:37:57,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621909934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:37:57,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:37:57,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 15:37:57,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770299168] [2024-06-14 15:37:57,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:37:57,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 15:37:57,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:37:57,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 15:37:57,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 15:37:57,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:37:57,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 127 transitions, 1232 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:37:57,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:37:57,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:37:57,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:37:57,611 INFO L124 PetriNetUnfolderBase]: 324/582 cut-off events. [2024-06-14 15:37:57,611 INFO L125 PetriNetUnfolderBase]: For 28743/28743 co-relation queries the response was YES. [2024-06-14 15:37:57,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3810 conditions, 582 events. 324/582 cut-off events. For 28743/28743 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2414 event pairs, 44 based on Foata normal form. 2/584 useless extension candidates. Maximal degree in co-relation 3736. Up to 470 conditions per place. [2024-06-14 15:37:57,614 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 105 selfloop transitions, 35 changer transitions 0/142 dead transitions. [2024-06-14 15:37:57,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 142 transitions, 1548 flow [2024-06-14 15:37:57,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 15:37:57,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 15:37:57,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-14 15:37:57,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 15:37:57,616 INFO L175 Difference]: Start difference. First operand has 149 places, 127 transitions, 1232 flow. Second operand 8 states and 96 transitions. [2024-06-14 15:37:57,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 142 transitions, 1548 flow [2024-06-14 15:37:57,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 142 transitions, 1437 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 15:37:57,670 INFO L231 Difference]: Finished difference. Result has 149 places, 127 transitions, 1195 flow [2024-06-14 15:37:57,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1121, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1195, PETRI_PLACES=149, PETRI_TRANSITIONS=127} [2024-06-14 15:37:57,671 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 118 predicate places. [2024-06-14 15:37:57,671 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 127 transitions, 1195 flow [2024-06-14 15:37:57,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:37:57,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:37:57,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:37:57,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 15:37:57,671 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:37:57,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:37:57,671 INFO L85 PathProgramCache]: Analyzing trace with hash -969072956, now seen corresponding path program 3 times [2024-06-14 15:37:57,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:37:57,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330203969] [2024-06-14 15:37:57,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:37:57,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:37:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:38:02,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:38:02,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:38:02,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330203969] [2024-06-14 15:38:02,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330203969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:38:02,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:38:02,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:38:02,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427255275] [2024-06-14 15:38:02,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:38:02,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:38:02,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:38:02,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:38:02,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:38:02,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:38:02,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 127 transitions, 1195 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:38:02,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:38:02,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:38:02,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:38:02,490 INFO L124 PetriNetUnfolderBase]: 327/587 cut-off events. [2024-06-14 15:38:02,490 INFO L125 PetriNetUnfolderBase]: For 28852/28852 co-relation queries the response was YES. [2024-06-14 15:38:02,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3773 conditions, 587 events. 327/587 cut-off events. For 28852/28852 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2439 event pairs, 45 based on Foata normal form. 1/588 useless extension candidates. Maximal degree in co-relation 3700. Up to 476 conditions per place. [2024-06-14 15:38:02,493 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 97 selfloop transitions, 45 changer transitions 0/144 dead transitions. [2024-06-14 15:38:02,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 144 transitions, 1543 flow [2024-06-14 15:38:02,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:38:02,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:38:02,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-14 15:38:02,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-14 15:38:02,495 INFO L175 Difference]: Start difference. First operand has 149 places, 127 transitions, 1195 flow. Second operand 9 states and 104 transitions. [2024-06-14 15:38:02,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 144 transitions, 1543 flow [2024-06-14 15:38:02,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 144 transitions, 1462 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-14 15:38:02,548 INFO L231 Difference]: Finished difference. Result has 151 places, 129 transitions, 1241 flow [2024-06-14 15:38:02,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1241, PETRI_PLACES=151, PETRI_TRANSITIONS=129} [2024-06-14 15:38:02,548 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2024-06-14 15:38:02,548 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 129 transitions, 1241 flow [2024-06-14 15:38:02,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:38:02,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:38:02,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:38:02,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 15:38:02,548 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:38:02,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:38:02,549 INFO L85 PathProgramCache]: Analyzing trace with hash -969078691, now seen corresponding path program 7 times [2024-06-14 15:38:02,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:38:02,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665614002] [2024-06-14 15:38:02,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:38:02,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:38:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:38:07,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:38:07,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:38:07,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665614002] [2024-06-14 15:38:07,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665614002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:38:07,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:38:07,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:38:07,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524617768] [2024-06-14 15:38:07,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:38:07,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:38:07,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:38:07,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:38:07,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:38:07,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:38:07,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 129 transitions, 1241 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:38:07,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:38:07,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:38:07,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:38:07,737 INFO L124 PetriNetUnfolderBase]: 334/600 cut-off events. [2024-06-14 15:38:07,738 INFO L125 PetriNetUnfolderBase]: For 31139/31139 co-relation queries the response was YES. [2024-06-14 15:38:07,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3846 conditions, 600 events. 334/600 cut-off events. For 31139/31139 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2521 event pairs, 44 based on Foata normal form. 2/602 useless extension candidates. Maximal degree in co-relation 3773. Up to 481 conditions per place. [2024-06-14 15:38:07,741 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 108 selfloop transitions, 38 changer transitions 0/148 dead transitions. [2024-06-14 15:38:07,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 148 transitions, 1596 flow [2024-06-14 15:38:07,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:38:07,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:38:07,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-14 15:38:07,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-14 15:38:07,742 INFO L175 Difference]: Start difference. First operand has 151 places, 129 transitions, 1241 flow. Second operand 9 states and 104 transitions. [2024-06-14 15:38:07,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 148 transitions, 1596 flow [2024-06-14 15:38:07,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 148 transitions, 1457 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 15:38:07,798 INFO L231 Difference]: Finished difference. Result has 153 places, 132 transitions, 1211 flow [2024-06-14 15:38:07,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1211, PETRI_PLACES=153, PETRI_TRANSITIONS=132} [2024-06-14 15:38:07,798 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 122 predicate places. [2024-06-14 15:38:07,798 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 132 transitions, 1211 flow [2024-06-14 15:38:07,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:38:07,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:38:07,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:38:07,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 15:38:07,799 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:38:07,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:38:07,799 INFO L85 PathProgramCache]: Analyzing trace with hash -969072739, now seen corresponding path program 1 times [2024-06-14 15:38:07,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:38:07,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106024831] [2024-06-14 15:38:07,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:38:07,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:38:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:38:12,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:38:12,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:38:12,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106024831] [2024-06-14 15:38:12,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106024831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:38:12,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:38:12,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:38:12,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008010659] [2024-06-14 15:38:12,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:38:12,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:38:12,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:38:12,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:38:12,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:38:12,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:38:12,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 132 transitions, 1211 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:38:12,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:38:12,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:38:12,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:38:12,700 INFO L124 PetriNetUnfolderBase]: 346/620 cut-off events. [2024-06-14 15:38:12,700 INFO L125 PetriNetUnfolderBase]: For 34877/34877 co-relation queries the response was YES. [2024-06-14 15:38:12,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3942 conditions, 620 events. 346/620 cut-off events. For 34877/34877 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2628 event pairs, 45 based on Foata normal form. 4/624 useless extension candidates. Maximal degree in co-relation 3868. Up to 308 conditions per place. [2024-06-14 15:38:12,704 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 95 selfloop transitions, 60 changer transitions 0/157 dead transitions. [2024-06-14 15:38:12,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 157 transitions, 1819 flow [2024-06-14 15:38:12,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:38:12,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:38:12,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-14 15:38:12,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-14 15:38:12,705 INFO L175 Difference]: Start difference. First operand has 153 places, 132 transitions, 1211 flow. Second operand 9 states and 118 transitions. [2024-06-14 15:38:12,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 157 transitions, 1819 flow [2024-06-14 15:38:12,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 157 transitions, 1755 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 15:38:12,763 INFO L231 Difference]: Finished difference. Result has 156 places, 135 transitions, 1320 flow [2024-06-14 15:38:12,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1320, PETRI_PLACES=156, PETRI_TRANSITIONS=135} [2024-06-14 15:38:12,763 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 125 predicate places. [2024-06-14 15:38:12,763 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 135 transitions, 1320 flow [2024-06-14 15:38:12,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:38:12,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:38:12,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:38:12,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 15:38:12,764 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:38:12,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:38:12,764 INFO L85 PathProgramCache]: Analyzing trace with hash -969078536, now seen corresponding path program 4 times [2024-06-14 15:38:12,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:38:12,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787966224] [2024-06-14 15:38:12,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:38:12,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:38:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:38:16,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:38:16,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:38:16,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787966224] [2024-06-14 15:38:16,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787966224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:38:16,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:38:16,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 15:38:16,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493713235] [2024-06-14 15:38:16,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:38:16,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 15:38:16,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:38:16,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 15:38:16,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 15:38:16,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:38:16,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 135 transitions, 1320 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:38:16,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:38:16,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:38:16,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:38:17,147 INFO L124 PetriNetUnfolderBase]: 349/625 cut-off events. [2024-06-14 15:38:17,148 INFO L125 PetriNetUnfolderBase]: For 31604/31604 co-relation queries the response was YES. [2024-06-14 15:38:17,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4095 conditions, 625 events. 349/625 cut-off events. For 31604/31604 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2655 event pairs, 45 based on Foata normal form. 1/626 useless extension candidates. Maximal degree in co-relation 4021. Up to 477 conditions per place. [2024-06-14 15:38:17,152 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 99 selfloop transitions, 54 changer transitions 0/155 dead transitions. [2024-06-14 15:38:17,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 155 transitions, 1800 flow [2024-06-14 15:38:17,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 15:38:17,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 15:38:17,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-14 15:38:17,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-14 15:38:17,154 INFO L175 Difference]: Start difference. First operand has 156 places, 135 transitions, 1320 flow. Second operand 8 states and 103 transitions. [2024-06-14 15:38:17,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 155 transitions, 1800 flow [2024-06-14 15:38:17,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 155 transitions, 1655 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-14 15:38:17,212 INFO L231 Difference]: Finished difference. Result has 157 places, 137 transitions, 1323 flow [2024-06-14 15:38:17,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1177, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1323, PETRI_PLACES=157, PETRI_TRANSITIONS=137} [2024-06-14 15:38:17,213 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 126 predicate places. [2024-06-14 15:38:17,213 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 137 transitions, 1323 flow [2024-06-14 15:38:17,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:38:17,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:38:17,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:38:17,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 15:38:17,213 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:38:17,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:38:17,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1675783225, now seen corresponding path program 2 times [2024-06-14 15:38:17,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:38:17,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086838036] [2024-06-14 15:38:17,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:38:17,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:38:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:38:22,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:38:22,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:38:22,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086838036] [2024-06-14 15:38:22,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086838036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:38:22,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:38:22,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:38:22,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884006225] [2024-06-14 15:38:22,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:38:22,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:38:22,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:38:22,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:38:22,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:38:22,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:38:22,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 137 transitions, 1323 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:38:22,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:38:22,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:38:22,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:38:22,725 INFO L124 PetriNetUnfolderBase]: 365/651 cut-off events. [2024-06-14 15:38:22,725 INFO L125 PetriNetUnfolderBase]: For 36220/36220 co-relation queries the response was YES. [2024-06-14 15:38:22,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4322 conditions, 651 events. 365/651 cut-off events. For 36220/36220 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2802 event pairs, 41 based on Foata normal form. 2/653 useless extension candidates. Maximal degree in co-relation 4247. Up to 315 conditions per place. [2024-06-14 15:38:22,729 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 97 selfloop transitions, 62 changer transitions 0/161 dead transitions. [2024-06-14 15:38:22,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 161 transitions, 1967 flow [2024-06-14 15:38:22,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:38:22,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:38:22,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-14 15:38:22,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-14 15:38:22,732 INFO L175 Difference]: Start difference. First operand has 157 places, 137 transitions, 1323 flow. Second operand 9 states and 114 transitions. [2024-06-14 15:38:22,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 161 transitions, 1967 flow [2024-06-14 15:38:22,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 161 transitions, 1794 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-14 15:38:22,793 INFO L231 Difference]: Finished difference. Result has 160 places, 141 transitions, 1362 flow [2024-06-14 15:38:22,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1362, PETRI_PLACES=160, PETRI_TRANSITIONS=141} [2024-06-14 15:38:22,794 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-14 15:38:22,794 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 141 transitions, 1362 flow [2024-06-14 15:38:22,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:38:22,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:38:22,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:38:22,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 15:38:22,794 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:38:22,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:38:22,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1830602843, now seen corresponding path program 8 times [2024-06-14 15:38:22,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:38:22,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961512514] [2024-06-14 15:38:22,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:38:22,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:38:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:38:27,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:38:27,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:38:27,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961512514] [2024-06-14 15:38:27,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961512514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:38:27,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:38:27,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:38:27,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610251522] [2024-06-14 15:38:27,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:38:27,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:38:27,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:38:27,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:38:27,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:38:27,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:38:27,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 141 transitions, 1362 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:38:27,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:38:27,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:38:27,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:38:28,128 INFO L124 PetriNetUnfolderBase]: 372/664 cut-off events. [2024-06-14 15:38:28,128 INFO L125 PetriNetUnfolderBase]: For 38178/38178 co-relation queries the response was YES. [2024-06-14 15:38:28,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4453 conditions, 664 events. 372/664 cut-off events. For 38178/38178 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2892 event pairs, 47 based on Foata normal form. 2/666 useless extension candidates. Maximal degree in co-relation 4376. Up to 550 conditions per place. [2024-06-14 15:38:28,133 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 116 selfloop transitions, 39 changer transitions 0/157 dead transitions. [2024-06-14 15:38:28,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 157 transitions, 1735 flow [2024-06-14 15:38:28,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:38:28,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:38:28,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-14 15:38:28,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 15:38:28,134 INFO L175 Difference]: Start difference. First operand has 160 places, 141 transitions, 1362 flow. Second operand 9 states and 99 transitions. [2024-06-14 15:38:28,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 157 transitions, 1735 flow [2024-06-14 15:38:28,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 157 transitions, 1632 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-14 15:38:28,204 INFO L231 Difference]: Finished difference. Result has 164 places, 144 transitions, 1376 flow [2024-06-14 15:38:28,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1260, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1376, PETRI_PLACES=164, PETRI_TRANSITIONS=144} [2024-06-14 15:38:28,204 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 133 predicate places. [2024-06-14 15:38:28,204 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 144 transitions, 1376 flow [2024-06-14 15:38:28,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:38:28,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:38:28,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:38:28,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 15:38:28,205 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:38:28,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:38:28,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1830597108, now seen corresponding path program 5 times [2024-06-14 15:38:28,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:38:28,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021773123] [2024-06-14 15:38:28,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:38:28,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:38:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:38:32,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:38:32,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:38:32,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021773123] [2024-06-14 15:38:32,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021773123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:38:32,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:38:32,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:38:32,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806123717] [2024-06-14 15:38:32,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:38:32,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:38:32,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:38:32,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:38:32,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:38:32,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:38:32,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 144 transitions, 1376 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:38:32,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:38:32,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:38:32,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:38:33,176 INFO L124 PetriNetUnfolderBase]: 375/669 cut-off events. [2024-06-14 15:38:33,176 INFO L125 PetriNetUnfolderBase]: For 38232/38232 co-relation queries the response was YES. [2024-06-14 15:38:33,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4447 conditions, 669 events. 375/669 cut-off events. For 38232/38232 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2920 event pairs, 46 based on Foata normal form. 1/670 useless extension candidates. Maximal degree in co-relation 4369. Up to 558 conditions per place. [2024-06-14 15:38:33,180 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 116 selfloop transitions, 40 changer transitions 0/158 dead transitions. [2024-06-14 15:38:33,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 158 transitions, 1745 flow [2024-06-14 15:38:33,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:38:33,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:38:33,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-14 15:38:33,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-14 15:38:33,181 INFO L175 Difference]: Start difference. First operand has 164 places, 144 transitions, 1376 flow. Second operand 9 states and 101 transitions. [2024-06-14 15:38:33,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 158 transitions, 1745 flow [2024-06-14 15:38:33,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 158 transitions, 1690 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-14 15:38:33,244 INFO L231 Difference]: Finished difference. Result has 168 places, 146 transitions, 1439 flow [2024-06-14 15:38:33,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1321, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1439, PETRI_PLACES=168, PETRI_TRANSITIONS=146} [2024-06-14 15:38:33,245 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 137 predicate places. [2024-06-14 15:38:33,245 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 146 transitions, 1439 flow [2024-06-14 15:38:33,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:38:33,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:38:33,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:38:33,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 15:38:33,245 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:38:33,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:38:33,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1830395298, now seen corresponding path program 6 times [2024-06-14 15:38:33,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:38:33,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347282748] [2024-06-14 15:38:33,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:38:33,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:38:33,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:38:37,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:38:37,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:38:37,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347282748] [2024-06-14 15:38:37,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347282748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:38:37,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:38:37,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:38:37,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111838310] [2024-06-14 15:38:37,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:38:37,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:38:37,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:38:37,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:38:37,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:38:37,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:38:37,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 146 transitions, 1439 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:38:37,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:38:37,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:38:37,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:38:37,986 INFO L124 PetriNetUnfolderBase]: 378/674 cut-off events. [2024-06-14 15:38:37,986 INFO L125 PetriNetUnfolderBase]: For 39743/39743 co-relation queries the response was YES. [2024-06-14 15:38:37,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4534 conditions, 674 events. 378/674 cut-off events. For 39743/39743 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2942 event pairs, 48 based on Foata normal form. 1/675 useless extension candidates. Maximal degree in co-relation 4455. Up to 563 conditions per place. [2024-06-14 15:38:37,991 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 117 selfloop transitions, 41 changer transitions 0/160 dead transitions. [2024-06-14 15:38:37,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 160 transitions, 1816 flow [2024-06-14 15:38:37,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:38:37,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:38:37,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-14 15:38:37,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-14 15:38:37,993 INFO L175 Difference]: Start difference. First operand has 168 places, 146 transitions, 1439 flow. Second operand 9 states and 100 transitions. [2024-06-14 15:38:37,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 160 transitions, 1816 flow [2024-06-14 15:38:38,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 160 transitions, 1721 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-14 15:38:38,083 INFO L231 Difference]: Finished difference. Result has 170 places, 148 transitions, 1468 flow [2024-06-14 15:38:38,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1468, PETRI_PLACES=170, PETRI_TRANSITIONS=148} [2024-06-14 15:38:38,083 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-14 15:38:38,083 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 148 transitions, 1468 flow [2024-06-14 15:38:38,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:38:38,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:38:38,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:38:38,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 15:38:38,084 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:38:38,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:38:38,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1830395081, now seen corresponding path program 3 times [2024-06-14 15:38:38,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:38:38,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679286093] [2024-06-14 15:38:38,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:38:38,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:38:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:38:42,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:38:42,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:38:42,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679286093] [2024-06-14 15:38:42,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679286093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:38:42,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:38:42,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:38:42,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853602979] [2024-06-14 15:38:42,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:38:42,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:38:42,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:38:42,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:38:42,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:38:42,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:38:42,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 148 transitions, 1468 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:38:42,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:38:42,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:38:42,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:38:43,428 INFO L124 PetriNetUnfolderBase]: 384/684 cut-off events. [2024-06-14 15:38:43,429 INFO L125 PetriNetUnfolderBase]: For 42476/42476 co-relation queries the response was YES. [2024-06-14 15:38:43,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4630 conditions, 684 events. 384/684 cut-off events. For 42476/42476 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3000 event pairs, 42 based on Foata normal form. 2/686 useless extension candidates. Maximal degree in co-relation 4550. Up to 331 conditions per place. [2024-06-14 15:38:43,433 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 98 selfloop transitions, 70 changer transitions 0/170 dead transitions. [2024-06-14 15:38:43,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 170 transitions, 2117 flow [2024-06-14 15:38:43,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:38:43,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:38:43,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-14 15:38:43,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-14 15:38:43,434 INFO L175 Difference]: Start difference. First operand has 170 places, 148 transitions, 1468 flow. Second operand 9 states and 114 transitions. [2024-06-14 15:38:43,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 170 transitions, 2117 flow [2024-06-14 15:38:43,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 170 transitions, 2016 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-14 15:38:43,512 INFO L231 Difference]: Finished difference. Result has 172 places, 150 transitions, 1547 flow [2024-06-14 15:38:43,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1547, PETRI_PLACES=172, PETRI_TRANSITIONS=150} [2024-06-14 15:38:43,512 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-14 15:38:43,512 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 150 transitions, 1547 flow [2024-06-14 15:38:43,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:38:43,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:38:43,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:38:43,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 15:38:43,513 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:38:43,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:38:43,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1830387641, now seen corresponding path program 4 times [2024-06-14 15:38:43,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:38:43,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784624494] [2024-06-14 15:38:43,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:38:43,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:38:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:38:47,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:38:47,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:38:47,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784624494] [2024-06-14 15:38:47,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784624494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:38:47,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:38:47,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:38:47,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129898144] [2024-06-14 15:38:47,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:38:47,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:38:47,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:38:47,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:38:47,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:38:47,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:38:47,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 150 transitions, 1547 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:38:47,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:38:47,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:38:47,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:38:48,341 INFO L124 PetriNetUnfolderBase]: 380/678 cut-off events. [2024-06-14 15:38:48,341 INFO L125 PetriNetUnfolderBase]: For 40840/40840 co-relation queries the response was YES. [2024-06-14 15:38:48,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4595 conditions, 678 events. 380/678 cut-off events. For 40840/40840 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2949 event pairs, 40 based on Foata normal form. 2/680 useless extension candidates. Maximal degree in co-relation 4514. Up to 330 conditions per place. [2024-06-14 15:38:48,346 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 92 selfloop transitions, 74 changer transitions 0/168 dead transitions. [2024-06-14 15:38:48,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 168 transitions, 2049 flow [2024-06-14 15:38:48,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:38:48,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:38:48,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-14 15:38:48,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-14 15:38:48,347 INFO L175 Difference]: Start difference. First operand has 172 places, 150 transitions, 1547 flow. Second operand 9 states and 112 transitions. [2024-06-14 15:38:48,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 168 transitions, 2049 flow [2024-06-14 15:38:48,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 168 transitions, 1861 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-14 15:38:48,424 INFO L231 Difference]: Finished difference. Result has 174 places, 150 transitions, 1513 flow [2024-06-14 15:38:48,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1359, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1513, PETRI_PLACES=174, PETRI_TRANSITIONS=150} [2024-06-14 15:38:48,424 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 143 predicate places. [2024-06-14 15:38:48,424 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 150 transitions, 1513 flow [2024-06-14 15:38:48,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:38:48,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:38:48,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:38:48,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 15:38:48,424 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:38:48,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:38:48,425 INFO L85 PathProgramCache]: Analyzing trace with hash 909942583, now seen corresponding path program 5 times [2024-06-14 15:38:48,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:38:48,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883081987] [2024-06-14 15:38:48,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:38:48,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:38:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:38:52,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:38:52,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:38:52,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883081987] [2024-06-14 15:38:52,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883081987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:38:52,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:38:52,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:38:52,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688014435] [2024-06-14 15:38:52,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:38:52,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:38:52,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:38:52,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:38:52,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:38:52,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:38:52,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 150 transitions, 1513 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:38:52,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:38:52,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:38:52,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:38:53,226 INFO L124 PetriNetUnfolderBase]: 386/688 cut-off events. [2024-06-14 15:38:53,227 INFO L125 PetriNetUnfolderBase]: For 43026/43026 co-relation queries the response was YES. [2024-06-14 15:38:53,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4641 conditions, 688 events. 386/688 cut-off events. For 43026/43026 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3013 event pairs, 43 based on Foata normal form. 2/690 useless extension candidates. Maximal degree in co-relation 4559. Up to 648 conditions per place. [2024-06-14 15:38:53,231 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 147 selfloop transitions, 15 changer transitions 0/164 dead transitions. [2024-06-14 15:38:53,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 164 transitions, 1904 flow [2024-06-14 15:38:53,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:38:53,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:38:53,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-14 15:38:53,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3194444444444444 [2024-06-14 15:38:53,232 INFO L175 Difference]: Start difference. First operand has 174 places, 150 transitions, 1513 flow. Second operand 9 states and 92 transitions. [2024-06-14 15:38:53,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 164 transitions, 1904 flow [2024-06-14 15:38:53,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 164 transitions, 1748 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-14 15:38:53,311 INFO L231 Difference]: Finished difference. Result has 175 places, 152 transitions, 1437 flow [2024-06-14 15:38:53,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1359, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1437, PETRI_PLACES=175, PETRI_TRANSITIONS=152} [2024-06-14 15:38:53,311 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 144 predicate places. [2024-06-14 15:38:53,311 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 152 transitions, 1437 flow [2024-06-14 15:38:53,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:38:53,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:38:53,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:38:53,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 15:38:53,312 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:38:53,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:38:53,312 INFO L85 PathProgramCache]: Analyzing trace with hash 909675673, now seen corresponding path program 6 times [2024-06-14 15:38:53,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:38:53,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880151950] [2024-06-14 15:38:53,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:38:53,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:38:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:38:57,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:38:57,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:38:57,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880151950] [2024-06-14 15:38:57,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880151950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:38:57,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:38:57,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:38:57,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443251850] [2024-06-14 15:38:57,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:38:57,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:38:57,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:38:57,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:38:57,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:38:58,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:38:58,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 152 transitions, 1437 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:38:58,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:38:58,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:38:58,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:38:58,416 INFO L124 PetriNetUnfolderBase]: 402/714 cut-off events. [2024-06-14 15:38:58,416 INFO L125 PetriNetUnfolderBase]: For 48117/48117 co-relation queries the response was YES. [2024-06-14 15:38:58,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4837 conditions, 714 events. 402/714 cut-off events. For 48117/48117 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3149 event pairs, 43 based on Foata normal form. 2/716 useless extension candidates. Maximal degree in co-relation 4754. Up to 645 conditions per place. [2024-06-14 15:38:58,421 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 145 selfloop transitions, 23 changer transitions 0/170 dead transitions. [2024-06-14 15:38:58,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 170 transitions, 2001 flow [2024-06-14 15:38:58,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:38:58,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:38:58,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 15:38:58,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-14 15:38:58,421 INFO L175 Difference]: Start difference. First operand has 175 places, 152 transitions, 1437 flow. Second operand 9 states and 97 transitions. [2024-06-14 15:38:58,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 170 transitions, 2001 flow [2024-06-14 15:38:58,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 170 transitions, 1942 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-14 15:38:58,499 INFO L231 Difference]: Finished difference. Result has 177 places, 156 transitions, 1519 flow [2024-06-14 15:38:58,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1378, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1519, PETRI_PLACES=177, PETRI_TRANSITIONS=156} [2024-06-14 15:38:58,499 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-14 15:38:58,499 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 156 transitions, 1519 flow [2024-06-14 15:38:58,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:38:58,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:38:58,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:38:58,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 15:38:58,500 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:38:58,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:38:58,500 INFO L85 PathProgramCache]: Analyzing trace with hash 909675456, now seen corresponding path program 7 times [2024-06-14 15:38:58,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:38:58,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582167289] [2024-06-14 15:38:58,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:38:58,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:38:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:39:02,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:39:02,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:39:02,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582167289] [2024-06-14 15:39:02,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582167289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:39:02,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:39:02,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:39:02,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888790469] [2024-06-14 15:39:02,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:39:02,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:39:02,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:39:02,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:39:02,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:39:02,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:39:02,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 156 transitions, 1519 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:39:02,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:39:02,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:39:02,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:39:02,858 INFO L124 PetriNetUnfolderBase]: 405/719 cut-off events. [2024-06-14 15:39:02,858 INFO L125 PetriNetUnfolderBase]: For 48208/48208 co-relation queries the response was YES. [2024-06-14 15:39:02,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4906 conditions, 719 events. 405/719 cut-off events. For 48208/48208 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3184 event pairs, 50 based on Foata normal form. 1/720 useless extension candidates. Maximal degree in co-relation 4822. Up to 692 conditions per place. [2024-06-14 15:39:02,864 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 150 selfloop transitions, 15 changer transitions 0/167 dead transitions. [2024-06-14 15:39:02,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 167 transitions, 1906 flow [2024-06-14 15:39:02,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:39:02,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:39:02,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-14 15:39:02,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3090277777777778 [2024-06-14 15:39:02,872 INFO L175 Difference]: Start difference. First operand has 177 places, 156 transitions, 1519 flow. Second operand 9 states and 89 transitions. [2024-06-14 15:39:02,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 167 transitions, 1906 flow [2024-06-14 15:39:02,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 167 transitions, 1842 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-14 15:39:02,960 INFO L231 Difference]: Finished difference. Result has 181 places, 158 transitions, 1531 flow [2024-06-14 15:39:02,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1531, PETRI_PLACES=181, PETRI_TRANSITIONS=158} [2024-06-14 15:39:02,961 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-14 15:39:02,961 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 158 transitions, 1531 flow [2024-06-14 15:39:02,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:39:02,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:39:02,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:39:02,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 15:39:02,962 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:39:02,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:39:02,962 INFO L85 PathProgramCache]: Analyzing trace with hash 909683113, now seen corresponding path program 7 times [2024-06-14 15:39:02,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:39:02,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834105213] [2024-06-14 15:39:02,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:39:02,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:39:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:39:07,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:39:07,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:39:07,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834105213] [2024-06-14 15:39:07,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834105213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:39:07,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:39:07,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:39:07,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535226205] [2024-06-14 15:39:07,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:39:07,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:39:07,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:39:07,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:39:07,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:39:07,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:39:07,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 158 transitions, 1531 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:39:07,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:39:07,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:39:07,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:39:07,885 INFO L124 PetriNetUnfolderBase]: 401/713 cut-off events. [2024-06-14 15:39:07,886 INFO L125 PetriNetUnfolderBase]: For 47589/47589 co-relation queries the response was YES. [2024-06-14 15:39:07,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4726 conditions, 713 events. 401/713 cut-off events. For 47589/47589 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3153 event pairs, 43 based on Foata normal form. 2/715 useless extension candidates. Maximal degree in co-relation 4640. Up to 647 conditions per place. [2024-06-14 15:39:07,891 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 147 selfloop transitions, 22 changer transitions 0/171 dead transitions. [2024-06-14 15:39:07,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 171 transitions, 1897 flow [2024-06-14 15:39:07,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:39:07,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:39:07,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 15:39:07,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-14 15:39:07,892 INFO L175 Difference]: Start difference. First operand has 181 places, 158 transitions, 1531 flow. Second operand 9 states and 97 transitions. [2024-06-14 15:39:07,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 171 transitions, 1897 flow [2024-06-14 15:39:07,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 171 transitions, 1822 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-14 15:39:07,973 INFO L231 Difference]: Finished difference. Result has 183 places, 158 transitions, 1505 flow [2024-06-14 15:39:07,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1456, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1505, PETRI_PLACES=183, PETRI_TRANSITIONS=158} [2024-06-14 15:39:07,973 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-14 15:39:07,973 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 158 transitions, 1505 flow [2024-06-14 15:39:07,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:39:07,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:39:07,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:39:07,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 15:39:07,974 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:39:07,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:39:07,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1923055591, now seen corresponding path program 8 times [2024-06-14 15:39:07,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:39:07,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579792985] [2024-06-14 15:39:07,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:39:07,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:39:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:39:12,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:39:12,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:39:12,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579792985] [2024-06-14 15:39:12,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579792985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:39:12,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:39:12,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:39:12,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915569651] [2024-06-14 15:39:12,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:39:12,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:39:12,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:39:12,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:39:12,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:39:12,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:39:12,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 158 transitions, 1505 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:39:12,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:39:12,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:39:12,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:39:12,618 INFO L124 PetriNetUnfolderBase]: 407/723 cut-off events. [2024-06-14 15:39:12,618 INFO L125 PetriNetUnfolderBase]: For 49343/49343 co-relation queries the response was YES. [2024-06-14 15:39:12,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4812 conditions, 723 events. 407/723 cut-off events. For 49343/49343 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3209 event pairs, 47 based on Foata normal form. 2/725 useless extension candidates. Maximal degree in co-relation 4725. Up to 659 conditions per place. [2024-06-14 15:39:12,623 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 151 selfloop transitions, 23 changer transitions 0/176 dead transitions. [2024-06-14 15:39:12,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 176 transitions, 2095 flow [2024-06-14 15:39:12,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:39:12,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:39:12,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-14 15:39:12,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-14 15:39:12,624 INFO L175 Difference]: Start difference. First operand has 183 places, 158 transitions, 1505 flow. Second operand 9 states and 100 transitions. [2024-06-14 15:39:12,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 176 transitions, 2095 flow [2024-06-14 15:39:12,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 176 transitions, 2039 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-14 15:39:12,705 INFO L231 Difference]: Finished difference. Result has 184 places, 162 transitions, 1598 flow [2024-06-14 15:39:12,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1449, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1598, PETRI_PLACES=184, PETRI_TRANSITIONS=162} [2024-06-14 15:39:12,706 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2024-06-14 15:39:12,706 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 162 transitions, 1598 flow [2024-06-14 15:39:12,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:39:12,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:39:12,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:39:12,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 15:39:12,706 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:39:12,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:39:12,706 INFO L85 PathProgramCache]: Analyzing trace with hash 652973136, now seen corresponding path program 8 times [2024-06-14 15:39:12,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:39:12,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825946293] [2024-06-14 15:39:12,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:39:12,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:39:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:39:17,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:39:17,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:39:17,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825946293] [2024-06-14 15:39:17,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825946293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:39:17,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:39:17,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:39:17,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136944507] [2024-06-14 15:39:17,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:39:17,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:39:17,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:39:17,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:39:17,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:39:17,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:39:17,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 162 transitions, 1598 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:39:17,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:39:17,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:39:17,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:39:17,813 INFO L124 PetriNetUnfolderBase]: 410/728 cut-off events. [2024-06-14 15:39:17,813 INFO L125 PetriNetUnfolderBase]: For 49384/49384 co-relation queries the response was YES. [2024-06-14 15:39:17,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4886 conditions, 728 events. 410/728 cut-off events. For 49384/49384 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3244 event pairs, 52 based on Foata normal form. 1/729 useless extension candidates. Maximal degree in co-relation 4798. Up to 692 conditions per place. [2024-06-14 15:39:17,818 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 151 selfloop transitions, 20 changer transitions 0/173 dead transitions. [2024-06-14 15:39:17,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 173 transitions, 2001 flow [2024-06-14 15:39:17,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:39:17,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:39:17,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-14 15:39:17,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3194444444444444 [2024-06-14 15:39:17,821 INFO L175 Difference]: Start difference. First operand has 184 places, 162 transitions, 1598 flow. Second operand 9 states and 92 transitions. [2024-06-14 15:39:17,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 173 transitions, 2001 flow [2024-06-14 15:39:17,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 173 transitions, 1930 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-14 15:39:17,921 INFO L231 Difference]: Finished difference. Result has 188 places, 164 transitions, 1617 flow [2024-06-14 15:39:17,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1527, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1617, PETRI_PLACES=188, PETRI_TRANSITIONS=164} [2024-06-14 15:39:17,922 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 157 predicate places. [2024-06-14 15:39:17,922 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 164 transitions, 1617 flow [2024-06-14 15:39:17,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:39:17,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:39:17,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:39:17,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 15:39:17,922 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:39:17,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:39:17,923 INFO L85 PathProgramCache]: Analyzing trace with hash 653182603, now seen corresponding path program 9 times [2024-06-14 15:39:17,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:39:17,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136234842] [2024-06-14 15:39:17,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:39:17,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:39:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:39:22,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:39:22,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:39:22,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136234842] [2024-06-14 15:39:22,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136234842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:39:22,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:39:22,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:39:22,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883369014] [2024-06-14 15:39:22,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:39:22,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:39:22,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:39:22,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:39:22,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:39:22,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:39:22,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 164 transitions, 1617 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:39:22,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:39:22,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:39:22,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:39:22,876 INFO L124 PetriNetUnfolderBase]: 416/738 cut-off events. [2024-06-14 15:39:22,876 INFO L125 PetriNetUnfolderBase]: For 52484/52484 co-relation queries the response was YES. [2024-06-14 15:39:22,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4941 conditions, 738 events. 416/738 cut-off events. For 52484/52484 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3301 event pairs, 48 based on Foata normal form. 2/740 useless extension candidates. Maximal degree in co-relation 4851. Up to 670 conditions per place. [2024-06-14 15:39:22,882 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 151 selfloop transitions, 26 changer transitions 0/179 dead transitions. [2024-06-14 15:39:22,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 179 transitions, 2164 flow [2024-06-14 15:39:22,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:39:22,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:39:22,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 15:39:22,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-14 15:39:22,883 INFO L175 Difference]: Start difference. First operand has 188 places, 164 transitions, 1617 flow. Second operand 9 states and 98 transitions. [2024-06-14 15:39:22,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 179 transitions, 2164 flow [2024-06-14 15:39:22,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 179 transitions, 2097 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-14 15:39:22,971 INFO L231 Difference]: Finished difference. Result has 190 places, 166 transitions, 1650 flow [2024-06-14 15:39:22,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1550, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1650, PETRI_PLACES=190, PETRI_TRANSITIONS=166} [2024-06-14 15:39:22,972 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-14 15:39:22,972 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 166 transitions, 1650 flow [2024-06-14 15:39:22,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:39:22,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:39:22,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:39:22,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 15:39:22,972 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:39:22,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:39:22,973 INFO L85 PathProgramCache]: Analyzing trace with hash 653175163, now seen corresponding path program 10 times [2024-06-14 15:39:22,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:39:22,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408170174] [2024-06-14 15:39:22,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:39:22,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:39:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:39:27,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:39:27,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:39:27,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408170174] [2024-06-14 15:39:27,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408170174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:39:27,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:39:27,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:39:27,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218341832] [2024-06-14 15:39:27,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:39:27,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:39:27,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:39:27,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:39:27,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:39:27,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:39:27,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 166 transitions, 1650 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:39:27,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:39:27,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:39:27,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:39:28,299 INFO L124 PetriNetUnfolderBase]: 412/732 cut-off events. [2024-06-14 15:39:28,299 INFO L125 PetriNetUnfolderBase]: For 50283/50283 co-relation queries the response was YES. [2024-06-14 15:39:28,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4801 conditions, 732 events. 412/732 cut-off events. For 50283/50283 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3284 event pairs, 47 based on Foata normal form. 2/734 useless extension candidates. Maximal degree in co-relation 4710. Up to 667 conditions per place. [2024-06-14 15:39:28,304 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 152 selfloop transitions, 25 changer transitions 0/179 dead transitions. [2024-06-14 15:39:28,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 179 transitions, 2032 flow [2024-06-14 15:39:28,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:39:28,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:39:28,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-14 15:39:28,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 15:39:28,305 INFO L175 Difference]: Start difference. First operand has 190 places, 166 transitions, 1650 flow. Second operand 9 states and 99 transitions. [2024-06-14 15:39:28,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 179 transitions, 2032 flow [2024-06-14 15:39:28,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 179 transitions, 1917 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-14 15:39:28,393 INFO L231 Difference]: Finished difference. Result has 192 places, 166 transitions, 1590 flow [2024-06-14 15:39:28,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1535, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1590, PETRI_PLACES=192, PETRI_TRANSITIONS=166} [2024-06-14 15:39:28,394 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-14 15:39:28,394 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 166 transitions, 1590 flow [2024-06-14 15:39:28,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:39:28,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:39:28,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:39:28,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 15:39:28,394 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:39:28,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:39:28,394 INFO L85 PathProgramCache]: Analyzing trace with hash 652967401, now seen corresponding path program 9 times [2024-06-14 15:39:28,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:39:28,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909460699] [2024-06-14 15:39:28,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:39:28,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:39:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:39:33,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:39:33,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:39:33,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909460699] [2024-06-14 15:39:33,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909460699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:39:33,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:39:33,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:39:33,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829017056] [2024-06-14 15:39:33,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:39:33,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:39:33,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:39:33,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:39:33,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:39:33,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:39:33,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 166 transitions, 1590 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:39:33,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:39:33,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:39:33,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:39:33,748 INFO L124 PetriNetUnfolderBase]: 409/727 cut-off events. [2024-06-14 15:39:33,749 INFO L125 PetriNetUnfolderBase]: For 47356/47356 co-relation queries the response was YES. [2024-06-14 15:39:33,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4571 conditions, 727 events. 409/727 cut-off events. For 47356/47356 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3253 event pairs, 49 based on Foata normal form. 2/729 useless extension candidates. Maximal degree in co-relation 4480. Up to 697 conditions per place. [2024-06-14 15:39:33,754 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 160 selfloop transitions, 14 changer transitions 0/176 dead transitions. [2024-06-14 15:39:33,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 176 transitions, 1960 flow [2024-06-14 15:39:33,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:39:33,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:39:33,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-14 15:39:33,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3090277777777778 [2024-06-14 15:39:33,756 INFO L175 Difference]: Start difference. First operand has 192 places, 166 transitions, 1590 flow. Second operand 9 states and 89 transitions. [2024-06-14 15:39:33,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 176 transitions, 1960 flow [2024-06-14 15:39:33,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 176 transitions, 1894 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-14 15:39:33,853 INFO L231 Difference]: Finished difference. Result has 192 places, 166 transitions, 1556 flow [2024-06-14 15:39:33,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1524, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1556, PETRI_PLACES=192, PETRI_TRANSITIONS=166} [2024-06-14 15:39:33,853 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-14 15:39:33,853 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 166 transitions, 1556 flow [2024-06-14 15:39:33,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:39:33,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:39:33,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:39:33,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 15:39:33,854 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:39:33,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:39:33,854 INFO L85 PathProgramCache]: Analyzing trace with hash 653174946, now seen corresponding path program 9 times [2024-06-14 15:39:33,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:39:33,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772408869] [2024-06-14 15:39:33,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:39:33,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:39:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:39:38,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:39:38,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:39:38,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772408869] [2024-06-14 15:39:38,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772408869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:39:38,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:39:38,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:39:38,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935420755] [2024-06-14 15:39:38,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:39:38,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:39:38,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:39:38,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:39:38,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:39:38,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:39:38,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 166 transitions, 1556 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:39:38,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:39:38,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:39:38,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:39:39,088 INFO L124 PetriNetUnfolderBase]: 407/724 cut-off events. [2024-06-14 15:39:39,088 INFO L125 PetriNetUnfolderBase]: For 44633/44633 co-relation queries the response was YES. [2024-06-14 15:39:39,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4465 conditions, 724 events. 407/724 cut-off events. For 44633/44633 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3233 event pairs, 50 based on Foata normal form. 1/725 useless extension candidates. Maximal degree in co-relation 4373. Up to 688 conditions per place. [2024-06-14 15:39:39,093 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 153 selfloop transitions, 20 changer transitions 0/175 dead transitions. [2024-06-14 15:39:39,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 175 transitions, 1922 flow [2024-06-14 15:39:39,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:39:39,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:39:39,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-14 15:39:39,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3194444444444444 [2024-06-14 15:39:39,094 INFO L175 Difference]: Start difference. First operand has 192 places, 166 transitions, 1556 flow. Second operand 9 states and 92 transitions. [2024-06-14 15:39:39,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 175 transitions, 1922 flow [2024-06-14 15:39:39,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 175 transitions, 1783 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-14 15:39:39,199 INFO L231 Difference]: Finished difference. Result has 189 places, 166 transitions, 1462 flow [2024-06-14 15:39:39,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1417, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1462, PETRI_PLACES=189, PETRI_TRANSITIONS=166} [2024-06-14 15:39:39,200 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-14 15:39:39,200 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 166 transitions, 1462 flow [2024-06-14 15:39:39,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:39:39,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:39:39,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:39:39,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 15:39:39,200 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:39:39,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:39:39,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1338834570, now seen corresponding path program 1 times [2024-06-14 15:39:39,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:39:39,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761232641] [2024-06-14 15:39:39,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:39:39,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:39:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:39:43,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:39:43,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:39:43,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761232641] [2024-06-14 15:39:43,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761232641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:39:43,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:39:43,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:39:43,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652130356] [2024-06-14 15:39:43,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:39:43,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:39:43,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:39:43,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:39:43,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:39:43,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:39:43,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 166 transitions, 1462 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:39:43,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:39:43,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:39:43,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:39:43,490 INFO L124 PetriNetUnfolderBase]: 411/732 cut-off events. [2024-06-14 15:39:43,490 INFO L125 PetriNetUnfolderBase]: For 47725/47725 co-relation queries the response was YES. [2024-06-14 15:39:43,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4408 conditions, 732 events. 411/732 cut-off events. For 47725/47725 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3290 event pairs, 33 based on Foata normal form. 2/734 useless extension candidates. Maximal degree in co-relation 4316. Up to 372 conditions per place. [2024-06-14 15:39:43,495 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 129 selfloop transitions, 53 changer transitions 0/184 dead transitions. [2024-06-14 15:39:43,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 184 transitions, 2000 flow [2024-06-14 15:39:43,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:39:43,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:39:43,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-14 15:39:43,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 15:39:43,496 INFO L175 Difference]: Start difference. First operand has 189 places, 166 transitions, 1462 flow. Second operand 9 states and 99 transitions. [2024-06-14 15:39:43,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 184 transitions, 2000 flow [2024-06-14 15:39:43,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 184 transitions, 1885 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-14 15:39:43,591 INFO L231 Difference]: Finished difference. Result has 189 places, 167 transitions, 1463 flow [2024-06-14 15:39:43,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1347, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1463, PETRI_PLACES=189, PETRI_TRANSITIONS=167} [2024-06-14 15:39:43,591 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-14 15:39:43,591 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 167 transitions, 1463 flow [2024-06-14 15:39:43,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:39:43,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:39:43,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:39:43,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 15:39:43,592 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:39:43,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:39:43,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1396927020, now seen corresponding path program 2 times [2024-06-14 15:39:43,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:39:43,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089444122] [2024-06-14 15:39:43,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:39:43,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:39:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:39:47,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:39:47,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:39:47,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089444122] [2024-06-14 15:39:47,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089444122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:39:47,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:39:47,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:39:47,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372289417] [2024-06-14 15:39:47,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:39:47,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:39:47,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:39:47,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:39:47,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:39:47,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:39:47,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 167 transitions, 1463 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:39:47,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:39:47,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:39:47,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:39:47,955 INFO L124 PetriNetUnfolderBase]: 422/753 cut-off events. [2024-06-14 15:39:47,955 INFO L125 PetriNetUnfolderBase]: For 53416/53416 co-relation queries the response was YES. [2024-06-14 15:39:47,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4623 conditions, 753 events. 422/753 cut-off events. For 53416/53416 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3434 event pairs, 52 based on Foata normal form. 2/755 useless extension candidates. Maximal degree in co-relation 4531. Up to 505 conditions per place. [2024-06-14 15:39:47,960 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 124 selfloop transitions, 59 changer transitions 0/185 dead transitions. [2024-06-14 15:39:47,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 185 transitions, 2013 flow [2024-06-14 15:39:47,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:39:47,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:39:47,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-14 15:39:47,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3680555555555556 [2024-06-14 15:39:47,961 INFO L175 Difference]: Start difference. First operand has 189 places, 167 transitions, 1463 flow. Second operand 9 states and 106 transitions. [2024-06-14 15:39:47,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 185 transitions, 2013 flow [2024-06-14 15:39:48,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 185 transitions, 1919 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 15:39:48,069 INFO L231 Difference]: Finished difference. Result has 192 places, 169 transitions, 1509 flow [2024-06-14 15:39:48,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1509, PETRI_PLACES=192, PETRI_TRANSITIONS=169} [2024-06-14 15:39:48,070 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-14 15:39:48,070 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 169 transitions, 1509 flow [2024-06-14 15:39:48,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:39:48,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:39:48,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:39:48,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 15:39:48,070 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:39:48,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:39:48,070 INFO L85 PathProgramCache]: Analyzing trace with hash -321301366, now seen corresponding path program 3 times [2024-06-14 15:39:48,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:39:48,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138390591] [2024-06-14 15:39:48,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:39:48,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:39:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:39:51,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:39:51,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:39:51,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138390591] [2024-06-14 15:39:51,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138390591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:39:51,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:39:51,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:39:51,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605625435] [2024-06-14 15:39:51,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:39:51,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:39:51,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:39:51,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:39:51,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:39:52,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:39:52,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 169 transitions, 1509 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:39:52,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:39:52,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:39:52,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:39:52,372 INFO L124 PetriNetUnfolderBase]: 433/774 cut-off events. [2024-06-14 15:39:52,373 INFO L125 PetriNetUnfolderBase]: For 59748/59748 co-relation queries the response was YES. [2024-06-14 15:39:52,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4879 conditions, 774 events. 433/774 cut-off events. For 59748/59748 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3588 event pairs, 55 based on Foata normal form. 2/776 useless extension candidates. Maximal degree in co-relation 4786. Up to 568 conditions per place. [2024-06-14 15:39:52,378 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 122 selfloop transitions, 62 changer transitions 0/186 dead transitions. [2024-06-14 15:39:52,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 186 transitions, 2059 flow [2024-06-14 15:39:52,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:39:52,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:39:52,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-14 15:39:52,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 15:39:52,379 INFO L175 Difference]: Start difference. First operand has 192 places, 169 transitions, 1509 flow. Second operand 9 states and 108 transitions. [2024-06-14 15:39:52,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 186 transitions, 2059 flow [2024-06-14 15:39:52,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 186 transitions, 1987 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-14 15:39:52,508 INFO L231 Difference]: Finished difference. Result has 196 places, 171 transitions, 1581 flow [2024-06-14 15:39:52,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1581, PETRI_PLACES=196, PETRI_TRANSITIONS=171} [2024-06-14 15:39:52,508 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-14 15:39:52,508 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 171 transitions, 1581 flow [2024-06-14 15:39:52,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:39:52,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:39:52,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:39:52,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 15:39:52,509 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:39:52,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:39:52,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1794241590, now seen corresponding path program 4 times [2024-06-14 15:39:52,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:39:52,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388356671] [2024-06-14 15:39:52,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:39:52,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:39:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:39:56,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:39:56,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:39:56,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388356671] [2024-06-14 15:39:56,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388356671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:39:56,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:39:56,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:39:56,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725428049] [2024-06-14 15:39:56,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:39:56,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:39:56,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:39:56,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:39:56,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:39:56,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:39:56,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 171 transitions, 1581 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:39:56,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:39:56,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:39:56,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:39:57,020 INFO L124 PetriNetUnfolderBase]: 430/769 cut-off events. [2024-06-14 15:39:57,020 INFO L125 PetriNetUnfolderBase]: For 56948/56948 co-relation queries the response was YES. [2024-06-14 15:39:57,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4862 conditions, 769 events. 430/769 cut-off events. For 56948/56948 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3568 event pairs, 56 based on Foata normal form. 2/771 useless extension candidates. Maximal degree in co-relation 4767. Up to 580 conditions per place. [2024-06-14 15:39:57,025 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 120 selfloop transitions, 62 changer transitions 0/184 dead transitions. [2024-06-14 15:39:57,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 184 transitions, 1975 flow [2024-06-14 15:39:57,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:39:57,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:39:57,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-14 15:39:57,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-14 15:39:57,026 INFO L175 Difference]: Start difference. First operand has 196 places, 171 transitions, 1581 flow. Second operand 9 states and 107 transitions. [2024-06-14 15:39:57,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 184 transitions, 1975 flow [2024-06-14 15:39:57,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 184 transitions, 1896 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-14 15:39:57,145 INFO L231 Difference]: Finished difference. Result has 200 places, 171 transitions, 1630 flow [2024-06-14 15:39:57,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1630, PETRI_PLACES=200, PETRI_TRANSITIONS=171} [2024-06-14 15:39:57,145 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 169 predicate places. [2024-06-14 15:39:57,145 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 171 transitions, 1630 flow [2024-06-14 15:39:57,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:39:57,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:39:57,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:39:57,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 15:39:57,146 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:39:57,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:39:57,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1079566550, now seen corresponding path program 1 times [2024-06-14 15:39:57,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:39:57,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645507980] [2024-06-14 15:39:57,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:39:57,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:39:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:40:02,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:40:02,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:40:02,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645507980] [2024-06-14 15:40:02,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645507980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:40:02,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:40:02,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:40:02,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002260919] [2024-06-14 15:40:02,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:40:02,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:40:02,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:40:02,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:40:02,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:40:02,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:40:02,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 171 transitions, 1630 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:40:02,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:40:02,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:40:02,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:40:03,549 INFO L124 PetriNetUnfolderBase]: 436/779 cut-off events. [2024-06-14 15:40:03,549 INFO L125 PetriNetUnfolderBase]: For 58590/58590 co-relation queries the response was YES. [2024-06-14 15:40:03,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5019 conditions, 779 events. 436/779 cut-off events. For 58590/58590 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3626 event pairs, 50 based on Foata normal form. 2/781 useless extension candidates. Maximal degree in co-relation 4922. Up to 388 conditions per place. [2024-06-14 15:40:03,555 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 123 selfloop transitions, 68 changer transitions 0/193 dead transitions. [2024-06-14 15:40:03,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 193 transitions, 2348 flow [2024-06-14 15:40:03,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:40:03,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:40:03,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 15:40:03,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-14 15:40:03,557 INFO L175 Difference]: Start difference. First operand has 200 places, 171 transitions, 1630 flow. Second operand 10 states and 127 transitions. [2024-06-14 15:40:03,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 193 transitions, 2348 flow [2024-06-14 15:40:03,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 193 transitions, 2222 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-14 15:40:03,687 INFO L231 Difference]: Finished difference. Result has 202 places, 173 transitions, 1661 flow [2024-06-14 15:40:03,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1661, PETRI_PLACES=202, PETRI_TRANSITIONS=173} [2024-06-14 15:40:03,688 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-14 15:40:03,688 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 173 transitions, 1661 flow [2024-06-14 15:40:03,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:40:03,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:40:03,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:40:03,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 15:40:03,689 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:40:03,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:40:03,689 INFO L85 PathProgramCache]: Analyzing trace with hash 897846336, now seen corresponding path program 2 times [2024-06-14 15:40:03,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:40:03,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29585765] [2024-06-14 15:40:03,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:40:03,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:40:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:40:08,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:40:08,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:40:08,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29585765] [2024-06-14 15:40:08,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29585765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:40:08,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:40:08,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:40:08,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890203865] [2024-06-14 15:40:08,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:40:08,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:40:08,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:40:08,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:40:08,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:40:08,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:40:08,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 173 transitions, 1661 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:40:08,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:40:08,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:40:08,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:40:09,103 INFO L124 PetriNetUnfolderBase]: 442/789 cut-off events. [2024-06-14 15:40:09,103 INFO L125 PetriNetUnfolderBase]: For 60430/60430 co-relation queries the response was YES. [2024-06-14 15:40:09,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5126 conditions, 789 events. 442/789 cut-off events. For 60430/60430 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3678 event pairs, 49 based on Foata normal form. 2/791 useless extension candidates. Maximal degree in co-relation 5028. Up to 548 conditions per place. [2024-06-14 15:40:09,109 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 132 selfloop transitions, 61 changer transitions 0/195 dead transitions. [2024-06-14 15:40:09,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 195 transitions, 2121 flow [2024-06-14 15:40:09,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:40:09,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:40:09,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 15:40:09,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-14 15:40:09,109 INFO L175 Difference]: Start difference. First operand has 202 places, 173 transitions, 1661 flow. Second operand 10 states and 118 transitions. [2024-06-14 15:40:09,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 195 transitions, 2121 flow [2024-06-14 15:40:09,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 195 transitions, 1971 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-14 15:40:09,236 INFO L231 Difference]: Finished difference. Result has 206 places, 177 transitions, 1731 flow [2024-06-14 15:40:09,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1519, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1731, PETRI_PLACES=206, PETRI_TRANSITIONS=177} [2024-06-14 15:40:09,236 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-14 15:40:09,236 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 177 transitions, 1731 flow [2024-06-14 15:40:09,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:40:09,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:40:09,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:40:09,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 15:40:09,236 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:40:09,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:40:09,237 INFO L85 PathProgramCache]: Analyzing trace with hash 897846150, now seen corresponding path program 5 times [2024-06-14 15:40:09,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:40:09,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401500198] [2024-06-14 15:40:09,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:40:09,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:40:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:40:13,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:40:13,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:40:13,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401500198] [2024-06-14 15:40:13,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401500198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:40:13,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:40:13,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:40:13,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683876472] [2024-06-14 15:40:13,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:40:13,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:40:13,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:40:13,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:40:13,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:40:13,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:40:13,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 177 transitions, 1731 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:40:13,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:40:13,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:40:13,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:40:13,924 INFO L124 PetriNetUnfolderBase]: 446/797 cut-off events. [2024-06-14 15:40:13,924 INFO L125 PetriNetUnfolderBase]: For 62181/62181 co-relation queries the response was YES. [2024-06-14 15:40:13,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5283 conditions, 797 events. 446/797 cut-off events. For 62181/62181 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3725 event pairs, 58 based on Foata normal form. 2/799 useless extension candidates. Maximal degree in co-relation 5182. Up to 680 conditions per place. [2024-06-14 15:40:13,929 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 150 selfloop transitions, 40 changer transitions 0/192 dead transitions. [2024-06-14 15:40:13,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 192 transitions, 2152 flow [2024-06-14 15:40:13,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:40:13,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:40:13,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 15:40:13,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-14 15:40:13,931 INFO L175 Difference]: Start difference. First operand has 206 places, 177 transitions, 1731 flow. Second operand 10 states and 109 transitions. [2024-06-14 15:40:13,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 192 transitions, 2152 flow [2024-06-14 15:40:14,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 192 transitions, 2078 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 15:40:14,071 INFO L231 Difference]: Finished difference. Result has 210 places, 178 transitions, 1752 flow [2024-06-14 15:40:14,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1657, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1752, PETRI_PLACES=210, PETRI_TRANSITIONS=178} [2024-06-14 15:40:14,071 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 179 predicate places. [2024-06-14 15:40:14,072 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 178 transitions, 1752 flow [2024-06-14 15:40:14,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:40:14,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:40:14,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:40:14,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 15:40:14,072 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:40:14,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:40:14,073 INFO L85 PathProgramCache]: Analyzing trace with hash -206005360, now seen corresponding path program 3 times [2024-06-14 15:40:14,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:40:14,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600467871] [2024-06-14 15:40:14,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:40:14,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:40:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:40:18,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:40:18,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:40:18,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600467871] [2024-06-14 15:40:18,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600467871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:40:18,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:40:18,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:40:18,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895532066] [2024-06-14 15:40:18,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:40:18,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:40:18,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:40:18,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:40:18,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:40:18,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:40:18,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 178 transitions, 1752 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:40:18,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:40:18,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:40:18,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:40:19,094 INFO L124 PetriNetUnfolderBase]: 442/791 cut-off events. [2024-06-14 15:40:19,094 INFO L125 PetriNetUnfolderBase]: For 58824/58824 co-relation queries the response was YES. [2024-06-14 15:40:19,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5100 conditions, 791 events. 442/791 cut-off events. For 58824/58824 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3695 event pairs, 49 based on Foata normal form. 2/793 useless extension candidates. Maximal degree in co-relation 4998. Up to 535 conditions per place. [2024-06-14 15:40:19,101 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 127 selfloop transitions, 66 changer transitions 0/195 dead transitions. [2024-06-14 15:40:19,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 195 transitions, 2176 flow [2024-06-14 15:40:19,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:40:19,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:40:19,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-14 15:40:19,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-14 15:40:19,102 INFO L175 Difference]: Start difference. First operand has 210 places, 178 transitions, 1752 flow. Second operand 9 states and 112 transitions. [2024-06-14 15:40:19,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 195 transitions, 2176 flow [2024-06-14 15:40:19,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 195 transitions, 2090 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 15:40:19,216 INFO L231 Difference]: Finished difference. Result has 211 places, 178 transitions, 1803 flow [2024-06-14 15:40:19,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1666, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1803, PETRI_PLACES=211, PETRI_TRANSITIONS=178} [2024-06-14 15:40:19,217 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-06-14 15:40:19,217 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 178 transitions, 1803 flow [2024-06-14 15:40:19,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:40:19,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:40:19,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:40:19,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 15:40:19,217 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:40:19,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:40:19,217 INFO L85 PathProgramCache]: Analyzing trace with hash -206005546, now seen corresponding path program 6 times [2024-06-14 15:40:19,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:40:19,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41818247] [2024-06-14 15:40:19,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:40:19,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:40:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:40:23,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:40:23,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:40:23,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41818247] [2024-06-14 15:40:23,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41818247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:40:23,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:40:23,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:40:23,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881604772] [2024-06-14 15:40:23,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:40:23,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:40:23,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:40:23,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:40:23,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:40:23,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:40:23,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 178 transitions, 1803 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:40:23,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:40:23,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:40:23,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:40:23,936 INFO L124 PetriNetUnfolderBase]: 446/799 cut-off events. [2024-06-14 15:40:23,937 INFO L125 PetriNetUnfolderBase]: For 60611/60611 co-relation queries the response was YES. [2024-06-14 15:40:23,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5225 conditions, 799 events. 446/799 cut-off events. For 60611/60611 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3757 event pairs, 57 based on Foata normal form. 2/801 useless extension candidates. Maximal degree in co-relation 5122. Up to 673 conditions per place. [2024-06-14 15:40:23,943 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 146 selfloop transitions, 44 changer transitions 0/192 dead transitions. [2024-06-14 15:40:23,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 192 transitions, 2224 flow [2024-06-14 15:40:23,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:40:23,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:40:23,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 15:40:23,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-14 15:40:23,943 INFO L175 Difference]: Start difference. First operand has 211 places, 178 transitions, 1803 flow. Second operand 9 states and 103 transitions. [2024-06-14 15:40:23,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 192 transitions, 2224 flow [2024-06-14 15:40:24,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 192 transitions, 2071 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-14 15:40:24,062 INFO L231 Difference]: Finished difference. Result has 212 places, 179 transitions, 1755 flow [2024-06-14 15:40:24,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1650, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1755, PETRI_PLACES=212, PETRI_TRANSITIONS=179} [2024-06-14 15:40:24,062 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-14 15:40:24,063 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 179 transitions, 1755 flow [2024-06-14 15:40:24,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:40:24,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:40:24,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:40:24,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-14 15:40:24,063 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:40:24,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:40:24,063 INFO L85 PathProgramCache]: Analyzing trace with hash -206010196, now seen corresponding path program 7 times [2024-06-14 15:40:24,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:40:24,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553735803] [2024-06-14 15:40:24,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:40:24,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:40:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:40:28,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:40:28,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:40:28,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553735803] [2024-06-14 15:40:28,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553735803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:40:28,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:40:28,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:40:28,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215710958] [2024-06-14 15:40:28,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:40:28,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:40:28,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:40:28,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:40:28,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:40:28,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:40:28,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 179 transitions, 1755 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:40:28,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:40:28,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:40:28,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:40:28,553 INFO L124 PetriNetUnfolderBase]: 443/794 cut-off events. [2024-06-14 15:40:28,553 INFO L125 PetriNetUnfolderBase]: For 56492/56492 co-relation queries the response was YES. [2024-06-14 15:40:28,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4996 conditions, 794 events. 443/794 cut-off events. For 56492/56492 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3728 event pairs, 54 based on Foata normal form. 2/796 useless extension candidates. Maximal degree in co-relation 4892. Up to 642 conditions per place. [2024-06-14 15:40:28,561 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 144 selfloop transitions, 47 changer transitions 0/193 dead transitions. [2024-06-14 15:40:28,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 193 transitions, 2169 flow [2024-06-14 15:40:28,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:40:28,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:40:28,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-14 15:40:28,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-14 15:40:28,562 INFO L175 Difference]: Start difference. First operand has 212 places, 179 transitions, 1755 flow. Second operand 9 states and 105 transitions. [2024-06-14 15:40:28,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 193 transitions, 2169 flow [2024-06-14 15:40:28,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 193 transitions, 2075 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 15:40:28,701 INFO L231 Difference]: Finished difference. Result has 214 places, 179 transitions, 1759 flow [2024-06-14 15:40:28,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1661, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1759, PETRI_PLACES=214, PETRI_TRANSITIONS=179} [2024-06-14 15:40:28,701 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 183 predicate places. [2024-06-14 15:40:28,701 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 179 transitions, 1759 flow [2024-06-14 15:40:28,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:40:28,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:40:28,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:40:28,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-14 15:40:28,701 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:40:28,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:40:28,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1084929492, now seen corresponding path program 8 times [2024-06-14 15:40:28,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:40:28,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691809822] [2024-06-14 15:40:28,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:40:28,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:40:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:40:32,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:40:32,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:40:32,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691809822] [2024-06-14 15:40:32,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691809822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:40:32,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:40:32,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:40:32,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622335502] [2024-06-14 15:40:32,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:40:32,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:40:32,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:40:32,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:40:32,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:40:32,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:40:32,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 179 transitions, 1759 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:40:32,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:40:32,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:40:32,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:40:33,103 INFO L124 PetriNetUnfolderBase]: 447/802 cut-off events. [2024-06-14 15:40:33,103 INFO L125 PetriNetUnfolderBase]: For 58057/58057 co-relation queries the response was YES. [2024-06-14 15:40:33,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5043 conditions, 802 events. 447/802 cut-off events. For 58057/58057 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3799 event pairs, 34 based on Foata normal form. 2/804 useless extension candidates. Maximal degree in co-relation 4938. Up to 516 conditions per place. [2024-06-14 15:40:33,109 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 132 selfloop transitions, 65 changer transitions 0/199 dead transitions. [2024-06-14 15:40:33,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 199 transitions, 2354 flow [2024-06-14 15:40:33,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:40:33,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:40:33,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 15:40:33,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-14 15:40:33,110 INFO L175 Difference]: Start difference. First operand has 214 places, 179 transitions, 1759 flow. Second operand 9 states and 109 transitions. [2024-06-14 15:40:33,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 199 transitions, 2354 flow [2024-06-14 15:40:33,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 199 transitions, 2207 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-14 15:40:33,234 INFO L231 Difference]: Finished difference. Result has 215 places, 180 transitions, 1753 flow [2024-06-14 15:40:33,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1612, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1753, PETRI_PLACES=215, PETRI_TRANSITIONS=180} [2024-06-14 15:40:33,234 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-14 15:40:33,235 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 180 transitions, 1753 flow [2024-06-14 15:40:33,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:40:33,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:40:33,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:40:33,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-14 15:40:33,235 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:40:33,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:40:33,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1084809522, now seen corresponding path program 9 times [2024-06-14 15:40:33,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:40:33,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061028000] [2024-06-14 15:40:33,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:40:33,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:40:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:40:37,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:40:37,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:40:37,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061028000] [2024-06-14 15:40:37,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061028000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:40:37,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:40:37,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:40:37,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693622676] [2024-06-14 15:40:37,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:40:37,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:40:37,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:40:37,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:40:37,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:40:37,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:40:37,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 180 transitions, 1753 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:40:37,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:40:37,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:40:37,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:40:37,718 INFO L124 PetriNetUnfolderBase]: 451/810 cut-off events. [2024-06-14 15:40:37,718 INFO L125 PetriNetUnfolderBase]: For 59597/59597 co-relation queries the response was YES. [2024-06-14 15:40:37,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5025 conditions, 810 events. 451/810 cut-off events. For 59597/59597 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3823 event pairs, 58 based on Foata normal form. 2/812 useless extension candidates. Maximal degree in co-relation 4920. Up to 621 conditions per place. [2024-06-14 15:40:37,724 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 128 selfloop transitions, 67 changer transitions 0/197 dead transitions. [2024-06-14 15:40:37,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 197 transitions, 2190 flow [2024-06-14 15:40:37,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:40:37,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:40:37,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-14 15:40:37,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 15:40:37,726 INFO L175 Difference]: Start difference. First operand has 215 places, 180 transitions, 1753 flow. Second operand 9 states and 108 transitions. [2024-06-14 15:40:37,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 197 transitions, 2190 flow [2024-06-14 15:40:37,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 197 transitions, 1997 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 15:40:37,868 INFO L231 Difference]: Finished difference. Result has 216 places, 181 transitions, 1709 flow [2024-06-14 15:40:37,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1564, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1709, PETRI_PLACES=216, PETRI_TRANSITIONS=181} [2024-06-14 15:40:37,869 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 185 predicate places. [2024-06-14 15:40:37,869 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 181 transitions, 1709 flow [2024-06-14 15:40:37,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:40:37,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:40:37,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:40:37,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-14 15:40:37,869 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:40:37,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:40:37,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1084814172, now seen corresponding path program 10 times [2024-06-14 15:40:37,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:40:37,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567930005] [2024-06-14 15:40:37,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:40:37,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:40:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:40:41,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:40:41,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:40:41,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567930005] [2024-06-14 15:40:41,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567930005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:40:41,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:40:41,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:40:41,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807150863] [2024-06-14 15:40:41,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:40:41,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:40:41,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:40:41,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:40:41,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:40:42,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:40:42,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 181 transitions, 1709 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:40:42,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:40:42,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:40:42,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:40:42,344 INFO L124 PetriNetUnfolderBase]: 455/818 cut-off events. [2024-06-14 15:40:42,344 INFO L125 PetriNetUnfolderBase]: For 60947/60947 co-relation queries the response was YES. [2024-06-14 15:40:42,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4938 conditions, 818 events. 455/818 cut-off events. For 60947/60947 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3898 event pairs, 58 based on Foata normal form. 2/820 useless extension candidates. Maximal degree in co-relation 4833. Up to 615 conditions per place. [2024-06-14 15:40:42,350 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 130 selfloop transitions, 67 changer transitions 0/199 dead transitions. [2024-06-14 15:40:42,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 199 transitions, 2150 flow [2024-06-14 15:40:42,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:40:42,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:40:42,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 15:40:42,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-14 15:40:42,351 INFO L175 Difference]: Start difference. First operand has 216 places, 181 transitions, 1709 flow. Second operand 9 states and 109 transitions. [2024-06-14 15:40:42,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 199 transitions, 2150 flow [2024-06-14 15:40:42,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 199 transitions, 2016 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-14 15:40:42,475 INFO L231 Difference]: Finished difference. Result has 218 places, 182 transitions, 1722 flow [2024-06-14 15:40:42,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1575, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1722, PETRI_PLACES=218, PETRI_TRANSITIONS=182} [2024-06-14 15:40:42,476 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 187 predicate places. [2024-06-14 15:40:42,476 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 182 transitions, 1722 flow [2024-06-14 15:40:42,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:40:42,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:40:42,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:40:42,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-14 15:40:42,476 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:40:42,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:40:42,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1080161196, now seen corresponding path program 4 times [2024-06-14 15:40:42,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:40:42,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820576567] [2024-06-14 15:40:42,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:40:42,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:40:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:40:48,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:40:48,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:40:48,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820576567] [2024-06-14 15:40:48,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820576567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:40:48,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:40:48,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:40:48,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62567622] [2024-06-14 15:40:48,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:40:48,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:40:48,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:40:48,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:40:48,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:40:48,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:40:48,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 182 transitions, 1722 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:40:48,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:40:48,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:40:48,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:40:48,858 INFO L124 PetriNetUnfolderBase]: 461/828 cut-off events. [2024-06-14 15:40:48,859 INFO L125 PetriNetUnfolderBase]: For 62721/62721 co-relation queries the response was YES. [2024-06-14 15:40:48,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5019 conditions, 828 events. 461/828 cut-off events. For 62721/62721 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3960 event pairs, 50 based on Foata normal form. 2/830 useless extension candidates. Maximal degree in co-relation 4913. Up to 432 conditions per place. [2024-06-14 15:40:48,864 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 121 selfloop transitions, 83 changer transitions 0/206 dead transitions. [2024-06-14 15:40:48,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 206 transitions, 2366 flow [2024-06-14 15:40:48,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:40:48,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:40:48,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-14 15:40:48,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-14 15:40:48,865 INFO L175 Difference]: Start difference. First operand has 218 places, 182 transitions, 1722 flow. Second operand 10 states and 126 transitions. [2024-06-14 15:40:48,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 206 transitions, 2366 flow [2024-06-14 15:40:49,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 206 transitions, 2230 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-14 15:40:49,011 INFO L231 Difference]: Finished difference. Result has 221 places, 184 transitions, 1787 flow [2024-06-14 15:40:49,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1586, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1787, PETRI_PLACES=221, PETRI_TRANSITIONS=184} [2024-06-14 15:40:49,011 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-14 15:40:49,011 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 184 transitions, 1787 flow [2024-06-14 15:40:49,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:40:49,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:40:49,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:40:49,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-14 15:40:49,012 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:40:49,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:40:49,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1080167892, now seen corresponding path program 11 times [2024-06-14 15:40:49,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:40:49,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144414512] [2024-06-14 15:40:49,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:40:49,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:40:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:40:53,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:40:53,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:40:53,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144414512] [2024-06-14 15:40:53,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144414512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:40:53,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:40:53,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:40:53,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132735249] [2024-06-14 15:40:53,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:40:53,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:40:53,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:40:53,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:40:53,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:40:53,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:40:53,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 184 transitions, 1787 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:40:53,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:40:53,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:40:53,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:40:54,196 INFO L124 PetriNetUnfolderBase]: 465/836 cut-off events. [2024-06-14 15:40:54,196 INFO L125 PetriNetUnfolderBase]: For 64519/64519 co-relation queries the response was YES. [2024-06-14 15:40:54,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5125 conditions, 836 events. 465/836 cut-off events. For 64519/64519 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4010 event pairs, 62 based on Foata normal form. 2/838 useless extension candidates. Maximal degree in co-relation 5018. Up to 641 conditions per place. [2024-06-14 15:40:54,203 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 132 selfloop transitions, 68 changer transitions 0/202 dead transitions. [2024-06-14 15:40:54,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 202 transitions, 2236 flow [2024-06-14 15:40:54,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:40:54,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:40:54,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 15:40:54,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-14 15:40:54,205 INFO L175 Difference]: Start difference. First operand has 221 places, 184 transitions, 1787 flow. Second operand 10 states and 116 transitions. [2024-06-14 15:40:54,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 202 transitions, 2236 flow [2024-06-14 15:40:54,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 202 transitions, 2050 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-14 15:40:54,340 INFO L231 Difference]: Finished difference. Result has 223 places, 185 transitions, 1754 flow [2024-06-14 15:40:54,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1601, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1754, PETRI_PLACES=223, PETRI_TRANSITIONS=185} [2024-06-14 15:40:54,341 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 192 predicate places. [2024-06-14 15:40:54,341 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 185 transitions, 1754 flow [2024-06-14 15:40:54,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:40:54,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:40:54,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:40:54,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-14 15:40:54,341 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:40:54,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:40:54,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1080345522, now seen corresponding path program 12 times [2024-06-14 15:40:54,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:40:54,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167874859] [2024-06-14 15:40:54,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:40:54,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:40:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:40:58,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:40:58,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:40:58,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167874859] [2024-06-14 15:40:58,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167874859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:40:58,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:40:58,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:40:58,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549783831] [2024-06-14 15:40:58,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:40:58,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:40:58,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:40:58,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:40:58,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:40:58,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:40:58,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 185 transitions, 1754 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:40:58,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:40:58,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:40:58,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:40:59,174 INFO L124 PetriNetUnfolderBase]: 469/844 cut-off events. [2024-06-14 15:40:59,174 INFO L125 PetriNetUnfolderBase]: For 65895/65895 co-relation queries the response was YES. [2024-06-14 15:40:59,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5109 conditions, 844 events. 469/844 cut-off events. For 65895/65895 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4060 event pairs, 38 based on Foata normal form. 2/846 useless extension candidates. Maximal degree in co-relation 5001. Up to 607 conditions per place. [2024-06-14 15:40:59,181 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 136 selfloop transitions, 70 changer transitions 0/208 dead transitions. [2024-06-14 15:40:59,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 208 transitions, 2389 flow [2024-06-14 15:40:59,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:40:59,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:40:59,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-14 15:40:59,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-14 15:40:59,182 INFO L175 Difference]: Start difference. First operand has 223 places, 185 transitions, 1754 flow. Second operand 10 states and 122 transitions. [2024-06-14 15:40:59,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 208 transitions, 2389 flow [2024-06-14 15:40:59,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 208 transitions, 2245 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 15:40:59,332 INFO L231 Difference]: Finished difference. Result has 225 places, 186 transitions, 1769 flow [2024-06-14 15:40:59,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1769, PETRI_PLACES=225, PETRI_TRANSITIONS=186} [2024-06-14 15:40:59,333 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-14 15:40:59,333 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 186 transitions, 1769 flow [2024-06-14 15:40:59,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:40:59,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:40:59,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:40:59,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-14 15:40:59,334 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:40:59,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:40:59,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1080167706, now seen corresponding path program 5 times [2024-06-14 15:40:59,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:40:59,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937419337] [2024-06-14 15:40:59,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:40:59,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:40:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:41:04,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:41:04,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:41:04,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937419337] [2024-06-14 15:41:04,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937419337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:41:04,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:41:04,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:41:04,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184389300] [2024-06-14 15:41:04,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:41:04,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:41:04,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:41:04,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:41:04,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:41:04,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:41:04,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 186 transitions, 1769 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:41:04,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:41:04,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:41:04,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:41:05,212 INFO L124 PetriNetUnfolderBase]: 475/854 cut-off events. [2024-06-14 15:41:05,212 INFO L125 PetriNetUnfolderBase]: For 66020/66020 co-relation queries the response was YES. [2024-06-14 15:41:05,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5173 conditions, 854 events. 475/854 cut-off events. For 66020/66020 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4129 event pairs, 50 based on Foata normal form. 2/856 useless extension candidates. Maximal degree in co-relation 5064. Up to 613 conditions per place. [2024-06-14 15:41:05,219 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 137 selfloop transitions, 71 changer transitions 0/210 dead transitions. [2024-06-14 15:41:05,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 210 transitions, 2265 flow [2024-06-14 15:41:05,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:41:05,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:41:05,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 15:41:05,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-14 15:41:05,219 INFO L175 Difference]: Start difference. First operand has 225 places, 186 transitions, 1769 flow. Second operand 10 states and 123 transitions. [2024-06-14 15:41:05,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 210 transitions, 2265 flow [2024-06-14 15:41:05,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 210 transitions, 2117 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 15:41:05,377 INFO L231 Difference]: Finished difference. Result has 226 places, 188 transitions, 1802 flow [2024-06-14 15:41:05,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1621, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1802, PETRI_PLACES=226, PETRI_TRANSITIONS=188} [2024-06-14 15:41:05,377 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-14 15:41:05,378 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 188 transitions, 1802 flow [2024-06-14 15:41:05,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:41:05,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:41:05,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:41:05,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-14 15:41:05,378 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:41:05,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:41:05,378 INFO L85 PathProgramCache]: Analyzing trace with hash 23337844, now seen corresponding path program 13 times [2024-06-14 15:41:05,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:41:05,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593520244] [2024-06-14 15:41:05,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:41:05,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:41:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:41:09,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:41:09,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:41:09,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593520244] [2024-06-14 15:41:09,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593520244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:41:09,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:41:09,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 15:41:09,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842514347] [2024-06-14 15:41:09,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:41:09,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 15:41:09,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:41:09,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 15:41:09,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-14 15:41:09,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:41:09,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 188 transitions, 1802 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:41:09,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:41:09,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:41:09,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:41:10,076 INFO L124 PetriNetUnfolderBase]: 479/862 cut-off events. [2024-06-14 15:41:10,076 INFO L125 PetriNetUnfolderBase]: For 67860/67860 co-relation queries the response was YES. [2024-06-14 15:41:10,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5239 conditions, 862 events. 479/862 cut-off events. For 67860/67860 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4182 event pairs, 62 based on Foata normal form. 2/864 useless extension candidates. Maximal degree in co-relation 5130. Up to 702 conditions per place. [2024-06-14 15:41:10,084 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 141 selfloop transitions, 65 changer transitions 0/208 dead transitions. [2024-06-14 15:41:10,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 208 transitions, 2269 flow [2024-06-14 15:41:10,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 15:41:10,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 15:41:10,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-14 15:41:10,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-14 15:41:10,085 INFO L175 Difference]: Start difference. First operand has 226 places, 188 transitions, 1802 flow. Second operand 9 states and 110 transitions. [2024-06-14 15:41:10,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 208 transitions, 2269 flow [2024-06-14 15:41:10,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 208 transitions, 2069 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-14 15:41:10,232 INFO L231 Difference]: Finished difference. Result has 227 places, 189 transitions, 1747 flow [2024-06-14 15:41:10,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1602, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1747, PETRI_PLACES=227, PETRI_TRANSITIONS=189} [2024-06-14 15:41:10,233 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-14 15:41:10,233 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 189 transitions, 1747 flow [2024-06-14 15:41:10,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:41:10,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:41:10,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:41:10,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-14 15:41:10,233 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:41:10,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:41:10,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1080340686, now seen corresponding path program 6 times [2024-06-14 15:41:10,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:41:10,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988295454] [2024-06-14 15:41:10,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:41:10,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:41:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:41:15,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:41:15,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:41:15,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988295454] [2024-06-14 15:41:15,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988295454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:41:15,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:41:15,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:41:15,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015099816] [2024-06-14 15:41:15,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:41:15,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:41:15,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:41:15,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:41:15,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:41:15,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:41:15,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 189 transitions, 1747 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:41:15,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:41:15,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:41:15,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:41:16,511 INFO L124 PetriNetUnfolderBase]: 485/872 cut-off events. [2024-06-14 15:41:16,511 INFO L125 PetriNetUnfolderBase]: For 69227/69227 co-relation queries the response was YES. [2024-06-14 15:41:16,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5236 conditions, 872 events. 485/872 cut-off events. For 69227/69227 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4251 event pairs, 50 based on Foata normal form. 2/874 useless extension candidates. Maximal degree in co-relation 5126. Up to 529 conditions per place. [2024-06-14 15:41:16,518 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 126 selfloop transitions, 89 changer transitions 0/217 dead transitions. [2024-06-14 15:41:16,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 217 transitions, 2435 flow [2024-06-14 15:41:16,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:41:16,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:41:16,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-14 15:41:16,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-14 15:41:16,519 INFO L175 Difference]: Start difference. First operand has 227 places, 189 transitions, 1747 flow. Second operand 10 states and 131 transitions. [2024-06-14 15:41:16,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 217 transitions, 2435 flow [2024-06-14 15:41:16,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 217 transitions, 2301 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-14 15:41:16,680 INFO L231 Difference]: Finished difference. Result has 230 places, 191 transitions, 1830 flow [2024-06-14 15:41:16,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1613, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1830, PETRI_PLACES=230, PETRI_TRANSITIONS=191} [2024-06-14 15:41:16,680 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 199 predicate places. [2024-06-14 15:41:16,680 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 191 transitions, 1830 flow [2024-06-14 15:41:16,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:41:16,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:41:16,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:41:16,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-14 15:41:16,681 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:41:16,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:41:16,681 INFO L85 PathProgramCache]: Analyzing trace with hash -913934112, now seen corresponding path program 14 times [2024-06-14 15:41:16,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:41:16,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492280370] [2024-06-14 15:41:16,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:41:16,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:41:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:41:21,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:41:21,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:41:21,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492280370] [2024-06-14 15:41:21,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492280370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:41:21,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:41:21,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:41:21,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693766758] [2024-06-14 15:41:21,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:41:21,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:41:21,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:41:21,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:41:21,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:41:21,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:41:21,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 191 transitions, 1830 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:41:21,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:41:21,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:41:21,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:41:21,894 INFO L124 PetriNetUnfolderBase]: 489/880 cut-off events. [2024-06-14 15:41:21,894 INFO L125 PetriNetUnfolderBase]: For 71180/71180 co-relation queries the response was YES. [2024-06-14 15:41:21,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5374 conditions, 880 events. 489/880 cut-off events. For 71180/71180 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4308 event pairs, 62 based on Foata normal form. 2/882 useless extension candidates. Maximal degree in co-relation 5263. Up to 691 conditions per place. [2024-06-14 15:41:21,901 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 137 selfloop transitions, 67 changer transitions 0/206 dead transitions. [2024-06-14 15:41:21,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 206 transitions, 2281 flow [2024-06-14 15:41:21,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:41:21,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:41:21,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 15:41:21,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-14 15:41:21,903 INFO L175 Difference]: Start difference. First operand has 230 places, 191 transitions, 1830 flow. Second operand 10 states and 111 transitions. [2024-06-14 15:41:21,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 206 transitions, 2281 flow [2024-06-14 15:41:22,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 206 transitions, 2057 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 15:41:22,063 INFO L231 Difference]: Finished difference. Result has 232 places, 192 transitions, 1757 flow [2024-06-14 15:41:22,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1606, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1757, PETRI_PLACES=232, PETRI_TRANSITIONS=192} [2024-06-14 15:41:22,063 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2024-06-14 15:41:22,063 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 192 transitions, 1757 flow [2024-06-14 15:41:22,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:41:22,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:41:22,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:41:22,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-14 15:41:22,064 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:41:22,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:41:22,064 INFO L85 PathProgramCache]: Analyzing trace with hash -913933926, now seen corresponding path program 7 times [2024-06-14 15:41:22,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:41:22,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408638704] [2024-06-14 15:41:22,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:41:22,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:41:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:41:27,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:41:27,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:41:27,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408638704] [2024-06-14 15:41:27,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408638704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:41:27,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:41:27,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:41:27,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983507921] [2024-06-14 15:41:27,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:41:27,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:41:27,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:41:27,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:41:27,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:41:27,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:41:27,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 192 transitions, 1757 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:41:27,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:41:27,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:41:27,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:41:27,816 INFO L124 PetriNetUnfolderBase]: 505/906 cut-off events. [2024-06-14 15:41:27,817 INFO L125 PetriNetUnfolderBase]: For 79451/79451 co-relation queries the response was YES. [2024-06-14 15:41:27,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5592 conditions, 906 events. 505/906 cut-off events. For 79451/79451 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4446 event pairs, 53 based on Foata normal form. 2/908 useless extension candidates. Maximal degree in co-relation 5480. Up to 662 conditions per place. [2024-06-14 15:41:27,824 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 152 selfloop transitions, 63 changer transitions 0/217 dead transitions. [2024-06-14 15:41:27,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 217 transitions, 2461 flow [2024-06-14 15:41:27,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:41:27,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:41:27,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 15:41:27,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-14 15:41:27,825 INFO L175 Difference]: Start difference. First operand has 232 places, 192 transitions, 1757 flow. Second operand 10 states and 123 transitions. [2024-06-14 15:41:27,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 217 transitions, 2461 flow [2024-06-14 15:41:28,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 217 transitions, 2321 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 15:41:28,004 INFO L231 Difference]: Finished difference. Result has 234 places, 196 transitions, 1812 flow [2024-06-14 15:41:28,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1617, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1812, PETRI_PLACES=234, PETRI_TRANSITIONS=196} [2024-06-14 15:41:28,005 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-14 15:41:28,005 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 196 transitions, 1812 flow [2024-06-14 15:41:28,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:41:28,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:41:28,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:41:28,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-14 15:41:28,005 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:41:28,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:41:28,005 INFO L85 PathProgramCache]: Analyzing trace with hash 189751300, now seen corresponding path program 8 times [2024-06-14 15:41:28,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:41:28,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688246383] [2024-06-14 15:41:28,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:41:28,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:41:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:41:32,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:41:32,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:41:32,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688246383] [2024-06-14 15:41:32,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688246383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:41:32,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:41:32,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:41:32,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567138617] [2024-06-14 15:41:32,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:41:32,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:41:32,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:41:32,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:41:32,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:41:33,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:41:33,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 196 transitions, 1812 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:41:33,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:41:33,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:41:33,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:41:33,451 INFO L124 PetriNetUnfolderBase]: 501/900 cut-off events. [2024-06-14 15:41:33,451 INFO L125 PetriNetUnfolderBase]: For 74132/74132 co-relation queries the response was YES. [2024-06-14 15:41:33,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5438 conditions, 900 events. 501/900 cut-off events. For 74132/74132 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4420 event pairs, 53 based on Foata normal form. 2/902 useless extension candidates. Maximal degree in co-relation 5325. Up to 668 conditions per place. [2024-06-14 15:41:33,458 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 153 selfloop transitions, 60 changer transitions 0/215 dead transitions. [2024-06-14 15:41:33,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 215 transitions, 2280 flow [2024-06-14 15:41:33,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:41:33,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:41:33,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-14 15:41:33,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-14 15:41:33,459 INFO L175 Difference]: Start difference. First operand has 234 places, 196 transitions, 1812 flow. Second operand 10 states and 119 transitions. [2024-06-14 15:41:33,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 215 transitions, 2280 flow [2024-06-14 15:41:33,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 215 transitions, 2169 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-14 15:41:33,642 INFO L231 Difference]: Finished difference. Result has 238 places, 196 transitions, 1826 flow [2024-06-14 15:41:33,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1701, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1826, PETRI_PLACES=238, PETRI_TRANSITIONS=196} [2024-06-14 15:41:33,642 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-14 15:41:33,642 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 196 transitions, 1826 flow [2024-06-14 15:41:33,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:41:33,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:41:33,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:41:33,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-14 15:41:33,643 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:41:33,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:41:33,643 INFO L85 PathProgramCache]: Analyzing trace with hash 196007410, now seen corresponding path program 9 times [2024-06-14 15:41:33,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:41:33,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294668727] [2024-06-14 15:41:33,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:41:33,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:41:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:41:39,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:41:39,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:41:39,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294668727] [2024-06-14 15:41:39,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294668727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:41:39,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:41:39,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:41:39,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731197525] [2024-06-14 15:41:39,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:41:39,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:41:39,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:41:39,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:41:39,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:41:39,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:41:39,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 196 transitions, 1826 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:41:39,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:41:39,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:41:39,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:41:39,770 INFO L124 PetriNetUnfolderBase]: 507/910 cut-off events. [2024-06-14 15:41:39,770 INFO L125 PetriNetUnfolderBase]: For 75724/75724 co-relation queries the response was YES. [2024-06-14 15:41:39,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5591 conditions, 910 events. 507/910 cut-off events. For 75724/75724 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4469 event pairs, 53 based on Foata normal form. 2/912 useless extension candidates. Maximal degree in co-relation 5476. Up to 678 conditions per place. [2024-06-14 15:41:39,778 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 154 selfloop transitions, 61 changer transitions 0/217 dead transitions. [2024-06-14 15:41:39,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 217 transitions, 2332 flow [2024-06-14 15:41:39,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:41:39,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:41:39,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 15:41:39,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-14 15:41:39,778 INFO L175 Difference]: Start difference. First operand has 238 places, 196 transitions, 1826 flow. Second operand 10 states and 118 transitions. [2024-06-14 15:41:39,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 217 transitions, 2332 flow [2024-06-14 15:41:39,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 217 transitions, 2207 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 15:41:39,948 INFO L231 Difference]: Finished difference. Result has 239 places, 198 transitions, 1866 flow [2024-06-14 15:41:39,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1701, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1866, PETRI_PLACES=239, PETRI_TRANSITIONS=198} [2024-06-14 15:41:39,949 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-14 15:41:39,949 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 198 transitions, 1866 flow [2024-06-14 15:41:39,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:41:39,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:41:39,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:41:39,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-14 15:41:39,949 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:41:39,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:41:39,949 INFO L85 PathProgramCache]: Analyzing trace with hash 196238050, now seen corresponding path program 10 times [2024-06-14 15:41:39,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:41:39,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76143494] [2024-06-14 15:41:39,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:41:39,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:41:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:41:45,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:41:45,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:41:45,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76143494] [2024-06-14 15:41:45,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76143494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:41:45,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:41:45,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:41:45,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293540708] [2024-06-14 15:41:45,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:41:45,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:41:45,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:41:45,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:41:45,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:41:45,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:41:45,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 198 transitions, 1866 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:41:45,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:41:45,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:41:45,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:41:45,785 INFO L124 PetriNetUnfolderBase]: 513/920 cut-off events. [2024-06-14 15:41:45,785 INFO L125 PetriNetUnfolderBase]: For 77769/77769 co-relation queries the response was YES. [2024-06-14 15:41:45,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5687 conditions, 920 events. 513/920 cut-off events. For 77769/77769 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4525 event pairs, 54 based on Foata normal form. 2/922 useless extension candidates. Maximal degree in co-relation 5571. Up to 688 conditions per place. [2024-06-14 15:41:45,792 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 153 selfloop transitions, 63 changer transitions 0/218 dead transitions. [2024-06-14 15:41:45,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 218 transitions, 2376 flow [2024-06-14 15:41:45,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:41:45,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:41:45,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 15:41:45,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-14 15:41:45,793 INFO L175 Difference]: Start difference. First operand has 239 places, 198 transitions, 1866 flow. Second operand 10 states and 116 transitions. [2024-06-14 15:41:45,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 218 transitions, 2376 flow [2024-06-14 15:41:45,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 218 transitions, 2233 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 15:41:45,950 INFO L231 Difference]: Finished difference. Result has 241 places, 200 transitions, 1896 flow [2024-06-14 15:41:45,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1723, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1896, PETRI_PLACES=241, PETRI_TRANSITIONS=200} [2024-06-14 15:41:45,950 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 210 predicate places. [2024-06-14 15:41:45,950 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 200 transitions, 1896 flow [2024-06-14 15:41:45,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:41:45,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:41:45,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:41:45,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-14 15:41:45,951 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:41:45,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:41:45,951 INFO L85 PathProgramCache]: Analyzing trace with hash 196246978, now seen corresponding path program 1 times [2024-06-14 15:41:45,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:41:45,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667299609] [2024-06-14 15:41:45,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:41:45,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:41:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:41:51,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:41:51,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:41:51,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667299609] [2024-06-14 15:41:51,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667299609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:41:51,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:41:51,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:41:51,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105283610] [2024-06-14 15:41:51,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:41:51,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:41:51,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:41:51,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:41:51,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:41:51,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:41:51,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 200 transitions, 1896 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:41:51,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:41:51,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:41:51,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:41:51,655 INFO L124 PetriNetUnfolderBase]: 521/936 cut-off events. [2024-06-14 15:41:51,656 INFO L125 PetriNetUnfolderBase]: For 87862/87862 co-relation queries the response was YES. [2024-06-14 15:41:51,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5827 conditions, 936 events. 521/936 cut-off events. For 87862/87862 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4667 event pairs, 54 based on Foata normal form. 4/940 useless extension candidates. Maximal degree in co-relation 5710. Up to 700 conditions per place. [2024-06-14 15:41:51,664 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 159 selfloop transitions, 58 changer transitions 0/219 dead transitions. [2024-06-14 15:41:51,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 219 transitions, 2420 flow [2024-06-14 15:41:51,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:41:51,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:41:51,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 15:41:51,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-14 15:41:51,665 INFO L175 Difference]: Start difference. First operand has 241 places, 200 transitions, 1896 flow. Second operand 10 states and 116 transitions. [2024-06-14 15:41:51,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 219 transitions, 2420 flow [2024-06-14 15:41:51,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 219 transitions, 2285 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 15:41:51,864 INFO L231 Difference]: Finished difference. Result has 244 places, 202 transitions, 1938 flow [2024-06-14 15:41:51,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1761, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1938, PETRI_PLACES=244, PETRI_TRANSITIONS=202} [2024-06-14 15:41:51,864 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-14 15:41:51,865 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 202 transitions, 1938 flow [2024-06-14 15:41:51,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:41:51,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:41:51,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:41:51,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-14 15:41:51,865 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:41:51,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:41:51,866 INFO L85 PathProgramCache]: Analyzing trace with hash 196000900, now seen corresponding path program 11 times [2024-06-14 15:41:51,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:41:51,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351365259] [2024-06-14 15:41:51,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:41:51,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:41:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:41:56,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:41:56,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:41:56,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351365259] [2024-06-14 15:41:56,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351365259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:41:56,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:41:56,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:41:56,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019457747] [2024-06-14 15:41:56,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:41:56,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:41:56,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:41:56,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:41:56,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:41:56,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:41:56,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 202 transitions, 1938 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:41:56,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:41:56,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:41:56,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:41:57,259 INFO L124 PetriNetUnfolderBase]: 527/946 cut-off events. [2024-06-14 15:41:57,259 INFO L125 PetriNetUnfolderBase]: For 82097/82097 co-relation queries the response was YES. [2024-06-14 15:41:57,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5904 conditions, 946 events. 527/946 cut-off events. For 82097/82097 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4721 event pairs, 53 based on Foata normal form. 2/948 useless extension candidates. Maximal degree in co-relation 5786. Up to 697 conditions per place. [2024-06-14 15:41:57,267 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 155 selfloop transitions, 66 changer transitions 0/223 dead transitions. [2024-06-14 15:41:57,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 223 transitions, 2464 flow [2024-06-14 15:41:57,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:41:57,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:41:57,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-14 15:41:57,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-14 15:41:57,268 INFO L175 Difference]: Start difference. First operand has 244 places, 202 transitions, 1938 flow. Second operand 10 states and 119 transitions. [2024-06-14 15:41:57,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 223 transitions, 2464 flow [2024-06-14 15:41:57,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 223 transitions, 2301 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-14 15:41:57,445 INFO L231 Difference]: Finished difference. Result has 246 places, 204 transitions, 1958 flow [2024-06-14 15:41:57,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1775, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1958, PETRI_PLACES=246, PETRI_TRANSITIONS=204} [2024-06-14 15:41:57,445 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 215 predicate places. [2024-06-14 15:41:57,445 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 204 transitions, 1958 flow [2024-06-14 15:41:57,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:41:57,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:41:57,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:41:57,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-14 15:41:57,445 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:41:57,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:41:57,446 INFO L85 PathProgramCache]: Analyzing trace with hash -907678002, now seen corresponding path program 15 times [2024-06-14 15:41:57,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:41:57,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609842160] [2024-06-14 15:41:57,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:41:57,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:41:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:42:01,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:42:01,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:42:01,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609842160] [2024-06-14 15:42:01,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609842160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:42:01,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:42:01,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:42:01,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120211736] [2024-06-14 15:42:01,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:42:01,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:42:01,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:42:01,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:42:01,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:42:01,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:42:01,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 204 transitions, 1958 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:42:01,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:42:01,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:42:01,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:42:02,228 INFO L124 PetriNetUnfolderBase]: 531/954 cut-off events. [2024-06-14 15:42:02,228 INFO L125 PetriNetUnfolderBase]: For 83448/83448 co-relation queries the response was YES. [2024-06-14 15:42:02,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5900 conditions, 954 events. 531/954 cut-off events. For 83448/83448 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4768 event pairs, 70 based on Foata normal form. 2/956 useless extension candidates. Maximal degree in co-relation 5781. Up to 837 conditions per place. [2024-06-14 15:42:02,235 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 175 selfloop transitions, 42 changer transitions 0/219 dead transitions. [2024-06-14 15:42:02,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 219 transitions, 2437 flow [2024-06-14 15:42:02,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:42:02,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:42:02,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 15:42:02,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-14 15:42:02,237 INFO L175 Difference]: Start difference. First operand has 246 places, 204 transitions, 1958 flow. Second operand 10 states and 108 transitions. [2024-06-14 15:42:02,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 219 transitions, 2437 flow [2024-06-14 15:42:02,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 219 transitions, 2276 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-14 15:42:02,421 INFO L231 Difference]: Finished difference. Result has 248 places, 205 transitions, 1900 flow [2024-06-14 15:42:02,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1797, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1900, PETRI_PLACES=248, PETRI_TRANSITIONS=205} [2024-06-14 15:42:02,421 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-14 15:42:02,421 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 205 transitions, 1900 flow [2024-06-14 15:42:02,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:42:02,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:42:02,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:42:02,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-14 15:42:02,422 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:42:02,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:42:02,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1226165502, now seen corresponding path program 2 times [2024-06-14 15:42:02,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:42:02,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83977001] [2024-06-14 15:42:02,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:42:02,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:42:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:42:07,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:42:07,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:42:07,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83977001] [2024-06-14 15:42:07,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83977001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:42:07,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:42:07,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:42:07,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762986644] [2024-06-14 15:42:07,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:42:07,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:42:07,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:42:07,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:42:07,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:42:08,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:42:08,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 205 transitions, 1900 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:42:08,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:42:08,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:42:08,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:42:08,537 INFO L124 PetriNetUnfolderBase]: 538/967 cut-off events. [2024-06-14 15:42:08,537 INFO L125 PetriNetUnfolderBase]: For 85144/85144 co-relation queries the response was YES. [2024-06-14 15:42:08,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5897 conditions, 967 events. 538/967 cut-off events. For 85144/85144 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4871 event pairs, 59 based on Foata normal form. 2/969 useless extension candidates. Maximal degree in co-relation 5777. Up to 910 conditions per place. [2024-06-14 15:42:08,545 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 197 selfloop transitions, 24 changer transitions 0/223 dead transitions. [2024-06-14 15:42:08,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 223 transitions, 2421 flow [2024-06-14 15:42:08,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:42:08,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:42:08,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-14 15:42:08,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.321875 [2024-06-14 15:42:08,546 INFO L175 Difference]: Start difference. First operand has 248 places, 205 transitions, 1900 flow. Second operand 10 states and 103 transitions. [2024-06-14 15:42:08,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 223 transitions, 2421 flow [2024-06-14 15:42:08,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 223 transitions, 2329 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-14 15:42:08,751 INFO L231 Difference]: Finished difference. Result has 252 places, 210 transitions, 1934 flow [2024-06-14 15:42:08,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1808, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1934, PETRI_PLACES=252, PETRI_TRANSITIONS=210} [2024-06-14 15:42:08,752 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-14 15:42:08,752 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 210 transitions, 1934 flow [2024-06-14 15:42:08,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:42:08,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:42:08,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:42:08,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-14 15:42:08,752 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:42:08,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:42:08,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1990455934, now seen corresponding path program 12 times [2024-06-14 15:42:08,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:42:08,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409125292] [2024-06-14 15:42:08,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:42:08,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:42:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:42:14,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:42:14,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:42:14,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409125292] [2024-06-14 15:42:14,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409125292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:42:14,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:42:14,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:42:14,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270236972] [2024-06-14 15:42:14,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:42:14,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:42:14,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:42:14,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:42:14,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:42:14,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:42:14,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 210 transitions, 1934 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:42:14,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:42:14,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:42:14,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:42:14,761 INFO L124 PetriNetUnfolderBase]: 544/977 cut-off events. [2024-06-14 15:42:14,761 INFO L125 PetriNetUnfolderBase]: For 87299/87299 co-relation queries the response was YES. [2024-06-14 15:42:14,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6044 conditions, 977 events. 544/977 cut-off events. For 87299/87299 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4896 event pairs, 65 based on Foata normal form. 2/979 useless extension candidates. Maximal degree in co-relation 5921. Up to 904 conditions per place. [2024-06-14 15:42:14,769 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 194 selfloop transitions, 29 changer transitions 0/225 dead transitions. [2024-06-14 15:42:14,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 225 transitions, 2460 flow [2024-06-14 15:42:14,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:42:14,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:42:14,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 15:42:14,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-14 15:42:14,771 INFO L175 Difference]: Start difference. First operand has 252 places, 210 transitions, 1934 flow. Second operand 10 states and 106 transitions. [2024-06-14 15:42:14,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 225 transitions, 2460 flow [2024-06-14 15:42:14,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 225 transitions, 2411 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-14 15:42:14,952 INFO L231 Difference]: Finished difference. Result has 257 places, 212 transitions, 1998 flow [2024-06-14 15:42:14,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1885, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1998, PETRI_PLACES=257, PETRI_TRANSITIONS=212} [2024-06-14 15:42:14,953 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-14 15:42:14,953 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 212 transitions, 1998 flow [2024-06-14 15:42:14,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:42:14,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:42:14,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:42:14,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-14 15:42:14,954 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:42:14,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:42:14,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1195838556, now seen corresponding path program 3 times [2024-06-14 15:42:14,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:42:14,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116677591] [2024-06-14 15:42:14,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:42:14,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:42:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:42:20,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:42:20,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:42:20,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116677591] [2024-06-14 15:42:20,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116677591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:42:20,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:42:20,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:42:20,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535290503] [2024-06-14 15:42:20,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:42:20,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:42:20,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:42:20,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:42:20,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:42:20,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:42:20,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 212 transitions, 1998 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:42:20,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:42:20,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:42:20,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:42:20,850 INFO L124 PetriNetUnfolderBase]: 548/985 cut-off events. [2024-06-14 15:42:20,850 INFO L125 PetriNetUnfolderBase]: For 89192/89192 co-relation queries the response was YES. [2024-06-14 15:42:20,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6124 conditions, 985 events. 548/985 cut-off events. For 89192/89192 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 4977 event pairs, 61 based on Foata normal form. 2/987 useless extension candidates. Maximal degree in co-relation 6000. Up to 910 conditions per place. [2024-06-14 15:42:20,862 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 194 selfloop transitions, 30 changer transitions 0/226 dead transitions. [2024-06-14 15:42:20,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 226 transitions, 2506 flow [2024-06-14 15:42:20,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:42:20,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:42:20,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-14 15:42:20,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-14 15:42:20,863 INFO L175 Difference]: Start difference. First operand has 257 places, 212 transitions, 1998 flow. Second operand 10 states and 105 transitions. [2024-06-14 15:42:20,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 226 transitions, 2506 flow [2024-06-14 15:42:21,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 226 transitions, 2415 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-14 15:42:21,052 INFO L231 Difference]: Finished difference. Result has 259 places, 213 transitions, 2001 flow [2024-06-14 15:42:21,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1907, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2001, PETRI_PLACES=259, PETRI_TRANSITIONS=213} [2024-06-14 15:42:21,053 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-14 15:42:21,053 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 213 transitions, 2001 flow [2024-06-14 15:42:21,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:42:21,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:42:21,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:42:21,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-14 15:42:21,053 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:42:21,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:42:21,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1637145950, now seen corresponding path program 4 times [2024-06-14 15:42:21,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:42:21,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007487937] [2024-06-14 15:42:21,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:42:21,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:42:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:42:25,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:42:25,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:42:25,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007487937] [2024-06-14 15:42:25,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007487937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:42:25,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:42:25,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:42:25,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326270759] [2024-06-14 15:42:25,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:42:25,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:42:25,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:42:25,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:42:25,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:42:25,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:42:25,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 213 transitions, 2001 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:42:25,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:42:25,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:42:25,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:42:26,363 INFO L124 PetriNetUnfolderBase]: 552/993 cut-off events. [2024-06-14 15:42:26,363 INFO L125 PetriNetUnfolderBase]: For 91225/91225 co-relation queries the response was YES. [2024-06-14 15:42:26,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6181 conditions, 993 events. 552/993 cut-off events. For 91225/91225 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4996 event pairs, 67 based on Foata normal form. 2/995 useless extension candidates. Maximal degree in co-relation 6056. Up to 952 conditions per place. [2024-06-14 15:42:26,371 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 206 selfloop transitions, 18 changer transitions 0/226 dead transitions. [2024-06-14 15:42:26,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 226 transitions, 2507 flow [2024-06-14 15:42:26,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:42:26,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:42:26,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-06-14 15:42:26,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30625 [2024-06-14 15:42:26,373 INFO L175 Difference]: Start difference. First operand has 259 places, 213 transitions, 2001 flow. Second operand 10 states and 98 transitions. [2024-06-14 15:42:26,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 226 transitions, 2507 flow [2024-06-14 15:42:26,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 226 transitions, 2423 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-14 15:42:26,586 INFO L231 Difference]: Finished difference. Result has 261 places, 214 transitions, 1990 flow [2024-06-14 15:42:26,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1917, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1990, PETRI_PLACES=261, PETRI_TRANSITIONS=214} [2024-06-14 15:42:26,587 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-14 15:42:26,587 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 214 transitions, 1990 flow [2024-06-14 15:42:26,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:42:26,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:42:26,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:42:26,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-14 15:42:26,587 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:42:26,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:42:26,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1637137022, now seen corresponding path program 13 times [2024-06-14 15:42:26,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:42:26,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593976071] [2024-06-14 15:42:26,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:42:26,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:42:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:42:31,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:42:31,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:42:31,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593976071] [2024-06-14 15:42:31,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593976071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:42:31,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:42:31,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:42:31,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322644168] [2024-06-14 15:42:31,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:42:31,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:42:31,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:42:31,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:42:31,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:42:31,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:42:31,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 214 transitions, 1990 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:42:31,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:42:31,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:42:31,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:42:31,868 INFO L124 PetriNetUnfolderBase]: 558/1003 cut-off events. [2024-06-14 15:42:31,868 INFO L125 PetriNetUnfolderBase]: For 93087/93087 co-relation queries the response was YES. [2024-06-14 15:42:31,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6214 conditions, 1003 events. 558/1003 cut-off events. For 93087/93087 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5090 event pairs, 66 based on Foata normal form. 2/1005 useless extension candidates. Maximal degree in co-relation 6088. Up to 952 conditions per place. [2024-06-14 15:42:31,876 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 207 selfloop transitions, 20 changer transitions 0/229 dead transitions. [2024-06-14 15:42:31,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 229 transitions, 2528 flow [2024-06-14 15:42:31,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:42:31,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:42:31,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-14 15:42:31,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.315625 [2024-06-14 15:42:31,877 INFO L175 Difference]: Start difference. First operand has 261 places, 214 transitions, 1990 flow. Second operand 10 states and 101 transitions. [2024-06-14 15:42:31,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 229 transitions, 2528 flow [2024-06-14 15:42:32,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 229 transitions, 2467 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 15:42:32,110 INFO L231 Difference]: Finished difference. Result has 263 places, 216 transitions, 2028 flow [2024-06-14 15:42:32,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2028, PETRI_PLACES=263, PETRI_TRANSITIONS=216} [2024-06-14 15:42:32,110 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-14 15:42:32,110 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 216 transitions, 2028 flow [2024-06-14 15:42:32,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:42:32,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:42:32,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:42:32,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-14 15:42:32,111 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:42:32,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:42:32,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1864823852, now seen corresponding path program 14 times [2024-06-14 15:42:32,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:42:32,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128525084] [2024-06-14 15:42:32,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:42:32,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:42:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:42:37,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:42:37,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:42:37,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128525084] [2024-06-14 15:42:37,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128525084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:42:37,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:42:37,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:42:37,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087517000] [2024-06-14 15:42:37,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:42:37,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:42:37,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:42:37,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:42:37,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:42:37,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:42:37,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 216 transitions, 2028 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:42:37,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:42:37,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:42:37,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:42:38,311 INFO L124 PetriNetUnfolderBase]: 564/1013 cut-off events. [2024-06-14 15:42:38,312 INFO L125 PetriNetUnfolderBase]: For 95116/95116 co-relation queries the response was YES. [2024-06-14 15:42:38,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6292 conditions, 1013 events. 564/1013 cut-off events. For 95116/95116 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5172 event pairs, 64 based on Foata normal form. 2/1015 useless extension candidates. Maximal degree in co-relation 6165. Up to 936 conditions per place. [2024-06-14 15:42:38,321 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 202 selfloop transitions, 28 changer transitions 0/232 dead transitions. [2024-06-14 15:42:38,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 232 transitions, 2580 flow [2024-06-14 15:42:38,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:42:38,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:42:38,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-14 15:42:38,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-14 15:42:38,322 INFO L175 Difference]: Start difference. First operand has 263 places, 216 transitions, 2028 flow. Second operand 10 states and 105 transitions. [2024-06-14 15:42:38,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 232 transitions, 2580 flow [2024-06-14 15:42:38,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 232 transitions, 2503 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-14 15:42:38,604 INFO L231 Difference]: Finished difference. Result has 265 places, 218 transitions, 2070 flow [2024-06-14 15:42:38,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1951, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2070, PETRI_PLACES=265, PETRI_TRANSITIONS=218} [2024-06-14 15:42:38,605 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-14 15:42:38,605 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 218 transitions, 2070 flow [2024-06-14 15:42:38,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:42:38,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:42:38,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:42:38,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-14 15:42:38,606 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:42:38,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:42:38,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1232661180, now seen corresponding path program 15 times [2024-06-14 15:42:38,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:42:38,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092813487] [2024-06-14 15:42:38,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:42:38,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:42:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:42:44,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:42:44,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:42:44,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092813487] [2024-06-14 15:42:44,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092813487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:42:44,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:42:44,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:42:44,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798945298] [2024-06-14 15:42:44,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:42:44,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:42:44,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:42:44,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:42:44,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:42:44,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:42:44,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 218 transitions, 2070 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:42:44,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:42:44,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:42:44,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:42:45,082 INFO L124 PetriNetUnfolderBase]: 570/1023 cut-off events. [2024-06-14 15:42:45,082 INFO L125 PetriNetUnfolderBase]: For 97270/97270 co-relation queries the response was YES. [2024-06-14 15:42:45,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6392 conditions, 1023 events. 570/1023 cut-off events. For 97270/97270 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5225 event pairs, 71 based on Foata normal form. 2/1025 useless extension candidates. Maximal degree in co-relation 6264. Up to 950 conditions per place. [2024-06-14 15:42:45,091 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 204 selfloop transitions, 28 changer transitions 0/234 dead transitions. [2024-06-14 15:42:45,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 234 transitions, 2630 flow [2024-06-14 15:42:45,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:42:45,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:42:45,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 15:42:45,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-14 15:42:45,092 INFO L175 Difference]: Start difference. First operand has 265 places, 218 transitions, 2070 flow. Second operand 10 states and 108 transitions. [2024-06-14 15:42:45,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 234 transitions, 2630 flow [2024-06-14 15:42:45,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 234 transitions, 2533 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-14 15:42:45,343 INFO L231 Difference]: Finished difference. Result has 267 places, 220 transitions, 2096 flow [2024-06-14 15:42:45,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1973, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2096, PETRI_PLACES=267, PETRI_TRANSITIONS=220} [2024-06-14 15:42:45,343 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 236 predicate places. [2024-06-14 15:42:45,343 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 220 transitions, 2096 flow [2024-06-14 15:42:45,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:42:45,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:42:45,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:42:45,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-14 15:42:45,344 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:42:45,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:42:45,344 INFO L85 PathProgramCache]: Analyzing trace with hash 751302998, now seen corresponding path program 5 times [2024-06-14 15:42:45,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:42:45,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603784442] [2024-06-14 15:42:45,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:42:45,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:42:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:42:50,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:42:50,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:42:50,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603784442] [2024-06-14 15:42:50,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603784442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:42:50,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:42:50,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:42:50,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054978269] [2024-06-14 15:42:50,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:42:50,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:42:50,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:42:50,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:42:50,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:42:50,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:42:50,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 220 transitions, 2096 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:42:50,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:42:50,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:42:50,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:42:51,174 INFO L124 PetriNetUnfolderBase]: 574/1031 cut-off events. [2024-06-14 15:42:51,174 INFO L125 PetriNetUnfolderBase]: For 99485/99485 co-relation queries the response was YES. [2024-06-14 15:42:51,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6442 conditions, 1031 events. 574/1031 cut-off events. For 99485/99485 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5259 event pairs, 71 based on Foata normal form. 2/1033 useless extension candidates. Maximal degree in co-relation 6313. Up to 993 conditions per place. [2024-06-14 15:42:51,185 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 216 selfloop transitions, 15 changer transitions 0/233 dead transitions. [2024-06-14 15:42:51,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 233 transitions, 2616 flow [2024-06-14 15:42:51,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:42:51,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:42:51,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-14 15:42:51,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-14 15:42:51,186 INFO L175 Difference]: Start difference. First operand has 267 places, 220 transitions, 2096 flow. Second operand 10 states and 96 transitions. [2024-06-14 15:42:51,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 233 transitions, 2616 flow [2024-06-14 15:42:51,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 233 transitions, 2515 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-14 15:42:51,431 INFO L231 Difference]: Finished difference. Result has 269 places, 221 transitions, 2063 flow [2024-06-14 15:42:51,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1995, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2063, PETRI_PLACES=269, PETRI_TRANSITIONS=221} [2024-06-14 15:42:51,432 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-14 15:42:51,432 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 221 transitions, 2063 flow [2024-06-14 15:42:51,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:42:51,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:42:51,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:42:51,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-14 15:42:51,433 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:42:51,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:42:51,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1983962674, now seen corresponding path program 16 times [2024-06-14 15:42:51,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:42:51,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564930314] [2024-06-14 15:42:51,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:42:51,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:42:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:42:56,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:42:56,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:42:56,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564930314] [2024-06-14 15:42:56,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564930314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:42:56,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:42:56,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:42:56,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724911856] [2024-06-14 15:42:56,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:42:56,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:42:56,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:42:56,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:42:56,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:42:56,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:42:56,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 221 transitions, 2063 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:42:56,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:42:56,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:42:56,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:42:57,147 INFO L124 PetriNetUnfolderBase]: 583/1046 cut-off events. [2024-06-14 15:42:57,147 INFO L125 PetriNetUnfolderBase]: For 101829/101829 co-relation queries the response was YES. [2024-06-14 15:42:57,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6509 conditions, 1046 events. 583/1046 cut-off events. For 101829/101829 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5387 event pairs, 61 based on Foata normal form. 2/1048 useless extension candidates. Maximal degree in co-relation 6379. Up to 924 conditions per place. [2024-06-14 15:42:57,156 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 195 selfloop transitions, 43 changer transitions 0/240 dead transitions. [2024-06-14 15:42:57,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 240 transitions, 2662 flow [2024-06-14 15:42:57,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:42:57,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:42:57,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 15:42:57,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-14 15:42:57,159 INFO L175 Difference]: Start difference. First operand has 269 places, 221 transitions, 2063 flow. Second operand 10 states and 111 transitions. [2024-06-14 15:42:57,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 240 transitions, 2662 flow [2024-06-14 15:42:57,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 240 transitions, 2604 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-14 15:42:57,420 INFO L231 Difference]: Finished difference. Result has 272 places, 225 transitions, 2205 flow [2024-06-14 15:42:57,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2005, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2205, PETRI_PLACES=272, PETRI_TRANSITIONS=225} [2024-06-14 15:42:57,420 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 241 predicate places. [2024-06-14 15:42:57,420 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 225 transitions, 2205 flow [2024-06-14 15:42:57,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:42:57,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:42:57,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:42:57,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-14 15:42:57,421 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:42:57,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:42:57,421 INFO L85 PathProgramCache]: Analyzing trace with hash -819354102, now seen corresponding path program 16 times [2024-06-14 15:42:57,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:42:57,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402224478] [2024-06-14 15:42:57,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:42:57,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:42:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:43:01,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:43:01,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:43:01,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402224478] [2024-06-14 15:43:01,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402224478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:43:01,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:43:01,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:43:01,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633997932] [2024-06-14 15:43:01,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:43:01,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:43:01,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:43:01,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:43:01,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:43:01,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:43:01,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 225 transitions, 2205 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:43:01,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:43:01,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:43:01,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:43:02,078 INFO L124 PetriNetUnfolderBase]: 587/1054 cut-off events. [2024-06-14 15:43:02,078 INFO L125 PetriNetUnfolderBase]: For 103800/103800 co-relation queries the response was YES. [2024-06-14 15:43:02,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6644 conditions, 1054 events. 587/1054 cut-off events. For 103800/103800 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5417 event pairs, 75 based on Foata normal form. 2/1056 useless extension candidates. Maximal degree in co-relation 6512. Up to 1012 conditions per place. [2024-06-14 15:43:02,086 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 214 selfloop transitions, 21 changer transitions 0/237 dead transitions. [2024-06-14 15:43:02,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 237 transitions, 2714 flow [2024-06-14 15:43:02,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:43:02,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:43:02,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-14 15:43:02,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-14 15:43:02,087 INFO L175 Difference]: Start difference. First operand has 272 places, 225 transitions, 2205 flow. Second operand 10 states and 100 transitions. [2024-06-14 15:43:02,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 237 transitions, 2714 flow [2024-06-14 15:43:02,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 237 transitions, 2599 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-14 15:43:02,363 INFO L231 Difference]: Finished difference. Result has 275 places, 226 transitions, 2153 flow [2024-06-14 15:43:02,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2090, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2153, PETRI_PLACES=275, PETRI_TRANSITIONS=226} [2024-06-14 15:43:02,364 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 244 predicate places. [2024-06-14 15:43:02,364 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 226 transitions, 2153 flow [2024-06-14 15:43:02,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:43:02,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:43:02,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:43:02,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-14 15:43:02,364 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:43:02,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:43:02,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1226411580, now seen corresponding path program 17 times [2024-06-14 15:43:02,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:43:02,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422759697] [2024-06-14 15:43:02,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:43:02,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:43:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:43:07,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:43:07,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:43:07,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422759697] [2024-06-14 15:43:07,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422759697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:43:07,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:43:07,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:43:07,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25143728] [2024-06-14 15:43:07,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:43:07,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:43:07,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:43:07,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:43:07,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:43:07,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:43:07,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 226 transitions, 2153 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:43:07,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:43:07,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:43:07,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:43:07,850 INFO L124 PetriNetUnfolderBase]: 603/1080 cut-off events. [2024-06-14 15:43:07,850 INFO L125 PetriNetUnfolderBase]: For 116497/116497 co-relation queries the response was YES. [2024-06-14 15:43:07,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7029 conditions, 1080 events. 603/1080 cut-off events. For 116497/116497 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5581 event pairs, 71 based on Foata normal form. 2/1082 useless extension candidates. Maximal degree in co-relation 6896. Up to 987 conditions per place. [2024-06-14 15:43:07,860 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 210 selfloop transitions, 33 changer transitions 0/245 dead transitions. [2024-06-14 15:43:07,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 245 transitions, 3013 flow [2024-06-14 15:43:07,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:43:07,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:43:07,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 15:43:07,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 15:43:07,861 INFO L175 Difference]: Start difference. First operand has 275 places, 226 transitions, 2153 flow. Second operand 10 states and 110 transitions. [2024-06-14 15:43:07,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 245 transitions, 3013 flow [2024-06-14 15:43:08,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 245 transitions, 2961 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 15:43:08,196 INFO L231 Difference]: Finished difference. Result has 277 places, 230 transitions, 2308 flow [2024-06-14 15:43:08,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2101, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2308, PETRI_PLACES=277, PETRI_TRANSITIONS=230} [2024-06-14 15:43:08,197 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 246 predicate places. [2024-06-14 15:43:08,197 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 230 transitions, 2308 flow [2024-06-14 15:43:08,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:43:08,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:43:08,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:43:08,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-14 15:43:08,198 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:43:08,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:43:08,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1226405070, now seen corresponding path program 18 times [2024-06-14 15:43:08,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:43:08,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342171094] [2024-06-14 15:43:08,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:43:08,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:43:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:43:13,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:43:13,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:43:13,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342171094] [2024-06-14 15:43:13,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342171094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:43:13,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:43:13,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:43:13,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137654340] [2024-06-14 15:43:13,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:43:13,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:43:13,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:43:13,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:43:13,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:43:13,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:43:13,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 230 transitions, 2308 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:43:13,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:43:13,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:43:13,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:43:14,010 INFO L124 PetriNetUnfolderBase]: 599/1074 cut-off events. [2024-06-14 15:43:14,011 INFO L125 PetriNetUnfolderBase]: For 108462/108462 co-relation queries the response was YES. [2024-06-14 15:43:14,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6819 conditions, 1074 events. 599/1074 cut-off events. For 108462/108462 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5552 event pairs, 69 based on Foata normal form. 2/1076 useless extension candidates. Maximal degree in co-relation 6685. Up to 1001 conditions per place. [2024-06-14 15:43:14,022 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 214 selfloop transitions, 28 changer transitions 0/244 dead transitions. [2024-06-14 15:43:14,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 244 transitions, 2830 flow [2024-06-14 15:43:14,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:43:14,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:43:14,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 15:43:14,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-14 15:43:14,023 INFO L175 Difference]: Start difference. First operand has 277 places, 230 transitions, 2308 flow. Second operand 10 states and 108 transitions. [2024-06-14 15:43:14,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 244 transitions, 2830 flow [2024-06-14 15:43:14,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 244 transitions, 2691 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-14 15:43:14,327 INFO L231 Difference]: Finished difference. Result has 281 places, 230 transitions, 2230 flow [2024-06-14 15:43:14,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2169, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2230, PETRI_PLACES=281, PETRI_TRANSITIONS=230} [2024-06-14 15:43:14,327 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 250 predicate places. [2024-06-14 15:43:14,327 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 230 transitions, 2230 flow [2024-06-14 15:43:14,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:43:14,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:43:14,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:43:14,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-14 15:43:14,328 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:43:14,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:43:14,328 INFO L85 PathProgramCache]: Analyzing trace with hash 742714820, now seen corresponding path program 19 times [2024-06-14 15:43:14,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:43:14,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052397510] [2024-06-14 15:43:14,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:43:14,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:43:14,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:43:19,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:43:19,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:43:19,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052397510] [2024-06-14 15:43:19,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052397510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:43:19,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:43:19,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:43:19,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515004341] [2024-06-14 15:43:19,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:43:19,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:43:19,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:43:19,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:43:19,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:43:19,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:43:19,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 230 transitions, 2230 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:43:19,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:43:19,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:43:19,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:43:19,666 INFO L124 PetriNetUnfolderBase]: 605/1084 cut-off events. [2024-06-14 15:43:19,666 INFO L125 PetriNetUnfolderBase]: For 109835/109835 co-relation queries the response was YES. [2024-06-14 15:43:19,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6858 conditions, 1084 events. 605/1084 cut-off events. For 109835/109835 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5618 event pairs, 67 based on Foata normal form. 2/1086 useless extension candidates. Maximal degree in co-relation 6722. Up to 976 conditions per place. [2024-06-14 15:43:19,676 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 208 selfloop transitions, 37 changer transitions 0/247 dead transitions. [2024-06-14 15:43:19,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 247 transitions, 3036 flow [2024-06-14 15:43:19,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:43:19,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:43:19,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 15:43:19,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-14 15:43:19,677 INFO L175 Difference]: Start difference. First operand has 281 places, 230 transitions, 2230 flow. Second operand 10 states and 107 transitions. [2024-06-14 15:43:19,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 247 transitions, 3036 flow [2024-06-14 15:43:19,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 247 transitions, 2968 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 15:43:19,977 INFO L231 Difference]: Finished difference. Result has 282 places, 232 transitions, 2311 flow [2024-06-14 15:43:19,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2162, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2311, PETRI_PLACES=282, PETRI_TRANSITIONS=232} [2024-06-14 15:43:19,978 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 251 predicate places. [2024-06-14 15:43:19,978 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 232 transitions, 2311 flow [2024-06-14 15:43:19,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:43:19,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:43:19,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:43:19,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-14 15:43:19,979 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:43:19,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:43:19,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1226411766, now seen corresponding path program 17 times [2024-06-14 15:43:19,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:43:19,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230095394] [2024-06-14 15:43:19,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:43:19,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:43:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:43:24,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:43:24,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:43:24,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230095394] [2024-06-14 15:43:24,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230095394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:43:24,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:43:24,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:43:24,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896976258] [2024-06-14 15:43:24,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:43:24,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:43:24,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:43:24,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:43:24,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:43:24,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:43:24,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 232 transitions, 2311 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:43:24,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:43:24,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:43:24,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:43:24,840 INFO L124 PetriNetUnfolderBase]: 609/1092 cut-off events. [2024-06-14 15:43:24,840 INFO L125 PetriNetUnfolderBase]: For 112113/112113 co-relation queries the response was YES. [2024-06-14 15:43:24,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6940 conditions, 1092 events. 609/1092 cut-off events. For 112113/112113 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5689 event pairs, 79 based on Foata normal form. 2/1094 useless extension candidates. Maximal degree in co-relation 6803. Up to 1050 conditions per place. [2024-06-14 15:43:24,847 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 221 selfloop transitions, 21 changer transitions 0/244 dead transitions. [2024-06-14 15:43:24,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 244 transitions, 2836 flow [2024-06-14 15:43:24,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:43:24,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:43:24,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-14 15:43:24,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-14 15:43:24,848 INFO L175 Difference]: Start difference. First operand has 282 places, 232 transitions, 2311 flow. Second operand 10 states and 100 transitions. [2024-06-14 15:43:24,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 244 transitions, 2836 flow [2024-06-14 15:43:25,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 244 transitions, 2499 flow, removed 34 selfloop flow, removed 11 redundant places. [2024-06-14 15:43:25,162 INFO L231 Difference]: Finished difference. Result has 281 places, 233 transitions, 2039 flow [2024-06-14 15:43:25,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1974, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2039, PETRI_PLACES=281, PETRI_TRANSITIONS=233} [2024-06-14 15:43:25,163 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 250 predicate places. [2024-06-14 15:43:25,163 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 233 transitions, 2039 flow [2024-06-14 15:43:25,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:43:25,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:43:25,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:43:25,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-14 15:43:25,164 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:43:25,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:43:25,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1004766726, now seen corresponding path program 18 times [2024-06-14 15:43:25,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:43:25,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194509126] [2024-06-14 15:43:25,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:43:25,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:43:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:43:29,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:43:29,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:43:29,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194509126] [2024-06-14 15:43:29,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194509126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:43:29,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:43:29,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:43:29,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131867905] [2024-06-14 15:43:29,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:43:29,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:43:29,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:43:29,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:43:29,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:43:29,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:43:29,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 233 transitions, 2039 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:43:29,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:43:29,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:43:29,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:43:30,202 INFO L124 PetriNetUnfolderBase]: 606/1087 cut-off events. [2024-06-14 15:43:30,202 INFO L125 PetriNetUnfolderBase]: For 101900/101900 co-relation queries the response was YES. [2024-06-14 15:43:30,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6304 conditions, 1087 events. 606/1087 cut-off events. For 101900/101900 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5660 event pairs, 77 based on Foata normal form. 2/1089 useless extension candidates. Maximal degree in co-relation 6168. Up to 1054 conditions per place. [2024-06-14 15:43:30,214 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 226 selfloop transitions, 16 changer transitions 0/244 dead transitions. [2024-06-14 15:43:30,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 244 transitions, 2547 flow [2024-06-14 15:43:30,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:43:30,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:43:30,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-14 15:43:30,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.303125 [2024-06-14 15:43:30,215 INFO L175 Difference]: Start difference. First operand has 281 places, 233 transitions, 2039 flow. Second operand 10 states and 97 transitions. [2024-06-14 15:43:30,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 244 transitions, 2547 flow [2024-06-14 15:43:30,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 244 transitions, 2489 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-14 15:43:30,503 INFO L231 Difference]: Finished difference. Result has 283 places, 233 transitions, 2017 flow [2024-06-14 15:43:30,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1981, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2017, PETRI_PLACES=283, PETRI_TRANSITIONS=233} [2024-06-14 15:43:30,504 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 252 predicate places. [2024-06-14 15:43:30,504 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 233 transitions, 2017 flow [2024-06-14 15:43:30,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:43:30,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:43:30,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:43:30,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-14 15:43:30,504 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:43:30,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:43:30,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1864584284, now seen corresponding path program 6 times [2024-06-14 15:43:30,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:43:30,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108701619] [2024-06-14 15:43:30,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:43:30,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:43:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:43:35,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:43:35,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:43:35,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108701619] [2024-06-14 15:43:35,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108701619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:43:35,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:43:35,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:43:35,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114495032] [2024-06-14 15:43:35,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:43:35,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:43:35,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:43:35,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:43:35,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:43:35,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:43:35,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 233 transitions, 2017 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:43:35,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:43:35,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:43:35,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:43:36,314 INFO L124 PetriNetUnfolderBase]: 603/1082 cut-off events. [2024-06-14 15:43:36,315 INFO L125 PetriNetUnfolderBase]: For 92365/92365 co-relation queries the response was YES. [2024-06-14 15:43:36,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6027 conditions, 1082 events. 603/1082 cut-off events. For 92365/92365 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5623 event pairs, 71 based on Foata normal form. 2/1084 useless extension candidates. Maximal degree in co-relation 5890. Up to 1034 conditions per place. [2024-06-14 15:43:36,325 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 223 selfloop transitions, 21 changer transitions 0/246 dead transitions. [2024-06-14 15:43:36,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 246 transitions, 2537 flow [2024-06-14 15:43:36,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:43:36,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:43:36,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-14 15:43:36,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.315625 [2024-06-14 15:43:36,326 INFO L175 Difference]: Start difference. First operand has 283 places, 233 transitions, 2017 flow. Second operand 10 states and 101 transitions. [2024-06-14 15:43:36,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 246 transitions, 2537 flow [2024-06-14 15:43:36,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 246 transitions, 2433 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-14 15:43:36,585 INFO L231 Difference]: Finished difference. Result has 284 places, 233 transitions, 1959 flow [2024-06-14 15:43:36,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1913, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1959, PETRI_PLACES=284, PETRI_TRANSITIONS=233} [2024-06-14 15:43:36,586 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-14 15:43:36,586 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 233 transitions, 1959 flow [2024-06-14 15:43:36,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:43:36,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:43:36,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:43:36,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-14 15:43:36,586 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:43:36,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:43:36,586 INFO L85 PathProgramCache]: Analyzing trace with hash -2082866322, now seen corresponding path program 20 times [2024-06-14 15:43:36,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:43:36,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875521113] [2024-06-14 15:43:36,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:43:36,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:43:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:43:41,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:43:41,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:43:41,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875521113] [2024-06-14 15:43:41,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875521113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:43:41,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:43:41,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:43:41,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970586811] [2024-06-14 15:43:41,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:43:41,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:43:41,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:43:41,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:43:41,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:43:41,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:43:41,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 233 transitions, 1959 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:43:41,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:43:41,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:43:41,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:43:42,112 INFO L124 PetriNetUnfolderBase]: 599/1076 cut-off events. [2024-06-14 15:43:42,112 INFO L125 PetriNetUnfolderBase]: For 82563/82563 co-relation queries the response was YES. [2024-06-14 15:43:42,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5707 conditions, 1076 events. 599/1076 cut-off events. For 82563/82563 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5609 event pairs, 67 based on Foata normal form. 2/1078 useless extension candidates. Maximal degree in co-relation 5569. Up to 998 conditions per place. [2024-06-14 15:43:42,121 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 217 selfloop transitions, 28 changer transitions 0/247 dead transitions. [2024-06-14 15:43:42,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 247 transitions, 2487 flow [2024-06-14 15:43:42,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:43:42,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:43:42,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 15:43:42,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-14 15:43:42,122 INFO L175 Difference]: Start difference. First operand has 284 places, 233 transitions, 1959 flow. Second operand 10 states and 106 transitions. [2024-06-14 15:43:42,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 247 transitions, 2487 flow [2024-06-14 15:43:42,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 247 transitions, 2358 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-14 15:43:42,386 INFO L231 Difference]: Finished difference. Result has 285 places, 233 transitions, 1891 flow [2024-06-14 15:43:42,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1830, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1891, PETRI_PLACES=285, PETRI_TRANSITIONS=233} [2024-06-14 15:43:42,387 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-14 15:43:42,387 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 233 transitions, 1891 flow [2024-06-14 15:43:42,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 15:43:42,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:43:42,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:43:42,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-14 15:43:42,387 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:43:42,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:43:42,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1445799716, now seen corresponding path program 1 times [2024-06-14 15:43:42,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:43:42,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117755014] [2024-06-14 15:43:42,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:43:42,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:43:42,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:43:48,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:43:48,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:43:48,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117755014] [2024-06-14 15:43:48,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117755014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:43:48,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:43:48,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:43:48,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707217316] [2024-06-14 15:43:48,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:43:48,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:43:48,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:43:48,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:43:48,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:43:48,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:43:48,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 233 transitions, 1891 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:43:48,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:43:48,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:43:48,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:43:48,587 INFO L124 PetriNetUnfolderBase]: 633/1150 cut-off events. [2024-06-14 15:43:48,587 INFO L125 PetriNetUnfolderBase]: For 163308/163308 co-relation queries the response was YES. [2024-06-14 15:43:48,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6716 conditions, 1150 events. 633/1150 cut-off events. For 163308/163308 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6028 event pairs, 91 based on Foata normal form. 8/1158 useless extension candidates. Maximal degree in co-relation 6578. Up to 570 conditions per place. [2024-06-14 15:43:48,597 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 149 selfloop transitions, 90 changer transitions 18/259 dead transitions. [2024-06-14 15:43:48,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 259 transitions, 2717 flow [2024-06-14 15:43:48,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:43:48,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:43:48,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-14 15:43:48,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-14 15:43:48,598 INFO L175 Difference]: Start difference. First operand has 285 places, 233 transitions, 1891 flow. Second operand 10 states and 117 transitions. [2024-06-14 15:43:48,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 259 transitions, 2717 flow [2024-06-14 15:43:49,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 259 transitions, 2598 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 15:43:49,013 INFO L231 Difference]: Finished difference. Result has 285 places, 229 transitions, 1934 flow [2024-06-14 15:43:49,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1772, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1934, PETRI_PLACES=285, PETRI_TRANSITIONS=229} [2024-06-14 15:43:49,014 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-14 15:43:49,014 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 229 transitions, 1934 flow [2024-06-14 15:43:49,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:43:49,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:43:49,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:43:49,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-14 15:43:49,014 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:43:49,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:43:49,014 INFO L85 PathProgramCache]: Analyzing trace with hash 358641154, now seen corresponding path program 2 times [2024-06-14 15:43:49,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:43:49,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085802382] [2024-06-14 15:43:49,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:43:49,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:43:49,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:43:53,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:43:53,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:43:53,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085802382] [2024-06-14 15:43:53,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085802382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:43:53,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:43:53,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:43:53,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869203672] [2024-06-14 15:43:53,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:43:53,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:43:53,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:43:53,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:43:53,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:43:53,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:43:53,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 229 transitions, 1934 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:43:53,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:43:53,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:43:53,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:43:54,381 INFO L124 PetriNetUnfolderBase]: 646/1181 cut-off events. [2024-06-14 15:43:54,381 INFO L125 PetriNetUnfolderBase]: For 225810/225810 co-relation queries the response was YES. [2024-06-14 15:43:54,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7944 conditions, 1181 events. 646/1181 cut-off events. For 225810/225810 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6189 event pairs, 98 based on Foata normal form. 8/1189 useless extension candidates. Maximal degree in co-relation 7806. Up to 589 conditions per place. [2024-06-14 15:43:54,391 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 137 selfloop transitions, 104 changer transitions 13/256 dead transitions. [2024-06-14 15:43:54,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 256 transitions, 2740 flow [2024-06-14 15:43:54,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:43:54,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:43:54,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-14 15:43:54,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-14 15:43:54,392 INFO L175 Difference]: Start difference. First operand has 285 places, 229 transitions, 1934 flow. Second operand 10 states and 131 transitions. [2024-06-14 15:43:54,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 256 transitions, 2740 flow [2024-06-14 15:43:54,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 256 transitions, 2625 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 15:43:54,904 INFO L231 Difference]: Finished difference. Result has 280 places, 226 transitions, 2020 flow [2024-06-14 15:43:54,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1827, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2020, PETRI_PLACES=280, PETRI_TRANSITIONS=226} [2024-06-14 15:43:54,904 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 249 predicate places. [2024-06-14 15:43:54,905 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 226 transitions, 2020 flow [2024-06-14 15:43:54,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:43:54,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:43:54,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:43:54,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-14 15:43:54,905 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:43:54,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:43:54,905 INFO L85 PathProgramCache]: Analyzing trace with hash 213087132, now seen corresponding path program 3 times [2024-06-14 15:43:54,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:43:54,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130244331] [2024-06-14 15:43:54,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:43:54,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:43:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:43:59,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:43:59,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:43:59,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130244331] [2024-06-14 15:43:59,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130244331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:43:59,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:43:59,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:43:59,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684795652] [2024-06-14 15:43:59,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:43:59,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:43:59,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:43:59,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:43:59,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:43:59,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:43:59,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 226 transitions, 2020 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:43:59,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:43:59,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:43:59,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:44:00,068 INFO L124 PetriNetUnfolderBase]: 636/1163 cut-off events. [2024-06-14 15:44:00,069 INFO L125 PetriNetUnfolderBase]: For 213768/213768 co-relation queries the response was YES. [2024-06-14 15:44:00,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8048 conditions, 1163 events. 636/1163 cut-off events. For 213768/213768 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6079 event pairs, 94 based on Foata normal form. 8/1171 useless extension candidates. Maximal degree in co-relation 7913. Up to 589 conditions per place. [2024-06-14 15:44:00,081 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 135 selfloop transitions, 105 changer transitions 10/252 dead transitions. [2024-06-14 15:44:00,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 252 transitions, 2810 flow [2024-06-14 15:44:00,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:44:00,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:44:00,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-14 15:44:00,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 15:44:00,083 INFO L175 Difference]: Start difference. First operand has 280 places, 226 transitions, 2020 flow. Second operand 10 states and 130 transitions. [2024-06-14 15:44:00,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 252 transitions, 2810 flow [2024-06-14 15:44:00,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 252 transitions, 2586 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 15:44:00,698 INFO L231 Difference]: Finished difference. Result has 276 places, 224 transitions, 2000 flow [2024-06-14 15:44:00,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1800, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2000, PETRI_PLACES=276, PETRI_TRANSITIONS=224} [2024-06-14 15:44:00,698 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2024-06-14 15:44:00,699 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 224 transitions, 2000 flow [2024-06-14 15:44:00,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:44:00,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:44:00,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:44:00,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-14 15:44:00,699 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:44:00,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:44:00,699 INFO L85 PathProgramCache]: Analyzing trace with hash 358790884, now seen corresponding path program 4 times [2024-06-14 15:44:00,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:44:00,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762614208] [2024-06-14 15:44:00,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:44:00,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:44:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:44:05,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:44:05,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:44:05,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762614208] [2024-06-14 15:44:05,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762614208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:44:05,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:44:05,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:44:05,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892928990] [2024-06-14 15:44:05,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:44:05,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:44:05,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:44:05,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:44:05,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:44:05,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:44:05,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 224 transitions, 2000 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:44:05,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:44:05,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:44:05,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:44:05,978 INFO L124 PetriNetUnfolderBase]: 605/1102 cut-off events. [2024-06-14 15:44:05,978 INFO L125 PetriNetUnfolderBase]: For 165629/165629 co-relation queries the response was YES. [2024-06-14 15:44:05,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6805 conditions, 1102 events. 605/1102 cut-off events. For 165629/165629 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5710 event pairs, 87 based on Foata normal form. 10/1112 useless extension candidates. Maximal degree in co-relation 6671. Up to 589 conditions per place. [2024-06-14 15:44:05,985 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 129 selfloop transitions, 101 changer transitions 13/245 dead transitions. [2024-06-14 15:44:05,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 245 transitions, 2548 flow [2024-06-14 15:44:05,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:44:05,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:44:05,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-14 15:44:05,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-14 15:44:05,986 INFO L175 Difference]: Start difference. First operand has 276 places, 224 transitions, 2000 flow. Second operand 10 states and 126 transitions. [2024-06-14 15:44:05,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 245 transitions, 2548 flow [2024-06-14 15:44:06,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 245 transitions, 2334 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 15:44:06,348 INFO L231 Difference]: Finished difference. Result has 274 places, 218 transitions, 1954 flow [2024-06-14 15:44:06,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1786, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1954, PETRI_PLACES=274, PETRI_TRANSITIONS=218} [2024-06-14 15:44:06,349 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-06-14 15:44:06,349 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 218 transitions, 1954 flow [2024-06-14 15:44:06,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:44:06,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:44:06,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:44:06,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-14 15:44:06,350 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:44:06,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:44:06,350 INFO L85 PathProgramCache]: Analyzing trace with hash 355066234, now seen corresponding path program 5 times [2024-06-14 15:44:06,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:44:06,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313244575] [2024-06-14 15:44:06,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:44:06,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:44:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:44:11,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:44:11,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:44:11,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313244575] [2024-06-14 15:44:11,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313244575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:44:11,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:44:11,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:44:11,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219542379] [2024-06-14 15:44:11,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:44:11,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:44:11,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:44:11,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:44:11,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:44:11,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:44:11,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 218 transitions, 1954 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:44:11,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:44:11,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:44:11,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:44:11,812 INFO L124 PetriNetUnfolderBase]: 618/1133 cut-off events. [2024-06-14 15:44:11,812 INFO L125 PetriNetUnfolderBase]: For 205766/205766 co-relation queries the response was YES. [2024-06-14 15:44:11,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7870 conditions, 1133 events. 618/1133 cut-off events. For 205766/205766 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5892 event pairs, 94 based on Foata normal form. 8/1141 useless extension candidates. Maximal degree in co-relation 7737. Up to 493 conditions per place. [2024-06-14 15:44:11,823 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 132 selfloop transitions, 91 changer transitions 20/245 dead transitions. [2024-06-14 15:44:11,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 245 transitions, 2726 flow [2024-06-14 15:44:11,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:44:11,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:44:11,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 15:44:11,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-14 15:44:11,824 INFO L175 Difference]: Start difference. First operand has 274 places, 218 transitions, 1954 flow. Second operand 10 states and 127 transitions. [2024-06-14 15:44:11,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 245 transitions, 2726 flow [2024-06-14 15:44:12,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 245 transitions, 2495 flow, removed 2 selfloop flow, removed 15 redundant places. [2024-06-14 15:44:12,389 INFO L231 Difference]: Finished difference. Result has 269 places, 210 transitions, 1858 flow [2024-06-14 15:44:12,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1725, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1858, PETRI_PLACES=269, PETRI_TRANSITIONS=210} [2024-06-14 15:44:12,389 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-14 15:44:12,390 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 210 transitions, 1858 flow [2024-06-14 15:44:12,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:44:12,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:44:12,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:44:12,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-14 15:44:12,390 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:44:12,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:44:12,391 INFO L85 PathProgramCache]: Analyzing trace with hash -2085633286, now seen corresponding path program 6 times [2024-06-14 15:44:12,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:44:12,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344737768] [2024-06-14 15:44:12,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:44:12,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:44:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:44:17,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:44:17,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:44:17,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344737768] [2024-06-14 15:44:17,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344737768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:44:17,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:44:17,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:44:17,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661555745] [2024-06-14 15:44:17,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:44:17,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:44:17,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:44:17,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:44:17,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:44:17,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:44:17,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 210 transitions, 1858 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:44:17,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:44:17,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:44:17,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:44:17,913 INFO L124 PetriNetUnfolderBase]: 600/1099 cut-off events. [2024-06-14 15:44:17,913 INFO L125 PetriNetUnfolderBase]: For 216492/216492 co-relation queries the response was YES. [2024-06-14 15:44:17,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7686 conditions, 1099 events. 600/1099 cut-off events. For 216492/216492 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5668 event pairs, 86 based on Foata normal form. 10/1109 useless extension candidates. Maximal degree in co-relation 7555. Up to 821 conditions per place. [2024-06-14 15:44:17,922 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 158 selfloop transitions, 58 changer transitions 14/232 dead transitions. [2024-06-14 15:44:17,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 232 transitions, 2382 flow [2024-06-14 15:44:17,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 15:44:17,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 15:44:17,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-14 15:44:17,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-14 15:44:17,923 INFO L175 Difference]: Start difference. First operand has 269 places, 210 transitions, 1858 flow. Second operand 11 states and 125 transitions. [2024-06-14 15:44:17,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 232 transitions, 2382 flow [2024-06-14 15:44:18,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 232 transitions, 2186 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-14 15:44:18,302 INFO L231 Difference]: Finished difference. Result has 258 places, 207 transitions, 1761 flow [2024-06-14 15:44:18,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1662, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1761, PETRI_PLACES=258, PETRI_TRANSITIONS=207} [2024-06-14 15:44:18,302 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-14 15:44:18,302 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 207 transitions, 1761 flow [2024-06-14 15:44:18,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:44:18,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:44:18,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:44:18,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-14 15:44:18,303 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:44:18,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:44:18,303 INFO L85 PathProgramCache]: Analyzing trace with hash 747276724, now seen corresponding path program 7 times [2024-06-14 15:44:18,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:44:18,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403943138] [2024-06-14 15:44:18,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:44:18,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:44:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:44:23,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:44:23,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:44:23,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403943138] [2024-06-14 15:44:23,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403943138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:44:23,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:44:23,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:44:23,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996081018] [2024-06-14 15:44:23,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:44:23,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:44:23,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:44:23,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:44:23,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:44:23,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:44:23,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 207 transitions, 1761 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:44:23,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:44:23,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:44:23,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:44:23,834 INFO L124 PetriNetUnfolderBase]: 561/1026 cut-off events. [2024-06-14 15:44:23,834 INFO L125 PetriNetUnfolderBase]: For 144144/144144 co-relation queries the response was YES. [2024-06-14 15:44:23,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6232 conditions, 1026 events. 561/1026 cut-off events. For 144144/144144 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5222 event pairs, 67 based on Foata normal form. 10/1036 useless extension candidates. Maximal degree in co-relation 6107. Up to 747 conditions per place. [2024-06-14 15:44:23,843 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 155 selfloop transitions, 58 changer transitions 14/229 dead transitions. [2024-06-14 15:44:23,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 229 transitions, 2279 flow [2024-06-14 15:44:23,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 15:44:23,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 15:44:23,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-14 15:44:23,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-14 15:44:23,844 INFO L175 Difference]: Start difference. First operand has 258 places, 207 transitions, 1761 flow. Second operand 11 states and 125 transitions. [2024-06-14 15:44:23,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 229 transitions, 2279 flow [2024-06-14 15:44:24,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 229 transitions, 2159 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 15:44:24,156 INFO L231 Difference]: Finished difference. Result has 256 places, 204 transitions, 1742 flow [2024-06-14 15:44:24,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1641, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1742, PETRI_PLACES=256, PETRI_TRANSITIONS=204} [2024-06-14 15:44:24,157 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2024-06-14 15:44:24,157 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 204 transitions, 1742 flow [2024-06-14 15:44:24,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:44:24,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:44:24,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:44:24,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-14 15:44:24,157 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:44:24,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:44:24,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1386313780, now seen corresponding path program 8 times [2024-06-14 15:44:24,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:44:24,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979621229] [2024-06-14 15:44:24,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:44:24,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:44:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:44:29,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:44:29,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:44:29,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979621229] [2024-06-14 15:44:29,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979621229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:44:29,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:44:29,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:44:29,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683285152] [2024-06-14 15:44:29,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:44:29,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:44:29,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:44:29,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:44:29,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:44:30,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:44:30,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 204 transitions, 1742 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:44:30,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:44:30,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:44:30,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:44:30,625 INFO L124 PetriNetUnfolderBase]: 549/1006 cut-off events. [2024-06-14 15:44:30,625 INFO L125 PetriNetUnfolderBase]: For 131920/131920 co-relation queries the response was YES. [2024-06-14 15:44:30,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6137 conditions, 1006 events. 549/1006 cut-off events. For 131920/131920 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5100 event pairs, 79 based on Foata normal form. 8/1014 useless extension candidates. Maximal degree in co-relation 6013. Up to 531 conditions per place. [2024-06-14 15:44:30,633 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 122 selfloop transitions, 90 changer transitions 13/227 dead transitions. [2024-06-14 15:44:30,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 227 transitions, 2254 flow [2024-06-14 15:44:30,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 15:44:30,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 15:44:30,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 15:44:30,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-14 15:44:30,634 INFO L175 Difference]: Start difference. First operand has 256 places, 204 transitions, 1742 flow. Second operand 11 states and 131 transitions. [2024-06-14 15:44:30,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 227 transitions, 2254 flow [2024-06-14 15:44:30,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 227 transitions, 2134 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 15:44:30,882 INFO L231 Difference]: Finished difference. Result has 254 places, 201 transitions, 1786 flow [2024-06-14 15:44:30,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1622, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1786, PETRI_PLACES=254, PETRI_TRANSITIONS=201} [2024-06-14 15:44:30,883 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-14 15:44:30,883 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 201 transitions, 1786 flow [2024-06-14 15:44:30,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:44:30,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:44:30,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:44:30,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-14 15:44:30,884 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:44:30,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:44:30,884 INFO L85 PathProgramCache]: Analyzing trace with hash -2091347206, now seen corresponding path program 9 times [2024-06-14 15:44:30,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:44:30,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544019413] [2024-06-14 15:44:30,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:44:30,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:44:30,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:44:35,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:44:35,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:44:35,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544019413] [2024-06-14 15:44:35,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544019413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:44:35,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:44:35,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:44:35,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750061281] [2024-06-14 15:44:35,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:44:35,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:44:35,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:44:35,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:44:35,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:44:35,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:44:35,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 201 transitions, 1786 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:44:35,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:44:35,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:44:35,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:44:36,084 INFO L124 PetriNetUnfolderBase]: 571/1052 cut-off events. [2024-06-14 15:44:36,084 INFO L125 PetriNetUnfolderBase]: For 175264/175264 co-relation queries the response was YES. [2024-06-14 15:44:36,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7266 conditions, 1052 events. 571/1052 cut-off events. For 175264/175264 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5396 event pairs, 74 based on Foata normal form. 8/1060 useless extension candidates. Maximal degree in co-relation 7143. Up to 691 conditions per place. [2024-06-14 15:44:36,093 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 156 selfloop transitions, 57 changer transitions 13/228 dead transitions. [2024-06-14 15:44:36,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 228 transitions, 2510 flow [2024-06-14 15:44:36,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:44:36,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:44:36,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-14 15:44:36,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-14 15:44:36,094 INFO L175 Difference]: Start difference. First operand has 254 places, 201 transitions, 1786 flow. Second operand 10 states and 125 transitions. [2024-06-14 15:44:36,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 228 transitions, 2510 flow [2024-06-14 15:44:36,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 228 transitions, 2318 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 15:44:36,474 INFO L231 Difference]: Finished difference. Result has 249 places, 198 transitions, 1699 flow [2024-06-14 15:44:36,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1699, PETRI_PLACES=249, PETRI_TRANSITIONS=198} [2024-06-14 15:44:36,474 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-14 15:44:36,474 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 198 transitions, 1699 flow [2024-06-14 15:44:36,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:44:36,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:44:36,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:44:36,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-14 15:44:36,475 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:44:36,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:44:36,475 INFO L85 PathProgramCache]: Analyzing trace with hash -2091197476, now seen corresponding path program 10 times [2024-06-14 15:44:36,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:44:36,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912357175] [2024-06-14 15:44:36,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:44:36,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:44:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:44:41,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:44:41,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:44:41,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912357175] [2024-06-14 15:44:41,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912357175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:44:41,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:44:41,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:44:41,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565215551] [2024-06-14 15:44:41,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:44:41,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:44:41,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:44:41,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:44:41,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:44:41,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:44:41,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 198 transitions, 1699 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:44:41,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:44:41,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:44:41,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:44:42,027 INFO L124 PetriNetUnfolderBase]: 558/1029 cut-off events. [2024-06-14 15:44:42,027 INFO L125 PetriNetUnfolderBase]: For 168086/168086 co-relation queries the response was YES. [2024-06-14 15:44:42,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6858 conditions, 1029 events. 558/1029 cut-off events. For 168086/168086 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5257 event pairs, 83 based on Foata normal form. 10/1039 useless extension candidates. Maximal degree in co-relation 6737. Up to 747 conditions per place. [2024-06-14 15:44:42,035 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 147 selfloop transitions, 56 changer transitions 14/219 dead transitions. [2024-06-14 15:44:42,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 219 transitions, 2195 flow [2024-06-14 15:44:42,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:44:42,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:44:42,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-14 15:44:42,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-14 15:44:42,036 INFO L175 Difference]: Start difference. First operand has 249 places, 198 transitions, 1699 flow. Second operand 10 states and 117 transitions. [2024-06-14 15:44:42,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 219 transitions, 2195 flow [2024-06-14 15:44:42,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 219 transitions, 2078 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 15:44:42,377 INFO L231 Difference]: Finished difference. Result has 246 places, 195 transitions, 1677 flow [2024-06-14 15:44:42,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1677, PETRI_PLACES=246, PETRI_TRANSITIONS=195} [2024-06-14 15:44:42,377 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 215 predicate places. [2024-06-14 15:44:42,377 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 195 transitions, 1677 flow [2024-06-14 15:44:42,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:44:42,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:44:42,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:44:42,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-14 15:44:42,378 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:44:42,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:44:42,378 INFO L85 PathProgramCache]: Analyzing trace with hash 887606936, now seen corresponding path program 11 times [2024-06-14 15:44:42,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:44:42,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576569120] [2024-06-14 15:44:42,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:44:42,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:44:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:44:47,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:44:47,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:44:47,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576569120] [2024-06-14 15:44:47,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576569120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:44:47,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:44:47,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:44:47,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206568768] [2024-06-14 15:44:47,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:44:47,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:44:47,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:44:47,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:44:47,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:44:47,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:44:47,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 195 transitions, 1677 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:44:47,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:44:47,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:44:47,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:44:47,754 INFO L124 PetriNetUnfolderBase]: 524/963 cut-off events. [2024-06-14 15:44:47,754 INFO L125 PetriNetUnfolderBase]: For 118698/118698 co-relation queries the response was YES. [2024-06-14 15:44:47,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5880 conditions, 963 events. 524/963 cut-off events. For 118698/118698 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4810 event pairs, 61 based on Foata normal form. 8/971 useless extension candidates. Maximal degree in co-relation 5761. Up to 691 conditions per place. [2024-06-14 15:44:47,761 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 144 selfloop transitions, 53 changer transitions 16/215 dead transitions. [2024-06-14 15:44:47,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 215 transitions, 2157 flow [2024-06-14 15:44:47,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:44:47,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:44:47,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-14 15:44:47,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-14 15:44:47,762 INFO L175 Difference]: Start difference. First operand has 246 places, 195 transitions, 1677 flow. Second operand 10 states and 114 transitions. [2024-06-14 15:44:47,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 215 transitions, 2157 flow [2024-06-14 15:44:47,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 215 transitions, 2041 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 15:44:47,987 INFO L231 Difference]: Finished difference. Result has 244 places, 191 transitions, 1646 flow [2024-06-14 15:44:47,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1561, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1646, PETRI_PLACES=244, PETRI_TRANSITIONS=191} [2024-06-14 15:44:47,987 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-14 15:44:47,987 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 191 transitions, 1646 flow [2024-06-14 15:44:47,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:44:47,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:44:47,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:44:47,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-14 15:44:47,988 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:44:47,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:44:47,988 INFO L85 PathProgramCache]: Analyzing trace with hash 581227518, now seen corresponding path program 12 times [2024-06-14 15:44:47,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:44:47,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137772886] [2024-06-14 15:44:47,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:44:47,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:44:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:44:52,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:44:52,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:44:52,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137772886] [2024-06-14 15:44:52,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137772886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:44:52,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:44:52,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:44:52,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191137458] [2024-06-14 15:44:52,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:44:52,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:44:52,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:44:52,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:44:52,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:44:52,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:44:52,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 191 transitions, 1646 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:44:52,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:44:52,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:44:52,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:44:53,078 INFO L124 PetriNetUnfolderBase]: 538/993 cut-off events. [2024-06-14 15:44:53,078 INFO L125 PetriNetUnfolderBase]: For 149540/149540 co-relation queries the response was YES. [2024-06-14 15:44:53,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6715 conditions, 993 events. 538/993 cut-off events. For 149540/149540 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4988 event pairs, 71 based on Foata normal form. 8/1001 useless extension candidates. Maximal degree in co-relation 6597. Up to 362 conditions per place. [2024-06-14 15:44:53,085 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 111 selfloop transitions, 91 changer transitions 16/220 dead transitions. [2024-06-14 15:44:53,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 220 transitions, 2370 flow [2024-06-14 15:44:53,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:44:53,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:44:53,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-14 15:44:53,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-14 15:44:53,086 INFO L175 Difference]: Start difference. First operand has 244 places, 191 transitions, 1646 flow. Second operand 10 states and 122 transitions. [2024-06-14 15:44:53,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 220 transitions, 2370 flow [2024-06-14 15:44:53,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 220 transitions, 2248 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-14 15:44:53,317 INFO L231 Difference]: Finished difference. Result has 237 places, 187 transitions, 1691 flow [2024-06-14 15:44:53,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1532, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1691, PETRI_PLACES=237, PETRI_TRANSITIONS=187} [2024-06-14 15:44:53,318 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-14 15:44:53,318 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 187 transitions, 1691 flow [2024-06-14 15:44:53,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:44:53,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:44:53,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:44:53,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-14 15:44:53,318 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:44:53,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:44:53,319 INFO L85 PathProgramCache]: Analyzing trace with hash 730650340, now seen corresponding path program 13 times [2024-06-14 15:44:53,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:44:53,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580350843] [2024-06-14 15:44:53,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:44:53,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:44:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:44:58,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:44:58,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:44:58,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580350843] [2024-06-14 15:44:58,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580350843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:44:58,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:44:58,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:44:58,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293314471] [2024-06-14 15:44:58,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:44:58,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:44:58,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:44:58,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:44:58,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:44:58,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:44:58,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 187 transitions, 1691 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:44:58,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:44:58,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:44:58,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:44:58,969 INFO L124 PetriNetUnfolderBase]: 520/957 cut-off events. [2024-06-14 15:44:58,969 INFO L125 PetriNetUnfolderBase]: For 147725/147725 co-relation queries the response was YES. [2024-06-14 15:44:58,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6597 conditions, 957 events. 520/957 cut-off events. For 147725/147725 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4783 event pairs, 69 based on Foata normal form. 10/967 useless extension candidates. Maximal degree in co-relation 6482. Up to 505 conditions per place. [2024-06-14 15:44:58,976 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 85 selfloop transitions, 112 changer transitions 14/213 dead transitions. [2024-06-14 15:44:58,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 213 transitions, 2189 flow [2024-06-14 15:44:58,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 15:44:58,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 15:44:58,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 15:44:58,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-14 15:44:58,977 INFO L175 Difference]: Start difference. First operand has 237 places, 187 transitions, 1691 flow. Second operand 11 states and 131 transitions. [2024-06-14 15:44:58,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 213 transitions, 2189 flow [2024-06-14 15:44:59,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 213 transitions, 2058 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 15:44:59,231 INFO L231 Difference]: Finished difference. Result has 233 places, 184 transitions, 1762 flow [2024-06-14 15:44:59,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1762, PETRI_PLACES=233, PETRI_TRANSITIONS=184} [2024-06-14 15:44:59,232 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-14 15:44:59,232 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 184 transitions, 1762 flow [2024-06-14 15:44:59,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:44:59,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:44:59,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:44:59,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-14 15:44:59,232 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:44:59,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:44:59,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1548638336, now seen corresponding path program 14 times [2024-06-14 15:44:59,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:44:59,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866021319] [2024-06-14 15:44:59,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:44:59,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:44:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:45:03,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:45:03,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:45:03,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866021319] [2024-06-14 15:45:03,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866021319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:45:03,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:45:03,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:45:03,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857286948] [2024-06-14 15:45:03,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:45:03,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:45:03,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:45:03,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:45:03,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:45:03,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:45:03,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 184 transitions, 1762 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:45:03,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:45:03,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:45:03,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:45:04,218 INFO L124 PetriNetUnfolderBase]: 515/950 cut-off events. [2024-06-14 15:45:04,218 INFO L125 PetriNetUnfolderBase]: For 138362/138362 co-relation queries the response was YES. [2024-06-14 15:45:04,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6925 conditions, 950 events. 515/950 cut-off events. For 138362/138362 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4734 event pairs, 76 based on Foata normal form. 8/958 useless extension candidates. Maximal degree in co-relation 6813. Up to 499 conditions per place. [2024-06-14 15:45:04,226 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 102 selfloop transitions, 95 changer transitions 9/208 dead transitions. [2024-06-14 15:45:04,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 208 transitions, 2436 flow [2024-06-14 15:45:04,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:45:04,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:45:04,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-14 15:45:04,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-14 15:45:04,227 INFO L175 Difference]: Start difference. First operand has 233 places, 184 transitions, 1762 flow. Second operand 10 states and 122 transitions. [2024-06-14 15:45:04,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 208 transitions, 2436 flow [2024-06-14 15:45:04,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 208 transitions, 2104 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-14 15:45:04,505 INFO L231 Difference]: Finished difference. Result has 229 places, 182 transitions, 1638 flow [2024-06-14 15:45:04,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1432, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1638, PETRI_PLACES=229, PETRI_TRANSITIONS=182} [2024-06-14 15:45:04,505 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 198 predicate places. [2024-06-14 15:45:04,505 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 182 transitions, 1638 flow [2024-06-14 15:45:04,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:45:04,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:45:04,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:45:04,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-14 15:45:04,506 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:45:04,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:45:04,507 INFO L85 PathProgramCache]: Analyzing trace with hash 133054424, now seen corresponding path program 15 times [2024-06-14 15:45:04,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:45:04,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750622015] [2024-06-14 15:45:04,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:45:04,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:45:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:45:09,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:45:09,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:45:09,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750622015] [2024-06-14 15:45:09,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750622015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:45:09,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:45:09,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:45:09,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675105154] [2024-06-14 15:45:09,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:45:09,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:45:09,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:45:09,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:45:09,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:45:09,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:45:09,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 182 transitions, 1638 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:45:09,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:45:09,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:45:09,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:45:10,151 INFO L124 PetriNetUnfolderBase]: 508/937 cut-off events. [2024-06-14 15:45:10,151 INFO L125 PetriNetUnfolderBase]: For 138299/138299 co-relation queries the response was YES. [2024-06-14 15:45:10,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6679 conditions, 937 events. 508/937 cut-off events. For 138299/138299 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4651 event pairs, 74 based on Foata normal form. 8/945 useless extension candidates. Maximal degree in co-relation 6568. Up to 481 conditions per place. [2024-06-14 15:45:10,159 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 99 selfloop transitions, 92 changer transitions 13/206 dead transitions. [2024-06-14 15:45:10,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 206 transitions, 2280 flow [2024-06-14 15:45:10,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:45:10,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:45:10,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-14 15:45:10,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-14 15:45:10,160 INFO L175 Difference]: Start difference. First operand has 229 places, 182 transitions, 1638 flow. Second operand 10 states and 122 transitions. [2024-06-14 15:45:10,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 206 transitions, 2280 flow [2024-06-14 15:45:10,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 206 transitions, 2058 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-14 15:45:10,412 INFO L231 Difference]: Finished difference. Result has 227 places, 177 transitions, 1574 flow [2024-06-14 15:45:10,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1418, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1574, PETRI_PLACES=227, PETRI_TRANSITIONS=177} [2024-06-14 15:45:10,413 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-14 15:45:10,413 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 177 transitions, 1574 flow [2024-06-14 15:45:10,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:45:10,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:45:10,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:45:10,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-14 15:45:10,413 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:45:10,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:45:10,413 INFO L85 PathProgramCache]: Analyzing trace with hash 874535290, now seen corresponding path program 16 times [2024-06-14 15:45:10,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:45:10,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235632612] [2024-06-14 15:45:10,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:45:10,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:45:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:45:15,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:45:15,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:45:15,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235632612] [2024-06-14 15:45:15,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235632612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:45:15,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:45:15,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:45:15,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047617946] [2024-06-14 15:45:15,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:45:15,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:45:15,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:45:15,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:45:15,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:45:15,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:45:15,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 177 transitions, 1574 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:45:15,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:45:15,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:45:15,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:45:16,224 INFO L124 PetriNetUnfolderBase]: 521/963 cut-off events. [2024-06-14 15:45:16,224 INFO L125 PetriNetUnfolderBase]: For 172773/172773 co-relation queries the response was YES. [2024-06-14 15:45:16,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7517 conditions, 963 events. 521/963 cut-off events. For 172773/172773 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4831 event pairs, 81 based on Foata normal form. 8/971 useless extension candidates. Maximal degree in co-relation 7406. Up to 609 conditions per place. [2024-06-14 15:45:16,233 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 127 selfloop transitions, 69 changer transitions 7/205 dead transitions. [2024-06-14 15:45:16,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 205 transitions, 2234 flow [2024-06-14 15:45:16,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 15:45:16,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 15:45:16,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 15:45:16,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-14 15:45:16,234 INFO L175 Difference]: Start difference. First operand has 227 places, 177 transitions, 1574 flow. Second operand 11 states and 131 transitions. [2024-06-14 15:45:16,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 205 transitions, 2234 flow [2024-06-14 15:45:16,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 205 transitions, 2036 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 15:45:16,641 INFO L231 Difference]: Finished difference. Result has 222 places, 175 transitions, 1508 flow [2024-06-14 15:45:16,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1508, PETRI_PLACES=222, PETRI_TRANSITIONS=175} [2024-06-14 15:45:16,641 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 191 predicate places. [2024-06-14 15:45:16,641 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 175 transitions, 1508 flow [2024-06-14 15:45:16,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:45:16,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:45:16,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:45:16,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-14 15:45:16,643 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:45:16,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:45:16,644 INFO L85 PathProgramCache]: Analyzing trace with hash 874742680, now seen corresponding path program 17 times [2024-06-14 15:45:16,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:45:16,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420907319] [2024-06-14 15:45:16,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:45:16,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:45:16,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:45:21,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:45:21,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:45:21,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420907319] [2024-06-14 15:45:21,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420907319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:45:21,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:45:21,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:45:21,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796122910] [2024-06-14 15:45:21,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:45:21,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:45:21,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:45:21,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:45:21,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:45:21,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:45:21,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 175 transitions, 1508 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:45:21,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:45:21,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:45:21,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:45:22,638 INFO L124 PetriNetUnfolderBase]: 519/961 cut-off events. [2024-06-14 15:45:22,638 INFO L125 PetriNetUnfolderBase]: For 177212/177212 co-relation queries the response was YES. [2024-06-14 15:45:22,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7398 conditions, 961 events. 519/961 cut-off events. For 177212/177212 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4845 event pairs, 87 based on Foata normal form. 10/971 useless extension candidates. Maximal degree in co-relation 7288. Up to 683 conditions per place. [2024-06-14 15:45:22,646 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 120 selfloop transitions, 65 changer transitions 11/198 dead transitions. [2024-06-14 15:45:22,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 198 transitions, 1968 flow [2024-06-14 15:45:22,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 15:45:22,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 15:45:22,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-14 15:45:22,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-14 15:45:22,647 INFO L175 Difference]: Start difference. First operand has 222 places, 175 transitions, 1508 flow. Second operand 11 states and 125 transitions. [2024-06-14 15:45:22,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 198 transitions, 1968 flow [2024-06-14 15:45:22,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 198 transitions, 1830 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 15:45:22,978 INFO L231 Difference]: Finished difference. Result has 221 places, 172 transitions, 1480 flow [2024-06-14 15:45:22,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1370, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1480, PETRI_PLACES=221, PETRI_TRANSITIONS=172} [2024-06-14 15:45:22,979 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-14 15:45:22,979 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 172 transitions, 1480 flow [2024-06-14 15:45:22,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:45:22,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:45:22,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:45:22,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-14 15:45:22,980 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:45:22,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:45:22,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1926760164, now seen corresponding path program 18 times [2024-06-14 15:45:22,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:45:22,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470736899] [2024-06-14 15:45:22,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:45:22,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:45:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:45:29,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:45:29,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:45:29,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470736899] [2024-06-14 15:45:29,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470736899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:45:29,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:45:29,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:45:29,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075067795] [2024-06-14 15:45:29,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:45:29,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:45:29,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:45:29,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:45:29,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:45:29,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:45:29,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 172 transitions, 1480 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:45:29,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:45:29,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:45:29,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:45:30,153 INFO L124 PetriNetUnfolderBase]: 513/955 cut-off events. [2024-06-14 15:45:30,154 INFO L125 PetriNetUnfolderBase]: For 180306/180306 co-relation queries the response was YES. [2024-06-14 15:45:30,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7363 conditions, 955 events. 513/955 cut-off events. For 180306/180306 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4840 event pairs, 93 based on Foata normal form. 12/967 useless extension candidates. Maximal degree in co-relation 7254. Up to 654 conditions per place. [2024-06-14 15:45:30,161 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 122 selfloop transitions, 63 changer transitions 9/196 dead transitions. [2024-06-14 15:45:30,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 196 transitions, 1970 flow [2024-06-14 15:45:30,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 15:45:30,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 15:45:30,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-14 15:45:30,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-14 15:45:30,162 INFO L175 Difference]: Start difference. First operand has 221 places, 172 transitions, 1480 flow. Second operand 12 states and 135 transitions. [2024-06-14 15:45:30,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 196 transitions, 1970 flow [2024-06-14 15:45:30,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 196 transitions, 1836 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 15:45:30,465 INFO L231 Difference]: Finished difference. Result has 220 places, 170 transitions, 1491 flow [2024-06-14 15:45:30,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1346, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1491, PETRI_PLACES=220, PETRI_TRANSITIONS=170} [2024-06-14 15:45:30,466 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 189 predicate places. [2024-06-14 15:45:30,466 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 170 transitions, 1491 flow [2024-06-14 15:45:30,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:45:30,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:45:30,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:45:30,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-14 15:45:30,466 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:45:30,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:45:30,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1926754584, now seen corresponding path program 19 times [2024-06-14 15:45:30,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:45:30,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575730183] [2024-06-14 15:45:30,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:45:30,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:45:30,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:45:35,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:45:35,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:45:35,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575730183] [2024-06-14 15:45:35,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575730183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:45:35,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:45:35,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:45:35,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105605191] [2024-06-14 15:45:35,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:45:35,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:45:35,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:45:35,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:45:35,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:45:35,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:45:35,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 170 transitions, 1491 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:45:35,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:45:35,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:45:35,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:45:36,301 INFO L124 PetriNetUnfolderBase]: 530/994 cut-off events. [2024-06-14 15:45:36,301 INFO L125 PetriNetUnfolderBase]: For 196222/196222 co-relation queries the response was YES. [2024-06-14 15:45:36,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8231 conditions, 994 events. 530/994 cut-off events. For 196222/196222 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5101 event pairs, 102 based on Foata normal form. 8/1002 useless extension candidates. Maximal degree in co-relation 8123. Up to 638 conditions per place. [2024-06-14 15:45:36,309 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 126 selfloop transitions, 59 changer transitions 8/195 dead transitions. [2024-06-14 15:45:36,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 195 transitions, 2117 flow [2024-06-14 15:45:36,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 15:45:36,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 15:45:36,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 15:45:36,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-14 15:45:36,310 INFO L175 Difference]: Start difference. First operand has 220 places, 170 transitions, 1491 flow. Second operand 11 states and 127 transitions. [2024-06-14 15:45:36,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 195 transitions, 2117 flow [2024-06-14 15:45:36,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 195 transitions, 1959 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-14 15:45:36,644 INFO L231 Difference]: Finished difference. Result has 219 places, 167 transitions, 1436 flow [2024-06-14 15:45:36,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1335, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1436, PETRI_PLACES=219, PETRI_TRANSITIONS=167} [2024-06-14 15:45:36,645 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 188 predicate places. [2024-06-14 15:45:36,645 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 167 transitions, 1436 flow [2024-06-14 15:45:36,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:45:36,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:45:36,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:45:36,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-14 15:45:36,645 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:45:36,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:45:36,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1727452794, now seen corresponding path program 20 times [2024-06-14 15:45:36,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:45:36,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100113767] [2024-06-14 15:45:36,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:45:36,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:45:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:45:41,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:45:41,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:45:41,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100113767] [2024-06-14 15:45:41,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100113767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:45:41,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:45:41,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:45:41,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616548826] [2024-06-14 15:45:41,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:45:41,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:45:41,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:45:41,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:45:41,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:45:41,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:45:41,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 167 transitions, 1436 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:45:41,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:45:41,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:45:41,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:45:42,361 INFO L124 PetriNetUnfolderBase]: 552/1040 cut-off events. [2024-06-14 15:45:42,361 INFO L125 PetriNetUnfolderBase]: For 229306/229306 co-relation queries the response was YES. [2024-06-14 15:45:42,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9085 conditions, 1040 events. 552/1040 cut-off events. For 229306/229306 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5440 event pairs, 105 based on Foata normal form. 8/1048 useless extension candidates. Maximal degree in co-relation 8977. Up to 568 conditions per place. [2024-06-14 15:45:42,369 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 84 selfloop transitions, 101 changer transitions 7/194 dead transitions. [2024-06-14 15:45:42,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 194 transitions, 2066 flow [2024-06-14 15:45:42,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:45:42,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:45:42,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 15:45:42,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-14 15:45:42,370 INFO L175 Difference]: Start difference. First operand has 219 places, 167 transitions, 1436 flow. Second operand 10 states and 124 transitions. [2024-06-14 15:45:42,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 194 transitions, 2066 flow [2024-06-14 15:45:42,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 194 transitions, 1940 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 15:45:42,741 INFO L231 Difference]: Finished difference. Result has 215 places, 165 transitions, 1508 flow [2024-06-14 15:45:42,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1316, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1508, PETRI_PLACES=215, PETRI_TRANSITIONS=165} [2024-06-14 15:45:42,741 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-14 15:45:42,741 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 165 transitions, 1508 flow [2024-06-14 15:45:42,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:45:42,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:45:42,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:45:42,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-14 15:45:42,742 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:45:42,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:45:42,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1926961974, now seen corresponding path program 21 times [2024-06-14 15:45:42,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:45:42,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410999418] [2024-06-14 15:45:42,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:45:42,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:45:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:45:47,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:45:47,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:45:47,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410999418] [2024-06-14 15:45:47,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410999418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:45:47,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:45:47,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:45:47,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483782362] [2024-06-14 15:45:47,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:45:47,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:45:47,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:45:47,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:45:47,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:45:47,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:45:47,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 165 transitions, 1508 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:45:47,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:45:47,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:45:47,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:45:48,164 INFO L124 PetriNetUnfolderBase]: 550/1038 cut-off events. [2024-06-14 15:45:48,164 INFO L125 PetriNetUnfolderBase]: For 223656/223656 co-relation queries the response was YES. [2024-06-14 15:45:48,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9080 conditions, 1038 events. 550/1038 cut-off events. For 223656/223656 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5428 event pairs, 129 based on Foata normal form. 10/1048 useless extension candidates. Maximal degree in co-relation 8974. Up to 760 conditions per place. [2024-06-14 15:45:48,173 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 118 selfloop transitions, 55 changer transitions 11/186 dead transitions. [2024-06-14 15:45:48,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 186 transitions, 1940 flow [2024-06-14 15:45:48,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 15:45:48,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 15:45:48,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-14 15:45:48,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-14 15:45:48,174 INFO L175 Difference]: Start difference. First operand has 215 places, 165 transitions, 1508 flow. Second operand 11 states and 124 transitions. [2024-06-14 15:45:48,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 186 transitions, 1940 flow [2024-06-14 15:45:48,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 186 transitions, 1736 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 15:45:48,530 INFO L231 Difference]: Finished difference. Result has 215 places, 162 transitions, 1393 flow [2024-06-14 15:45:48,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1304, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1393, PETRI_PLACES=215, PETRI_TRANSITIONS=162} [2024-06-14 15:45:48,530 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-14 15:45:48,531 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 162 transitions, 1393 flow [2024-06-14 15:45:48,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:45:48,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:45:48,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:45:48,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-14 15:45:48,531 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:45:48,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:45:48,531 INFO L85 PathProgramCache]: Analyzing trace with hash 874750616, now seen corresponding path program 1 times [2024-06-14 15:45:48,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:45:48,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386544952] [2024-06-14 15:45:48,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:45:48,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:45:48,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:45:54,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:45:54,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:45:54,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386544952] [2024-06-14 15:45:54,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386544952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:45:54,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:45:54,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:45:54,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890190340] [2024-06-14 15:45:54,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:45:54,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:45:54,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:45:54,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:45:54,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:45:54,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:45:54,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 162 transitions, 1393 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:45:54,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:45:54,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:45:54,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:45:54,824 INFO L124 PetriNetUnfolderBase]: 521/983 cut-off events. [2024-06-14 15:45:54,824 INFO L125 PetriNetUnfolderBase]: For 188117/188117 co-relation queries the response was YES. [2024-06-14 15:45:54,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8544 conditions, 983 events. 521/983 cut-off events. For 188117/188117 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5081 event pairs, 114 based on Foata normal form. 2/985 useless extension candidates. Maximal degree in co-relation 8439. Up to 749 conditions per place. [2024-06-14 15:45:54,832 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 113 selfloop transitions, 64 changer transitions 0/179 dead transitions. [2024-06-14 15:45:54,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 179 transitions, 1791 flow [2024-06-14 15:45:54,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:45:54,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:45:54,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-14 15:45:54,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-14 15:45:54,834 INFO L175 Difference]: Start difference. First operand has 215 places, 162 transitions, 1393 flow. Second operand 10 states and 112 transitions. [2024-06-14 15:45:54,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 179 transitions, 1791 flow [2024-06-14 15:45:55,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 179 transitions, 1659 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-14 15:45:55,154 INFO L231 Difference]: Finished difference. Result has 212 places, 162 transitions, 1393 flow [2024-06-14 15:45:55,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1261, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1393, PETRI_PLACES=212, PETRI_TRANSITIONS=162} [2024-06-14 15:45:55,155 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-14 15:45:55,155 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 162 transitions, 1393 flow [2024-06-14 15:45:55,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:45:55,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:45:55,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:45:55,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-14 15:45:55,156 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:45:55,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:45:55,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1581760202, now seen corresponding path program 22 times [2024-06-14 15:45:55,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:45:55,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412054073] [2024-06-14 15:45:55,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:45:55,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:45:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:45:59,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:45:59,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:45:59,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412054073] [2024-06-14 15:45:59,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412054073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:45:59,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:45:59,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:45:59,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515850995] [2024-06-14 15:45:59,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:45:59,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:45:59,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:45:59,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:45:59,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:45:59,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:45:59,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 162 transitions, 1393 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:45:59,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:45:59,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:45:59,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:46:00,477 INFO L124 PetriNetUnfolderBase]: 508/960 cut-off events. [2024-06-14 15:46:00,477 INFO L125 PetriNetUnfolderBase]: For 177128/177128 co-relation queries the response was YES. [2024-06-14 15:46:00,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7642 conditions, 960 events. 508/960 cut-off events. For 177128/177128 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4918 event pairs, 93 based on Foata normal form. 10/970 useless extension candidates. Maximal degree in co-relation 7538. Up to 557 conditions per place. [2024-06-14 15:46:00,485 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 74 selfloop transitions, 93 changer transitions 15/184 dead transitions. [2024-06-14 15:46:00,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 184 transitions, 1823 flow [2024-06-14 15:46:00,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:46:00,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:46:00,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 15:46:00,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-14 15:46:00,485 INFO L175 Difference]: Start difference. First operand has 212 places, 162 transitions, 1393 flow. Second operand 10 states and 118 transitions. [2024-06-14 15:46:00,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 184 transitions, 1823 flow [2024-06-14 15:46:00,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 184 transitions, 1695 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-14 15:46:00,763 INFO L231 Difference]: Finished difference. Result has 213 places, 156 transitions, 1417 flow [2024-06-14 15:46:00,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1265, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1417, PETRI_PLACES=213, PETRI_TRANSITIONS=156} [2024-06-14 15:46:00,764 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 182 predicate places. [2024-06-14 15:46:00,764 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 156 transitions, 1417 flow [2024-06-14 15:46:00,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:46:00,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:46:00,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:46:00,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-14 15:46:00,764 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:46:00,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:46:00,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1727308644, now seen corresponding path program 23 times [2024-06-14 15:46:00,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:46:00,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163797210] [2024-06-14 15:46:00,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:46:00,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:46:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:46:05,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:46:05,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:46:05,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163797210] [2024-06-14 15:46:05,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163797210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:46:05,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:46:05,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:46:05,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014110452] [2024-06-14 15:46:05,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:46:05,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:46:05,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:46:05,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:46:05,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:46:05,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:46:05,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 156 transitions, 1417 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:46:05,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:46:05,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:46:05,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:46:06,125 INFO L124 PetriNetUnfolderBase]: 506/966 cut-off events. [2024-06-14 15:46:06,125 INFO L125 PetriNetUnfolderBase]: For 194108/194108 co-relation queries the response was YES. [2024-06-14 15:46:06,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8215 conditions, 966 events. 506/966 cut-off events. For 194108/194108 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4973 event pairs, 94 based on Foata normal form. 8/974 useless extension candidates. Maximal degree in co-relation 8110. Up to 313 conditions per place. [2024-06-14 15:46:06,135 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 75 selfloop transitions, 87 changer transitions 17/181 dead transitions. [2024-06-14 15:46:06,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 181 transitions, 2003 flow [2024-06-14 15:46:06,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:46:06,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:46:06,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 15:46:06,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-14 15:46:06,136 INFO L175 Difference]: Start difference. First operand has 213 places, 156 transitions, 1417 flow. Second operand 10 states and 118 transitions. [2024-06-14 15:46:06,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 181 transitions, 2003 flow [2024-06-14 15:46:06,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 181 transitions, 1805 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-14 15:46:06,412 INFO L231 Difference]: Finished difference. Result has 208 places, 146 transitions, 1334 flow [2024-06-14 15:46:06,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1334, PETRI_PLACES=208, PETRI_TRANSITIONS=146} [2024-06-14 15:46:06,413 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 177 predicate places. [2024-06-14 15:46:06,413 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 146 transitions, 1334 flow [2024-06-14 15:46:06,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:46:06,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:46:06,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:46:06,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-14 15:46:06,413 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:46:06,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:46:06,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1934379220, now seen corresponding path program 2 times [2024-06-14 15:46:06,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:46:06,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425031589] [2024-06-14 15:46:06,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:46:06,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:46:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:46:11,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:46:11,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:46:11,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425031589] [2024-06-14 15:46:11,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425031589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:46:11,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:46:11,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:46:11,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257815205] [2024-06-14 15:46:11,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:46:11,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:46:11,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:46:11,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:46:11,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:46:11,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:46:11,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 146 transitions, 1334 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:46:11,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:46:11,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:46:11,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:46:12,191 INFO L124 PetriNetUnfolderBase]: 473/899 cut-off events. [2024-06-14 15:46:12,191 INFO L125 PetriNetUnfolderBase]: For 167211/167211 co-relation queries the response was YES. [2024-06-14 15:46:12,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7941 conditions, 899 events. 473/899 cut-off events. For 167211/167211 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4524 event pairs, 112 based on Foata normal form. 2/901 useless extension candidates. Maximal degree in co-relation 7838. Up to 554 conditions per place. [2024-06-14 15:46:12,198 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 84 selfloop transitions, 75 changer transitions 0/161 dead transitions. [2024-06-14 15:46:12,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 161 transitions, 1722 flow [2024-06-14 15:46:12,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:46:12,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:46:12,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 15:46:12,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-14 15:46:12,199 INFO L175 Difference]: Start difference. First operand has 208 places, 146 transitions, 1334 flow. Second operand 10 states and 109 transitions. [2024-06-14 15:46:12,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 161 transitions, 1722 flow [2024-06-14 15:46:12,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 161 transitions, 1568 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 15:46:12,435 INFO L231 Difference]: Finished difference. Result has 198 places, 147 transitions, 1370 flow [2024-06-14 15:46:12,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1370, PETRI_PLACES=198, PETRI_TRANSITIONS=147} [2024-06-14 15:46:12,435 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 167 predicate places. [2024-06-14 15:46:12,435 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 147 transitions, 1370 flow [2024-06-14 15:46:12,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:46:12,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:46:12,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:46:12,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-14 15:46:12,436 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:46:12,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:46:12,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1934111814, now seen corresponding path program 24 times [2024-06-14 15:46:12,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:46:12,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179662257] [2024-06-14 15:46:12,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:46:12,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:46:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:46:17,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:46:17,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:46:17,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179662257] [2024-06-14 15:46:17,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179662257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:46:17,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:46:17,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:46:17,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991481946] [2024-06-14 15:46:17,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:46:17,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:46:17,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:46:17,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:46:17,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:46:17,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:46:17,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 147 transitions, 1370 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:46:17,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:46:17,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:46:17,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:46:18,005 INFO L124 PetriNetUnfolderBase]: 460/876 cut-off events. [2024-06-14 15:46:18,005 INFO L125 PetriNetUnfolderBase]: For 143808/143808 co-relation queries the response was YES. [2024-06-14 15:46:18,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7006 conditions, 876 events. 460/876 cut-off events. For 143808/143808 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4378 event pairs, 97 based on Foata normal form. 10/886 useless extension candidates. Maximal degree in co-relation 6907. Up to 598 conditions per place. [2024-06-14 15:46:18,014 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 101 selfloop transitions, 53 changer transitions 11/167 dead transitions. [2024-06-14 15:46:18,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 167 transitions, 1760 flow [2024-06-14 15:46:18,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 15:46:18,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 15:46:18,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-14 15:46:18,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-14 15:46:18,015 INFO L175 Difference]: Start difference. First operand has 198 places, 147 transitions, 1370 flow. Second operand 11 states and 120 transitions. [2024-06-14 15:46:18,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 167 transitions, 1760 flow [2024-06-14 15:46:18,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 167 transitions, 1580 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-14 15:46:18,225 INFO L231 Difference]: Finished difference. Result has 201 places, 144 transitions, 1273 flow [2024-06-14 15:46:18,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1273, PETRI_PLACES=201, PETRI_TRANSITIONS=144} [2024-06-14 15:46:18,225 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-14 15:46:18,225 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 144 transitions, 1273 flow [2024-06-14 15:46:18,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:46:18,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:46:18,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:46:18,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-14 15:46:18,226 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:46:18,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:46:18,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1788690348, now seen corresponding path program 3 times [2024-06-14 15:46:18,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:46:18,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184505333] [2024-06-14 15:46:18,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:46:18,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:46:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:46:23,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:46:23,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:46:23,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184505333] [2024-06-14 15:46:23,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184505333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:46:23,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:46:23,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:46:23,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403664513] [2024-06-14 15:46:23,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:46:23,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:46:23,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:46:23,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:46:23,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:46:23,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:46:23,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 144 transitions, 1273 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:46:23,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:46:23,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:46:23,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:46:23,752 INFO L124 PetriNetUnfolderBase]: 445/847 cut-off events. [2024-06-14 15:46:23,752 INFO L125 PetriNetUnfolderBase]: For 133346/133346 co-relation queries the response was YES. [2024-06-14 15:46:23,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7117 conditions, 847 events. 445/847 cut-off events. For 133346/133346 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4197 event pairs, 98 based on Foata normal form. 2/849 useless extension candidates. Maximal degree in co-relation 7017. Up to 459 conditions per place. [2024-06-14 15:46:23,759 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 82 selfloop transitions, 77 changer transitions 0/161 dead transitions. [2024-06-14 15:46:23,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 161 transitions, 1847 flow [2024-06-14 15:46:23,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:46:23,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:46:23,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 15:46:23,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 15:46:23,760 INFO L175 Difference]: Start difference. First operand has 201 places, 144 transitions, 1273 flow. Second operand 10 states and 110 transitions. [2024-06-14 15:46:23,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 161 transitions, 1847 flow [2024-06-14 15:46:23,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 161 transitions, 1733 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 15:46:23,966 INFO L231 Difference]: Finished difference. Result has 197 places, 146 transitions, 1396 flow [2024-06-14 15:46:23,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1163, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1396, PETRI_PLACES=197, PETRI_TRANSITIONS=146} [2024-06-14 15:46:23,966 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 166 predicate places. [2024-06-14 15:46:23,966 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 146 transitions, 1396 flow [2024-06-14 15:46:23,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:46:23,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:46:23,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:46:23,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-14 15:46:23,967 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:46:23,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:46:23,967 INFO L85 PathProgramCache]: Analyzing trace with hash 728842698, now seen corresponding path program 25 times [2024-06-14 15:46:23,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:46:23,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440822314] [2024-06-14 15:46:23,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:46:23,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:46:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:46:28,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:46:28,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:46:28,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440822314] [2024-06-14 15:46:28,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440822314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:46:28,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:46:28,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:46:28,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007002164] [2024-06-14 15:46:28,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:46:28,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:46:28,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:46:28,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:46:28,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:46:28,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:46:28,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 146 transitions, 1396 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:46:28,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:46:28,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:46:28,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:46:29,402 INFO L124 PetriNetUnfolderBase]: 432/824 cut-off events. [2024-06-14 15:46:29,402 INFO L125 PetriNetUnfolderBase]: For 123360/123360 co-relation queries the response was YES. [2024-06-14 15:46:29,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6380 conditions, 824 events. 432/824 cut-off events. For 123360/123360 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4066 event pairs, 83 based on Foata normal form. 10/834 useless extension candidates. Maximal degree in co-relation 6281. Up to 545 conditions per place. [2024-06-14 15:46:29,409 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 97 selfloop transitions, 57 changer transitions 13/169 dead transitions. [2024-06-14 15:46:29,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 169 transitions, 1798 flow [2024-06-14 15:46:29,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 15:46:29,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 15:46:29,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 15:46:29,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-14 15:46:29,409 INFO L175 Difference]: Start difference. First operand has 197 places, 146 transitions, 1396 flow. Second operand 11 states and 123 transitions. [2024-06-14 15:46:29,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 169 transitions, 1798 flow [2024-06-14 15:46:29,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 169 transitions, 1589 flow, removed 28 selfloop flow, removed 11 redundant places. [2024-06-14 15:46:29,621 INFO L231 Difference]: Finished difference. Result has 197 places, 142 transitions, 1272 flow [2024-06-14 15:46:29,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1187, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1272, PETRI_PLACES=197, PETRI_TRANSITIONS=142} [2024-06-14 15:46:29,621 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 166 predicate places. [2024-06-14 15:46:29,621 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 142 transitions, 1272 flow [2024-06-14 15:46:29,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:46:29,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:46:29,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:46:29,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-14 15:46:29,621 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:46:29,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:46:29,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1732820754, now seen corresponding path program 26 times [2024-06-14 15:46:29,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:46:29,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440947942] [2024-06-14 15:46:29,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:46:29,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:46:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:46:34,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:46:34,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:46:34,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440947942] [2024-06-14 15:46:34,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440947942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:46:34,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:46:34,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:46:34,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488377954] [2024-06-14 15:46:34,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:46:34,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:46:34,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:46:34,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:46:34,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:46:34,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:46:34,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 142 transitions, 1272 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:46:34,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:46:34,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:46:34,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:46:35,011 INFO L124 PetriNetUnfolderBase]: 423/809 cut-off events. [2024-06-14 15:46:35,011 INFO L125 PetriNetUnfolderBase]: For 126148/126148 co-relation queries the response was YES. [2024-06-14 15:46:35,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6094 conditions, 809 events. 423/809 cut-off events. For 126148/126148 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3950 event pairs, 87 based on Foata normal form. 10/819 useless extension candidates. Maximal degree in co-relation 5998. Up to 522 conditions per place. [2024-06-14 15:46:35,017 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 100 selfloop transitions, 51 changer transitions 11/164 dead transitions. [2024-06-14 15:46:35,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 164 transitions, 1664 flow [2024-06-14 15:46:35,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 15:46:35,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 15:46:35,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-14 15:46:35,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-14 15:46:35,018 INFO L175 Difference]: Start difference. First operand has 197 places, 142 transitions, 1272 flow. Second operand 11 states and 125 transitions. [2024-06-14 15:46:35,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 164 transitions, 1664 flow [2024-06-14 15:46:35,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 164 transitions, 1544 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 15:46:35,202 INFO L231 Difference]: Finished difference. Result has 192 places, 139 transitions, 1233 flow [2024-06-14 15:46:35,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1233, PETRI_PLACES=192, PETRI_TRANSITIONS=139} [2024-06-14 15:46:35,202 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-14 15:46:35,202 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 139 transitions, 1233 flow [2024-06-14 15:46:35,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:46:35,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:46:35,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:46:35,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-14 15:46:35,202 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:46:35,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:46:35,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1587117002, now seen corresponding path program 27 times [2024-06-14 15:46:35,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:46:35,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177440727] [2024-06-14 15:46:35,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:46:35,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:46:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:46:40,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:46:40,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:46:40,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177440727] [2024-06-14 15:46:40,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177440727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:46:40,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:46:40,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:46:40,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501688488] [2024-06-14 15:46:40,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:46:40,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:46:40,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:46:40,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:46:40,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:46:40,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:46:40,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 139 transitions, 1233 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:46:40,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:46:40,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:46:40,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:46:40,779 INFO L124 PetriNetUnfolderBase]: 440/848 cut-off events. [2024-06-14 15:46:40,779 INFO L125 PetriNetUnfolderBase]: For 140180/140180 co-relation queries the response was YES. [2024-06-14 15:46:40,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6781 conditions, 848 events. 440/848 cut-off events. For 140180/140180 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4230 event pairs, 96 based on Foata normal form. 8/856 useless extension candidates. Maximal degree in co-relation 6687. Up to 506 conditions per place. [2024-06-14 15:46:40,786 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 106 selfloop transitions, 49 changer transitions 8/165 dead transitions. [2024-06-14 15:46:40,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 165 transitions, 1783 flow [2024-06-14 15:46:40,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 15:46:40,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 15:46:40,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 15:46:40,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-14 15:46:40,786 INFO L175 Difference]: Start difference. First operand has 192 places, 139 transitions, 1233 flow. Second operand 11 states and 127 transitions. [2024-06-14 15:46:40,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 165 transitions, 1783 flow [2024-06-14 15:46:40,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 165 transitions, 1673 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 15:46:40,962 INFO L231 Difference]: Finished difference. Result has 190 places, 136 transitions, 1207 flow [2024-06-14 15:46:40,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1127, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1207, PETRI_PLACES=190, PETRI_TRANSITIONS=136} [2024-06-14 15:46:40,963 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-14 15:46:40,963 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 136 transitions, 1207 flow [2024-06-14 15:46:40,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:46:40,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:46:40,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:46:40,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-14 15:46:40,963 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:46:40,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:46:40,964 INFO L85 PathProgramCache]: Analyzing trace with hash -546260532, now seen corresponding path program 28 times [2024-06-14 15:46:40,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:46:40,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924568717] [2024-06-14 15:46:40,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:46:40,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:46:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:46:45,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:46:45,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:46:45,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924568717] [2024-06-14 15:46:45,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924568717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:46:45,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:46:45,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:46:45,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85562104] [2024-06-14 15:46:45,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:46:45,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:46:45,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:46:45,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:46:45,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:46:45,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:46:45,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 136 transitions, 1207 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:46:45,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:46:45,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:46:45,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:46:46,387 INFO L124 PetriNetUnfolderBase]: 408/784 cut-off events. [2024-06-14 15:46:46,387 INFO L125 PetriNetUnfolderBase]: For 116165/116165 co-relation queries the response was YES. [2024-06-14 15:46:46,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5848 conditions, 784 events. 408/784 cut-off events. For 116165/116165 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3785 event pairs, 87 based on Foata normal form. 10/794 useless extension candidates. Maximal degree in co-relation 5755. Up to 506 conditions per place. [2024-06-14 15:46:46,393 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 97 selfloop transitions, 47 changer transitions 11/157 dead transitions. [2024-06-14 15:46:46,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 157 transitions, 1581 flow [2024-06-14 15:46:46,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 15:46:46,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 15:46:46,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 15:46:46,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 15:46:46,394 INFO L175 Difference]: Start difference. First operand has 190 places, 136 transitions, 1207 flow. Second operand 11 states and 121 transitions. [2024-06-14 15:46:46,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 157 transitions, 1581 flow [2024-06-14 15:46:46,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 157 transitions, 1479 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 15:46:46,547 INFO L231 Difference]: Finished difference. Result has 187 places, 133 transitions, 1175 flow [2024-06-14 15:46:46,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1175, PETRI_PLACES=187, PETRI_TRANSITIONS=133} [2024-06-14 15:46:46,548 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 156 predicate places. [2024-06-14 15:46:46,548 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 133 transitions, 1175 flow [2024-06-14 15:46:46,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:46:46,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:46:46,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:46:46,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-14 15:46:46,548 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:46:46,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:46:46,548 INFO L85 PathProgramCache]: Analyzing trace with hash 185108166, now seen corresponding path program 4 times [2024-06-14 15:46:46,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:46:46,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143569322] [2024-06-14 15:46:46,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:46:46,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:46:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:46:51,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:46:51,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:46:51,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143569322] [2024-06-14 15:46:51,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143569322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:46:51,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:46:51,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:46:51,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188679207] [2024-06-14 15:46:51,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:46:51,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:46:51,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:46:51,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:46:51,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:46:51,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:46:51,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 133 transitions, 1175 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:46:51,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:46:51,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:46:51,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:46:52,465 INFO L124 PetriNetUnfolderBase]: 379/729 cut-off events. [2024-06-14 15:46:52,466 INFO L125 PetriNetUnfolderBase]: For 85853/85853 co-relation queries the response was YES. [2024-06-14 15:46:52,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5426 conditions, 729 events. 379/729 cut-off events. For 85853/85853 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3449 event pairs, 88 based on Foata normal form. 2/731 useless extension candidates. Maximal degree in co-relation 5335. Up to 418 conditions per place. [2024-06-14 15:46:52,471 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 87 selfloop transitions, 59 changer transitions 0/148 dead transitions. [2024-06-14 15:46:52,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 148 transitions, 1507 flow [2024-06-14 15:46:52,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:46:52,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:46:52,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 15:46:52,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-14 15:46:52,472 INFO L175 Difference]: Start difference. First operand has 187 places, 133 transitions, 1175 flow. Second operand 10 states and 109 transitions. [2024-06-14 15:46:52,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 148 transitions, 1507 flow [2024-06-14 15:46:52,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 148 transitions, 1393 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-14 15:46:52,596 INFO L231 Difference]: Finished difference. Result has 183 places, 133 transitions, 1183 flow [2024-06-14 15:46:52,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1061, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1183, PETRI_PLACES=183, PETRI_TRANSITIONS=133} [2024-06-14 15:46:52,597 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-14 15:46:52,597 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 133 transitions, 1183 flow [2024-06-14 15:46:52,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:46:52,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:46:52,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:46:52,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-14 15:46:52,597 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:46:52,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:46:52,598 INFO L85 PathProgramCache]: Analyzing trace with hash 442218408, now seen corresponding path program 5 times [2024-06-14 15:46:52,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:46:52,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066238907] [2024-06-14 15:46:52,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:46:52,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:46:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:46:58,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:46:58,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:46:58,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066238907] [2024-06-14 15:46:58,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066238907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:46:58,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:46:58,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:46:58,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645931715] [2024-06-14 15:46:58,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:46:58,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:46:58,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:46:58,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:46:58,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:46:58,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:46:58,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 133 transitions, 1183 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:46:58,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:46:58,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:46:58,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:46:58,716 INFO L124 PetriNetUnfolderBase]: 383/737 cut-off events. [2024-06-14 15:46:58,716 INFO L125 PetriNetUnfolderBase]: For 83454/83454 co-relation queries the response was YES. [2024-06-14 15:46:58,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5459 conditions, 737 events. 383/737 cut-off events. For 83454/83454 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3514 event pairs, 87 based on Foata normal form. 2/739 useless extension candidates. Maximal degree in co-relation 5369. Up to 666 conditions per place. [2024-06-14 15:46:58,721 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 120 selfloop transitions, 26 changer transitions 0/148 dead transitions. [2024-06-14 15:46:58,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 148 transitions, 1537 flow [2024-06-14 15:46:58,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:46:58,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:46:58,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 15:46:58,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-14 15:46:58,723 INFO L175 Difference]: Start difference. First operand has 183 places, 133 transitions, 1183 flow. Second operand 10 states and 107 transitions. [2024-06-14 15:46:58,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 148 transitions, 1537 flow [2024-06-14 15:46:58,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 148 transitions, 1398 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 15:46:58,860 INFO L231 Difference]: Finished difference. Result has 183 places, 134 transitions, 1128 flow [2024-06-14 15:46:58,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1128, PETRI_PLACES=183, PETRI_TRANSITIONS=134} [2024-06-14 15:46:58,860 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-14 15:46:58,860 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 134 transitions, 1128 flow [2024-06-14 15:46:58,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:46:58,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:46:58,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:46:58,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-14 15:46:58,860 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:46:58,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:46:58,861 INFO L85 PathProgramCache]: Analyzing trace with hash 442210472, now seen corresponding path program 29 times [2024-06-14 15:46:58,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:46:58,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834737971] [2024-06-14 15:46:58,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:46:58,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:46:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:47:03,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:47:03,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:47:03,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834737971] [2024-06-14 15:47:03,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834737971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:47:03,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:47:03,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:47:03,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838861517] [2024-06-14 15:47:03,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:47:03,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:47:03,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:47:03,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:47:03,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:47:03,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:47:03,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 134 transitions, 1128 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:47:03,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:47:03,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:47:03,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:47:04,478 INFO L124 PetriNetUnfolderBase]: 399/773 cut-off events. [2024-06-14 15:47:04,478 INFO L125 PetriNetUnfolderBase]: For 104812/104812 co-relation queries the response was YES. [2024-06-14 15:47:04,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5491 conditions, 773 events. 399/773 cut-off events. For 104812/104812 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3770 event pairs, 91 based on Foata normal form. 10/783 useless extension candidates. Maximal degree in co-relation 5401. Up to 658 conditions per place. [2024-06-14 15:47:04,483 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 117 selfloop transitions, 24 changer transitions 11/154 dead transitions. [2024-06-14 15:47:04,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 154 transitions, 1492 flow [2024-06-14 15:47:04,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 15:47:04,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 15:47:04,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-14 15:47:04,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-14 15:47:04,483 INFO L175 Difference]: Start difference. First operand has 183 places, 134 transitions, 1128 flow. Second operand 11 states and 119 transitions. [2024-06-14 15:47:04,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 154 transitions, 1492 flow [2024-06-14 15:47:04,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 154 transitions, 1418 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 15:47:04,624 INFO L231 Difference]: Finished difference. Result has 186 places, 131 transitions, 1080 flow [2024-06-14 15:47:04,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1054, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1080, PETRI_PLACES=186, PETRI_TRANSITIONS=131} [2024-06-14 15:47:04,624 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-06-14 15:47:04,624 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 131 transitions, 1080 flow [2024-06-14 15:47:04,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:47:04,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:47:04,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:47:04,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-14 15:47:04,624 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:47:04,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:47:04,625 INFO L85 PathProgramCache]: Analyzing trace with hash 442008662, now seen corresponding path program 30 times [2024-06-14 15:47:04,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:47:04,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008750337] [2024-06-14 15:47:04,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:47:04,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:47:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:47:09,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:47:09,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:47:09,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008750337] [2024-06-14 15:47:09,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008750337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:47:09,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:47:09,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:47:09,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940486016] [2024-06-14 15:47:09,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:47:09,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:47:09,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:47:09,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:47:09,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:47:09,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:47:09,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 131 transitions, 1080 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:47:09,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:47:09,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:47:09,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:47:09,829 INFO L124 PetriNetUnfolderBase]: 389/759 cut-off events. [2024-06-14 15:47:09,829 INFO L125 PetriNetUnfolderBase]: For 107583/107583 co-relation queries the response was YES. [2024-06-14 15:47:09,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5398 conditions, 759 events. 389/759 cut-off events. For 107583/107583 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3694 event pairs, 91 based on Foata normal form. 10/769 useless extension candidates. Maximal degree in co-relation 5307. Up to 643 conditions per place. [2024-06-14 15:47:09,834 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 114 selfloop transitions, 24 changer transitions 11/151 dead transitions. [2024-06-14 15:47:09,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 151 transitions, 1438 flow [2024-06-14 15:47:09,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 15:47:09,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 15:47:09,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-14 15:47:09,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-14 15:47:09,834 INFO L175 Difference]: Start difference. First operand has 186 places, 131 transitions, 1080 flow. Second operand 11 states and 120 transitions. [2024-06-14 15:47:09,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 151 transitions, 1438 flow [2024-06-14 15:47:09,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 151 transitions, 1386 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 15:47:09,962 INFO L231 Difference]: Finished difference. Result has 184 places, 128 transitions, 1055 flow [2024-06-14 15:47:09,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1055, PETRI_PLACES=184, PETRI_TRANSITIONS=128} [2024-06-14 15:47:09,963 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2024-06-14 15:47:09,963 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 128 transitions, 1055 flow [2024-06-14 15:47:09,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:47:09,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:47:09,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:47:09,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-14 15:47:09,963 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:47:09,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:47:09,963 INFO L85 PathProgramCache]: Analyzing trace with hash 442003082, now seen corresponding path program 31 times [2024-06-14 15:47:09,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:47:09,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638161144] [2024-06-14 15:47:09,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:47:09,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:47:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:47:14,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:47:14,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:47:14,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638161144] [2024-06-14 15:47:14,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638161144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:47:14,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:47:14,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:47:14,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574398561] [2024-06-14 15:47:14,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:47:14,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:47:14,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:47:14,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:47:14,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:47:15,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:47:15,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 128 transitions, 1055 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:47:15,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:47:15,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:47:15,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:47:15,507 INFO L124 PetriNetUnfolderBase]: 377/739 cut-off events. [2024-06-14 15:47:15,507 INFO L125 PetriNetUnfolderBase]: For 99681/99681 co-relation queries the response was YES. [2024-06-14 15:47:15,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5273 conditions, 739 events. 377/739 cut-off events. For 99681/99681 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3585 event pairs, 79 based on Foata normal form. 8/747 useless extension candidates. Maximal degree in co-relation 5183. Up to 633 conditions per place. [2024-06-14 15:47:15,512 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 112 selfloop transitions, 22 changer transitions 11/147 dead transitions. [2024-06-14 15:47:15,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 147 transitions, 1397 flow [2024-06-14 15:47:15,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 15:47:15,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 15:47:15,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-14 15:47:15,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-14 15:47:15,513 INFO L175 Difference]: Start difference. First operand has 184 places, 128 transitions, 1055 flow. Second operand 11 states and 117 transitions. [2024-06-14 15:47:15,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 147 transitions, 1397 flow [2024-06-14 15:47:15,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 147 transitions, 1345 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 15:47:15,647 INFO L231 Difference]: Finished difference. Result has 182 places, 125 transitions, 1029 flow [2024-06-14 15:47:15,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1029, PETRI_PLACES=182, PETRI_TRANSITIONS=125} [2024-06-14 15:47:15,648 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 151 predicate places. [2024-06-14 15:47:15,648 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 125 transitions, 1029 flow [2024-06-14 15:47:15,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:47:15,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:47:15,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:47:15,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-14 15:47:15,648 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:47:15,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:47:15,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1405676022, now seen corresponding path program 6 times [2024-06-14 15:47:15,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:47:15,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760442923] [2024-06-14 15:47:15,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:47:15,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:47:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:47:21,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:47:21,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:47:21,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760442923] [2024-06-14 15:47:21,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760442923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:47:21,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:47:21,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:47:21,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784796853] [2024-06-14 15:47:21,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:47:21,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:47:21,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:47:21,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:47:21,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:47:21,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:47:21,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 125 transitions, 1029 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:47:21,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:47:21,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:47:21,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:47:22,255 INFO L124 PetriNetUnfolderBase]: 369/719 cut-off events. [2024-06-14 15:47:22,255 INFO L125 PetriNetUnfolderBase]: For 88173/88173 co-relation queries the response was YES. [2024-06-14 15:47:22,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5426 conditions, 719 events. 369/719 cut-off events. For 88173/88173 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3446 event pairs, 89 based on Foata normal form. 2/721 useless extension candidates. Maximal degree in co-relation 5337. Up to 648 conditions per place. [2024-06-14 15:47:22,260 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 118 selfloop transitions, 21 changer transitions 0/141 dead transitions. [2024-06-14 15:47:22,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 141 transitions, 1531 flow [2024-06-14 15:47:22,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:47:22,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:47:22,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-14 15:47:22,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31875 [2024-06-14 15:47:22,261 INFO L175 Difference]: Start difference. First operand has 182 places, 125 transitions, 1029 flow. Second operand 10 states and 102 transitions. [2024-06-14 15:47:22,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 141 transitions, 1531 flow [2024-06-14 15:47:22,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 141 transitions, 1475 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 15:47:22,383 INFO L231 Difference]: Finished difference. Result has 177 places, 127 transitions, 1083 flow [2024-06-14 15:47:22,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1083, PETRI_PLACES=177, PETRI_TRANSITIONS=127} [2024-06-14 15:47:22,384 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-14 15:47:22,384 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 127 transitions, 1083 flow [2024-06-14 15:47:22,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:47:22,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:47:22,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:47:22,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-14 15:47:22,384 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:47:22,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:47:22,384 INFO L85 PathProgramCache]: Analyzing trace with hash 636157818, now seen corresponding path program 7 times [2024-06-14 15:47:22,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:47:22,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075474952] [2024-06-14 15:47:22,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:47:22,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:47:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:47:27,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:47:27,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:47:27,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075474952] [2024-06-14 15:47:27,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075474952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:47:27,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:47:27,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:47:27,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101089425] [2024-06-14 15:47:27,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:47:27,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:47:27,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:47:27,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:47:27,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:47:27,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:47:27,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 127 transitions, 1083 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:47:27,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:47:27,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:47:27,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:47:27,928 INFO L124 PetriNetUnfolderBase]: 373/727 cut-off events. [2024-06-14 15:47:27,928 INFO L125 PetriNetUnfolderBase]: For 83763/83763 co-relation queries the response was YES. [2024-06-14 15:47:27,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5448 conditions, 727 events. 373/727 cut-off events. For 83763/83763 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3501 event pairs, 90 based on Foata normal form. 2/729 useless extension candidates. Maximal degree in co-relation 5361. Up to 656 conditions per place. [2024-06-14 15:47:27,934 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 116 selfloop transitions, 24 changer transitions 0/142 dead transitions. [2024-06-14 15:47:27,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 142 transitions, 1429 flow [2024-06-14 15:47:27,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:47:27,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:47:27,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-14 15:47:27,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-14 15:47:27,935 INFO L175 Difference]: Start difference. First operand has 177 places, 127 transitions, 1083 flow. Second operand 10 states and 105 transitions. [2024-06-14 15:47:27,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 142 transitions, 1429 flow [2024-06-14 15:47:28,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 142 transitions, 1377 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-14 15:47:28,078 INFO L231 Difference]: Finished difference. Result has 181 places, 128 transitions, 1115 flow [2024-06-14 15:47:28,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1115, PETRI_PLACES=181, PETRI_TRANSITIONS=128} [2024-06-14 15:47:28,078 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-14 15:47:28,078 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 128 transitions, 1115 flow [2024-06-14 15:47:28,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:47:28,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:47:28,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:47:28,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-14 15:47:28,079 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:47:28,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:47:28,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1719384552, now seen corresponding path program 8 times [2024-06-14 15:47:28,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:47:28,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874519888] [2024-06-14 15:47:28,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:47:28,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:47:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:47:32,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:47:32,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:47:32,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874519888] [2024-06-14 15:47:32,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874519888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:47:32,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:47:32,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:47:32,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458739328] [2024-06-14 15:47:32,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:47:32,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:47:32,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:47:32,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:47:32,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:47:32,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:47:32,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 128 transitions, 1115 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:47:32,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:47:32,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:47:32,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:47:33,375 INFO L124 PetriNetUnfolderBase]: 370/722 cut-off events. [2024-06-14 15:47:33,375 INFO L125 PetriNetUnfolderBase]: For 81546/81546 co-relation queries the response was YES. [2024-06-14 15:47:33,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5325 conditions, 722 events. 370/722 cut-off events. For 81546/81546 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3455 event pairs, 88 based on Foata normal form. 2/724 useless extension candidates. Maximal degree in co-relation 5236. Up to 670 conditions per place. [2024-06-14 15:47:33,380 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 118 selfloop transitions, 21 changer transitions 0/141 dead transitions. [2024-06-14 15:47:33,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 141 transitions, 1425 flow [2024-06-14 15:47:33,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:47:33,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:47:33,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-14 15:47:33,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-14 15:47:33,381 INFO L175 Difference]: Start difference. First operand has 181 places, 128 transitions, 1115 flow. Second operand 10 states and 100 transitions. [2024-06-14 15:47:33,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 141 transitions, 1425 flow [2024-06-14 15:47:33,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 141 transitions, 1327 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-14 15:47:33,519 INFO L231 Difference]: Finished difference. Result has 183 places, 128 transitions, 1064 flow [2024-06-14 15:47:33,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1064, PETRI_PLACES=183, PETRI_TRANSITIONS=128} [2024-06-14 15:47:33,520 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-14 15:47:33,520 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 128 transitions, 1064 flow [2024-06-14 15:47:33,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:47:33,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:47:33,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:47:33,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-14 15:47:33,520 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:47:33,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:47:33,520 INFO L85 PathProgramCache]: Analyzing trace with hash 636149882, now seen corresponding path program 32 times [2024-06-14 15:47:33,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:47:33,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301337892] [2024-06-14 15:47:33,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:47:33,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:47:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:47:38,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:47:38,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:47:38,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301337892] [2024-06-14 15:47:38,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301337892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:47:38,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:47:38,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:47:38,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572349187] [2024-06-14 15:47:38,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:47:38,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:47:38,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:47:38,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:47:38,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:47:38,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:47:38,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 128 transitions, 1064 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:47:38,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:47:38,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:47:38,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:47:39,036 INFO L124 PetriNetUnfolderBase]: 386/758 cut-off events. [2024-06-14 15:47:39,036 INFO L125 PetriNetUnfolderBase]: For 101777/101777 co-relation queries the response was YES. [2024-06-14 15:47:39,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5346 conditions, 758 events. 386/758 cut-off events. For 101777/101777 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3736 event pairs, 93 based on Foata normal form. 10/768 useless extension candidates. Maximal degree in co-relation 5256. Up to 643 conditions per place. [2024-06-14 15:47:39,041 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 113 selfloop transitions, 22 changer transitions 11/148 dead transitions. [2024-06-14 15:47:39,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 148 transitions, 1416 flow [2024-06-14 15:47:39,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 15:47:39,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 15:47:39,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-14 15:47:39,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-14 15:47:39,042 INFO L175 Difference]: Start difference. First operand has 183 places, 128 transitions, 1064 flow. Second operand 11 states and 117 transitions. [2024-06-14 15:47:39,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 148 transitions, 1416 flow [2024-06-14 15:47:39,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 148 transitions, 1371 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-14 15:47:39,185 INFO L231 Difference]: Finished difference. Result has 185 places, 125 transitions, 1039 flow [2024-06-14 15:47:39,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1039, PETRI_PLACES=185, PETRI_TRANSITIONS=125} [2024-06-14 15:47:39,185 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 154 predicate places. [2024-06-14 15:47:39,185 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 125 transitions, 1039 flow [2024-06-14 15:47:39,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:47:39,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:47:39,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:47:39,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-14 15:47:39,185 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:47:39,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:47:39,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1974955240, now seen corresponding path program 9 times [2024-06-14 15:47:39,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:47:39,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611552795] [2024-06-14 15:47:39,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:47:39,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:47:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:47:44,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:47:44,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:47:44,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611552795] [2024-06-14 15:47:44,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611552795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:47:44,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:47:44,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:47:44,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566341884] [2024-06-14 15:47:44,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:47:44,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:47:44,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:47:44,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:47:44,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:47:45,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:47:45,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 125 transitions, 1039 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:47:45,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:47:45,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:47:45,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:47:45,571 INFO L124 PetriNetUnfolderBase]: 388/772 cut-off events. [2024-06-14 15:47:45,571 INFO L125 PetriNetUnfolderBase]: For 122617/122617 co-relation queries the response was YES. [2024-06-14 15:47:45,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5423 conditions, 772 events. 388/772 cut-off events. For 122617/122617 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3872 event pairs, 90 based on Foata normal form. 18/790 useless extension candidates. Maximal degree in co-relation 5332. Up to 622 conditions per place. [2024-06-14 15:47:45,576 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 103 selfloop transitions, 25 changer transitions 16/146 dead transitions. [2024-06-14 15:47:45,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 146 transitions, 1419 flow [2024-06-14 15:47:45,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 15:47:45,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 15:47:45,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-14 15:47:45,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-14 15:47:45,577 INFO L175 Difference]: Start difference. First operand has 185 places, 125 transitions, 1039 flow. Second operand 11 states and 117 transitions. [2024-06-14 15:47:45,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 146 transitions, 1419 flow [2024-06-14 15:47:45,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 146 transitions, 1371 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 15:47:45,694 INFO L231 Difference]: Finished difference. Result has 183 places, 120 transitions, 1002 flow [2024-06-14 15:47:45,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1002, PETRI_PLACES=183, PETRI_TRANSITIONS=120} [2024-06-14 15:47:45,694 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-14 15:47:45,694 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 120 transitions, 1002 flow [2024-06-14 15:47:45,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:47:45,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:47:45,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:47:45,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-14 15:47:45,695 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:47:45,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:47:45,695 INFO L85 PathProgramCache]: Analyzing trace with hash 635948072, now seen corresponding path program 33 times [2024-06-14 15:47:45,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:47:45,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473845167] [2024-06-14 15:47:45,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:47:45,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:47:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:47:50,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:47:50,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:47:50,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473845167] [2024-06-14 15:47:50,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473845167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:47:50,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:47:50,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:47:50,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248269239] [2024-06-14 15:47:50,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:47:51,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:47:51,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:47:51,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:47:51,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:47:51,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:47:51,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 120 transitions, 1002 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:47:51,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:47:51,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:47:51,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:47:51,761 INFO L124 PetriNetUnfolderBase]: 362/722 cut-off events. [2024-06-14 15:47:51,761 INFO L125 PetriNetUnfolderBase]: For 101689/101689 co-relation queries the response was YES. [2024-06-14 15:47:51,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5162 conditions, 722 events. 362/722 cut-off events. For 101689/101689 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3543 event pairs, 91 based on Foata normal form. 10/732 useless extension candidates. Maximal degree in co-relation 5072. Up to 598 conditions per place. [2024-06-14 15:47:51,767 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 103 selfloop transitions, 24 changer transitions 11/140 dead transitions. [2024-06-14 15:47:51,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 140 transitions, 1338 flow [2024-06-14 15:47:51,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 15:47:51,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 15:47:51,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-14 15:47:51,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-14 15:47:51,768 INFO L175 Difference]: Start difference. First operand has 183 places, 120 transitions, 1002 flow. Second operand 11 states and 118 transitions. [2024-06-14 15:47:51,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 140 transitions, 1338 flow [2024-06-14 15:47:51,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 140 transitions, 1282 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 15:47:51,927 INFO L231 Difference]: Finished difference. Result has 179 places, 117 transitions, 973 flow [2024-06-14 15:47:51,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=946, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=973, PETRI_PLACES=179, PETRI_TRANSITIONS=117} [2024-06-14 15:47:51,927 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 148 predicate places. [2024-06-14 15:47:51,927 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 117 transitions, 973 flow [2024-06-14 15:47:51,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:47:51,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:47:51,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:47:51,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-14 15:47:51,928 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:47:51,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:47:51,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1719651958, now seen corresponding path program 34 times [2024-06-14 15:47:51,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:47:51,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880254624] [2024-06-14 15:47:51,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:47:51,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:47:51,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:47:56,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:47:56,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:47:56,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880254624] [2024-06-14 15:47:56,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880254624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:47:56,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:47:56,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:47:56,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468107621] [2024-06-14 15:47:56,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:47:56,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:47:56,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:47:56,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:47:56,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:47:56,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:47:56,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 117 transitions, 973 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:47:56,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:47:56,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:47:56,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:47:57,249 INFO L124 PetriNetUnfolderBase]: 354/710 cut-off events. [2024-06-14 15:47:57,249 INFO L125 PetriNetUnfolderBase]: For 95903/95903 co-relation queries the response was YES. [2024-06-14 15:47:57,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5022 conditions, 710 events. 354/710 cut-off events. For 95903/95903 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3474 event pairs, 88 based on Foata normal form. 10/720 useless extension candidates. Maximal degree in co-relation 4934. Up to 614 conditions per place. [2024-06-14 15:47:57,254 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 104 selfloop transitions, 18 changer transitions 12/136 dead transitions. [2024-06-14 15:47:57,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 136 transitions, 1297 flow [2024-06-14 15:47:57,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 15:47:57,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 15:47:57,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-14 15:47:57,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-14 15:47:57,255 INFO L175 Difference]: Start difference. First operand has 179 places, 117 transitions, 973 flow. Second operand 11 states and 112 transitions. [2024-06-14 15:47:57,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 136 transitions, 1297 flow [2024-06-14 15:47:57,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 136 transitions, 1245 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 15:47:57,372 INFO L231 Difference]: Finished difference. Result has 177 places, 113 transitions, 923 flow [2024-06-14 15:47:57,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=923, PETRI_PLACES=177, PETRI_TRANSITIONS=113} [2024-06-14 15:47:57,372 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-14 15:47:57,372 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 113 transitions, 923 flow [2024-06-14 15:47:57,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:47:57,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:47:57,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:47:57,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-14 15:47:57,373 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:47:57,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:47:57,373 INFO L85 PathProgramCache]: Analyzing trace with hash 635942492, now seen corresponding path program 35 times [2024-06-14 15:47:57,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:47:57,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437070664] [2024-06-14 15:47:57,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:47:57,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:47:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:48:02,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:48:02,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:48:02,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437070664] [2024-06-14 15:48:02,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437070664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:48:02,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:48:02,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:48:02,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090655308] [2024-06-14 15:48:02,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:48:02,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:48:02,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:48:02,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:48:02,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:48:02,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:48:02,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 113 transitions, 923 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:48:02,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:48:02,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:48:02,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:48:02,971 INFO L124 PetriNetUnfolderBase]: 367/745 cut-off events. [2024-06-14 15:48:02,971 INFO L125 PetriNetUnfolderBase]: For 109935/109935 co-relation queries the response was YES. [2024-06-14 15:48:02,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5651 conditions, 745 events. 367/745 cut-off events. For 109935/109935 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3751 event pairs, 98 based on Foata normal form. 8/753 useless extension candidates. Maximal degree in co-relation 5564. Up to 566 conditions per place. [2024-06-14 15:48:02,976 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 105 selfloop transitions, 22 changer transitions 8/137 dead transitions. [2024-06-14 15:48:02,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 137 transitions, 1395 flow [2024-06-14 15:48:02,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 15:48:02,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 15:48:02,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-14 15:48:02,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-14 15:48:02,977 INFO L175 Difference]: Start difference. First operand has 177 places, 113 transitions, 923 flow. Second operand 11 states and 120 transitions. [2024-06-14 15:48:02,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 137 transitions, 1395 flow [2024-06-14 15:48:03,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 137 transitions, 1351 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 15:48:03,079 INFO L231 Difference]: Finished difference. Result has 175 places, 110 transitions, 907 flow [2024-06-14 15:48:03,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=907, PETRI_PLACES=175, PETRI_TRANSITIONS=110} [2024-06-14 15:48:03,080 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 144 predicate places. [2024-06-14 15:48:03,080 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 110 transitions, 907 flow [2024-06-14 15:48:03,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:48:03,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:48:03,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:48:03,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-14 15:48:03,080 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:48:03,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:48:03,081 INFO L85 PathProgramCache]: Analyzing trace with hash 643567128, now seen corresponding path program 10 times [2024-06-14 15:48:03,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:48:03,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326982374] [2024-06-14 15:48:03,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:48:03,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:48:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:48:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:48:08,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:48:08,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326982374] [2024-06-14 15:48:08,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326982374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:48:08,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:48:08,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:48:08,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531260157] [2024-06-14 15:48:08,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:48:08,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:48:08,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:48:08,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:48:08,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:48:08,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:48:08,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 110 transitions, 907 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:48:08,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:48:08,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:48:08,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:48:08,647 INFO L124 PetriNetUnfolderBase]: 352/712 cut-off events. [2024-06-14 15:48:08,647 INFO L125 PetriNetUnfolderBase]: For 94795/94795 co-relation queries the response was YES. [2024-06-14 15:48:08,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5576 conditions, 712 events. 352/712 cut-off events. For 94795/94795 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3521 event pairs, 104 based on Foata normal form. 2/714 useless extension candidates. Maximal degree in co-relation 5490. Up to 641 conditions per place. [2024-06-14 15:48:08,652 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 99 selfloop transitions, 23 changer transitions 0/124 dead transitions. [2024-06-14 15:48:08,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 124 transitions, 1215 flow [2024-06-14 15:48:08,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:48:08,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:48:08,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-14 15:48:08,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31875 [2024-06-14 15:48:08,653 INFO L175 Difference]: Start difference. First operand has 175 places, 110 transitions, 907 flow. Second operand 10 states and 102 transitions. [2024-06-14 15:48:08,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 124 transitions, 1215 flow [2024-06-14 15:48:08,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 124 transitions, 1167 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 15:48:08,756 INFO L231 Difference]: Finished difference. Result has 171 places, 111 transitions, 943 flow [2024-06-14 15:48:08,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=943, PETRI_PLACES=171, PETRI_TRANSITIONS=111} [2024-06-14 15:48:08,756 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 140 predicate places. [2024-06-14 15:48:08,756 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 111 transitions, 943 flow [2024-06-14 15:48:08,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:48:08,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:48:08,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:48:08,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-14 15:48:08,757 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:48:08,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:48:08,757 INFO L85 PathProgramCache]: Analyzing trace with hash 571401534, now seen corresponding path program 11 times [2024-06-14 15:48:08,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:48:08,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814240214] [2024-06-14 15:48:08,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:48:08,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:48:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:48:14,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:48:14,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:48:14,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814240214] [2024-06-14 15:48:14,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814240214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:48:14,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:48:14,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 15:48:14,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516312424] [2024-06-14 15:48:14,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:48:14,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 15:48:14,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:48:14,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 15:48:14,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 15:48:14,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:48:14,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 111 transitions, 943 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:48:14,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:48:14,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:48:14,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:48:14,757 INFO L124 PetriNetUnfolderBase]: 356/720 cut-off events. [2024-06-14 15:48:14,757 INFO L125 PetriNetUnfolderBase]: For 89611/89611 co-relation queries the response was YES. [2024-06-14 15:48:14,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5596 conditions, 720 events. 356/720 cut-off events. For 89611/89611 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3576 event pairs, 106 based on Foata normal form. 2/722 useless extension candidates. Maximal degree in co-relation 5512. Up to 623 conditions per place. [2024-06-14 15:48:14,761 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 97 selfloop transitions, 26 changer transitions 0/125 dead transitions. [2024-06-14 15:48:14,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 125 transitions, 1253 flow [2024-06-14 15:48:14,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:48:14,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:48:14,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-14 15:48:14,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.321875 [2024-06-14 15:48:14,763 INFO L175 Difference]: Start difference. First operand has 171 places, 111 transitions, 943 flow. Second operand 10 states and 103 transitions. [2024-06-14 15:48:14,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 125 transitions, 1253 flow [2024-06-14 15:48:14,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 125 transitions, 1179 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-14 15:48:14,874 INFO L231 Difference]: Finished difference. Result has 173 places, 112 transitions, 961 flow [2024-06-14 15:48:14,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=961, PETRI_PLACES=173, PETRI_TRANSITIONS=112} [2024-06-14 15:48:14,874 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 142 predicate places. [2024-06-14 15:48:14,874 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 112 transitions, 961 flow [2024-06-14 15:48:14,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2024-06-14 15:48:14,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:48:14,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:48:14,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-14 15:48:14,874 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:48:14,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:48:14,875 INFO L85 PathProgramCache]: Analyzing trace with hash 643299722, now seen corresponding path program 36 times [2024-06-14 15:48:14,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:48:14,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569664338] [2024-06-14 15:48:14,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:48:14,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:48:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:48:20,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:48:20,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:48:20,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569664338] [2024-06-14 15:48:20,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569664338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:48:20,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:48:20,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:48:20,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781140267] [2024-06-14 15:48:20,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:48:20,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:48:20,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:48:20,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:48:20,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:48:20,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:48:20,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 112 transitions, 961 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:48:20,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:48:20,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:48:20,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:48:20,662 INFO L124 PetriNetUnfolderBase]: 343/697 cut-off events. [2024-06-14 15:48:20,662 INFO L125 PetriNetUnfolderBase]: For 88151/88151 co-relation queries the response was YES. [2024-06-14 15:48:20,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4931 conditions, 697 events. 343/697 cut-off events. For 88151/88151 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3453 event pairs, 91 based on Foata normal form. 10/707 useless extension candidates. Maximal degree in co-relation 4846. Up to 576 conditions per place. [2024-06-14 15:48:20,666 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 98 selfloop transitions, 22 changer transitions 9/131 dead transitions. [2024-06-14 15:48:20,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 131 transitions, 1275 flow [2024-06-14 15:48:20,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 15:48:20,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 15:48:20,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-14 15:48:20,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-14 15:48:20,667 INFO L175 Difference]: Start difference. First operand has 173 places, 112 transitions, 961 flow. Second operand 11 states and 115 transitions. [2024-06-14 15:48:20,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 131 transitions, 1275 flow [2024-06-14 15:48:20,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 131 transitions, 1193 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-14 15:48:20,788 INFO L231 Difference]: Finished difference. Result has 176 places, 109 transitions, 899 flow [2024-06-14 15:48:20,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=899, PETRI_PLACES=176, PETRI_TRANSITIONS=109} [2024-06-14 15:48:20,788 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 145 predicate places. [2024-06-14 15:48:20,788 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 109 transitions, 899 flow [2024-06-14 15:48:20,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:48:20,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:48:20,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:48:20,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-14 15:48:20,789 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:48:20,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:48:20,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1710120822, now seen corresponding path program 12 times [2024-06-14 15:48:20,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:48:20,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114318631] [2024-06-14 15:48:20,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:48:20,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:48:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 15:48:26,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 15:48:26,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 15:48:26,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114318631] [2024-06-14 15:48:26,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114318631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 15:48:26,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 15:48:26,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 15:48:26,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714614711] [2024-06-14 15:48:26,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 15:48:26,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 15:48:26,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 15:48:26,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 15:48:26,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 15:48:26,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-14 15:48:26,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 109 transitions, 899 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:48:26,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 15:48:26,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-14 15:48:26,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 15:48:26,658 INFO L124 PetriNetUnfolderBase]: 314/642 cut-off events. [2024-06-14 15:48:26,658 INFO L125 PetriNetUnfolderBase]: For 69913/69913 co-relation queries the response was YES. [2024-06-14 15:48:26,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4546 conditions, 642 events. 314/642 cut-off events. For 69913/69913 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3100 event pairs, 70 based on Foata normal form. 2/644 useless extension candidates. Maximal degree in co-relation 4460. Up to 596 conditions per place. [2024-06-14 15:48:26,662 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 106 selfloop transitions, 15 changer transitions 0/123 dead transitions. [2024-06-14 15:48:26,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 123 transitions, 1205 flow [2024-06-14 15:48:26,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 15:48:26,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 15:48:26,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-14 15:48:26,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.303125 [2024-06-14 15:48:26,663 INFO L175 Difference]: Start difference. First operand has 176 places, 109 transitions, 899 flow. Second operand 10 states and 97 transitions. [2024-06-14 15:48:26,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 123 transitions, 1205 flow [2024-06-14 15:48:26,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 123 transitions, 1155 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 15:48:26,769 INFO L231 Difference]: Finished difference. Result has 172 places, 110 transitions, 921 flow [2024-06-14 15:48:26,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=921, PETRI_PLACES=172, PETRI_TRANSITIONS=110} [2024-06-14 15:48:26,769 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-14 15:48:26,769 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 110 transitions, 921 flow [2024-06-14 15:48:26,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2024-06-14 15:48:26,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 15:48:26,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 15:48:26,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-14 15:48:26,770 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 15:48:26,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 15:48:26,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1155170754, now seen corresponding path program 37 times [2024-06-14 15:48:26,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 15:48:26,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424127443] [2024-06-14 15:48:26,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 15:48:26,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 15:48:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15