./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe004_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.2024-06-19_11-23-25.files/mutex-meet-rel/safe004_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe004_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe004_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-7724a2d-m [2024-06-28 00:09:32,913 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:09:32,995 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:09:32,999 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:09:33,000 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:09:33,024 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:09:33,024 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:09:33,025 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:09:33,025 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:09:33,028 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:09:33,028 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:09:33,028 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:09:33,029 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:09:33,030 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:09:33,030 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:09:33,031 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:09:33,031 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:09:33,031 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:09:33,031 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:09:33,031 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:09:33,032 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:09:33,032 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:09:33,033 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:09:33,033 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:09:33,033 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:09:33,034 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:09:33,034 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:09:33,034 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:09:33,034 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:09:33,035 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:09:33,035 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:09:33,036 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:09:33,036 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:09:33,036 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:09:33,036 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:09:33,036 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:09:33,036 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:09:33,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:09:33,037 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:09:33,037 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:09:33,037 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:09:33,037 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:09:33,037 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:09:33,038 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 00:09:33,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:09:33,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:09:33,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:09:33,271 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:09:33,272 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:09:33,273 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe004_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-28 00:09:33,332 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:09:33,336 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:09:33,337 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 00:09:34,300 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:09:34,526 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:09:34,527 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 00:09:34,540 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c0b94970/8490578939d94ec9a80a415e7185595a/FLAGdbacd7f7b [2024-06-28 00:09:34,555 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c0b94970/8490578939d94ec9a80a415e7185595a [2024-06-28 00:09:34,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:09:34,557 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:09:34,559 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:09:34,559 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:09:34,563 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:09:34,563 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:09:33" (1/2) ... [2024-06-28 00:09:34,564 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72198037 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:09:34, skipping insertion in model container [2024-06-28 00:09:34,564 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:09:33" (1/2) ... [2024-06-28 00:09:34,566 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@29edeb85 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:09:34, skipping insertion in model container [2024-06-28 00:09:34,567 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:09:34" (2/2) ... [2024-06-28 00:09:34,567 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72198037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:09:34, skipping insertion in model container [2024-06-28 00:09:34,568 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:09:34" (2/2) ... [2024-06-28 00:09:34,568 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:09:34,596 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:09:34,597 INFO L97 edCorrectnessWitness]: Location invariant before [L847-L847] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )y$flush_delayed) + (long long )y$r_buff0_thd1 >= 0LL && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd1 >= 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_buff0_used >= 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_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0_used >= 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_buff0_used >= 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_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0_used >= 0LL) && (2LL - (long long )y$w_buff0) + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0_used >= 0LL) && (long long )x + (long long )y$r_buff0_thd1 >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff0_used >= 0LL) && (long long )y + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff0_used >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff0_thd3 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd3 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd3 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd3 + (long long )y$w_buff0_used >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$r_buff0_thd1) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )y$r_buff0_thd1) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$r_buff1_thd1) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$w_buff0) - (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$w_buff0) - (long long )y$w_buff1_used >= 0LL) && (2LL + (long long )y$w_buff0_used) - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff0_thd3 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) [2024-06-28 00:09:34,598 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )y$flush_delayed) + (long long )y$r_buff0_thd1 >= 0LL && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0_used >= 0LL) && (2LL - (long long )y$w_buff0) + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0_used >= 0LL) && (long long )x + (long long )y$r_buff0_thd1 >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff0_used >= 0LL) && (long long )y + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff0_used >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff0_thd3 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd3 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd3 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd3 + (long long )y$w_buff0_used >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$r_buff0_thd1) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )y$r_buff0_thd1) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$r_buff1_thd1) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$w_buff0) - (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$w_buff0) - (long long )y$w_buff1_used >= 0LL) && (2LL + (long long )y$w_buff0_used) - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff0_thd3 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) [2024-06-28 00:09:34,598 INFO L97 edCorrectnessWitness]: Location invariant before [L850-L850] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )y$flush_delayed) + (long long )y$r_buff0_thd1 >= 0LL && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0_used >= 0LL) && (2LL - (long long )y$w_buff0) + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )y$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0_used >= 0LL) && (long long )x + (long long )y$r_buff0_thd1 >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff0_used >= 0LL) && (long long )y + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff0_used >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff0_thd3 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd3 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd3 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd3 + (long long )y$w_buff0_used >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$r_buff0_thd1) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )y$r_buff0_thd1) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$r_buff1_thd1) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$w_buff0) - (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$w_buff0) - (long long )y$w_buff1_used >= 0LL) && (2LL + (long long )y$w_buff0_used) - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff0_thd3 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) [2024-06-28 00:09:34,598 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:09:34,598 INFO L106 edCorrectnessWitness]: ghost_update [L845-L845] multithreaded = 1; [2024-06-28 00:09:34,644 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:09:34,938 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:09:34,945 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:09:35,136 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:09:35,163 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:09:35,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:09:35 WrapperNode [2024-06-28 00:09:35,164 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:09:35,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:09:35,165 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:09:35,165 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:09:35,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:09:35" (1/1) ... [2024-06-28 00:09:35,189 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:09:35" (1/1) ... [2024-06-28 00:09:35,237 INFO L138 Inliner]: procedures = 175, calls = 43, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 143 [2024-06-28 00:09:35,238 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:09:35,238 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:09:35,238 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:09:35,239 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:09:35,247 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:09:35" (1/1) ... [2024-06-28 00:09:35,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:09:35" (1/1) ... [2024-06-28 00:09:35,252 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:09:35" (1/1) ... [2024-06-28 00:09:35,272 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]. [2024-06-28 00:09:35,272 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:09:35" (1/1) ... [2024-06-28 00:09:35,272 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:09:35" (1/1) ... [2024-06-28 00:09:35,282 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:09:35" (1/1) ... [2024-06-28 00:09:35,284 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:09:35" (1/1) ... [2024-06-28 00:09:35,287 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:09:35" (1/1) ... [2024-06-28 00:09:35,290 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:09:35" (1/1) ... [2024-06-28 00:09:35,295 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:09:35,296 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:09:35,296 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:09:35,296 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:09:35,297 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:09:35" (1/1) ... [2024-06-28 00:09:35,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:09:35,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:09:35,322 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) [2024-06-28 00:09:35,344 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 [2024-06-28 00:09:35,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 00:09:35,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:09:35,352 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 00:09:35,352 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 00:09:35,352 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 00:09:35,352 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 00:09:35,353 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 00:09:35,353 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 00:09:35,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:09:35,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 00:09:35,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:09:35,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:09:35,355 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 00:09:35,475 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:09:35,477 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:09:35,996 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:09:35,997 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:09:36,181 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:09:36,181 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 00:09:36,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:09:36 BoogieIcfgContainer [2024-06-28 00:09:36,182 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:09:36,183 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:09:36,184 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:09:36,186 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:09:36,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:09:33" (1/4) ... [2024-06-28 00:09:36,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f1a4874 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:09:36, skipping insertion in model container [2024-06-28 00:09:36,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:09:34" (2/4) ... [2024-06-28 00:09:36,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f1a4874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:09:36, skipping insertion in model container [2024-06-28 00:09:36,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:09:35" (3/4) ... [2024-06-28 00:09:36,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f1a4874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:09:36, skipping insertion in model container [2024-06-28 00:09:36,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:09:36" (4/4) ... [2024-06-28 00:09:36,190 INFO L112 eAbstractionObserver]: Analyzing ICFG safe004_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 00:09:36,203 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:09:36,203 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 00:09:36,204 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:09:36,246 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 00:09:36,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 40 transitions, 92 flow [2024-06-28 00:09:36,293 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2024-06-28 00:09:36,293 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:09:36,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 37 events. 0/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 00:09:36,295 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 40 transitions, 92 flow [2024-06-28 00:09:36,298 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2024-06-28 00:09:36,310 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:09:36,316 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;@15dcdb5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:09:36,317 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 00:09:36,320 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:09:36,321 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 00:09:36,321 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:09:36,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:36,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 00:09:36,322 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:09:36,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:36,329 INFO L85 PathProgramCache]: Analyzing trace with hash 440169185, now seen corresponding path program 1 times [2024-06-28 00:09:36,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:36,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809411560] [2024-06-28 00:09:36,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:36,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:37,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:37,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:37,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809411560] [2024-06-28 00:09:37,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809411560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:37,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:37,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:09:37,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224937443] [2024-06-28 00:09:37,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:37,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:09:37,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:37,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:09:37,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:09:37,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 00:09:37,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 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) [2024-06-28 00:09:37,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:37,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 00:09:37,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:38,092 INFO L124 PetriNetUnfolderBase]: 1650/2465 cut-off events. [2024-06-28 00:09:38,092 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-28 00:09:38,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5017 conditions, 2465 events. 1650/2465 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11607 event pairs, 881 based on Foata normal form. 4/2429 useless extension candidates. Maximal degree in co-relation 5005. Up to 2444 conditions per place. [2024-06-28 00:09:38,106 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 36 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-06-28 00:09:38,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 44 transitions, 183 flow [2024-06-28 00:09:38,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:09:38,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:09:38,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-06-28 00:09:38,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-28 00:09:38,116 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 3 states and 70 transitions. [2024-06-28 00:09:38,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 44 transitions, 183 flow [2024-06-28 00:09:38,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 178 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 00:09:38,119 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 98 flow [2024-06-28 00:09:38,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2024-06-28 00:09:38,123 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2024-06-28 00:09:38,123 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 98 flow [2024-06-28 00:09:38,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 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) [2024-06-28 00:09:38,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:38,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:38,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:09:38,124 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:09:38,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:38,124 INFO L85 PathProgramCache]: Analyzing trace with hash 2096760960, now seen corresponding path program 1 times [2024-06-28 00:09:38,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:38,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422650924] [2024-06-28 00:09:38,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:38,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:38,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:38,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:38,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422650924] [2024-06-28 00:09:38,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422650924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:38,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:38,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:09:38,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178400037] [2024-06-28 00:09:38,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:38,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:09:38,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:38,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:09:38,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:09:39,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 00:09:39,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:39,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:39,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 00:09:39,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:39,402 INFO L124 PetriNetUnfolderBase]: 1643/2455 cut-off events. [2024-06-28 00:09:39,402 INFO L125 PetriNetUnfolderBase]: For 391/391 co-relation queries the response was YES. [2024-06-28 00:09:39,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5635 conditions, 2455 events. 1643/2455 cut-off events. For 391/391 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11528 event pairs, 759 based on Foata normal form. 6/2461 useless extension candidates. Maximal degree in co-relation 5623. Up to 2409 conditions per place. [2024-06-28 00:09:39,414 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 48 selfloop transitions, 7 changer transitions 0/59 dead transitions. [2024-06-28 00:09:39,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 59 transitions, 276 flow [2024-06-28 00:09:39,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:09:39,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:09:39,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-06-28 00:09:39,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56875 [2024-06-28 00:09:39,418 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 98 flow. Second operand 4 states and 91 transitions. [2024-06-28 00:09:39,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 59 transitions, 276 flow [2024-06-28 00:09:39,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 59 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 00:09:39,422 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 154 flow [2024-06-28 00:09:39,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-06-28 00:09:39,422 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-06-28 00:09:39,422 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 154 flow [2024-06-28 00:09:39,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:39,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:39,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:39,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:09:39,426 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:09:39,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:39,432 INFO L85 PathProgramCache]: Analyzing trace with hash 575081838, now seen corresponding path program 1 times [2024-06-28 00:09:39,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:39,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666036790] [2024-06-28 00:09:39,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:39,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:40,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:40,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:40,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666036790] [2024-06-28 00:09:40,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666036790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:40,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:40,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:09:40,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532786436] [2024-06-28 00:09:40,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:40,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:09:40,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:40,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:09:40,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:09:40,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 00:09:40,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:40,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:40,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 00:09:40,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:40,892 INFO L124 PetriNetUnfolderBase]: 1687/2519 cut-off events. [2024-06-28 00:09:40,892 INFO L125 PetriNetUnfolderBase]: For 1272/1272 co-relation queries the response was YES. [2024-06-28 00:09:40,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6539 conditions, 2519 events. 1687/2519 cut-off events. For 1272/1272 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 11894 event pairs, 580 based on Foata normal form. 11/2530 useless extension candidates. Maximal degree in co-relation 6524. Up to 2308 conditions per place. [2024-06-28 00:09:40,905 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 64 selfloop transitions, 16 changer transitions 0/84 dead transitions. [2024-06-28 00:09:40,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 84 transitions, 452 flow [2024-06-28 00:09:40,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:09:40,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:09:40,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-28 00:09:40,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.605 [2024-06-28 00:09:40,910 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 154 flow. Second operand 5 states and 121 transitions. [2024-06-28 00:09:40,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 84 transitions, 452 flow [2024-06-28 00:09:40,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 84 transitions, 442 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 00:09:40,915 INFO L231 Difference]: Finished difference. Result has 51 places, 51 transitions, 257 flow [2024-06-28 00:09:40,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=257, PETRI_PLACES=51, PETRI_TRANSITIONS=51} [2024-06-28 00:09:40,916 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-06-28 00:09:40,916 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 51 transitions, 257 flow [2024-06-28 00:09:40,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:40,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:40,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:40,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:09:40,917 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:09:40,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:40,918 INFO L85 PathProgramCache]: Analyzing trace with hash -238910817, now seen corresponding path program 1 times [2024-06-28 00:09:40,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:40,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221765407] [2024-06-28 00:09:40,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:40,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:40,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:42,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:42,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:42,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221765407] [2024-06-28 00:09:42,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221765407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:42,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:42,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:09:42,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821654699] [2024-06-28 00:09:42,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:42,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:09:42,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:42,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:09:42,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:09:42,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 00:09:42,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 51 transitions, 257 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:42,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:42,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 00:09:42,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:43,193 INFO L124 PetriNetUnfolderBase]: 1731/2582 cut-off events. [2024-06-28 00:09:43,194 INFO L125 PetriNetUnfolderBase]: For 3121/3121 co-relation queries the response was YES. [2024-06-28 00:09:43,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7996 conditions, 2582 events. 1731/2582 cut-off events. For 3121/3121 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12140 event pairs, 447 based on Foata normal form. 11/2593 useless extension candidates. Maximal degree in co-relation 7977. Up to 2319 conditions per place. [2024-06-28 00:09:43,208 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 72 selfloop transitions, 22 changer transitions 0/98 dead transitions. [2024-06-28 00:09:43,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 98 transitions, 605 flow [2024-06-28 00:09:43,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:09:43,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:09:43,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-28 00:09:43,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-28 00:09:43,210 INFO L175 Difference]: Start difference. First operand has 51 places, 51 transitions, 257 flow. Second operand 6 states and 144 transitions. [2024-06-28 00:09:43,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 98 transitions, 605 flow [2024-06-28 00:09:43,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 98 transitions, 597 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-28 00:09:43,214 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 344 flow [2024-06-28 00:09:43,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=344, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2024-06-28 00:09:43,215 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2024-06-28 00:09:43,215 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 344 flow [2024-06-28 00:09:43,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:43,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:43,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:43,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 00:09:43,216 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:09:43,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:43,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1183700845, now seen corresponding path program 1 times [2024-06-28 00:09:43,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:43,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689699868] [2024-06-28 00:09:43,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:43,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:44,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:44,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:44,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689699868] [2024-06-28 00:09:44,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689699868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:44,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:44,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:09:44,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47294410] [2024-06-28 00:09:44,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:44,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:09:44,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:44,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:09:44,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:09:44,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 00:09:44,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 344 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 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) [2024-06-28 00:09:44,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:44,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 00:09:44,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:45,458 INFO L124 PetriNetUnfolderBase]: 1847/2766 cut-off events. [2024-06-28 00:09:45,459 INFO L125 PetriNetUnfolderBase]: For 5226/5226 co-relation queries the response was YES. [2024-06-28 00:09:45,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9774 conditions, 2766 events. 1847/2766 cut-off events. For 5226/5226 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 13253 event pairs, 316 based on Foata normal form. 34/2800 useless extension candidates. Maximal degree in co-relation 9752. Up to 2337 conditions per place. [2024-06-28 00:09:45,473 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 80 selfloop transitions, 26 changer transitions 0/110 dead transitions. [2024-06-28 00:09:45,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 110 transitions, 758 flow [2024-06-28 00:09:45,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:09:45,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:09:45,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 00:09:45,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-06-28 00:09:45,475 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 344 flow. Second operand 7 states and 165 transitions. [2024-06-28 00:09:45,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 110 transitions, 758 flow [2024-06-28 00:09:45,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 110 transitions, 707 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 00:09:45,479 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 377 flow [2024-06-28 00:09:45,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=377, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2024-06-28 00:09:45,480 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2024-06-28 00:09:45,480 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 377 flow [2024-06-28 00:09:45,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 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) [2024-06-28 00:09:45,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:45,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:45,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 00:09:45,481 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:09:45,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:45,481 INFO L85 PathProgramCache]: Analyzing trace with hash 257532158, now seen corresponding path program 1 times [2024-06-28 00:09:45,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:45,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321379136] [2024-06-28 00:09:45,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:45,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:46,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:46,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:46,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321379136] [2024-06-28 00:09:46,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321379136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:46,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:46,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:09:46,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937907] [2024-06-28 00:09:46,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:46,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:09:46,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:46,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:09:46,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:09:46,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:09:46,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 377 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:46,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:46,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:09:46,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:47,314 INFO L124 PetriNetUnfolderBase]: 1833/2765 cut-off events. [2024-06-28 00:09:47,314 INFO L125 PetriNetUnfolderBase]: For 7037/7037 co-relation queries the response was YES. [2024-06-28 00:09:47,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10464 conditions, 2765 events. 1833/2765 cut-off events. For 7037/7037 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 13012 event pairs, 1048 based on Foata normal form. 5/2770 useless extension candidates. Maximal degree in co-relation 10440. Up to 2701 conditions per place. [2024-06-28 00:09:47,329 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 62 selfloop transitions, 14 changer transitions 0/79 dead transitions. [2024-06-28 00:09:47,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 79 transitions, 619 flow [2024-06-28 00:09:47,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:09:47,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:09:47,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-06-28 00:09:47,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-28 00:09:47,331 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 377 flow. Second operand 5 states and 88 transitions. [2024-06-28 00:09:47,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 79 transitions, 619 flow [2024-06-28 00:09:47,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 79 transitions, 569 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-28 00:09:47,335 INFO L231 Difference]: Finished difference. Result has 60 places, 65 transitions, 419 flow [2024-06-28 00:09:47,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=419, PETRI_PLACES=60, PETRI_TRANSITIONS=65} [2024-06-28 00:09:47,335 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 19 predicate places. [2024-06-28 00:09:47,336 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 65 transitions, 419 flow [2024-06-28 00:09:47,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:47,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:47,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:47,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 00:09:47,340 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:09:47,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:47,341 INFO L85 PathProgramCache]: Analyzing trace with hash -606667320, now seen corresponding path program 1 times [2024-06-28 00:09:47,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:47,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920220933] [2024-06-28 00:09:47,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:47,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:48,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:48,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:48,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920220933] [2024-06-28 00:09:48,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920220933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:48,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:48,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:09:48,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88143094] [2024-06-28 00:09:48,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:48,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:09:48,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:48,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:09:48,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:09:48,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:09:48,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 65 transitions, 419 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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) [2024-06-28 00:09:48,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:48,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:09:48,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:49,357 INFO L124 PetriNetUnfolderBase]: 1823/2749 cut-off events. [2024-06-28 00:09:49,357 INFO L125 PetriNetUnfolderBase]: For 8316/8316 co-relation queries the response was YES. [2024-06-28 00:09:49,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10657 conditions, 2749 events. 1823/2749 cut-off events. For 8316/8316 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12878 event pairs, 1032 based on Foata normal form. 4/2753 useless extension candidates. Maximal degree in co-relation 10629. Up to 2693 conditions per place. [2024-06-28 00:09:49,370 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 73 selfloop transitions, 13 changer transitions 0/89 dead transitions. [2024-06-28 00:09:49,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 89 transitions, 699 flow [2024-06-28 00:09:49,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:09:49,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:09:49,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-06-28 00:09:49,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4041666666666667 [2024-06-28 00:09:49,371 INFO L175 Difference]: Start difference. First operand has 60 places, 65 transitions, 419 flow. Second operand 6 states and 97 transitions. [2024-06-28 00:09:49,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 89 transitions, 699 flow [2024-06-28 00:09:49,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 89 transitions, 675 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 00:09:49,377 INFO L231 Difference]: Finished difference. Result has 66 places, 74 transitions, 523 flow [2024-06-28 00:09:49,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=523, PETRI_PLACES=66, PETRI_TRANSITIONS=74} [2024-06-28 00:09:49,377 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 25 predicate places. [2024-06-28 00:09:49,378 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 74 transitions, 523 flow [2024-06-28 00:09:49,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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) [2024-06-28 00:09:49,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:49,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:49,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:09:49,378 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:09:49,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:49,379 INFO L85 PathProgramCache]: Analyzing trace with hash 740538047, now seen corresponding path program 1 times [2024-06-28 00:09:49,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:49,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385842721] [2024-06-28 00:09:49,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:49,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:50,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:50,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:50,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385842721] [2024-06-28 00:09:50,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385842721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:50,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:50,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:09:50,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388018836] [2024-06-28 00:09:50,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:50,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:09:50,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:50,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:09:50,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:09:50,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:09:50,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 74 transitions, 523 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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) [2024-06-28 00:09:50,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:50,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:09:50,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:51,397 INFO L124 PetriNetUnfolderBase]: 1902/2855 cut-off events. [2024-06-28 00:09:51,397 INFO L125 PetriNetUnfolderBase]: For 9263/9269 co-relation queries the response was YES. [2024-06-28 00:09:51,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11718 conditions, 2855 events. 1902/2855 cut-off events. For 9263/9269 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 13326 event pairs, 657 based on Foata normal form. 10/2865 useless extension candidates. Maximal degree in co-relation 11685. Up to 2705 conditions per place. [2024-06-28 00:09:51,412 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 93 selfloop transitions, 25 changer transitions 0/121 dead transitions. [2024-06-28 00:09:51,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 121 transitions, 1005 flow [2024-06-28 00:09:51,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:09:51,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:09:51,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-28 00:09:51,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 00:09:51,414 INFO L175 Difference]: Start difference. First operand has 66 places, 74 transitions, 523 flow. Second operand 6 states and 115 transitions. [2024-06-28 00:09:51,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 121 transitions, 1005 flow [2024-06-28 00:09:51,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 121 transitions, 988 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-28 00:09:51,422 INFO L231 Difference]: Finished difference. Result has 73 places, 92 transitions, 708 flow [2024-06-28 00:09:51,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=708, PETRI_PLACES=73, PETRI_TRANSITIONS=92} [2024-06-28 00:09:51,422 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 32 predicate places. [2024-06-28 00:09:51,422 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 92 transitions, 708 flow [2024-06-28 00:09:51,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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) [2024-06-28 00:09:51,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:51,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:51,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 00:09:51,423 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:09:51,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:51,423 INFO L85 PathProgramCache]: Analyzing trace with hash -2139276307, now seen corresponding path program 2 times [2024-06-28 00:09:51,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:51,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233080599] [2024-06-28 00:09:51,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:51,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:52,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:52,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:52,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233080599] [2024-06-28 00:09:52,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233080599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:52,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:52,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:09:52,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863901255] [2024-06-28 00:09:52,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:52,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:09:52,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:52,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:09:52,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:09:52,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:09:52,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 92 transitions, 708 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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) [2024-06-28 00:09:52,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:52,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:09:52,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:52,885 INFO L124 PetriNetUnfolderBase]: 1947/2937 cut-off events. [2024-06-28 00:09:52,885 INFO L125 PetriNetUnfolderBase]: For 12430/12432 co-relation queries the response was YES. [2024-06-28 00:09:52,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12804 conditions, 2937 events. 1947/2937 cut-off events. For 12430/12432 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 13888 event pairs, 982 based on Foata normal form. 8/2945 useless extension candidates. Maximal degree in co-relation 12767. Up to 2788 conditions per place. [2024-06-28 00:09:52,900 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 92 selfloop transitions, 32 changer transitions 0/127 dead transitions. [2024-06-28 00:09:52,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 127 transitions, 1212 flow [2024-06-28 00:09:52,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:09:52,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:09:52,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-28 00:09:52,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42916666666666664 [2024-06-28 00:09:52,902 INFO L175 Difference]: Start difference. First operand has 73 places, 92 transitions, 708 flow. Second operand 6 states and 103 transitions. [2024-06-28 00:09:52,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 127 transitions, 1212 flow [2024-06-28 00:09:52,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 127 transitions, 1177 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-06-28 00:09:52,914 INFO L231 Difference]: Finished difference. Result has 79 places, 109 transitions, 956 flow [2024-06-28 00:09:52,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=956, PETRI_PLACES=79, PETRI_TRANSITIONS=109} [2024-06-28 00:09:52,915 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 38 predicate places. [2024-06-28 00:09:52,915 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 109 transitions, 956 flow [2024-06-28 00:09:52,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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) [2024-06-28 00:09:52,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:52,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:52,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 00:09:52,916 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:09:52,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:52,916 INFO L85 PathProgramCache]: Analyzing trace with hash -2132639827, now seen corresponding path program 3 times [2024-06-28 00:09:52,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:52,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129358997] [2024-06-28 00:09:52,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:52,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:53,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:53,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:53,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129358997] [2024-06-28 00:09:53,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129358997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:53,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:53,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:09:53,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573367874] [2024-06-28 00:09:53,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:53,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:09:53,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:53,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:09:53,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:09:53,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:09:53,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 109 transitions, 956 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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) [2024-06-28 00:09:53,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:53,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:09:53,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:54,276 INFO L124 PetriNetUnfolderBase]: 1927/2903 cut-off events. [2024-06-28 00:09:54,276 INFO L125 PetriNetUnfolderBase]: For 14260/14260 co-relation queries the response was YES. [2024-06-28 00:09:54,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13134 conditions, 2903 events. 1927/2903 cut-off events. For 14260/14260 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 13683 event pairs, 985 based on Foata normal form. 3/2906 useless extension candidates. Maximal degree in co-relation 13093. Up to 2848 conditions per place. [2024-06-28 00:09:54,291 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 108 selfloop transitions, 15 changer transitions 0/126 dead transitions. [2024-06-28 00:09:54,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 126 transitions, 1282 flow [2024-06-28 00:09:54,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:09:54,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:09:54,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-06-28 00:09:54,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 00:09:54,293 INFO L175 Difference]: Start difference. First operand has 79 places, 109 transitions, 956 flow. Second operand 6 states and 96 transitions. [2024-06-28 00:09:54,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 126 transitions, 1282 flow [2024-06-28 00:09:54,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 126 transitions, 1241 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-28 00:09:54,309 INFO L231 Difference]: Finished difference. Result has 83 places, 112 transitions, 997 flow [2024-06-28 00:09:54,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=923, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=997, PETRI_PLACES=83, PETRI_TRANSITIONS=112} [2024-06-28 00:09:54,310 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 42 predicate places. [2024-06-28 00:09:54,310 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 112 transitions, 997 flow [2024-06-28 00:09:54,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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) [2024-06-28 00:09:54,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:54,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:54,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 00:09:54,311 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:09:54,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:54,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1481843991, now seen corresponding path program 1 times [2024-06-28 00:09:54,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:54,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791949347] [2024-06-28 00:09:54,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:54,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:55,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:55,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:55,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791949347] [2024-06-28 00:09:55,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791949347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:55,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:55,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:09:55,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355980753] [2024-06-28 00:09:55,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:55,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:09:55,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:55,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:09:55,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:09:55,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:09:55,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 112 transitions, 997 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-28 00:09:55,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:55,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:09:55,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:56,357 INFO L124 PetriNetUnfolderBase]: 2027/3038 cut-off events. [2024-06-28 00:09:56,357 INFO L125 PetriNetUnfolderBase]: For 16043/16051 co-relation queries the response was YES. [2024-06-28 00:09:56,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13940 conditions, 3038 events. 2027/3038 cut-off events. For 16043/16051 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14129 event pairs, 622 based on Foata normal form. 12/3049 useless extension candidates. Maximal degree in co-relation 13897. Up to 2699 conditions per place. [2024-06-28 00:09:56,374 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 107 selfloop transitions, 50 changer transitions 0/160 dead transitions. [2024-06-28 00:09:56,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 160 transitions, 1594 flow [2024-06-28 00:09:56,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:09:56,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:09:56,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 00:09:56,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 00:09:56,376 INFO L175 Difference]: Start difference. First operand has 83 places, 112 transitions, 997 flow. Second operand 8 states and 144 transitions. [2024-06-28 00:09:56,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 160 transitions, 1594 flow [2024-06-28 00:09:56,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 160 transitions, 1557 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 00:09:56,394 INFO L231 Difference]: Finished difference. Result has 88 places, 126 transitions, 1176 flow [2024-06-28 00:09:56,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=967, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1176, PETRI_PLACES=88, PETRI_TRANSITIONS=126} [2024-06-28 00:09:56,395 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 47 predicate places. [2024-06-28 00:09:56,395 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 126 transitions, 1176 flow [2024-06-28 00:09:56,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-28 00:09:56,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:56,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:56,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 00:09:56,396 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:09:56,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:56,396 INFO L85 PathProgramCache]: Analyzing trace with hash -786240805, now seen corresponding path program 2 times [2024-06-28 00:09:56,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:56,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679761724] [2024-06-28 00:09:56,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:56,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:57,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:57,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:57,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679761724] [2024-06-28 00:09:57,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679761724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:57,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:57,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:09:57,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499466689] [2024-06-28 00:09:57,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:57,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:09:57,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:57,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:09:57,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:09:57,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:09:57,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 126 transitions, 1176 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-28 00:09:57,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:57,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:09:57,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:58,067 INFO L124 PetriNetUnfolderBase]: 2151/3230 cut-off events. [2024-06-28 00:09:58,067 INFO L125 PetriNetUnfolderBase]: For 21395/21397 co-relation queries the response was YES. [2024-06-28 00:09:58,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15979 conditions, 3230 events. 2151/3230 cut-off events. For 21395/21397 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 15211 event pairs, 955 based on Foata normal form. 6/3235 useless extension candidates. Maximal degree in co-relation 15934. Up to 2850 conditions per place. [2024-06-28 00:09:58,089 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 114 selfloop transitions, 56 changer transitions 0/173 dead transitions. [2024-06-28 00:09:58,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 173 transitions, 1871 flow [2024-06-28 00:09:58,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:09:58,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:09:58,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-28 00:09:58,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-28 00:09:58,091 INFO L175 Difference]: Start difference. First operand has 88 places, 126 transitions, 1176 flow. Second operand 7 states and 125 transitions. [2024-06-28 00:09:58,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 173 transitions, 1871 flow [2024-06-28 00:09:58,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 173 transitions, 1804 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-28 00:09:58,127 INFO L231 Difference]: Finished difference. Result has 93 places, 146 transitions, 1450 flow [2024-06-28 00:09:58,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1450, PETRI_PLACES=93, PETRI_TRANSITIONS=146} [2024-06-28 00:09:58,129 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 52 predicate places. [2024-06-28 00:09:58,129 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 146 transitions, 1450 flow [2024-06-28 00:09:58,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-28 00:09:58,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:58,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:58,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 00:09:58,132 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:09:58,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:58,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1329927319, now seen corresponding path program 3 times [2024-06-28 00:09:58,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:58,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303103135] [2024-06-28 00:09:58,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:58,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:59,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:59,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:59,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303103135] [2024-06-28 00:09:59,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303103135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:59,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:59,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:09:59,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186598822] [2024-06-28 00:09:59,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:59,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:09:59,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:59,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:09:59,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:09:59,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:09:59,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 146 transitions, 1450 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-28 00:09:59,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:59,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:09:59,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:59,611 INFO L124 PetriNetUnfolderBase]: 2169/3251 cut-off events. [2024-06-28 00:09:59,612 INFO L125 PetriNetUnfolderBase]: For 25619/25619 co-relation queries the response was YES. [2024-06-28 00:09:59,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17220 conditions, 3251 events. 2169/3251 cut-off events. For 25619/25619 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 15373 event pairs, 958 based on Foata normal form. 3/3254 useless extension candidates. Maximal degree in co-relation 17172. Up to 3177 conditions per place. [2024-06-28 00:09:59,631 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 147 selfloop transitions, 21 changer transitions 0/171 dead transitions. [2024-06-28 00:09:59,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 171 transitions, 1922 flow [2024-06-28 00:09:59,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:09:59,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:09:59,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 111 transitions. [2024-06-28 00:09:59,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3964285714285714 [2024-06-28 00:09:59,633 INFO L175 Difference]: Start difference. First operand has 93 places, 146 transitions, 1450 flow. Second operand 7 states and 111 transitions. [2024-06-28 00:09:59,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 171 transitions, 1922 flow [2024-06-28 00:09:59,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 171 transitions, 1887 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-28 00:09:59,664 INFO L231 Difference]: Finished difference. Result has 98 places, 153 transitions, 1550 flow [2024-06-28 00:09:59,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1417, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1550, PETRI_PLACES=98, PETRI_TRANSITIONS=153} [2024-06-28 00:09:59,665 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 57 predicate places. [2024-06-28 00:09:59,665 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 153 transitions, 1550 flow [2024-06-28 00:09:59,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-28 00:09:59,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:59,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:59,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 00:09:59,665 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:09:59,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:59,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1108045129, now seen corresponding path program 4 times [2024-06-28 00:09:59,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:59,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143508557] [2024-06-28 00:09:59,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:59,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:00,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:00,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:00,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143508557] [2024-06-28 00:10:00,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143508557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:00,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:00,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:10:00,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198252538] [2024-06-28 00:10:00,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:00,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:10:00,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:00,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:10:00,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:10:00,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:10:00,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 153 transitions, 1550 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-28 00:10:00,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:00,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:10:00,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:01,354 INFO L124 PetriNetUnfolderBase]: 2161/3241 cut-off events. [2024-06-28 00:10:01,354 INFO L125 PetriNetUnfolderBase]: For 28454/28454 co-relation queries the response was YES. [2024-06-28 00:10:01,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17584 conditions, 3241 events. 2161/3241 cut-off events. For 28454/28454 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 15253 event pairs, 950 based on Foata normal form. 3/3244 useless extension candidates. Maximal degree in co-relation 17534. Up to 3127 conditions per place. [2024-06-28 00:10:01,372 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 147 selfloop transitions, 34 changer transitions 0/184 dead transitions. [2024-06-28 00:10:01,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 184 transitions, 2161 flow [2024-06-28 00:10:01,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:10:01,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:10:01,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-28 00:10:01,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-06-28 00:10:01,374 INFO L175 Difference]: Start difference. First operand has 98 places, 153 transitions, 1550 flow. Second operand 7 states and 116 transitions. [2024-06-28 00:10:01,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 184 transitions, 2161 flow [2024-06-28 00:10:01,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 184 transitions, 2105 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 00:10:01,401 INFO L231 Difference]: Finished difference. Result has 103 places, 163 transitions, 1725 flow [2024-06-28 00:10:01,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1494, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1725, PETRI_PLACES=103, PETRI_TRANSITIONS=163} [2024-06-28 00:10:01,402 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 62 predicate places. [2024-06-28 00:10:01,402 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 163 transitions, 1725 flow [2024-06-28 00:10:01,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-28 00:10:01,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:01,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:01,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 00:10:01,403 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:10:01,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:01,403 INFO L85 PathProgramCache]: Analyzing trace with hash -608863207, now seen corresponding path program 1 times [2024-06-28 00:10:01,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:01,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846228486] [2024-06-28 00:10:01,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:01,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:02,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:02,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:02,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846228486] [2024-06-28 00:10:02,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846228486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:02,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:02,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:10:02,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761160878] [2024-06-28 00:10:02,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:02,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:10:02,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:02,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:10:02,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:10:02,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:10:02,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 163 transitions, 1725 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:02,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:02,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:10:02,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:03,612 INFO L124 PetriNetUnfolderBase]: 2153/3227 cut-off events. [2024-06-28 00:10:03,612 INFO L125 PetriNetUnfolderBase]: For 31901/31901 co-relation queries the response was YES. [2024-06-28 00:10:03,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17949 conditions, 3227 events. 2153/3227 cut-off events. For 31901/31901 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 15167 event pairs, 939 based on Foata normal form. 4/3231 useless extension candidates. Maximal degree in co-relation 17896. Up to 3147 conditions per place. [2024-06-28 00:10:03,630 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 164 selfloop transitions, 17 changer transitions 0/184 dead transitions. [2024-06-28 00:10:03,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 184 transitions, 2173 flow [2024-06-28 00:10:03,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:10:03,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:10:03,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 118 transitions. [2024-06-28 00:10:03,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-28 00:10:03,639 INFO L175 Difference]: Start difference. First operand has 103 places, 163 transitions, 1725 flow. Second operand 8 states and 118 transitions. [2024-06-28 00:10:03,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 184 transitions, 2173 flow [2024-06-28 00:10:03,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 184 transitions, 2118 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 00:10:03,673 INFO L231 Difference]: Finished difference. Result has 108 places, 165 transitions, 1737 flow [2024-06-28 00:10:03,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1670, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1737, PETRI_PLACES=108, PETRI_TRANSITIONS=165} [2024-06-28 00:10:03,674 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 67 predicate places. [2024-06-28 00:10:03,674 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 165 transitions, 1737 flow [2024-06-28 00:10:03,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:03,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:03,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:03,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 00:10:03,674 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:10:03,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:03,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1019069454, now seen corresponding path program 1 times [2024-06-28 00:10:03,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:03,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193096215] [2024-06-28 00:10:03,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:03,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:05,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:05,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:05,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193096215] [2024-06-28 00:10:05,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193096215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:05,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:05,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:10:05,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757848511] [2024-06-28 00:10:05,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:05,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:10:05,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:05,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:10:05,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:10:05,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:10:05,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 165 transitions, 1737 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:05,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:05,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:10:05,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:06,250 INFO L124 PetriNetUnfolderBase]: 2196/3284 cut-off events. [2024-06-28 00:10:06,250 INFO L125 PetriNetUnfolderBase]: For 35647/35661 co-relation queries the response was YES. [2024-06-28 00:10:06,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18603 conditions, 3284 events. 2196/3284 cut-off events. For 35647/35661 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 15528 event pairs, 618 based on Foata normal form. 14/3298 useless extension candidates. Maximal degree in co-relation 18548. Up to 2624 conditions per place. [2024-06-28 00:10:06,273 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 132 selfloop transitions, 73 changer transitions 0/208 dead transitions. [2024-06-28 00:10:06,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 208 transitions, 2491 flow [2024-06-28 00:10:06,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:10:06,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:10:06,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-28 00:10:06,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-06-28 00:10:06,275 INFO L175 Difference]: Start difference. First operand has 108 places, 165 transitions, 1737 flow. Second operand 7 states and 136 transitions. [2024-06-28 00:10:06,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 208 transitions, 2491 flow [2024-06-28 00:10:06,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 208 transitions, 2427 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 00:10:06,310 INFO L231 Difference]: Finished difference. Result has 111 places, 178 transitions, 2032 flow [2024-06-28 00:10:06,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1673, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2032, PETRI_PLACES=111, PETRI_TRANSITIONS=178} [2024-06-28 00:10:06,311 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 70 predicate places. [2024-06-28 00:10:06,311 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 178 transitions, 2032 flow [2024-06-28 00:10:06,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:06,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:06,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:06,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 00:10:06,312 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:10:06,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:06,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1016067414, now seen corresponding path program 2 times [2024-06-28 00:10:06,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:06,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411305810] [2024-06-28 00:10:06,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:06,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:07,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:07,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:07,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411305810] [2024-06-28 00:10:07,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411305810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:07,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:07,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:10:07,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086606322] [2024-06-28 00:10:07,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:07,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:10:07,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:07,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:10:07,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:10:08,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:10:08,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 178 transitions, 2032 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:08,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:08,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:10:08,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:08,743 INFO L124 PetriNetUnfolderBase]: 2232/3336 cut-off events. [2024-06-28 00:10:08,743 INFO L125 PetriNetUnfolderBase]: For 42272/42290 co-relation queries the response was YES. [2024-06-28 00:10:08,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20270 conditions, 3336 events. 2232/3336 cut-off events. For 42272/42290 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 15767 event pairs, 586 based on Foata normal form. 22/3358 useless extension candidates. Maximal degree in co-relation 20214. Up to 2765 conditions per place. [2024-06-28 00:10:08,762 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 128 selfloop transitions, 83 changer transitions 0/214 dead transitions. [2024-06-28 00:10:08,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 214 transitions, 2793 flow [2024-06-28 00:10:08,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:10:08,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:10:08,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-28 00:10:08,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-28 00:10:08,764 INFO L175 Difference]: Start difference. First operand has 111 places, 178 transitions, 2032 flow. Second operand 7 states and 135 transitions. [2024-06-28 00:10:08,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 214 transitions, 2793 flow [2024-06-28 00:10:08,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 214 transitions, 2744 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-28 00:10:08,811 INFO L231 Difference]: Finished difference. Result has 117 places, 185 transitions, 2302 flow [2024-06-28 00:10:08,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1989, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2302, PETRI_PLACES=117, PETRI_TRANSITIONS=185} [2024-06-28 00:10:08,812 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 76 predicate places. [2024-06-28 00:10:08,812 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 185 transitions, 2302 flow [2024-06-28 00:10:08,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:08,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:08,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:08,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 00:10:08,813 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:10:08,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:08,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1307394797, now seen corresponding path program 1 times [2024-06-28 00:10:08,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:08,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692906642] [2024-06-28 00:10:08,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:08,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:09,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:09,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:09,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692906642] [2024-06-28 00:10:09,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692906642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:09,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:09,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:10:09,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114400218] [2024-06-28 00:10:09,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:09,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:10:09,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:09,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:10:09,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:10:10,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:10:10,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 185 transitions, 2302 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:10,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:10,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:10:10,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:10,818 INFO L124 PetriNetUnfolderBase]: 2296/3430 cut-off events. [2024-06-28 00:10:10,818 INFO L125 PetriNetUnfolderBase]: For 49709/49719 co-relation queries the response was YES. [2024-06-28 00:10:10,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21958 conditions, 3430 events. 2296/3430 cut-off events. For 49709/49719 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 16248 event pairs, 594 based on Foata normal form. 11/3441 useless extension candidates. Maximal degree in co-relation 21899. Up to 3017 conditions per place. [2024-06-28 00:10:10,841 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 142 selfloop transitions, 94 changer transitions 0/239 dead transitions. [2024-06-28 00:10:10,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 239 transitions, 3380 flow [2024-06-28 00:10:10,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:10:10,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:10:10,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 00:10:10,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.459375 [2024-06-28 00:10:10,845 INFO L175 Difference]: Start difference. First operand has 117 places, 185 transitions, 2302 flow. Second operand 8 states and 147 transitions. [2024-06-28 00:10:10,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 239 transitions, 3380 flow [2024-06-28 00:10:10,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 239 transitions, 3214 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 00:10:10,912 INFO L231 Difference]: Finished difference. Result has 123 places, 208 transitions, 2760 flow [2024-06-28 00:10:10,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2158, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2760, PETRI_PLACES=123, PETRI_TRANSITIONS=208} [2024-06-28 00:10:10,913 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 82 predicate places. [2024-06-28 00:10:10,913 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 208 transitions, 2760 flow [2024-06-28 00:10:10,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:10,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:10,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:10,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 00:10:10,913 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:10:10,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:10,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1307475707, now seen corresponding path program 2 times [2024-06-28 00:10:10,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:10,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269314868] [2024-06-28 00:10:10,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:10,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:12,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:12,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:12,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269314868] [2024-06-28 00:10:12,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269314868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:12,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:12,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:10:12,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559410344] [2024-06-28 00:10:12,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:12,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:10:12,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:12,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:10:12,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:10:12,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:10:12,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 208 transitions, 2760 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:12,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:12,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:10:12,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:12,923 INFO L124 PetriNetUnfolderBase]: 2329/3482 cut-off events. [2024-06-28 00:10:12,923 INFO L125 PetriNetUnfolderBase]: For 53460/53476 co-relation queries the response was YES. [2024-06-28 00:10:12,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22786 conditions, 3482 events. 2329/3482 cut-off events. For 53460/53476 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 16560 event pairs, 592 based on Foata normal form. 17/3499 useless extension candidates. Maximal degree in co-relation 22724. Up to 3049 conditions per place. [2024-06-28 00:10:12,945 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 146 selfloop transitions, 101 changer transitions 0/250 dead transitions. [2024-06-28 00:10:12,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 250 transitions, 3686 flow [2024-06-28 00:10:12,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:10:12,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:10:12,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 00:10:12,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446875 [2024-06-28 00:10:12,950 INFO L175 Difference]: Start difference. First operand has 123 places, 208 transitions, 2760 flow. Second operand 8 states and 143 transitions. [2024-06-28 00:10:12,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 250 transitions, 3686 flow [2024-06-28 00:10:13,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 250 transitions, 3533 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 00:10:13,022 INFO L231 Difference]: Finished difference. Result has 128 places, 221 transitions, 3046 flow [2024-06-28 00:10:13,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2620, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3046, PETRI_PLACES=128, PETRI_TRANSITIONS=221} [2024-06-28 00:10:13,023 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 87 predicate places. [2024-06-28 00:10:13,023 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 221 transitions, 3046 flow [2024-06-28 00:10:13,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:13,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:13,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:13,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 00:10:13,023 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:10:13,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:13,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1633071714, now seen corresponding path program 1 times [2024-06-28 00:10:13,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:13,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950656264] [2024-06-28 00:10:13,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:13,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:14,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:14,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:14,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950656264] [2024-06-28 00:10:14,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950656264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:14,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:14,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:10:14,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841073174] [2024-06-28 00:10:14,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:14,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:10:14,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:14,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:10:14,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:10:14,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:10:14,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 221 transitions, 3046 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:14,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:14,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:10:14,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:15,637 INFO L124 PetriNetUnfolderBase]: 2373/3544 cut-off events. [2024-06-28 00:10:15,638 INFO L125 PetriNetUnfolderBase]: For 59779/59793 co-relation queries the response was YES. [2024-06-28 00:10:15,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23639 conditions, 3544 events. 2373/3544 cut-off events. For 59779/59793 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 16878 event pairs, 607 based on Foata normal form. 18/3562 useless extension candidates. Maximal degree in co-relation 23575. Up to 2935 conditions per place. [2024-06-28 00:10:15,662 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 152 selfloop transitions, 109 changer transitions 0/264 dead transitions. [2024-06-28 00:10:15,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 264 transitions, 4014 flow [2024-06-28 00:10:15,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:10:15,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:10:15,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-28 00:10:15,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928571428571429 [2024-06-28 00:10:15,665 INFO L175 Difference]: Start difference. First operand has 128 places, 221 transitions, 3046 flow. Second operand 7 states and 138 transitions. [2024-06-28 00:10:15,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 264 transitions, 4014 flow [2024-06-28 00:10:15,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 264 transitions, 3865 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 00:10:15,764 INFO L231 Difference]: Finished difference. Result has 132 places, 232 transitions, 3319 flow [2024-06-28 00:10:15,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2897, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3319, PETRI_PLACES=132, PETRI_TRANSITIONS=232} [2024-06-28 00:10:15,764 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 91 predicate places. [2024-06-28 00:10:15,764 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 232 transitions, 3319 flow [2024-06-28 00:10:15,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:15,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:15,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:15,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 00:10:15,765 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:10:15,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:15,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1444836236, now seen corresponding path program 2 times [2024-06-28 00:10:15,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:15,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973522214] [2024-06-28 00:10:15,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:15,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:17,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:17,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:17,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973522214] [2024-06-28 00:10:17,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973522214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:17,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:17,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:10:17,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570889954] [2024-06-28 00:10:17,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:17,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:10:17,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:17,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:10:17,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:10:17,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:10:17,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 232 transitions, 3319 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:17,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:17,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:10:17,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:17,782 INFO L124 PetriNetUnfolderBase]: 2354/3530 cut-off events. [2024-06-28 00:10:17,783 INFO L125 PetriNetUnfolderBase]: For 66438/66440 co-relation queries the response was YES. [2024-06-28 00:10:17,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23906 conditions, 3530 events. 2354/3530 cut-off events. For 66438/66440 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 16892 event pairs, 929 based on Foata normal form. 6/3536 useless extension candidates. Maximal degree in co-relation 23841. Up to 3053 conditions per place. [2024-06-28 00:10:17,811 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 164 selfloop transitions, 91 changer transitions 0/258 dead transitions. [2024-06-28 00:10:17,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 258 transitions, 4054 flow [2024-06-28 00:10:17,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:10:17,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:10:17,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 00:10:17,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 00:10:17,813 INFO L175 Difference]: Start difference. First operand has 132 places, 232 transitions, 3319 flow. Second operand 8 states and 130 transitions. [2024-06-28 00:10:17,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 258 transitions, 4054 flow [2024-06-28 00:10:17,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 258 transitions, 3839 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-28 00:10:17,917 INFO L231 Difference]: Finished difference. Result has 136 places, 232 transitions, 3318 flow [2024-06-28 00:10:17,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3106, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3318, PETRI_PLACES=136, PETRI_TRANSITIONS=232} [2024-06-28 00:10:17,918 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 95 predicate places. [2024-06-28 00:10:17,918 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 232 transitions, 3318 flow [2024-06-28 00:10:17,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:17,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:17,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:17,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 00:10:17,919 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:10:17,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:17,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1396339649, now seen corresponding path program 3 times [2024-06-28 00:10:17,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:17,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096174124] [2024-06-28 00:10:17,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:17,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:18,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:18,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:18,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096174124] [2024-06-28 00:10:18,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096174124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:18,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:18,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:10:18,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808862161] [2024-06-28 00:10:18,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:18,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:10:18,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:18,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:10:18,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:10:18,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:10:18,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 232 transitions, 3318 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:18,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:18,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:10:18,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:19,621 INFO L124 PetriNetUnfolderBase]: 2405/3606 cut-off events. [2024-06-28 00:10:19,621 INFO L125 PetriNetUnfolderBase]: For 73095/73097 co-relation queries the response was YES. [2024-06-28 00:10:19,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24662 conditions, 3606 events. 2405/3606 cut-off events. For 73095/73097 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 17309 event pairs, 926 based on Foata normal form. 4/3610 useless extension candidates. Maximal degree in co-relation 24595. Up to 3237 conditions per place. [2024-06-28 00:10:19,648 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 166 selfloop transitions, 104 changer transitions 0/273 dead transitions. [2024-06-28 00:10:19,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 273 transitions, 4416 flow [2024-06-28 00:10:19,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:10:19,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:10:19,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 00:10:19,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392857142857143 [2024-06-28 00:10:19,650 INFO L175 Difference]: Start difference. First operand has 136 places, 232 transitions, 3318 flow. Second operand 7 states and 123 transitions. [2024-06-28 00:10:19,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 273 transitions, 4416 flow [2024-06-28 00:10:19,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 273 transitions, 4230 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 00:10:19,750 INFO L231 Difference]: Finished difference. Result has 138 places, 249 transitions, 3698 flow [2024-06-28 00:10:19,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3152, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3698, PETRI_PLACES=138, PETRI_TRANSITIONS=249} [2024-06-28 00:10:19,750 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 97 predicate places. [2024-06-28 00:10:19,750 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 249 transitions, 3698 flow [2024-06-28 00:10:19,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:19,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:19,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:19,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 00:10:19,751 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:10:19,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:19,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1444830439, now seen corresponding path program 4 times [2024-06-28 00:10:19,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:19,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966540155] [2024-06-28 00:10:19,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:19,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:20,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:20,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:20,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966540155] [2024-06-28 00:10:20,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966540155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:20,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:20,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:10:20,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065384989] [2024-06-28 00:10:20,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:20,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:10:20,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:20,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:10:20,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:10:20,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:10:20,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 249 transitions, 3698 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:20,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:20,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:10:20,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:21,454 INFO L124 PetriNetUnfolderBase]: 2394/3591 cut-off events. [2024-06-28 00:10:21,454 INFO L125 PetriNetUnfolderBase]: For 77018/77020 co-relation queries the response was YES. [2024-06-28 00:10:21,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24865 conditions, 3591 events. 2394/3591 cut-off events. For 77018/77020 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 17228 event pairs, 925 based on Foata normal form. 4/3595 useless extension candidates. Maximal degree in co-relation 24796. Up to 3226 conditions per place. [2024-06-28 00:10:21,482 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 159 selfloop transitions, 115 changer transitions 0/277 dead transitions. [2024-06-28 00:10:21,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 277 transitions, 4590 flow [2024-06-28 00:10:21,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:10:21,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:10:21,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-28 00:10:21,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 00:10:21,483 INFO L175 Difference]: Start difference. First operand has 138 places, 249 transitions, 3698 flow. Second operand 7 states and 126 transitions. [2024-06-28 00:10:21,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 277 transitions, 4590 flow [2024-06-28 00:10:21,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 277 transitions, 4406 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-28 00:10:21,624 INFO L231 Difference]: Finished difference. Result has 143 places, 253 transitions, 3895 flow [2024-06-28 00:10:21,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3516, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3895, PETRI_PLACES=143, PETRI_TRANSITIONS=253} [2024-06-28 00:10:21,624 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 102 predicate places. [2024-06-28 00:10:21,624 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 253 transitions, 3895 flow [2024-06-28 00:10:21,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:21,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:21,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:21,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 00:10:21,625 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:10:21,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:21,625 INFO L85 PathProgramCache]: Analyzing trace with hash -767441076, now seen corresponding path program 3 times [2024-06-28 00:10:21,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:21,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707709219] [2024-06-28 00:10:21,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:21,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:22,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:22,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:22,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707709219] [2024-06-28 00:10:22,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707709219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:22,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:22,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:10:22,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350603656] [2024-06-28 00:10:22,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:22,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:10:22,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:22,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:10:22,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:10:22,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:10:22,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 253 transitions, 3895 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:22,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:22,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:10:22,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:23,659 INFO L124 PetriNetUnfolderBase]: 2412/3613 cut-off events. [2024-06-28 00:10:23,659 INFO L125 PetriNetUnfolderBase]: For 83323/83323 co-relation queries the response was YES. [2024-06-28 00:10:23,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25544 conditions, 3613 events. 2412/3613 cut-off events. For 83323/83323 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 17339 event pairs, 933 based on Foata normal form. 3/3616 useless extension candidates. Maximal degree in co-relation 25473. Up to 3452 conditions per place. [2024-06-28 00:10:23,687 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 237 selfloop transitions, 46 changer transitions 0/286 dead transitions. [2024-06-28 00:10:23,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 286 transitions, 4814 flow [2024-06-28 00:10:23,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:10:23,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:10:23,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-28 00:10:23,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41785714285714287 [2024-06-28 00:10:23,688 INFO L175 Difference]: Start difference. First operand has 143 places, 253 transitions, 3895 flow. Second operand 7 states and 117 transitions. [2024-06-28 00:10:23,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 286 transitions, 4814 flow [2024-06-28 00:10:23,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 286 transitions, 4622 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 00:10:23,847 INFO L231 Difference]: Finished difference. Result has 145 places, 263 transitions, 3970 flow [2024-06-28 00:10:23,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3703, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3970, PETRI_PLACES=145, PETRI_TRANSITIONS=263} [2024-06-28 00:10:23,847 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 104 predicate places. [2024-06-28 00:10:23,848 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 263 transitions, 3970 flow [2024-06-28 00:10:23,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:23,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:23,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:23,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 00:10:23,848 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:10:23,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:23,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1694899046, now seen corresponding path program 4 times [2024-06-28 00:10:23,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:23,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176478149] [2024-06-28 00:10:23,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:23,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:23,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:24,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:24,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:24,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176478149] [2024-06-28 00:10:24,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176478149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:24,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:24,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:10:24,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187620418] [2024-06-28 00:10:24,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:24,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:10:24,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:24,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:10:24,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:10:24,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:10:24,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 263 transitions, 3970 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:24,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:24,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:10:24,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:25,709 INFO L124 PetriNetUnfolderBase]: 2396/3590 cut-off events. [2024-06-28 00:10:25,709 INFO L125 PetriNetUnfolderBase]: For 88112/88112 co-relation queries the response was YES. [2024-06-28 00:10:25,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25257 conditions, 3590 events. 2396/3590 cut-off events. For 88112/88112 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 17206 event pairs, 937 based on Foata normal form. 6/3596 useless extension candidates. Maximal degree in co-relation 25186. Up to 3480 conditions per place. [2024-06-28 00:10:25,739 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 249 selfloop transitions, 30 changer transitions 0/282 dead transitions. [2024-06-28 00:10:25,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 282 transitions, 4606 flow [2024-06-28 00:10:25,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:10:25,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:10:25,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-06-28 00:10:25,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 00:10:25,741 INFO L175 Difference]: Start difference. First operand has 145 places, 263 transitions, 3970 flow. Second operand 7 states and 112 transitions. [2024-06-28 00:10:25,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 282 transitions, 4606 flow [2024-06-28 00:10:25,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 282 transitions, 4515 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-28 00:10:25,907 INFO L231 Difference]: Finished difference. Result has 149 places, 263 transitions, 3960 flow [2024-06-28 00:10:25,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3879, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3960, PETRI_PLACES=149, PETRI_TRANSITIONS=263} [2024-06-28 00:10:25,907 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 108 predicate places. [2024-06-28 00:10:25,908 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 263 transitions, 3960 flow [2024-06-28 00:10:25,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:25,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:25,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:25,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 00:10:25,908 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:10:25,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:25,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1695166173, now seen corresponding path program 5 times [2024-06-28 00:10:25,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:25,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488808370] [2024-06-28 00:10:25,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:25,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:26,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:26,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:26,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488808370] [2024-06-28 00:10:26,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488808370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:26,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:26,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:10:26,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464521894] [2024-06-28 00:10:26,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:26,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:10:26,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:26,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:10:26,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:10:26,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:10:26,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 263 transitions, 3960 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:26,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:26,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:10:26,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:27,541 INFO L124 PetriNetUnfolderBase]: 2385/3575 cut-off events. [2024-06-28 00:10:27,541 INFO L125 PetriNetUnfolderBase]: For 90275/90279 co-relation queries the response was YES. [2024-06-28 00:10:27,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25177 conditions, 3575 events. 2385/3575 cut-off events. For 90275/90279 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 17132 event pairs, 947 based on Foata normal form. 8/3583 useless extension candidates. Maximal degree in co-relation 25104. Up to 3474 conditions per place. [2024-06-28 00:10:27,571 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 254 selfloop transitions, 30 changer transitions 0/287 dead transitions. [2024-06-28 00:10:27,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 287 transitions, 4725 flow [2024-06-28 00:10:27,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:10:27,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:10:27,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-06-28 00:10:27,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 00:10:27,572 INFO L175 Difference]: Start difference. First operand has 149 places, 263 transitions, 3960 flow. Second operand 7 states and 112 transitions. [2024-06-28 00:10:27,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 287 transitions, 4725 flow [2024-06-28 00:10:27,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 287 transitions, 4644 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 00:10:27,734 INFO L231 Difference]: Finished difference. Result has 150 places, 269 transitions, 4087 flow [2024-06-28 00:10:27,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3879, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4087, PETRI_PLACES=150, PETRI_TRANSITIONS=269} [2024-06-28 00:10:27,735 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 109 predicate places. [2024-06-28 00:10:27,735 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 269 transitions, 4087 flow [2024-06-28 00:10:27,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:27,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:27,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:27,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 00:10:27,736 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:10:27,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:27,736 INFO L85 PathProgramCache]: Analyzing trace with hash -16435290, now seen corresponding path program 1 times [2024-06-28 00:10:27,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:27,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265019871] [2024-06-28 00:10:27,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:27,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:30,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:30,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:30,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265019871] [2024-06-28 00:10:30,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265019871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:30,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:30,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:10:30,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673974336] [2024-06-28 00:10:30,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:30,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:10:30,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:30,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:10:30,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:10:30,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:10:30,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 269 transitions, 4087 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-06-28 00:10:30,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:30,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:10:30,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:31,048 INFO L124 PetriNetUnfolderBase]: 2513/3776 cut-off events. [2024-06-28 00:10:31,048 INFO L125 PetriNetUnfolderBase]: For 102865/102879 co-relation queries the response was YES. [2024-06-28 00:10:31,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26781 conditions, 3776 events. 2513/3776 cut-off events. For 102865/102879 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 18356 event pairs, 510 based on Foata normal form. 16/3792 useless extension candidates. Maximal degree in co-relation 26707. Up to 2629 conditions per place. [2024-06-28 00:10:31,079 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 175 selfloop transitions, 138 changer transitions 0/316 dead transitions. [2024-06-28 00:10:31,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 316 transitions, 5247 flow [2024-06-28 00:10:31,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:10:31,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:10:31,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-28 00:10:31,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49375 [2024-06-28 00:10:31,081 INFO L175 Difference]: Start difference. First operand has 150 places, 269 transitions, 4087 flow. Second operand 8 states and 158 transitions. [2024-06-28 00:10:31,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 316 transitions, 5247 flow [2024-06-28 00:10:31,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 316 transitions, 5150 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 00:10:31,263 INFO L231 Difference]: Finished difference. Result has 154 places, 275 transitions, 4366 flow [2024-06-28 00:10:31,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3990, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4366, PETRI_PLACES=154, PETRI_TRANSITIONS=275} [2024-06-28 00:10:31,264 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 113 predicate places. [2024-06-28 00:10:31,264 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 275 transitions, 4366 flow [2024-06-28 00:10:31,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-06-28 00:10:31,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:31,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:31,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 00:10:31,264 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:10:31,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:31,265 INFO L85 PathProgramCache]: Analyzing trace with hash 62965320, now seen corresponding path program 2 times [2024-06-28 00:10:31,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:31,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645417928] [2024-06-28 00:10:31,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:31,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:33,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:33,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:33,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645417928] [2024-06-28 00:10:33,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645417928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:33,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:33,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:10:33,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183222497] [2024-06-28 00:10:33,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:33,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:10:33,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:33,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:10:33,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:10:33,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:10:33,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 275 transitions, 4366 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-06-28 00:10:33,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:33,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:10:33,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:34,426 INFO L124 PetriNetUnfolderBase]: 2530/3803 cut-off events. [2024-06-28 00:10:34,426 INFO L125 PetriNetUnfolderBase]: For 112994/113008 co-relation queries the response was YES. [2024-06-28 00:10:34,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27936 conditions, 3803 events. 2530/3803 cut-off events. For 112994/113008 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 18547 event pairs, 633 based on Foata normal form. 16/3819 useless extension candidates. Maximal degree in co-relation 27860. Up to 2925 conditions per place. [2024-06-28 00:10:34,461 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 174 selfloop transitions, 134 changer transitions 0/311 dead transitions. [2024-06-28 00:10:34,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 311 transitions, 5352 flow [2024-06-28 00:10:34,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:10:34,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:10:34,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 00:10:34,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.471875 [2024-06-28 00:10:34,463 INFO L175 Difference]: Start difference. First operand has 154 places, 275 transitions, 4366 flow. Second operand 8 states and 151 transitions. [2024-06-28 00:10:34,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 311 transitions, 5352 flow [2024-06-28 00:10:34,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 311 transitions, 5120 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 00:10:34,667 INFO L231 Difference]: Finished difference. Result has 157 places, 277 transitions, 4455 flow [2024-06-28 00:10:34,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4146, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4455, PETRI_PLACES=157, PETRI_TRANSITIONS=277} [2024-06-28 00:10:34,667 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 116 predicate places. [2024-06-28 00:10:34,667 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 277 transitions, 4455 flow [2024-06-28 00:10:34,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-06-28 00:10:34,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:34,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:34,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 00:10:34,668 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:10:34,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:34,668 INFO L85 PathProgramCache]: Analyzing trace with hash -133655156, now seen corresponding path program 1 times [2024-06-28 00:10:34,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:34,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330291214] [2024-06-28 00:10:34,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:34,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:36,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:36,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:36,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330291214] [2024-06-28 00:10:36,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330291214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:36,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:36,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:10:36,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360289964] [2024-06-28 00:10:36,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:36,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:10:36,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:36,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:10:36,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:10:36,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:10:36,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 277 transitions, 4455 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-06-28 00:10:36,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:36,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:10:36,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:37,601 INFO L124 PetriNetUnfolderBase]: 2552/3835 cut-off events. [2024-06-28 00:10:37,602 INFO L125 PetriNetUnfolderBase]: For 113388/113402 co-relation queries the response was YES. [2024-06-28 00:10:37,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28329 conditions, 3835 events. 2552/3835 cut-off events. For 113388/113402 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 18730 event pairs, 599 based on Foata normal form. 16/3851 useless extension candidates. Maximal degree in co-relation 28252. Up to 2928 conditions per place. [2024-06-28 00:10:37,631 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 178 selfloop transitions, 136 changer transitions 0/317 dead transitions. [2024-06-28 00:10:37,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 317 transitions, 5489 flow [2024-06-28 00:10:37,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:10:37,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:10:37,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 00:10:37,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-28 00:10:37,633 INFO L175 Difference]: Start difference. First operand has 157 places, 277 transitions, 4455 flow. Second operand 8 states and 152 transitions. [2024-06-28 00:10:37,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 317 transitions, 5489 flow [2024-06-28 00:10:37,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 317 transitions, 5204 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 00:10:37,824 INFO L231 Difference]: Finished difference. Result has 159 places, 283 transitions, 4524 flow [2024-06-28 00:10:37,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4170, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4524, PETRI_PLACES=159, PETRI_TRANSITIONS=283} [2024-06-28 00:10:37,825 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 118 predicate places. [2024-06-28 00:10:37,825 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 283 transitions, 4524 flow [2024-06-28 00:10:37,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-06-28 00:10:37,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:37,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:37,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 00:10:37,826 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:10:37,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:37,826 INFO L85 PathProgramCache]: Analyzing trace with hash 70230480, now seen corresponding path program 3 times [2024-06-28 00:10:37,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:37,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240128586] [2024-06-28 00:10:37,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:37,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:39,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:39,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:39,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240128586] [2024-06-28 00:10:39,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240128586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:39,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:39,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:10:39,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212127376] [2024-06-28 00:10:39,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:39,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:10:39,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:39,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:10:39,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:10:40,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:10:40,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 283 transitions, 4524 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-06-28 00:10:40,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:40,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:10:40,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:40,944 INFO L124 PetriNetUnfolderBase]: 2619/3950 cut-off events. [2024-06-28 00:10:40,945 INFO L125 PetriNetUnfolderBase]: For 128073/128087 co-relation queries the response was YES. [2024-06-28 00:10:40,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29221 conditions, 3950 events. 2619/3950 cut-off events. For 128073/128087 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 19554 event pairs, 580 based on Foata normal form. 36/3986 useless extension candidates. Maximal degree in co-relation 29143. Up to 3113 conditions per place. [2024-06-28 00:10:40,985 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 174 selfloop transitions, 143 changer transitions 0/320 dead transitions. [2024-06-28 00:10:40,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 320 transitions, 5456 flow [2024-06-28 00:10:40,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:10:40,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:10:40,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-28 00:10:40,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-06-28 00:10:40,987 INFO L175 Difference]: Start difference. First operand has 159 places, 283 transitions, 4524 flow. Second operand 7 states and 144 transitions. [2024-06-28 00:10:40,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 320 transitions, 5456 flow [2024-06-28 00:10:41,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 320 transitions, 5298 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 00:10:41,213 INFO L231 Difference]: Finished difference. Result has 162 places, 284 transitions, 4681 flow [2024-06-28 00:10:41,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4366, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4681, PETRI_PLACES=162, PETRI_TRANSITIONS=284} [2024-06-28 00:10:41,213 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 121 predicate places. [2024-06-28 00:10:41,213 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 284 transitions, 4681 flow [2024-06-28 00:10:41,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-06-28 00:10:41,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:41,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:41,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 00:10:41,214 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:10:41,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:41,214 INFO L85 PathProgramCache]: Analyzing trace with hash -130858646, now seen corresponding path program 2 times [2024-06-28 00:10:41,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:41,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717924748] [2024-06-28 00:10:41,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:41,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:43,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:43,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:43,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717924748] [2024-06-28 00:10:43,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717924748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:43,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:43,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:10:43,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022438231] [2024-06-28 00:10:43,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:43,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:10:43,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:43,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:10:43,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:10:43,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:10:43,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 284 transitions, 4681 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-06-28 00:10:43,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:43,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:10:43,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:43,943 INFO L124 PetriNetUnfolderBase]: 2641/3982 cut-off events. [2024-06-28 00:10:43,944 INFO L125 PetriNetUnfolderBase]: For 127649/127663 co-relation queries the response was YES. [2024-06-28 00:10:43,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30164 conditions, 3982 events. 2641/3982 cut-off events. For 127649/127663 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 19764 event pairs, 580 based on Foata normal form. 16/3998 useless extension candidates. Maximal degree in co-relation 30085. Up to 3265 conditions per place. [2024-06-28 00:10:43,978 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 171 selfloop transitions, 145 changer transitions 0/319 dead transitions. [2024-06-28 00:10:43,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 319 transitions, 5606 flow [2024-06-28 00:10:43,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:10:43,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:10:43,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 00:10:43,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.465625 [2024-06-28 00:10:43,980 INFO L175 Difference]: Start difference. First operand has 162 places, 284 transitions, 4681 flow. Second operand 8 states and 149 transitions. [2024-06-28 00:10:43,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 319 transitions, 5606 flow [2024-06-28 00:10:44,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 319 transitions, 5312 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 00:10:44,178 INFO L231 Difference]: Finished difference. Result has 165 places, 287 transitions, 4725 flow [2024-06-28 00:10:44,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4387, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4725, PETRI_PLACES=165, PETRI_TRANSITIONS=287} [2024-06-28 00:10:44,179 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 124 predicate places. [2024-06-28 00:10:44,179 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 287 transitions, 4725 flow [2024-06-28 00:10:44,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-06-28 00:10:44,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:44,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:44,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 00:10:44,180 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:10:44,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:44,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1874536834, now seen corresponding path program 3 times [2024-06-28 00:10:44,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:44,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092918364] [2024-06-28 00:10:44,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:44,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:46,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:46,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:46,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092918364] [2024-06-28 00:10:46,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092918364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:46,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:46,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:10:46,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145883255] [2024-06-28 00:10:46,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:46,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:10:46,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:46,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:10:46,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:10:46,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:10:46,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 287 transitions, 4725 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-06-28 00:10:46,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:46,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:10:46,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:47,029 INFO L124 PetriNetUnfolderBase]: 2631/3967 cut-off events. [2024-06-28 00:10:47,029 INFO L125 PetriNetUnfolderBase]: For 130901/130911 co-relation queries the response was YES. [2024-06-28 00:10:47,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30159 conditions, 3967 events. 2631/3967 cut-off events. For 130901/130911 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 19792 event pairs, 694 based on Foata normal form. 12/3979 useless extension candidates. Maximal degree in co-relation 30078. Up to 3165 conditions per place. [2024-06-28 00:10:47,064 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 164 selfloop transitions, 161 changer transitions 0/328 dead transitions. [2024-06-28 00:10:47,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 328 transitions, 5815 flow [2024-06-28 00:10:47,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:10:47,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:10:47,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-28 00:10:47,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49375 [2024-06-28 00:10:47,067 INFO L175 Difference]: Start difference. First operand has 165 places, 287 transitions, 4725 flow. Second operand 8 states and 158 transitions. [2024-06-28 00:10:47,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 328 transitions, 5815 flow [2024-06-28 00:10:47,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 328 transitions, 5509 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 00:10:47,295 INFO L231 Difference]: Finished difference. Result has 168 places, 289 transitions, 4872 flow [2024-06-28 00:10:47,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4421, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4872, PETRI_PLACES=168, PETRI_TRANSITIONS=289} [2024-06-28 00:10:47,296 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 127 predicate places. [2024-06-28 00:10:47,296 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 289 transitions, 4872 flow [2024-06-28 00:10:47,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2024-06-28 00:10:47,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:47,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:47,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 00:10:47,297 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:10:47,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:47,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1877033698, now seen corresponding path program 1 times [2024-06-28 00:10:47,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:47,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277184268] [2024-06-28 00:10:47,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:47,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:49,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:49,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:49,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277184268] [2024-06-28 00:10:49,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277184268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:49,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:49,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:10:49,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794795494] [2024-06-28 00:10:49,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:49,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:10:49,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:49,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:10:49,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:10:49,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:10:49,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 289 transitions, 4872 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-28 00:10:49,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:49,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:10:49,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:50,199 INFO L124 PetriNetUnfolderBase]: 2680/4038 cut-off events. [2024-06-28 00:10:50,199 INFO L125 PetriNetUnfolderBase]: For 139123/139137 co-relation queries the response was YES. [2024-06-28 00:10:50,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31444 conditions, 4038 events. 2680/4038 cut-off events. For 139123/139137 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 20102 event pairs, 570 based on Foata normal form. 15/4053 useless extension candidates. Maximal degree in co-relation 31361. Up to 3386 conditions per place. [2024-06-28 00:10:50,300 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 182 selfloop transitions, 152 changer transitions 0/337 dead transitions. [2024-06-28 00:10:50,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 337 transitions, 6258 flow [2024-06-28 00:10:50,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:10:50,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:10:50,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 00:10:50,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45625 [2024-06-28 00:10:50,302 INFO L175 Difference]: Start difference. First operand has 168 places, 289 transitions, 4872 flow. Second operand 8 states and 146 transitions. [2024-06-28 00:10:50,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 337 transitions, 6258 flow [2024-06-28 00:10:50,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 337 transitions, 5985 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 00:10:50,559 INFO L231 Difference]: Finished difference. Result has 172 places, 305 transitions, 5256 flow [2024-06-28 00:10:50,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4626, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5256, PETRI_PLACES=172, PETRI_TRANSITIONS=305} [2024-06-28 00:10:50,560 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 131 predicate places. [2024-06-28 00:10:50,560 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 305 transitions, 5256 flow [2024-06-28 00:10:50,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-28 00:10:50,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:50,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:50,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 00:10:50,560 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:10:50,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:50,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1877033450, now seen corresponding path program 1 times [2024-06-28 00:10:50,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:50,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769044049] [2024-06-28 00:10:50,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:50,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:52,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:52,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:52,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769044049] [2024-06-28 00:10:52,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769044049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:52,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:52,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:10:52,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675129777] [2024-06-28 00:10:52,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:52,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:10:52,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:52,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:10:52,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:10:52,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:10:52,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 305 transitions, 5256 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-28 00:10:52,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:52,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:10:52,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:53,779 INFO L124 PetriNetUnfolderBase]: 2714/4091 cut-off events. [2024-06-28 00:10:53,779 INFO L125 PetriNetUnfolderBase]: For 152831/152841 co-relation queries the response was YES. [2024-06-28 00:10:53,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31874 conditions, 4091 events. 2714/4091 cut-off events. For 152831/152841 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 20433 event pairs, 588 based on Foata normal form. 16/4107 useless extension candidates. Maximal degree in co-relation 31789. Up to 3398 conditions per place. [2024-06-28 00:10:53,814 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 187 selfloop transitions, 154 changer transitions 0/344 dead transitions. [2024-06-28 00:10:53,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 344 transitions, 6384 flow [2024-06-28 00:10:53,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:10:53,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:10:53,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 00:10:53,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 00:10:53,816 INFO L175 Difference]: Start difference. First operand has 172 places, 305 transitions, 5256 flow. Second operand 9 states and 160 transitions. [2024-06-28 00:10:53,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 344 transitions, 6384 flow [2024-06-28 00:10:54,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 344 transitions, 6151 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 00:10:54,104 INFO L231 Difference]: Finished difference. Result has 176 places, 308 transitions, 5400 flow [2024-06-28 00:10:54,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5031, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5400, PETRI_PLACES=176, PETRI_TRANSITIONS=308} [2024-06-28 00:10:54,105 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 135 predicate places. [2024-06-28 00:10:54,105 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 308 transitions, 5400 flow [2024-06-28 00:10:54,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-28 00:10:54,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:54,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:54,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 00:10:54,105 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:10:54,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:54,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1868910334, now seen corresponding path program 4 times [2024-06-28 00:10:54,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:54,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902043696] [2024-06-28 00:10:54,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:54,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:55,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:55,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:55,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902043696] [2024-06-28 00:10:55,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902043696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:55,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:55,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:10:55,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653485877] [2024-06-28 00:10:55,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:55,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:10:55,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:55,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:10:55,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:10:55,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:10:55,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 308 transitions, 5400 flow. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:55,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:55,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:10:55,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:56,648 INFO L124 PetriNetUnfolderBase]: 2707/4085 cut-off events. [2024-06-28 00:10:56,648 INFO L125 PetriNetUnfolderBase]: For 151365/151377 co-relation queries the response was YES. [2024-06-28 00:10:56,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32009 conditions, 4085 events. 2707/4085 cut-off events. For 151365/151377 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 20469 event pairs, 696 based on Foata normal form. 14/4099 useless extension candidates. Maximal degree in co-relation 31924. Up to 3271 conditions per place. [2024-06-28 00:10:56,682 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 163 selfloop transitions, 174 changer transitions 0/340 dead transitions. [2024-06-28 00:10:56,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 340 transitions, 6360 flow [2024-06-28 00:10:56,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:10:56,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:10:56,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-28 00:10:56,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 00:10:56,683 INFO L175 Difference]: Start difference. First operand has 176 places, 308 transitions, 5400 flow. Second operand 7 states and 140 transitions. [2024-06-28 00:10:56,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 340 transitions, 6360 flow [2024-06-28 00:10:56,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 340 transitions, 5997 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 00:10:56,988 INFO L231 Difference]: Finished difference. Result has 176 places, 308 transitions, 5432 flow [2024-06-28 00:10:56,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5045, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5432, PETRI_PLACES=176, PETRI_TRANSITIONS=308} [2024-06-28 00:10:56,989 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 135 predicate places. [2024-06-28 00:10:56,989 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 308 transitions, 5432 flow [2024-06-28 00:10:56,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:56,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:56,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:56,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 00:10:56,989 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:10:56,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:56,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1877213188, now seen corresponding path program 2 times [2024-06-28 00:10:56,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:56,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791117078] [2024-06-28 00:10:56,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:56,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:58,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:58,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:58,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791117078] [2024-06-28 00:10:58,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791117078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:58,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:58,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:10:58,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21108217] [2024-06-28 00:10:58,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:58,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:10:58,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:58,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:10:58,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:10:58,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:10:58,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 308 transitions, 5432 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-28 00:10:58,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:58,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:10:58,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:59,487 INFO L124 PetriNetUnfolderBase]: 2719/4100 cut-off events. [2024-06-28 00:10:59,487 INFO L125 PetriNetUnfolderBase]: For 157674/157684 co-relation queries the response was YES. [2024-06-28 00:10:59,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32280 conditions, 4100 events. 2719/4100 cut-off events. For 157674/157684 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 20504 event pairs, 579 based on Foata normal form. 11/4111 useless extension candidates. Maximal degree in co-relation 32194. Up to 3445 conditions per place. [2024-06-28 00:10:59,527 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 175 selfloop transitions, 168 changer transitions 0/346 dead transitions. [2024-06-28 00:10:59,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 346 transitions, 6635 flow [2024-06-28 00:10:59,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:10:59,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:10:59,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 00:10:59,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.459375 [2024-06-28 00:10:59,529 INFO L175 Difference]: Start difference. First operand has 176 places, 308 transitions, 5432 flow. Second operand 8 states and 147 transitions. [2024-06-28 00:10:59,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 346 transitions, 6635 flow [2024-06-28 00:10:59,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 346 transitions, 6269 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 00:10:59,885 INFO L231 Difference]: Finished difference. Result has 179 places, 317 transitions, 5673 flow [2024-06-28 00:10:59,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5084, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5673, PETRI_PLACES=179, PETRI_TRANSITIONS=317} [2024-06-28 00:10:59,886 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 138 predicate places. [2024-06-28 00:10:59,886 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 317 transitions, 5673 flow [2024-06-28 00:10:59,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-28 00:10:59,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:59,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:59,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 00:10:59,886 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:10:59,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:59,887 INFO L85 PathProgramCache]: Analyzing trace with hash 336863714, now seen corresponding path program 3 times [2024-06-28 00:10:59,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:59,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738132028] [2024-06-28 00:10:59,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:59,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:01,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:01,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:01,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738132028] [2024-06-28 00:11:01,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738132028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:01,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:01,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:11:01,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790272178] [2024-06-28 00:11:01,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:01,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:11:01,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:01,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:11:01,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:11:01,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:11:01,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 317 transitions, 5673 flow. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:01,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:01,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:11:01,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:02,100 INFO L124 PetriNetUnfolderBase]: 2770/4182 cut-off events. [2024-06-28 00:11:02,101 INFO L125 PetriNetUnfolderBase]: For 171567/171569 co-relation queries the response was YES. [2024-06-28 00:11:02,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33512 conditions, 4182 events. 2770/4182 cut-off events. For 171567/171569 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 21035 event pairs, 1020 based on Foata normal form. 4/4186 useless extension candidates. Maximal degree in co-relation 33424. Up to 3639 conditions per place. [2024-06-28 00:11:02,141 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 199 selfloop transitions, 154 changer transitions 0/356 dead transitions. [2024-06-28 00:11:02,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 356 transitions, 7063 flow [2024-06-28 00:11:02,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:11:02,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:11:02,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-28 00:11:02,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-28 00:11:02,143 INFO L175 Difference]: Start difference. First operand has 179 places, 317 transitions, 5673 flow. Second operand 7 states and 125 transitions. [2024-06-28 00:11:02,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 356 transitions, 7063 flow [2024-06-28 00:11:02,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 356 transitions, 6817 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 00:11:02,517 INFO L231 Difference]: Finished difference. Result has 181 places, 332 transitions, 6081 flow [2024-06-28 00:11:02,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5460, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6081, PETRI_PLACES=181, PETRI_TRANSITIONS=332} [2024-06-28 00:11:02,518 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 140 predicate places. [2024-06-28 00:11:02,518 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 332 transitions, 6081 flow [2024-06-28 00:11:02,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:02,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:02,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:02,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 00:11:02,518 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:11:02,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:02,519 INFO L85 PathProgramCache]: Analyzing trace with hash 336863962, now seen corresponding path program 2 times [2024-06-28 00:11:02,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:02,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427810697] [2024-06-28 00:11:02,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:02,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:04,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:04,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:04,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427810697] [2024-06-28 00:11:04,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427810697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:04,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:04,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:11:04,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348459678] [2024-06-28 00:11:04,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:04,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:11:04,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:04,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:11:04,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:11:04,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:11:04,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 332 transitions, 6081 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:04,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:04,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:11:04,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:05,203 INFO L124 PetriNetUnfolderBase]: 2826/4275 cut-off events. [2024-06-28 00:11:05,203 INFO L125 PetriNetUnfolderBase]: For 178704/178706 co-relation queries the response was YES. [2024-06-28 00:11:05,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33957 conditions, 4275 events. 2826/4275 cut-off events. For 178704/178706 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 21708 event pairs, 1026 based on Foata normal form. 8/4283 useless extension candidates. Maximal degree in co-relation 33869. Up to 3659 conditions per place. [2024-06-28 00:11:05,244 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 204 selfloop transitions, 157 changer transitions 0/364 dead transitions. [2024-06-28 00:11:05,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 364 transitions, 7117 flow [2024-06-28 00:11:05,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:11:05,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:11:05,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-28 00:11:05,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-28 00:11:05,247 INFO L175 Difference]: Start difference. First operand has 181 places, 332 transitions, 6081 flow. Second operand 9 states and 145 transitions. [2024-06-28 00:11:05,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 364 transitions, 7117 flow [2024-06-28 00:11:05,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 364 transitions, 6938 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 00:11:05,642 INFO L231 Difference]: Finished difference. Result has 187 places, 338 transitions, 6306 flow [2024-06-28 00:11:05,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5902, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6306, PETRI_PLACES=187, PETRI_TRANSITIONS=338} [2024-06-28 00:11:05,642 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 146 predicate places. [2024-06-28 00:11:05,642 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 338 transitions, 6306 flow [2024-06-28 00:11:05,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:05,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:05,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:05,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 00:11:05,643 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:11:05,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:05,643 INFO L85 PathProgramCache]: Analyzing trace with hash 2090912396, now seen corresponding path program 4 times [2024-06-28 00:11:05,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:05,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706810747] [2024-06-28 00:11:05,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:05,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:07,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:07,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:07,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706810747] [2024-06-28 00:11:07,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706810747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:07,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:07,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:11:07,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959413454] [2024-06-28 00:11:07,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:07,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:11:07,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:07,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:11:07,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:11:07,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:11:07,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 338 transitions, 6306 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:07,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:07,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:11:07,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:08,091 INFO L124 PetriNetUnfolderBase]: 2815/4264 cut-off events. [2024-06-28 00:11:08,091 INFO L125 PetriNetUnfolderBase]: For 185334/185336 co-relation queries the response was YES. [2024-06-28 00:11:08,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34325 conditions, 4264 events. 2815/4264 cut-off events. For 185334/185336 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 21703 event pairs, 1031 based on Foata normal form. 4/4268 useless extension candidates. Maximal degree in co-relation 34236. Up to 3877 conditions per place. [2024-06-28 00:11:08,133 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 228 selfloop transitions, 133 changer transitions 0/364 dead transitions. [2024-06-28 00:11:08,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 364 transitions, 7294 flow [2024-06-28 00:11:08,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:11:08,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:11:08,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 00:11:08,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-28 00:11:08,135 INFO L175 Difference]: Start difference. First operand has 187 places, 338 transitions, 6306 flow. Second operand 8 states and 138 transitions. [2024-06-28 00:11:08,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 364 transitions, 7294 flow [2024-06-28 00:11:08,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 364 transitions, 7062 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 00:11:08,574 INFO L231 Difference]: Finished difference. Result has 190 places, 338 transitions, 6360 flow [2024-06-28 00:11:08,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6074, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6360, PETRI_PLACES=190, PETRI_TRANSITIONS=338} [2024-06-28 00:11:08,575 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 149 predicate places. [2024-06-28 00:11:08,575 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 338 transitions, 6360 flow [2024-06-28 00:11:08,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:08,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:08,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:08,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 00:11:08,575 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:11:08,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:08,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1831496298, now seen corresponding path program 3 times [2024-06-28 00:11:08,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:08,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447332251] [2024-06-28 00:11:08,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:08,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:09,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:09,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:09,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447332251] [2024-06-28 00:11:09,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447332251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:09,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:09,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:11:09,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492928141] [2024-06-28 00:11:09,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:09,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:11:09,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:09,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:11:09,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:11:09,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:11:09,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 338 transitions, 6360 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-28 00:11:09,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:09,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:11:09,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:10,780 INFO L124 PetriNetUnfolderBase]: 2832/4280 cut-off events. [2024-06-28 00:11:10,781 INFO L125 PetriNetUnfolderBase]: For 192759/192759 co-relation queries the response was YES. [2024-06-28 00:11:10,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34564 conditions, 4280 events. 2832/4280 cut-off events. For 192759/192759 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 21698 event pairs, 1037 based on Foata normal form. 4/4284 useless extension candidates. Maximal degree in co-relation 34474. Up to 4163 conditions per place. [2024-06-28 00:11:10,820 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 342 selfloop transitions, 19 changer transitions 0/364 dead transitions. [2024-06-28 00:11:10,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 364 transitions, 7206 flow [2024-06-28 00:11:10,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:11:10,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:11:10,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-06-28 00:11:10,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-28 00:11:10,822 INFO L175 Difference]: Start difference. First operand has 190 places, 338 transitions, 6360 flow. Second operand 9 states and 132 transitions. [2024-06-28 00:11:10,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 364 transitions, 7206 flow [2024-06-28 00:11:11,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 364 transitions, 6937 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 00:11:11,269 INFO L231 Difference]: Finished difference. Result has 194 places, 340 transitions, 6184 flow [2024-06-28 00:11:11,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6091, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6184, PETRI_PLACES=194, PETRI_TRANSITIONS=340} [2024-06-28 00:11:11,269 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 153 predicate places. [2024-06-28 00:11:11,269 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 340 transitions, 6184 flow [2024-06-28 00:11:11,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-28 00:11:11,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:11,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:11,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 00:11:11,270 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:11:11,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:11,270 INFO L85 PathProgramCache]: Analyzing trace with hash -92355426, now seen corresponding path program 5 times [2024-06-28 00:11:11,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:11,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988638761] [2024-06-28 00:11:11,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:11,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:12,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:12,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:12,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988638761] [2024-06-28 00:11:12,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988638761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:12,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:12,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:11:12,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079535478] [2024-06-28 00:11:12,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:12,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:11:12,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:12,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:11:12,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:11:12,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:11:12,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 340 transitions, 6184 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:12,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:12,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:11:12,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:13,304 INFO L124 PetriNetUnfolderBase]: 2807/4246 cut-off events. [2024-06-28 00:11:13,304 INFO L125 PetriNetUnfolderBase]: For 195919/195923 co-relation queries the response was YES. [2024-06-28 00:11:13,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33945 conditions, 4246 events. 2807/4246 cut-off events. For 195919/195923 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 21532 event pairs, 1055 based on Foata normal form. 12/4258 useless extension candidates. Maximal degree in co-relation 33854. Up to 4074 conditions per place. [2024-06-28 00:11:13,348 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 303 selfloop transitions, 54 changer transitions 0/360 dead transitions. [2024-06-28 00:11:13,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 360 transitions, 7004 flow [2024-06-28 00:11:13,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:11:13,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:11:13,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-28 00:11:13,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40714285714285714 [2024-06-28 00:11:13,349 INFO L175 Difference]: Start difference. First operand has 194 places, 340 transitions, 6184 flow. Second operand 7 states and 114 transitions. [2024-06-28 00:11:13,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 360 transitions, 7004 flow [2024-06-28 00:11:13,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 360 transitions, 6881 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-28 00:11:13,864 INFO L231 Difference]: Finished difference. Result has 194 places, 340 transitions, 6203 flow [2024-06-28 00:11:13,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6061, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6203, PETRI_PLACES=194, PETRI_TRANSITIONS=340} [2024-06-28 00:11:13,865 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 153 predicate places. [2024-06-28 00:11:13,865 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 340 transitions, 6203 flow [2024-06-28 00:11:13,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:13,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:13,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:13,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 00:11:13,865 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:11:13,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:13,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1831792968, now seen corresponding path program 4 times [2024-06-28 00:11:13,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:13,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552946548] [2024-06-28 00:11:13,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:13,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:15,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:15,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:15,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552946548] [2024-06-28 00:11:15,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552946548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:15,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:15,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:11:15,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107399496] [2024-06-28 00:11:15,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:15,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:11:15,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:15,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:11:15,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:11:15,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:11:15,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 340 transitions, 6203 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-28 00:11:15,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:15,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:11:15,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:16,134 INFO L124 PetriNetUnfolderBase]: 2824/4275 cut-off events. [2024-06-28 00:11:16,134 INFO L125 PetriNetUnfolderBase]: For 202490/202490 co-relation queries the response was YES. [2024-06-28 00:11:16,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34355 conditions, 4275 events. 2824/4275 cut-off events. For 202490/202490 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 21737 event pairs, 1051 based on Foata normal form. 4/4279 useless extension candidates. Maximal degree in co-relation 34263. Up to 4131 conditions per place. [2024-06-28 00:11:16,176 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 330 selfloop transitions, 33 changer transitions 0/366 dead transitions. [2024-06-28 00:11:16,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 366 transitions, 7077 flow [2024-06-28 00:11:16,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:11:16,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:11:16,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 00:11:16,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-28 00:11:16,178 INFO L175 Difference]: Start difference. First operand has 194 places, 340 transitions, 6203 flow. Second operand 8 states and 126 transitions. [2024-06-28 00:11:16,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 366 transitions, 7077 flow [2024-06-28 00:11:16,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 366 transitions, 6683 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 00:11:16,626 INFO L231 Difference]: Finished difference. Result has 194 places, 342 transitions, 5937 flow [2024-06-28 00:11:16,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5809, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5937, PETRI_PLACES=194, PETRI_TRANSITIONS=342} [2024-06-28 00:11:16,627 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 153 predicate places. [2024-06-28 00:11:16,627 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 342 transitions, 5937 flow [2024-06-28 00:11:16,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-28 00:11:16,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:16,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:16,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 00:11:16,631 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:11:16,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:16,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1238437158, now seen corresponding path program 5 times [2024-06-28 00:11:16,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:16,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760780982] [2024-06-28 00:11:16,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:16,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:16,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:17,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:17,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:17,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760780982] [2024-06-28 00:11:17,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760780982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:17,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:17,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:11:17,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502985862] [2024-06-28 00:11:17,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:17,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:11:17,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:17,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:11:17,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:11:18,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:11:18,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 342 transitions, 5937 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:18,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:18,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:11:18,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:19,091 INFO L124 PetriNetUnfolderBase]: 2816/4263 cut-off events. [2024-06-28 00:11:19,092 INFO L125 PetriNetUnfolderBase]: For 193638/193638 co-relation queries the response was YES. [2024-06-28 00:11:19,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34053 conditions, 4263 events. 2816/4263 cut-off events. For 193638/193638 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 21642 event pairs, 1045 based on Foata normal form. 4/4267 useless extension candidates. Maximal degree in co-relation 33960. Up to 4078 conditions per place. [2024-06-28 00:11:19,134 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 314 selfloop transitions, 53 changer transitions 0/370 dead transitions. [2024-06-28 00:11:19,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 370 transitions, 6863 flow [2024-06-28 00:11:19,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:11:19,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:11:19,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-28 00:11:19,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-28 00:11:19,135 INFO L175 Difference]: Start difference. First operand has 194 places, 342 transitions, 5937 flow. Second operand 9 states and 136 transitions. [2024-06-28 00:11:19,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 370 transitions, 6863 flow [2024-06-28 00:11:19,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 370 transitions, 6759 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 00:11:19,533 INFO L231 Difference]: Finished difference. Result has 197 places, 344 transitions, 6004 flow [2024-06-28 00:11:19,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5833, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6004, PETRI_PLACES=197, PETRI_TRANSITIONS=344} [2024-06-28 00:11:19,534 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 156 predicate places. [2024-06-28 00:11:19,534 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 344 transitions, 6004 flow [2024-06-28 00:11:19,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:19,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:19,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:19,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 00:11:19,534 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:11:19,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:19,535 INFO L85 PathProgramCache]: Analyzing trace with hash -571160346, now seen corresponding path program 1 times [2024-06-28 00:11:19,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:19,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245866819] [2024-06-28 00:11:19,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:19,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:21,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:21,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:21,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245866819] [2024-06-28 00:11:21,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245866819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:21,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:21,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:11:21,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235167502] [2024-06-28 00:11:21,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:21,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:11:21,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:21,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:11:21,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:11:21,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:11:21,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 344 transitions, 6004 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:21,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:21,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:11:21,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:23,029 INFO L124 PetriNetUnfolderBase]: 2935/4456 cut-off events. [2024-06-28 00:11:23,029 INFO L125 PetriNetUnfolderBase]: For 222711/222721 co-relation queries the response was YES. [2024-06-28 00:11:23,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35822 conditions, 4456 events. 2935/4456 cut-off events. For 222711/222721 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 22845 event pairs, 476 based on Foata normal form. 24/4480 useless extension candidates. Maximal degree in co-relation 35728. Up to 2774 conditions per place. [2024-06-28 00:11:23,069 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 206 selfloop transitions, 181 changer transitions 0/390 dead transitions. [2024-06-28 00:11:23,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 390 transitions, 7160 flow [2024-06-28 00:11:23,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:11:23,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:11:23,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-28 00:11:23,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509375 [2024-06-28 00:11:23,070 INFO L175 Difference]: Start difference. First operand has 197 places, 344 transitions, 6004 flow. Second operand 8 states and 163 transitions. [2024-06-28 00:11:23,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 390 transitions, 7160 flow [2024-06-28 00:11:23,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 390 transitions, 7011 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 00:11:23,433 INFO L231 Difference]: Finished difference. Result has 198 places, 346 transitions, 6285 flow [2024-06-28 00:11:23,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5855, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6285, PETRI_PLACES=198, PETRI_TRANSITIONS=346} [2024-06-28 00:11:23,434 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 157 predicate places. [2024-06-28 00:11:23,434 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 346 transitions, 6285 flow [2024-06-28 00:11:23,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:23,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:23,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:23,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 00:11:23,435 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:11:23,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:23,435 INFO L85 PathProgramCache]: Analyzing trace with hash 786295974, now seen corresponding path program 2 times [2024-06-28 00:11:23,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:23,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709233826] [2024-06-28 00:11:23,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:23,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:25,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:25,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:25,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709233826] [2024-06-28 00:11:25,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709233826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:25,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:25,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:11:25,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785214482] [2024-06-28 00:11:25,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:25,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:11:25,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:25,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:11:25,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:11:25,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:11:25,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 346 transitions, 6285 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:25,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:25,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:11:25,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:26,971 INFO L124 PetriNetUnfolderBase]: 3104/4735 cut-off events. [2024-06-28 00:11:26,971 INFO L125 PetriNetUnfolderBase]: For 254752/254762 co-relation queries the response was YES. [2024-06-28 00:11:27,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38866 conditions, 4735 events. 3104/4735 cut-off events. For 254752/254762 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 24926 event pairs, 669 based on Foata normal form. 24/4759 useless extension candidates. Maximal degree in co-relation 38772. Up to 3488 conditions per place. [2024-06-28 00:11:27,021 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 212 selfloop transitions, 177 changer transitions 0/392 dead transitions. [2024-06-28 00:11:27,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 392 transitions, 7455 flow [2024-06-28 00:11:27,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:11:27,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:11:27,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-28 00:11:27,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-28 00:11:27,025 INFO L175 Difference]: Start difference. First operand has 198 places, 346 transitions, 6285 flow. Second operand 8 states and 164 transitions. [2024-06-28 00:11:27,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 392 transitions, 7455 flow [2024-06-28 00:11:27,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 392 transitions, 7200 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 00:11:27,602 INFO L231 Difference]: Finished difference. Result has 202 places, 348 transitions, 6456 flow [2024-06-28 00:11:27,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6034, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6456, PETRI_PLACES=202, PETRI_TRANSITIONS=348} [2024-06-28 00:11:27,603 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 161 predicate places. [2024-06-28 00:11:27,603 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 348 transitions, 6456 flow [2024-06-28 00:11:27,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:27,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:27,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:27,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 00:11:27,604 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:11:27,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:27,605 INFO L85 PathProgramCache]: Analyzing trace with hash 786299694, now seen corresponding path program 3 times [2024-06-28 00:11:27,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:27,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92378117] [2024-06-28 00:11:27,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:27,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:29,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:29,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:29,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92378117] [2024-06-28 00:11:29,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92378117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:29,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:29,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:11:29,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498054233] [2024-06-28 00:11:29,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:29,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:11:29,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:29,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:11:29,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:11:29,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:11:29,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 348 transitions, 6456 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:29,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:29,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:11:29,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:31,042 INFO L124 PetriNetUnfolderBase]: 3068/4679 cut-off events. [2024-06-28 00:11:31,042 INFO L125 PetriNetUnfolderBase]: For 252129/252139 co-relation queries the response was YES. [2024-06-28 00:11:31,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38293 conditions, 4679 events. 3068/4679 cut-off events. For 252129/252139 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 24567 event pairs, 671 based on Foata normal form. 28/4707 useless extension candidates. Maximal degree in co-relation 38197. Up to 3588 conditions per place. [2024-06-28 00:11:31,089 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 207 selfloop transitions, 176 changer transitions 0/386 dead transitions. [2024-06-28 00:11:31,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 386 transitions, 7366 flow [2024-06-28 00:11:31,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:11:31,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:11:31,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 00:11:31,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-06-28 00:11:31,091 INFO L175 Difference]: Start difference. First operand has 202 places, 348 transitions, 6456 flow. Second operand 9 states and 166 transitions. [2024-06-28 00:11:31,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 386 transitions, 7366 flow [2024-06-28 00:11:31,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 386 transitions, 7106 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 00:11:31,636 INFO L231 Difference]: Finished difference. Result has 207 places, 348 transitions, 6555 flow [2024-06-28 00:11:31,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6196, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6555, PETRI_PLACES=207, PETRI_TRANSITIONS=348} [2024-06-28 00:11:31,637 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 166 predicate places. [2024-06-28 00:11:31,637 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 348 transitions, 6555 flow [2024-06-28 00:11:31,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:31,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:31,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:31,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 00:11:31,638 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:11:31,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:31,638 INFO L85 PathProgramCache]: Analyzing trace with hash -2117817682, now seen corresponding path program 4 times [2024-06-28 00:11:31,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:31,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911661816] [2024-06-28 00:11:31,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:31,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:33,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:33,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:33,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911661816] [2024-06-28 00:11:33,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911661816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:33,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:33,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:11:33,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400373554] [2024-06-28 00:11:33,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:33,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:11:33,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:33,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:11:33,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:11:34,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:11:34,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 348 transitions, 6555 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:34,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:34,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:11:34,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:35,226 INFO L124 PetriNetUnfolderBase]: 3143/4808 cut-off events. [2024-06-28 00:11:35,226 INFO L125 PetriNetUnfolderBase]: For 262984/262994 co-relation queries the response was YES. [2024-06-28 00:11:35,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39399 conditions, 4808 events. 3143/4808 cut-off events. For 262984/262994 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 25479 event pairs, 672 based on Foata normal form. 28/4836 useless extension candidates. Maximal degree in co-relation 39300. Up to 3933 conditions per place. [2024-06-28 00:11:35,270 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 200 selfloop transitions, 184 changer transitions 0/387 dead transitions. [2024-06-28 00:11:35,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 387 transitions, 7533 flow [2024-06-28 00:11:35,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:11:35,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:11:35,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 00:11:35,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 00:11:35,272 INFO L175 Difference]: Start difference. First operand has 207 places, 348 transitions, 6555 flow. Second operand 9 states and 165 transitions. [2024-06-28 00:11:35,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 387 transitions, 7533 flow [2024-06-28 00:11:35,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 387 transitions, 7176 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 00:11:35,747 INFO L231 Difference]: Finished difference. Result has 208 places, 349 transitions, 6607 flow [2024-06-28 00:11:35,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6198, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6607, PETRI_PLACES=208, PETRI_TRANSITIONS=349} [2024-06-28 00:11:35,747 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 167 predicate places. [2024-06-28 00:11:35,747 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 349 transitions, 6607 flow [2024-06-28 00:11:35,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:35,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:35,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:35,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 00:11:35,748 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:11:35,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:35,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1955500854, now seen corresponding path program 5 times [2024-06-28 00:11:35,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:35,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166255593] [2024-06-28 00:11:35,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:35,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:38,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:38,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:38,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166255593] [2024-06-28 00:11:38,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166255593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:38,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:38,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:11:38,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412912887] [2024-06-28 00:11:38,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:38,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:11:38,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:38,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:11:38,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:11:38,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:11:38,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 349 transitions, 6607 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:38,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:38,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:11:38,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:39,536 INFO L124 PetriNetUnfolderBase]: 3201/4906 cut-off events. [2024-06-28 00:11:39,536 INFO L125 PetriNetUnfolderBase]: For 271652/271662 co-relation queries the response was YES. [2024-06-28 00:11:39,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40199 conditions, 4906 events. 3201/4906 cut-off events. For 271652/271662 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 26194 event pairs, 672 based on Foata normal form. 24/4930 useless extension candidates. Maximal degree in co-relation 40099. Up to 3801 conditions per place. [2024-06-28 00:11:39,585 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 203 selfloop transitions, 185 changer transitions 0/391 dead transitions. [2024-06-28 00:11:39,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 391 transitions, 7611 flow [2024-06-28 00:11:39,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:11:39,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:11:39,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-28 00:11:39,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.496875 [2024-06-28 00:11:39,587 INFO L175 Difference]: Start difference. First operand has 208 places, 349 transitions, 6607 flow. Second operand 8 states and 159 transitions. [2024-06-28 00:11:39,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 391 transitions, 7611 flow [2024-06-28 00:11:40,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 391 transitions, 7228 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 00:11:40,158 INFO L231 Difference]: Finished difference. Result has 209 places, 350 transitions, 6636 flow [2024-06-28 00:11:40,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6224, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6636, PETRI_PLACES=209, PETRI_TRANSITIONS=350} [2024-06-28 00:11:40,158 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 168 predicate places. [2024-06-28 00:11:40,158 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 350 transitions, 6636 flow [2024-06-28 00:11:40,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:40,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:40,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:40,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 00:11:40,159 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:11:40,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:40,159 INFO L85 PathProgramCache]: Analyzing trace with hash 2018897460, now seen corresponding path program 6 times [2024-06-28 00:11:40,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:40,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322339006] [2024-06-28 00:11:40,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:40,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:40,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:42,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:42,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:42,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322339006] [2024-06-28 00:11:42,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322339006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:42,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:42,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:11:42,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015232386] [2024-06-28 00:11:42,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:42,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:11:42,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:42,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:11:42,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:11:42,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:11:42,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 350 transitions, 6636 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:42,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:42,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:11:42,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:43,905 INFO L124 PetriNetUnfolderBase]: 3259/5003 cut-off events. [2024-06-28 00:11:43,905 INFO L125 PetriNetUnfolderBase]: For 281642/281654 co-relation queries the response was YES. [2024-06-28 00:11:43,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40912 conditions, 5003 events. 3259/5003 cut-off events. For 281642/281654 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 27053 event pairs, 702 based on Foata normal form. 26/5029 useless extension candidates. Maximal degree in co-relation 40812. Up to 3673 conditions per place. [2024-06-28 00:11:43,959 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 191 selfloop transitions, 206 changer transitions 0/400 dead transitions. [2024-06-28 00:11:43,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 400 transitions, 7876 flow [2024-06-28 00:11:43,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:11:43,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:11:43,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-28 00:11:43,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-06-28 00:11:43,961 INFO L175 Difference]: Start difference. First operand has 209 places, 350 transitions, 6636 flow. Second operand 9 states and 177 transitions. [2024-06-28 00:11:43,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 400 transitions, 7876 flow [2024-06-28 00:11:44,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 400 transitions, 7486 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 00:11:44,574 INFO L231 Difference]: Finished difference. Result has 212 places, 351 transitions, 6700 flow [2024-06-28 00:11:44,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6246, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6700, PETRI_PLACES=212, PETRI_TRANSITIONS=351} [2024-06-28 00:11:44,575 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 171 predicate places. [2024-06-28 00:11:44,575 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 351 transitions, 6700 flow [2024-06-28 00:11:44,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:44,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:44,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:44,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 00:11:44,575 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:11:44,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:44,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1935784290, now seen corresponding path program 7 times [2024-06-28 00:11:44,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:44,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507762457] [2024-06-28 00:11:44,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:44,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:46,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:46,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:46,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507762457] [2024-06-28 00:11:46,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507762457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:46,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:46,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:11:46,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982992936] [2024-06-28 00:11:46,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:46,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:11:46,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:46,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:11:46,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:11:46,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:11:46,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 351 transitions, 6700 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:46,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:46,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:11:46,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:48,179 INFO L124 PetriNetUnfolderBase]: 3223/4947 cut-off events. [2024-06-28 00:11:48,179 INFO L125 PetriNetUnfolderBase]: For 274091/274103 co-relation queries the response was YES. [2024-06-28 00:11:48,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39871 conditions, 4947 events. 3223/4947 cut-off events. For 274091/274103 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 26708 event pairs, 824 based on Foata normal form. 30/4977 useless extension candidates. Maximal degree in co-relation 39769. Up to 3969 conditions per place. [2024-06-28 00:11:48,225 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 191 selfloop transitions, 201 changer transitions 0/395 dead transitions. [2024-06-28 00:11:48,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 395 transitions, 7698 flow [2024-06-28 00:11:48,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:11:48,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:11:48,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-28 00:11:48,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-28 00:11:48,226 INFO L175 Difference]: Start difference. First operand has 212 places, 351 transitions, 6700 flow. Second operand 8 states and 164 transitions. [2024-06-28 00:11:48,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 395 transitions, 7698 flow [2024-06-28 00:11:48,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 395 transitions, 7131 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 00:11:48,864 INFO L231 Difference]: Finished difference. Result has 212 places, 351 transitions, 6542 flow [2024-06-28 00:11:48,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6133, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6542, PETRI_PLACES=212, PETRI_TRANSITIONS=351} [2024-06-28 00:11:48,865 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 171 predicate places. [2024-06-28 00:11:48,865 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 351 transitions, 6542 flow [2024-06-28 00:11:48,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:48,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:48,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:48,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 00:11:48,866 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:11:48,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:48,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1941498582, now seen corresponding path program 1 times [2024-06-28 00:11:48,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:48,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890097064] [2024-06-28 00:11:48,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:48,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:50,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:50,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:50,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890097064] [2024-06-28 00:11:50,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890097064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:50,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:50,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:11:50,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031900410] [2024-06-28 00:11:50,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:50,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:11:50,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:50,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:11:50,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:11:50,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:11:50,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 351 transitions, 6542 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:50,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:50,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:11:50,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:51,794 INFO L124 PetriNetUnfolderBase]: 3240/4969 cut-off events. [2024-06-28 00:11:51,794 INFO L125 PetriNetUnfolderBase]: For 265064/265074 co-relation queries the response was YES. [2024-06-28 00:11:51,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39499 conditions, 4969 events. 3240/4969 cut-off events. For 265064/265074 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 26730 event pairs, 691 based on Foata normal form. 12/4981 useless extension candidates. Maximal degree in co-relation 39398. Up to 4288 conditions per place. [2024-06-28 00:11:51,848 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 205 selfloop transitions, 174 changer transitions 0/382 dead transitions. [2024-06-28 00:11:51,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 382 transitions, 7442 flow [2024-06-28 00:11:51,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:11:51,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:11:51,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 00:11:51,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-28 00:11:51,849 INFO L175 Difference]: Start difference. First operand has 212 places, 351 transitions, 6542 flow. Second operand 8 states and 148 transitions. [2024-06-28 00:11:51,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 382 transitions, 7442 flow [2024-06-28 00:11:52,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 382 transitions, 7023 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 00:11:52,484 INFO L231 Difference]: Finished difference. Result has 214 places, 353 transitions, 6529 flow [2024-06-28 00:11:52,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6123, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6529, PETRI_PLACES=214, PETRI_TRANSITIONS=353} [2024-06-28 00:11:52,484 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 173 predicate places. [2024-06-28 00:11:52,484 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 353 transitions, 6529 flow [2024-06-28 00:11:52,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:52,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:52,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:52,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 00:11:52,485 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:11:52,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:52,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1941290820, now seen corresponding path program 8 times [2024-06-28 00:11:52,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:52,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388214790] [2024-06-28 00:11:52,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:52,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:54,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:54,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:54,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388214790] [2024-06-28 00:11:54,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388214790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:54,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:54,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:11:54,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596013440] [2024-06-28 00:11:54,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:54,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:11:54,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:54,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:11:54,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:11:54,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:11:54,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 353 transitions, 6529 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:54,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:54,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:11:54,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:55,492 INFO L124 PetriNetUnfolderBase]: 3204/4918 cut-off events. [2024-06-28 00:11:55,492 INFO L125 PetriNetUnfolderBase]: For 268787/268799 co-relation queries the response was YES. [2024-06-28 00:11:55,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38331 conditions, 4918 events. 3204/4918 cut-off events. For 268787/268799 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 26539 event pairs, 676 based on Foata normal form. 30/4948 useless extension candidates. Maximal degree in co-relation 38229. Up to 3910 conditions per place. [2024-06-28 00:11:55,546 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 187 selfloop transitions, 202 changer transitions 0/392 dead transitions. [2024-06-28 00:11:55,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 392 transitions, 7511 flow [2024-06-28 00:11:55,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:11:55,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:11:55,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-28 00:11:55,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49375 [2024-06-28 00:11:55,548 INFO L175 Difference]: Start difference. First operand has 214 places, 353 transitions, 6529 flow. Second operand 8 states and 158 transitions. [2024-06-28 00:11:55,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 392 transitions, 7511 flow [2024-06-28 00:11:56,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 392 transitions, 7107 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 00:11:56,193 INFO L231 Difference]: Finished difference. Result has 216 places, 353 transitions, 6548 flow [2024-06-28 00:11:56,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6133, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6548, PETRI_PLACES=216, PETRI_TRANSITIONS=353} [2024-06-28 00:11:56,193 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 175 predicate places. [2024-06-28 00:11:56,194 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 353 transitions, 6548 flow [2024-06-28 00:11:56,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:56,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:56,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:56,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 00:11:56,194 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:11:56,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:56,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1935934392, now seen corresponding path program 2 times [2024-06-28 00:11:56,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:56,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161382430] [2024-06-28 00:11:56,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:56,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:58,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:58,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:58,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161382430] [2024-06-28 00:11:58,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161382430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:58,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:58,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:11:58,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059413636] [2024-06-28 00:11:58,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:58,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:11:58,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:58,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:11:58,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:11:58,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:11:58,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 353 transitions, 6548 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:58,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:58,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:11:58,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:59,557 INFO L124 PetriNetUnfolderBase]: 3221/4940 cut-off events. [2024-06-28 00:11:59,557 INFO L125 PetriNetUnfolderBase]: For 258329/258339 co-relation queries the response was YES. [2024-06-28 00:11:59,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38706 conditions, 4940 events. 3221/4940 cut-off events. For 258329/258339 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 26571 event pairs, 690 based on Foata normal form. 12/4952 useless extension candidates. Maximal degree in co-relation 38602. Up to 4259 conditions per place. [2024-06-28 00:11:59,609 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 197 selfloop transitions, 185 changer transitions 0/385 dead transitions. [2024-06-28 00:11:59,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 385 transitions, 7462 flow [2024-06-28 00:11:59,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:11:59,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:11:59,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 00:11:59,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-28 00:11:59,611 INFO L175 Difference]: Start difference. First operand has 216 places, 353 transitions, 6548 flow. Second operand 9 states and 157 transitions. [2024-06-28 00:11:59,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 385 transitions, 7462 flow [2024-06-28 00:12:00,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 385 transitions, 7163 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 00:12:00,248 INFO L231 Difference]: Finished difference. Result has 218 places, 355 transitions, 6681 flow [2024-06-28 00:12:00,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6249, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6681, PETRI_PLACES=218, PETRI_TRANSITIONS=355} [2024-06-28 00:12:00,249 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 177 predicate places. [2024-06-28 00:12:00,249 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 355 transitions, 6681 flow [2024-06-28 00:12:00,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:00,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:00,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:00,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 00:12:00,249 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:12:00,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:00,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1941506022, now seen corresponding path program 3 times [2024-06-28 00:12:00,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:00,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83093864] [2024-06-28 00:12:00,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:00,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:02,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:02,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:02,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83093864] [2024-06-28 00:12:02,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83093864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:02,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:02,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:12:02,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823126700] [2024-06-28 00:12:02,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:02,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:12:02,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:02,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:12:02,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:12:02,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:12:02,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 355 transitions, 6681 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 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) [2024-06-28 00:12:02,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:02,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:12:02,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:03,289 INFO L124 PetriNetUnfolderBase]: 3287/5042 cut-off events. [2024-06-28 00:12:03,290 INFO L125 PetriNetUnfolderBase]: For 275288/275298 co-relation queries the response was YES. [2024-06-28 00:12:03,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39658 conditions, 5042 events. 3287/5042 cut-off events. For 275288/275298 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 27245 event pairs, 660 based on Foata normal form. 12/5054 useless extension candidates. Maximal degree in co-relation 39553. Up to 4200 conditions per place. [2024-06-28 00:12:03,342 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 208 selfloop transitions, 184 changer transitions 0/395 dead transitions. [2024-06-28 00:12:03,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 395 transitions, 7797 flow [2024-06-28 00:12:03,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:12:03,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:12:03,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 00:12:03,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 00:12:03,344 INFO L175 Difference]: Start difference. First operand has 218 places, 355 transitions, 6681 flow. Second operand 9 states and 156 transitions. [2024-06-28 00:12:03,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 395 transitions, 7797 flow [2024-06-28 00:12:03,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 395 transitions, 7263 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 00:12:03,993 INFO L231 Difference]: Finished difference. Result has 220 places, 364 transitions, 6699 flow [2024-06-28 00:12:03,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6147, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6699, PETRI_PLACES=220, PETRI_TRANSITIONS=364} [2024-06-28 00:12:03,993 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 179 predicate places. [2024-06-28 00:12:03,993 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 364 transitions, 6699 flow [2024-06-28 00:12:03,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 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) [2024-06-28 00:12:03,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:03,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:03,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 00:12:03,994 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:12:03,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:03,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1587292344, now seen corresponding path program 4 times [2024-06-28 00:12:03,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:03,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481904503] [2024-06-28 00:12:03,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:03,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:05,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:05,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:05,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481904503] [2024-06-28 00:12:05,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481904503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:05,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:05,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:12:05,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176626511] [2024-06-28 00:12:05,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:05,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:12:05,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:05,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:12:05,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:12:05,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:12:05,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 364 transitions, 6699 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:05,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:05,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:12:05,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:06,652 INFO L124 PetriNetUnfolderBase]: 3310/5096 cut-off events. [2024-06-28 00:12:06,652 INFO L125 PetriNetUnfolderBase]: For 285687/285689 co-relation queries the response was YES. [2024-06-28 00:12:06,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40096 conditions, 5096 events. 3310/5096 cut-off events. For 285687/285689 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 27754 event pairs, 1389 based on Foata normal form. 6/5102 useless extension candidates. Maximal degree in co-relation 39989. Up to 4516 conditions per place. [2024-06-28 00:12:06,701 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 221 selfloop transitions, 171 changer transitions 0/395 dead transitions. [2024-06-28 00:12:06,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 395 transitions, 7707 flow [2024-06-28 00:12:06,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:12:06,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:12:06,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 00:12:06,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-28 00:12:06,702 INFO L175 Difference]: Start difference. First operand has 220 places, 364 transitions, 6699 flow. Second operand 8 states and 137 transitions. [2024-06-28 00:12:06,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 395 transitions, 7707 flow [2024-06-28 00:12:07,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 395 transitions, 7282 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-28 00:12:07,400 INFO L231 Difference]: Finished difference. Result has 222 places, 368 transitions, 6720 flow [2024-06-28 00:12:07,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6286, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6720, PETRI_PLACES=222, PETRI_TRANSITIONS=368} [2024-06-28 00:12:07,401 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 181 predicate places. [2024-06-28 00:12:07,401 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 368 transitions, 6720 flow [2024-06-28 00:12:07,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:07,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:07,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:07,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 00:12:07,401 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:12:07,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:07,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1581929964, now seen corresponding path program 5 times [2024-06-28 00:12:07,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:07,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690922054] [2024-06-28 00:12:07,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:07,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:08,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:08,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:08,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690922054] [2024-06-28 00:12:08,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690922054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:08,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:08,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:12:08,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089493292] [2024-06-28 00:12:08,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:08,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:12:08,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:08,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:12:08,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:12:08,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:12:08,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 368 transitions, 6720 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:08,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:08,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:12:08,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:10,024 INFO L124 PetriNetUnfolderBase]: 3338/5140 cut-off events. [2024-06-28 00:12:10,024 INFO L125 PetriNetUnfolderBase]: For 291166/291168 co-relation queries the response was YES. [2024-06-28 00:12:10,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40433 conditions, 5140 events. 3338/5140 cut-off events. For 291166/291168 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 28099 event pairs, 1392 based on Foata normal form. 4/5144 useless extension candidates. Maximal degree in co-relation 40325. Up to 4567 conditions per place. [2024-06-28 00:12:10,080 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 236 selfloop transitions, 158 changer transitions 0/397 dead transitions. [2024-06-28 00:12:10,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 397 transitions, 7702 flow [2024-06-28 00:12:10,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:12:10,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:12:10,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 00:12:10,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-28 00:12:10,082 INFO L175 Difference]: Start difference. First operand has 222 places, 368 transitions, 6720 flow. Second operand 8 states and 135 transitions. [2024-06-28 00:12:10,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 397 transitions, 7702 flow [2024-06-28 00:12:10,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 397 transitions, 7312 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 00:12:10,761 INFO L231 Difference]: Finished difference. Result has 224 places, 372 transitions, 6740 flow [2024-06-28 00:12:10,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6330, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6740, PETRI_PLACES=224, PETRI_TRANSITIONS=372} [2024-06-28 00:12:10,762 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 183 predicate places. [2024-06-28 00:12:10,762 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 372 transitions, 6740 flow [2024-06-28 00:12:10,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:10,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:10,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:10,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 00:12:10,762 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:12:10,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:10,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1213220372, now seen corresponding path program 6 times [2024-06-28 00:12:10,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:10,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875674186] [2024-06-28 00:12:10,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:10,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:12,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:12,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:12,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875674186] [2024-06-28 00:12:12,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875674186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:12,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:12,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:12:12,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677211394] [2024-06-28 00:12:12,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:12,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:12:12,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:12,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:12:12,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:12:12,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:12:12,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 372 transitions, 6740 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:12,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:12,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:12:12,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:13,417 INFO L124 PetriNetUnfolderBase]: 3366/5176 cut-off events. [2024-06-28 00:12:13,417 INFO L125 PetriNetUnfolderBase]: For 302333/302335 co-relation queries the response was YES. [2024-06-28 00:12:13,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40881 conditions, 5176 events. 3366/5176 cut-off events. For 302333/302335 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 28196 event pairs, 1384 based on Foata normal form. 4/5180 useless extension candidates. Maximal degree in co-relation 40772. Up to 4399 conditions per place. [2024-06-28 00:12:13,472 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 231 selfloop transitions, 167 changer transitions 0/401 dead transitions. [2024-06-28 00:12:13,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 401 transitions, 7710 flow [2024-06-28 00:12:13,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:12:13,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:12:13,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 00:12:13,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39444444444444443 [2024-06-28 00:12:13,473 INFO L175 Difference]: Start difference. First operand has 224 places, 372 transitions, 6740 flow. Second operand 9 states and 142 transitions. [2024-06-28 00:12:13,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 401 transitions, 7710 flow [2024-06-28 00:12:14,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 401 transitions, 7354 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 00:12:14,146 INFO L231 Difference]: Finished difference. Result has 227 places, 376 transitions, 6813 flow [2024-06-28 00:12:14,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6384, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6813, PETRI_PLACES=227, PETRI_TRANSITIONS=376} [2024-06-28 00:12:14,146 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 186 predicate places. [2024-06-28 00:12:14,147 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 376 transitions, 6813 flow [2024-06-28 00:12:14,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:14,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:14,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:14,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 00:12:14,147 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:12:14,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:14,148 INFO L85 PathProgramCache]: Analyzing trace with hash -941809562, now seen corresponding path program 7 times [2024-06-28 00:12:14,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:14,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372836001] [2024-06-28 00:12:14,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:14,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:15,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:15,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:15,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372836001] [2024-06-28 00:12:15,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372836001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:15,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:15,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:12:15,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326345106] [2024-06-28 00:12:15,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:15,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:12:15,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:15,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:12:15,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:12:15,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:12:15,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 376 transitions, 6813 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 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) [2024-06-28 00:12:15,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:15,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:12:15,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:16,633 INFO L124 PetriNetUnfolderBase]: 3383/5202 cut-off events. [2024-06-28 00:12:16,633 INFO L125 PetriNetUnfolderBase]: For 313630/313634 co-relation queries the response was YES. [2024-06-28 00:12:16,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41455 conditions, 5202 events. 3383/5202 cut-off events. For 313630/313634 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 28377 event pairs, 1427 based on Foata normal form. 8/5210 useless extension candidates. Maximal degree in co-relation 41345. Up to 5061 conditions per place. [2024-06-28 00:12:16,682 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 380 selfloop transitions, 20 changer transitions 0/403 dead transitions. [2024-06-28 00:12:16,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 403 transitions, 7763 flow [2024-06-28 00:12:16,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:12:16,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:12:16,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-28 00:12:16,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36944444444444446 [2024-06-28 00:12:16,684 INFO L175 Difference]: Start difference. First operand has 227 places, 376 transitions, 6813 flow. Second operand 9 states and 133 transitions. [2024-06-28 00:12:16,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 403 transitions, 7763 flow [2024-06-28 00:12:17,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 403 transitions, 7382 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 00:12:17,463 INFO L231 Difference]: Finished difference. Result has 229 places, 378 transitions, 6551 flow [2024-06-28 00:12:17,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6432, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6551, PETRI_PLACES=229, PETRI_TRANSITIONS=378} [2024-06-28 00:12:17,463 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 188 predicate places. [2024-06-28 00:12:17,463 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 378 transitions, 6551 flow [2024-06-28 00:12:17,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 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) [2024-06-28 00:12:17,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:17,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:17,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 00:12:17,464 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:12:17,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:17,464 INFO L85 PathProgramCache]: Analyzing trace with hash -951013772, now seen corresponding path program 8 times [2024-06-28 00:12:17,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:17,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936502095] [2024-06-28 00:12:17,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:17,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:18,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:18,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:18,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936502095] [2024-06-28 00:12:18,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936502095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:18,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:18,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:12:18,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822651762] [2024-06-28 00:12:18,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:18,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:12:18,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:18,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:12:18,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:12:18,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:12:18,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 378 transitions, 6551 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 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) [2024-06-28 00:12:18,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:18,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:12:18,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:20,055 INFO L124 PetriNetUnfolderBase]: 3400/5229 cut-off events. [2024-06-28 00:12:20,055 INFO L125 PetriNetUnfolderBase]: For 322209/322213 co-relation queries the response was YES. [2024-06-28 00:12:20,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41354 conditions, 5229 events. 3400/5229 cut-off events. For 322209/322213 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 28564 event pairs, 1453 based on Foata normal form. 8/5237 useless extension candidates. Maximal degree in co-relation 41243. Up to 5074 conditions per place. [2024-06-28 00:12:20,112 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 354 selfloop transitions, 46 changer transitions 0/403 dead transitions. [2024-06-28 00:12:20,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 403 transitions, 7521 flow [2024-06-28 00:12:20,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:12:20,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:12:20,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-28 00:12:20,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 00:12:20,113 INFO L175 Difference]: Start difference. First operand has 229 places, 378 transitions, 6551 flow. Second operand 8 states and 128 transitions. [2024-06-28 00:12:20,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 403 transitions, 7521 flow [2024-06-28 00:12:20,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 403 transitions, 7420 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-28 00:12:20,947 INFO L231 Difference]: Finished difference. Result has 230 places, 380 transitions, 6627 flow [2024-06-28 00:12:20,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6450, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6627, PETRI_PLACES=230, PETRI_TRANSITIONS=380} [2024-06-28 00:12:20,947 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 189 predicate places. [2024-06-28 00:12:20,947 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 380 transitions, 6627 flow [2024-06-28 00:12:20,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 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) [2024-06-28 00:12:20,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:20,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:20,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 00:12:20,948 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:12:20,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:20,948 INFO L85 PathProgramCache]: Analyzing trace with hash -951006332, now seen corresponding path program 9 times [2024-06-28 00:12:20,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:20,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488941475] [2024-06-28 00:12:20,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:20,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:22,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:22,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:22,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488941475] [2024-06-28 00:12:22,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488941475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:22,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:22,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:12:22,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020211887] [2024-06-28 00:12:22,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:22,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:12:22,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:22,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:12:22,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:12:22,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:12:22,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 380 transitions, 6627 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 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) [2024-06-28 00:12:22,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:22,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:12:22,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:23,599 INFO L124 PetriNetUnfolderBase]: 3434/5283 cut-off events. [2024-06-28 00:12:23,600 INFO L125 PetriNetUnfolderBase]: For 334626/334630 co-relation queries the response was YES. [2024-06-28 00:12:23,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41917 conditions, 5283 events. 3434/5283 cut-off events. For 334626/334630 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 28967 event pairs, 1457 based on Foata normal form. 8/5291 useless extension candidates. Maximal degree in co-relation 41805. Up to 5084 conditions per place. [2024-06-28 00:12:23,657 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 359 selfloop transitions, 46 changer transitions 0/408 dead transitions. [2024-06-28 00:12:23,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 408 transitions, 7611 flow [2024-06-28 00:12:23,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:12:23,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:12:23,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 00:12:23,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-28 00:12:23,659 INFO L175 Difference]: Start difference. First operand has 230 places, 380 transitions, 6627 flow. Second operand 8 states and 129 transitions. [2024-06-28 00:12:23,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 408 transitions, 7611 flow [2024-06-28 00:12:24,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 408 transitions, 7417 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 00:12:24,525 INFO L231 Difference]: Finished difference. Result has 233 places, 384 transitions, 6633 flow [2024-06-28 00:12:24,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6433, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6633, PETRI_PLACES=233, PETRI_TRANSITIONS=384} [2024-06-28 00:12:24,526 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 192 predicate places. [2024-06-28 00:12:24,526 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 384 transitions, 6633 flow [2024-06-28 00:12:24,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 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) [2024-06-28 00:12:24,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:24,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:24,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 00:12:24,527 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:12:24,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:24,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1417474470, now seen corresponding path program 10 times [2024-06-28 00:12:24,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:24,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288993797] [2024-06-28 00:12:24,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:24,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:25,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:25,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:25,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288993797] [2024-06-28 00:12:25,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288993797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:25,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:25,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:12:25,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326817501] [2024-06-28 00:12:25,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:25,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:12:25,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:25,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:12:25,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:12:25,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:12:25,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 384 transitions, 6633 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 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) [2024-06-28 00:12:25,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:25,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:12:25,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:27,219 INFO L124 PetriNetUnfolderBase]: 3451/5310 cut-off events. [2024-06-28 00:12:27,219 INFO L125 PetriNetUnfolderBase]: For 345836/345840 co-relation queries the response was YES. [2024-06-28 00:12:27,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42382 conditions, 5310 events. 3451/5310 cut-off events. For 345836/345840 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 29123 event pairs, 1463 based on Foata normal form. 8/5318 useless extension candidates. Maximal degree in co-relation 42268. Up to 5091 conditions per place. [2024-06-28 00:12:27,271 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 370 selfloop transitions, 42 changer transitions 0/415 dead transitions. [2024-06-28 00:12:27,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 415 transitions, 7947 flow [2024-06-28 00:12:27,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:12:27,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:12:27,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-28 00:12:27,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-28 00:12:27,273 INFO L175 Difference]: Start difference. First operand has 233 places, 384 transitions, 6633 flow. Second operand 9 states and 138 transitions. [2024-06-28 00:12:27,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 415 transitions, 7947 flow [2024-06-28 00:12:28,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 415 transitions, 7795 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-28 00:12:28,234 INFO L231 Difference]: Finished difference. Result has 237 places, 388 transitions, 6736 flow [2024-06-28 00:12:28,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6481, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6736, PETRI_PLACES=237, PETRI_TRANSITIONS=388} [2024-06-28 00:12:28,235 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 196 predicate places. [2024-06-28 00:12:28,235 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 388 transitions, 6736 flow [2024-06-28 00:12:28,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 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) [2024-06-28 00:12:28,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:28,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:28,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 00:12:28,236 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:12:28,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:28,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1417265220, now seen corresponding path program 11 times [2024-06-28 00:12:28,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:28,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569704375] [2024-06-28 00:12:28,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:28,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:29,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:29,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:29,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569704375] [2024-06-28 00:12:29,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569704375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:29,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:29,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:12:29,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464067802] [2024-06-28 00:12:29,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:29,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:12:29,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:29,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:12:29,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:12:29,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:12:29,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 388 transitions, 6736 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:29,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:29,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:12:29,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:30,952 INFO L124 PetriNetUnfolderBase]: 3443/5299 cut-off events. [2024-06-28 00:12:30,952 INFO L125 PetriNetUnfolderBase]: For 349326/349330 co-relation queries the response was YES. [2024-06-28 00:12:30,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42119 conditions, 5299 events. 3443/5299 cut-off events. For 349326/349330 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 29050 event pairs, 1460 based on Foata normal form. 8/5307 useless extension candidates. Maximal degree in co-relation 42004. Up to 5129 conditions per place. [2024-06-28 00:12:31,010 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 368 selfloop transitions, 42 changer transitions 0/413 dead transitions. [2024-06-28 00:12:31,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 413 transitions, 7678 flow [2024-06-28 00:12:31,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:12:31,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:12:31,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-28 00:12:31,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 00:12:31,012 INFO L175 Difference]: Start difference. First operand has 237 places, 388 transitions, 6736 flow. Second operand 8 states and 128 transitions. [2024-06-28 00:12:31,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 413 transitions, 7678 flow [2024-06-28 00:12:32,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 413 transitions, 7506 flow, removed 77 selfloop flow, removed 4 redundant places. [2024-06-28 00:12:32,121 INFO L231 Difference]: Finished difference. Result has 241 places, 388 transitions, 6657 flow [2024-06-28 00:12:32,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6564, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6657, PETRI_PLACES=241, PETRI_TRANSITIONS=388} [2024-06-28 00:12:32,121 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 200 predicate places. [2024-06-28 00:12:32,121 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 388 transitions, 6657 flow [2024-06-28 00:12:32,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:32,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:32,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:32,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 00:12:32,121 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:12:32,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:32,122 INFO L85 PathProgramCache]: Analyzing trace with hash 518134397, now seen corresponding path program 1 times [2024-06-28 00:12:32,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:32,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060031746] [2024-06-28 00:12:32,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:32,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:33,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:33,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:33,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060031746] [2024-06-28 00:12:33,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060031746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:33,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:33,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:12:33,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740631970] [2024-06-28 00:12:33,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:33,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:12:33,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:33,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:12:33,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:12:33,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:12:33,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 388 transitions, 6657 flow. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:33,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:33,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:12:33,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:35,082 INFO L124 PetriNetUnfolderBase]: 3453/5310 cut-off events. [2024-06-28 00:12:35,083 INFO L125 PetriNetUnfolderBase]: For 352876/352876 co-relation queries the response was YES. [2024-06-28 00:12:35,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42006 conditions, 5310 events. 3453/5310 cut-off events. For 352876/352876 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 29033 event pairs, 1458 based on Foata normal form. 2/5312 useless extension candidates. Maximal degree in co-relation 41890. Up to 5210 conditions per place. [2024-06-28 00:12:35,141 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 390 selfloop transitions, 25 changer transitions 0/418 dead transitions. [2024-06-28 00:12:35,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 418 transitions, 7780 flow [2024-06-28 00:12:35,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:12:35,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:12:35,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-06-28 00:12:35,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 00:12:35,142 INFO L175 Difference]: Start difference. First operand has 241 places, 388 transitions, 6657 flow. Second operand 7 states and 112 transitions. [2024-06-28 00:12:35,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 418 transitions, 7780 flow [2024-06-28 00:12:36,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 418 transitions, 7659 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 00:12:36,008 INFO L231 Difference]: Finished difference. Result has 243 places, 400 transitions, 6739 flow [2024-06-28 00:12:36,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6536, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6739, PETRI_PLACES=243, PETRI_TRANSITIONS=400} [2024-06-28 00:12:36,009 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 202 predicate places. [2024-06-28 00:12:36,009 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 400 transitions, 6739 flow [2024-06-28 00:12:36,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:36,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:36,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:36,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 00:12:36,009 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:12:36,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:36,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1126394721, now seen corresponding path program 2 times [2024-06-28 00:12:36,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:36,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718129972] [2024-06-28 00:12:36,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:36,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:37,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:37,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:37,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718129972] [2024-06-28 00:12:37,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718129972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:37,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:37,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:12:37,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720435473] [2024-06-28 00:12:37,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:37,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:12:37,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:37,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:12:37,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:12:37,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:12:37,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 400 transitions, 6739 flow. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:37,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:37,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:12:37,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:39,067 INFO L124 PetriNetUnfolderBase]: 3498/5374 cut-off events. [2024-06-28 00:12:39,067 INFO L125 PetriNetUnfolderBase]: For 370717/370717 co-relation queries the response was YES. [2024-06-28 00:12:39,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42875 conditions, 5374 events. 3498/5374 cut-off events. For 370717/370717 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 29397 event pairs, 1458 based on Foata normal form. 6/5380 useless extension candidates. Maximal degree in co-relation 42755. Up to 5263 conditions per place. [2024-06-28 00:12:39,123 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 390 selfloop transitions, 36 changer transitions 0/429 dead transitions. [2024-06-28 00:12:39,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 429 transitions, 7811 flow [2024-06-28 00:12:39,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:12:39,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:12:39,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-28 00:12:39,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-28 00:12:39,129 INFO L175 Difference]: Start difference. First operand has 243 places, 400 transitions, 6739 flow. Second operand 8 states and 121 transitions. [2024-06-28 00:12:39,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 429 transitions, 7811 flow [2024-06-28 00:12:40,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 429 transitions, 7770 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-06-28 00:12:40,183 INFO L231 Difference]: Finished difference. Result has 250 places, 413 transitions, 6953 flow [2024-06-28 00:12:40,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6710, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6953, PETRI_PLACES=250, PETRI_TRANSITIONS=413} [2024-06-28 00:12:40,183 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 209 predicate places. [2024-06-28 00:12:40,183 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 413 transitions, 6953 flow [2024-06-28 00:12:40,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:40,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:40,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:40,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 00:12:40,184 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:12:40,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:40,184 INFO L85 PathProgramCache]: Analyzing trace with hash 930557117, now seen corresponding path program 3 times [2024-06-28 00:12:40,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:40,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972369702] [2024-06-28 00:12:40,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:40,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:42,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:42,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:42,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972369702] [2024-06-28 00:12:42,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972369702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:42,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:42,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:12:42,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428931152] [2024-06-28 00:12:42,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:42,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:12:42,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:42,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:12:42,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:12:42,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:12:42,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 413 transitions, 6953 flow. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:42,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:42,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:12:42,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:43,512 INFO L124 PetriNetUnfolderBase]: 3512/5395 cut-off events. [2024-06-28 00:12:43,512 INFO L125 PetriNetUnfolderBase]: For 379088/379092 co-relation queries the response was YES. [2024-06-28 00:12:43,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43509 conditions, 5395 events. 3512/5395 cut-off events. For 379088/379092 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 29527 event pairs, 1462 based on Foata normal form. 10/5405 useless extension candidates. Maximal degree in co-relation 43386. Up to 5261 conditions per place. [2024-06-28 00:12:43,579 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 387 selfloop transitions, 42 changer transitions 0/432 dead transitions. [2024-06-28 00:12:43,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 432 transitions, 7917 flow [2024-06-28 00:12:43,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:12:43,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:12:43,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-06-28 00:12:43,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-28 00:12:43,580 INFO L175 Difference]: Start difference. First operand has 250 places, 413 transitions, 6953 flow. Second operand 9 states and 130 transitions. [2024-06-28 00:12:43,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 432 transitions, 7917 flow [2024-06-28 00:12:44,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 432 transitions, 7770 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-28 00:12:44,907 INFO L231 Difference]: Finished difference. Result has 254 places, 416 transitions, 6953 flow [2024-06-28 00:12:44,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6806, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6953, PETRI_PLACES=254, PETRI_TRANSITIONS=416} [2024-06-28 00:12:44,907 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 213 predicate places. [2024-06-28 00:12:44,907 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 416 transitions, 6953 flow [2024-06-28 00:12:44,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:44,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:44,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:44,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 00:12:44,908 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:12:44,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:44,909 INFO L85 PathProgramCache]: Analyzing trace with hash -949016937, now seen corresponding path program 1 times [2024-06-28 00:12:44,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:44,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157412780] [2024-06-28 00:12:44,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:44,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:47,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:47,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:47,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157412780] [2024-06-28 00:12:47,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157412780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:47,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:47,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:12:47,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269083218] [2024-06-28 00:12:47,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:47,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:12:47,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:47,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:12:47,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:12:47,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:12:47,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 416 transitions, 6953 flow. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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) [2024-06-28 00:12:47,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:47,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:12:47,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:48,965 INFO L124 PetriNetUnfolderBase]: 3507/5387 cut-off events. [2024-06-28 00:12:48,965 INFO L125 PetriNetUnfolderBase]: For 379385/379385 co-relation queries the response was YES. [2024-06-28 00:12:49,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43786 conditions, 5387 events. 3507/5387 cut-off events. For 379385/379385 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 29459 event pairs, 1457 based on Foata normal form. 2/5389 useless extension candidates. Maximal degree in co-relation 43663. Up to 5323 conditions per place. [2024-06-28 00:12:49,024 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 408 selfloop transitions, 17 changer transitions 0/428 dead transitions. [2024-06-28 00:12:49,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 428 transitions, 7861 flow [2024-06-28 00:12:49,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:12:49,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:12:49,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-28 00:12:49,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-28 00:12:49,025 INFO L175 Difference]: Start difference. First operand has 254 places, 416 transitions, 6953 flow. Second operand 8 states and 108 transitions. [2024-06-28 00:12:49,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 428 transitions, 7861 flow [2024-06-28 00:12:50,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 428 transitions, 7734 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-28 00:12:50,096 INFO L231 Difference]: Finished difference. Result has 254 places, 418 transitions, 6899 flow [2024-06-28 00:12:50,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6826, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6899, PETRI_PLACES=254, PETRI_TRANSITIONS=418} [2024-06-28 00:12:50,097 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 213 predicate places. [2024-06-28 00:12:50,097 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 418 transitions, 6899 flow [2024-06-28 00:12:50,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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) [2024-06-28 00:12:50,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:50,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:50,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 00:12:50,097 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:12:50,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:50,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1223184681, now seen corresponding path program 1 times [2024-06-28 00:12:50,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:50,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506094097] [2024-06-28 00:12:50,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:50,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:52,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:52,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:52,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506094097] [2024-06-28 00:12:52,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506094097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:52,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:52,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:12:52,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940760333] [2024-06-28 00:12:52,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:52,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:12:52,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:52,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:12:52,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:12:52,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:12:52,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 418 transitions, 6899 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:52,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:52,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:12:52,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:54,278 INFO L124 PetriNetUnfolderBase]: 3548/5460 cut-off events. [2024-06-28 00:12:54,278 INFO L125 PetriNetUnfolderBase]: For 410713/410723 co-relation queries the response was YES. [2024-06-28 00:12:54,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44377 conditions, 5460 events. 3548/5460 cut-off events. For 410713/410723 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 30061 event pairs, 686 based on Foata normal form. 20/5480 useless extension candidates. Maximal degree in co-relation 44255. Up to 4582 conditions per place. [2024-06-28 00:12:54,338 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 259 selfloop transitions, 192 changer transitions 0/454 dead transitions. [2024-06-28 00:12:54,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 454 transitions, 8009 flow [2024-06-28 00:12:54,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:12:54,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:12:54,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 00:12:54,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478125 [2024-06-28 00:12:54,340 INFO L175 Difference]: Start difference. First operand has 254 places, 418 transitions, 6899 flow. Second operand 8 states and 153 transitions. [2024-06-28 00:12:54,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 454 transitions, 8009 flow [2024-06-28 00:12:55,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 454 transitions, 7920 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 00:12:55,542 INFO L231 Difference]: Finished difference. Result has 254 places, 419 transitions, 7257 flow [2024-06-28 00:12:55,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6810, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7257, PETRI_PLACES=254, PETRI_TRANSITIONS=419} [2024-06-28 00:12:55,543 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 213 predicate places. [2024-06-28 00:12:55,543 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 419 transitions, 7257 flow [2024-06-28 00:12:55,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:55,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:55,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:55,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 00:12:55,543 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:12:55,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:55,544 INFO L85 PathProgramCache]: Analyzing trace with hash 2097205300, now seen corresponding path program 1 times [2024-06-28 00:12:55,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:55,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668334588] [2024-06-28 00:12:55,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:55,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:57,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:57,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:57,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668334588] [2024-06-28 00:12:57,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668334588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:57,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:57,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:12:57,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503089150] [2024-06-28 00:12:57,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:57,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:12:57,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:57,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:12:57,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:12:57,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:12:57,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 419 transitions, 7257 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:57,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:57,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:12:57,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:58,909 INFO L124 PetriNetUnfolderBase]: 3592/5517 cut-off events. [2024-06-28 00:12:58,909 INFO L125 PetriNetUnfolderBase]: For 417120/417132 co-relation queries the response was YES. [2024-06-28 00:12:58,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45792 conditions, 5517 events. 3592/5517 cut-off events. For 417120/417132 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 30445 event pairs, 829 based on Foata normal form. 14/5531 useless extension candidates. Maximal degree in co-relation 45671. Up to 4378 conditions per place. [2024-06-28 00:12:58,974 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 313 selfloop transitions, 167 changer transitions 0/483 dead transitions. [2024-06-28 00:12:58,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 483 transitions, 9105 flow [2024-06-28 00:12:58,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:12:58,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:12:58,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-28 00:12:58,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.496875 [2024-06-28 00:12:58,975 INFO L175 Difference]: Start difference. First operand has 254 places, 419 transitions, 7257 flow. Second operand 8 states and 159 transitions. [2024-06-28 00:12:58,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 483 transitions, 9105 flow [2024-06-28 00:13:00,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 483 transitions, 8682 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 00:13:00,238 INFO L231 Difference]: Finished difference. Result has 259 places, 442 transitions, 7746 flow [2024-06-28 00:13:00,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6834, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7746, PETRI_PLACES=259, PETRI_TRANSITIONS=442} [2024-06-28 00:13:00,239 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 218 predicate places. [2024-06-28 00:13:00,239 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 442 transitions, 7746 flow [2024-06-28 00:13:00,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:00,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:00,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:00,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 00:13:00,239 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:13:00,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:00,240 INFO L85 PathProgramCache]: Analyzing trace with hash -448874798, now seen corresponding path program 1 times [2024-06-28 00:13:00,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:00,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911644161] [2024-06-28 00:13:00,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:00,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:02,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:02,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:02,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911644161] [2024-06-28 00:13:02,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911644161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:02,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:02,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:13:02,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514063193] [2024-06-28 00:13:02,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:02,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:13:02,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:02,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:13:02,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:13:02,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:13:02,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 442 transitions, 7746 flow. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:02,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:02,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:13:02,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:03,757 INFO L124 PetriNetUnfolderBase]: 3654/5599 cut-off events. [2024-06-28 00:13:03,757 INFO L125 PetriNetUnfolderBase]: For 440504/440516 co-relation queries the response was YES. [2024-06-28 00:13:03,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47766 conditions, 5599 events. 3654/5599 cut-off events. For 440504/440516 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 30743 event pairs, 713 based on Foata normal form. 18/5617 useless extension candidates. Maximal degree in co-relation 47640. Up to 5190 conditions per place. [2024-06-28 00:13:03,824 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 402 selfloop transitions, 95 changer transitions 0/500 dead transitions. [2024-06-28 00:13:03,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 500 transitions, 9683 flow [2024-06-28 00:13:03,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:13:03,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:13:03,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 00:13:03,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41 [2024-06-28 00:13:03,825 INFO L175 Difference]: Start difference. First operand has 259 places, 442 transitions, 7746 flow. Second operand 10 states and 164 transitions. [2024-06-28 00:13:03,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 500 transitions, 9683 flow [2024-06-28 00:13:04,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 500 transitions, 9603 flow, removed 39 selfloop flow, removed 1 redundant places. [2024-06-28 00:13:04,937 INFO L231 Difference]: Finished difference. Result has 271 places, 472 transitions, 8462 flow [2024-06-28 00:13:04,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7676, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8462, PETRI_PLACES=271, PETRI_TRANSITIONS=472} [2024-06-28 00:13:04,938 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 230 predicate places. [2024-06-28 00:13:04,938 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 472 transitions, 8462 flow [2024-06-28 00:13:04,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:04,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:04,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:04,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 00:13:04,938 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:13:04,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:04,938 INFO L85 PathProgramCache]: Analyzing trace with hash -920764999, now seen corresponding path program 2 times [2024-06-28 00:13:04,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:04,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588827863] [2024-06-28 00:13:04,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:04,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:07,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:07,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:07,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588827863] [2024-06-28 00:13:07,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588827863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:07,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:07,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:13:07,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770420414] [2024-06-28 00:13:07,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:07,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:13:07,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:07,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:13:07,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:13:07,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:13:07,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 472 transitions, 8462 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:07,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:07,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:13:07,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:08,759 INFO L124 PetriNetUnfolderBase]: 3695/5685 cut-off events. [2024-06-28 00:13:08,759 INFO L125 PetriNetUnfolderBase]: For 502754/502760 co-relation queries the response was YES. [2024-06-28 00:13:08,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49376 conditions, 5685 events. 3695/5685 cut-off events. For 502754/502760 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 31663 event pairs, 954 based on Foata normal form. 16/5701 useless extension candidates. Maximal degree in co-relation 49244. Up to 4714 conditions per place. [2024-06-28 00:13:08,819 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 294 selfloop transitions, 210 changer transitions 0/507 dead transitions. [2024-06-28 00:13:08,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 507 transitions, 9692 flow [2024-06-28 00:13:08,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:13:08,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:13:08,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 00:13:08,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-28 00:13:08,820 INFO L175 Difference]: Start difference. First operand has 271 places, 472 transitions, 8462 flow. Second operand 8 states and 148 transitions. [2024-06-28 00:13:08,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 507 transitions, 9692 flow [2024-06-28 00:13:10,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 507 transitions, 9321 flow, removed 176 selfloop flow, removed 2 redundant places. [2024-06-28 00:13:10,395 INFO L231 Difference]: Finished difference. Result has 277 places, 473 transitions, 8581 flow [2024-06-28 00:13:10,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8091, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8581, PETRI_PLACES=277, PETRI_TRANSITIONS=473} [2024-06-28 00:13:10,395 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 236 predicate places. [2024-06-28 00:13:10,395 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 473 transitions, 8581 flow [2024-06-28 00:13:10,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:10,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:10,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:10,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 00:13:10,396 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:13:10,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:10,396 INFO L85 PathProgramCache]: Analyzing trace with hash 57145397, now seen corresponding path program 3 times [2024-06-28 00:13:10,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:10,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897231735] [2024-06-28 00:13:10,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:10,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:12,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:12,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:12,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897231735] [2024-06-28 00:13:12,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897231735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:12,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:12,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:13:12,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566915694] [2024-06-28 00:13:12,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:12,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:13:12,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:12,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:13:12,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:13:13,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:13:13,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 473 transitions, 8581 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:13,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:13,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:13:13,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:14,517 INFO L124 PetriNetUnfolderBase]: 3736/5741 cut-off events. [2024-06-28 00:13:14,517 INFO L125 PetriNetUnfolderBase]: For 520159/520169 co-relation queries the response was YES. [2024-06-28 00:13:14,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50549 conditions, 5741 events. 3736/5741 cut-off events. For 520159/520169 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 31830 event pairs, 679 based on Foata normal form. 20/5761 useless extension candidates. Maximal degree in co-relation 50415. Up to 4655 conditions per place. [2024-06-28 00:13:14,591 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 305 selfloop transitions, 201 changer transitions 0/509 dead transitions. [2024-06-28 00:13:14,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 509 transitions, 9791 flow [2024-06-28 00:13:14,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:13:14,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:13:14,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 00:13:14,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 00:13:14,593 INFO L175 Difference]: Start difference. First operand has 277 places, 473 transitions, 8581 flow. Second operand 9 states and 160 transitions. [2024-06-28 00:13:14,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 509 transitions, 9791 flow [2024-06-28 00:13:15,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 509 transitions, 9335 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 00:13:15,978 INFO L231 Difference]: Finished difference. Result has 280 places, 474 transitions, 8593 flow [2024-06-28 00:13:15,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8125, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8593, PETRI_PLACES=280, PETRI_TRANSITIONS=474} [2024-06-28 00:13:15,979 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 239 predicate places. [2024-06-28 00:13:15,979 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 474 transitions, 8593 flow [2024-06-28 00:13:15,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:15,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:15,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:15,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 00:13:15,980 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:13:15,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:15,980 INFO L85 PathProgramCache]: Analyzing trace with hash -87208558, now seen corresponding path program 2 times [2024-06-28 00:13:15,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:15,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630115644] [2024-06-28 00:13:15,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:15,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:18,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:18,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:18,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630115644] [2024-06-28 00:13:18,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630115644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:18,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:18,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:13:18,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226774451] [2024-06-28 00:13:18,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:18,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:13:18,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:18,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:13:18,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:13:18,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:13:18,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 474 transitions, 8593 flow. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:18,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:18,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:13:18,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:19,834 INFO L124 PetriNetUnfolderBase]: 3845/5893 cut-off events. [2024-06-28 00:13:19,835 INFO L125 PetriNetUnfolderBase]: For 518307/518319 co-relation queries the response was YES. [2024-06-28 00:13:19,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51653 conditions, 5893 events. 3845/5893 cut-off events. For 518307/518319 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 32825 event pairs, 720 based on Foata normal form. 18/5911 useless extension candidates. Maximal degree in co-relation 51518. Up to 5402 conditions per place. [2024-06-28 00:13:19,913 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 423 selfloop transitions, 103 changer transitions 0/529 dead transitions. [2024-06-28 00:13:19,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 529 transitions, 10395 flow [2024-06-28 00:13:19,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:13:19,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:13:19,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 00:13:19,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-06-28 00:13:19,914 INFO L175 Difference]: Start difference. First operand has 280 places, 474 transitions, 8593 flow. Second operand 7 states and 122 transitions. [2024-06-28 00:13:19,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 529 transitions, 10395 flow [2024-06-28 00:13:21,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 529 transitions, 9949 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 00:13:21,640 INFO L231 Difference]: Finished difference. Result has 281 places, 500 transitions, 8707 flow [2024-06-28 00:13:21,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8147, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8707, PETRI_PLACES=281, PETRI_TRANSITIONS=500} [2024-06-28 00:13:21,641 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 240 predicate places. [2024-06-28 00:13:21,641 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 500 transitions, 8707 flow [2024-06-28 00:13:21,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:21,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:21,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:21,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 00:13:21,641 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:13:21,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:21,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1125418448, now seen corresponding path program 3 times [2024-06-28 00:13:21,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:21,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918451551] [2024-06-28 00:13:21,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:21,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:23,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:23,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:23,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918451551] [2024-06-28 00:13:23,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918451551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:23,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:23,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:13:23,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890646443] [2024-06-28 00:13:23,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:23,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:13:23,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:23,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:13:23,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:13:23,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:13:23,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 500 transitions, 8707 flow. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:23,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:23,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:13:23,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:24,483 INFO L124 PetriNetUnfolderBase]: 3834/5886 cut-off events. [2024-06-28 00:13:24,484 INFO L125 PetriNetUnfolderBase]: For 519088/519088 co-relation queries the response was YES. [2024-06-28 00:13:24,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51059 conditions, 5886 events. 3834/5886 cut-off events. For 519088/519088 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 32870 event pairs, 1545 based on Foata normal form. 3/5889 useless extension candidates. Maximal degree in co-relation 50922. Up to 5773 conditions per place. [2024-06-28 00:13:24,557 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 481 selfloop transitions, 39 changer transitions 0/523 dead transitions. [2024-06-28 00:13:24,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 523 transitions, 10036 flow [2024-06-28 00:13:24,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:13:24,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:13:24,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 122 transitions. [2024-06-28 00:13:24,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-28 00:13:24,558 INFO L175 Difference]: Start difference. First operand has 281 places, 500 transitions, 8707 flow. Second operand 8 states and 122 transitions. [2024-06-28 00:13:24,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 523 transitions, 10036 flow [2024-06-28 00:13:26,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 523 transitions, 9905 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-28 00:13:26,389 INFO L231 Difference]: Finished difference. Result has 287 places, 505 transitions, 8761 flow [2024-06-28 00:13:26,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8553, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8761, PETRI_PLACES=287, PETRI_TRANSITIONS=505} [2024-06-28 00:13:26,390 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 246 predicate places. [2024-06-28 00:13:26,390 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 505 transitions, 8761 flow [2024-06-28 00:13:26,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:26,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:26,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:26,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 00:13:26,390 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:13:26,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:26,391 INFO L85 PathProgramCache]: Analyzing trace with hash -558504784, now seen corresponding path program 4 times [2024-06-28 00:13:26,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:26,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830760641] [2024-06-28 00:13:26,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:26,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:27,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:27,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:27,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830760641] [2024-06-28 00:13:27,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830760641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:27,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:27,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:13:27,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758776077] [2024-06-28 00:13:27,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:27,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:13:27,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:27,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:13:27,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:13:27,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:13:27,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 505 transitions, 8761 flow. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:27,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:27,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:13:27,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:29,207 INFO L124 PetriNetUnfolderBase]: 3859/5920 cut-off events. [2024-06-28 00:13:29,207 INFO L125 PetriNetUnfolderBase]: For 537091/537091 co-relation queries the response was YES. [2024-06-28 00:13:29,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51368 conditions, 5920 events. 3859/5920 cut-off events. For 537091/537091 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 33067 event pairs, 1545 based on Foata normal form. 5/5925 useless extension candidates. Maximal degree in co-relation 51229. Up to 5814 conditions per place. [2024-06-28 00:13:29,279 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 489 selfloop transitions, 44 changer transitions 0/536 dead transitions. [2024-06-28 00:13:29,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 536 transitions, 10096 flow [2024-06-28 00:13:29,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:13:29,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:13:29,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-28 00:13:29,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-28 00:13:29,280 INFO L175 Difference]: Start difference. First operand has 287 places, 505 transitions, 8761 flow. Second operand 11 states and 150 transitions. [2024-06-28 00:13:29,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 536 transitions, 10096 flow [2024-06-28 00:13:30,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 536 transitions, 10032 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 00:13:30,991 INFO L231 Difference]: Finished difference. Result has 294 places, 517 transitions, 9016 flow [2024-06-28 00:13:30,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8704, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9016, PETRI_PLACES=294, PETRI_TRANSITIONS=517} [2024-06-28 00:13:30,992 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 253 predicate places. [2024-06-28 00:13:30,992 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 517 transitions, 9016 flow [2024-06-28 00:13:30,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:30,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:30,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:30,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 00:13:30,992 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:13:30,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:30,993 INFO L85 PathProgramCache]: Analyzing trace with hash 866049733, now seen corresponding path program 4 times [2024-06-28 00:13:30,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:30,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795015571] [2024-06-28 00:13:30,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:30,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:32,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:32,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:32,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795015571] [2024-06-28 00:13:32,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795015571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:32,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:32,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:13:32,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521047567] [2024-06-28 00:13:32,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:32,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:13:32,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:32,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:13:32,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:13:32,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:13:32,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 517 transitions, 9016 flow. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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) [2024-06-28 00:13:32,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:32,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:13:32,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:34,059 INFO L124 PetriNetUnfolderBase]: 3900/5993 cut-off events. [2024-06-28 00:13:34,059 INFO L125 PetriNetUnfolderBase]: For 570723/570725 co-relation queries the response was YES. [2024-06-28 00:13:34,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52461 conditions, 5993 events. 3900/5993 cut-off events. For 570723/570725 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 33560 event pairs, 1532 based on Foata normal form. 12/6005 useless extension candidates. Maximal degree in co-relation 52322. Up to 5782 conditions per place. [2024-06-28 00:13:34,138 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 523 selfloop transitions, 20 changer transitions 0/546 dead transitions. [2024-06-28 00:13:34,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 546 transitions, 10256 flow [2024-06-28 00:13:34,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:13:34,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:13:34,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-06-28 00:13:34,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 00:13:34,139 INFO L175 Difference]: Start difference. First operand has 294 places, 517 transitions, 9016 flow. Second operand 9 states and 135 transitions. [2024-06-28 00:13:34,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 546 transitions, 10256 flow [2024-06-28 00:13:35,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 546 transitions, 10101 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-28 00:13:35,580 INFO L231 Difference]: Finished difference. Result has 297 places, 518 transitions, 8967 flow [2024-06-28 00:13:35,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8861, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8967, PETRI_PLACES=297, PETRI_TRANSITIONS=518} [2024-06-28 00:13:35,581 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 256 predicate places. [2024-06-28 00:13:35,581 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 518 transitions, 8967 flow [2024-06-28 00:13:35,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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) [2024-06-28 00:13:35,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:35,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:35,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 00:13:35,582 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:13:35,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:35,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1443639461, now seen corresponding path program 5 times [2024-06-28 00:13:35,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:35,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160436186] [2024-06-28 00:13:35,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:35,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:37,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:37,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:37,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160436186] [2024-06-28 00:13:37,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160436186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:37,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:37,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:13:37,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028073153] [2024-06-28 00:13:37,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:37,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:13:37,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:37,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:13:37,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:13:37,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:13:37,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 518 transitions, 8967 flow. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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) [2024-06-28 00:13:37,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:37,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:13:37,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:38,795 INFO L124 PetriNetUnfolderBase]: 3941/6073 cut-off events. [2024-06-28 00:13:38,795 INFO L125 PetriNetUnfolderBase]: For 591619/591621 co-relation queries the response was YES. [2024-06-28 00:13:38,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53156 conditions, 6073 events. 3941/6073 cut-off events. For 591619/591621 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 34382 event pairs, 1551 based on Foata normal form. 12/6085 useless extension candidates. Maximal degree in co-relation 53016. Up to 5577 conditions per place. [2024-06-28 00:13:38,868 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 439 selfloop transitions, 104 changer transitions 0/546 dead transitions. [2024-06-28 00:13:38,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 546 transitions, 10205 flow [2024-06-28 00:13:38,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:13:38,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:13:38,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 00:13:38,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-28 00:13:38,870 INFO L175 Difference]: Start difference. First operand has 297 places, 518 transitions, 8967 flow. Second operand 8 states and 134 transitions. [2024-06-28 00:13:38,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 546 transitions, 10205 flow [2024-06-28 00:13:40,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 546 transitions, 10106 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-28 00:13:40,244 INFO L231 Difference]: Finished difference. Result has 297 places, 519 transitions, 9144 flow [2024-06-28 00:13:40,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8868, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9144, PETRI_PLACES=297, PETRI_TRANSITIONS=519} [2024-06-28 00:13:40,245 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 256 predicate places. [2024-06-28 00:13:40,245 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 519 transitions, 9144 flow [2024-06-28 00:13:40,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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) [2024-06-28 00:13:40,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:40,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:40,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 00:13:40,245 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:13:40,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:40,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1221994421, now seen corresponding path program 6 times [2024-06-28 00:13:40,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:40,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957834402] [2024-06-28 00:13:40,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:40,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:42,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:42,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:42,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957834402] [2024-06-28 00:13:42,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957834402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:42,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:42,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:13:42,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955444827] [2024-06-28 00:13:42,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:42,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:13:42,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:42,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:13:42,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:13:42,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:13:42,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 519 transitions, 9144 flow. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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) [2024-06-28 00:13:42,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:42,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:13:42,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:43,729 INFO L124 PetriNetUnfolderBase]: 3962/6103 cut-off events. [2024-06-28 00:13:43,729 INFO L125 PetriNetUnfolderBase]: For 574410/574412 co-relation queries the response was YES. [2024-06-28 00:13:43,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52394 conditions, 6103 events. 3962/6103 cut-off events. For 574410/574412 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 34494 event pairs, 1491 based on Foata normal form. 12/6115 useless extension candidates. Maximal degree in co-relation 52254. Up to 4977 conditions per place. [2024-06-28 00:13:43,810 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 369 selfloop transitions, 174 changer transitions 0/546 dead transitions. [2024-06-28 00:13:43,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 546 transitions, 10204 flow [2024-06-28 00:13:43,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:13:43,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:13:43,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-28 00:13:43,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-28 00:13:43,811 INFO L175 Difference]: Start difference. First operand has 297 places, 519 transitions, 9144 flow. Second operand 9 states and 140 transitions. [2024-06-28 00:13:43,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 546 transitions, 10204 flow [2024-06-28 00:13:45,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 546 transitions, 9946 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 00:13:45,761 INFO L231 Difference]: Finished difference. Result has 299 places, 519 transitions, 9127 flow [2024-06-28 00:13:45,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8758, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9127, PETRI_PLACES=299, PETRI_TRANSITIONS=519} [2024-06-28 00:13:45,762 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 258 predicate places. [2024-06-28 00:13:45,762 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 519 transitions, 9127 flow [2024-06-28 00:13:45,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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) [2024-06-28 00:13:45,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:45,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:45,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 00:13:45,763 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:13:45,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:45,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1363873512, now seen corresponding path program 5 times [2024-06-28 00:13:45,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:45,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638030435] [2024-06-28 00:13:45,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:45,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:46,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:46,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:46,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638030435] [2024-06-28 00:13:46,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638030435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:46,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:46,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:13:46,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155427499] [2024-06-28 00:13:46,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:46,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:13:46,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:46,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:13:46,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:13:47,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:13:47,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 519 transitions, 9127 flow. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:47,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:47,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:13:47,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:48,592 INFO L124 PetriNetUnfolderBase]: 3953/6090 cut-off events. [2024-06-28 00:13:48,592 INFO L125 PetriNetUnfolderBase]: For 557066/557070 co-relation queries the response was YES. [2024-06-28 00:13:48,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52352 conditions, 6090 events. 3953/6090 cut-off events. For 557066/557070 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 34472 event pairs, 1582 based on Foata normal form. 9/6099 useless extension candidates. Maximal degree in co-relation 52211. Up to 5983 conditions per place. [2024-06-28 00:13:48,660 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 489 selfloop transitions, 41 changer transitions 0/533 dead transitions. [2024-06-28 00:13:48,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 533 transitions, 10286 flow [2024-06-28 00:13:48,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:13:48,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:13:48,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2024-06-28 00:13:48,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-28 00:13:48,661 INFO L175 Difference]: Start difference. First operand has 299 places, 519 transitions, 9127 flow. Second operand 8 states and 114 transitions. [2024-06-28 00:13:48,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 533 transitions, 10286 flow [2024-06-28 00:13:50,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 533 transitions, 9755 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-28 00:13:50,320 INFO L231 Difference]: Finished difference. Result has 299 places, 520 transitions, 8743 flow [2024-06-28 00:13:50,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8575, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8743, PETRI_PLACES=299, PETRI_TRANSITIONS=520} [2024-06-28 00:13:50,320 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 258 predicate places. [2024-06-28 00:13:50,320 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 520 transitions, 8743 flow [2024-06-28 00:13:50,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:50,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:50,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:50,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 00:13:50,321 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:13:50,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:50,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1358159592, now seen corresponding path program 6 times [2024-06-28 00:13:50,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:50,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704119282] [2024-06-28 00:13:50,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:50,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:50,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:51,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:51,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:51,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704119282] [2024-06-28 00:13:51,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704119282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:51,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:51,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:13:51,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038616106] [2024-06-28 00:13:51,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:51,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:13:51,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:51,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:13:51,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:13:51,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:13:51,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 520 transitions, 8743 flow. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:51,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:51,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:13:51,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:53,079 INFO L124 PetriNetUnfolderBase]: 3940/6071 cut-off events. [2024-06-28 00:13:53,079 INFO L125 PetriNetUnfolderBase]: For 536151/536155 co-relation queries the response was YES. [2024-06-28 00:13:53,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50930 conditions, 6071 events. 3940/6071 cut-off events. For 536151/536155 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 34361 event pairs, 1580 based on Foata normal form. 6/6077 useless extension candidates. Maximal degree in co-relation 50789. Up to 5978 conditions per place. [2024-06-28 00:13:53,160 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 506 selfloop transitions, 29 changer transitions 0/538 dead transitions. [2024-06-28 00:13:53,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 538 transitions, 9949 flow [2024-06-28 00:13:53,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:13:53,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:13:53,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2024-06-28 00:13:53,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-28 00:13:53,161 INFO L175 Difference]: Start difference. First operand has 299 places, 520 transitions, 8743 flow. Second operand 8 states and 111 transitions. [2024-06-28 00:13:53,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 538 transitions, 9949 flow [2024-06-28 00:13:55,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 538 transitions, 9782 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-28 00:13:55,154 INFO L231 Difference]: Finished difference. Result has 302 places, 528 transitions, 8763 flow [2024-06-28 00:13:55,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8581, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8763, PETRI_PLACES=302, PETRI_TRANSITIONS=528} [2024-06-28 00:13:55,154 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 261 predicate places. [2024-06-28 00:13:55,154 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 528 transitions, 8763 flow [2024-06-28 00:13:55,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:55,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:55,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:55,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 00:13:55,155 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:13:55,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:55,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1371500008, now seen corresponding path program 1 times [2024-06-28 00:13:55,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:55,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223943784] [2024-06-28 00:13:55,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:55,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:57,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:57,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:57,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223943784] [2024-06-28 00:13:57,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223943784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:57,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:57,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:13:57,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176220470] [2024-06-28 00:13:57,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:57,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:13:57,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:57,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:13:57,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:13:57,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:13:57,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 528 transitions, 8763 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:57,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:57,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:13:57,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:58,836 INFO L124 PetriNetUnfolderBase]: 3947/6080 cut-off events. [2024-06-28 00:13:58,836 INFO L125 PetriNetUnfolderBase]: For 542324/542324 co-relation queries the response was YES. [2024-06-28 00:13:58,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51047 conditions, 6080 events. 3947/6080 cut-off events. For 542324/542324 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 34403 event pairs, 1572 based on Foata normal form. 1/6081 useless extension candidates. Maximal degree in co-relation 50904. Up to 6013 conditions per place. [2024-06-28 00:13:58,908 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 520 selfloop transitions, 22 changer transitions 0/545 dead transitions. [2024-06-28 00:13:58,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 545 transitions, 9993 flow [2024-06-28 00:13:58,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:13:58,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:13:58,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 101 transitions. [2024-06-28 00:13:58,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3607142857142857 [2024-06-28 00:13:58,909 INFO L175 Difference]: Start difference. First operand has 302 places, 528 transitions, 8763 flow. Second operand 7 states and 101 transitions. [2024-06-28 00:13:58,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 545 transitions, 9993 flow [2024-06-28 00:14:00,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 545 transitions, 9938 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-28 00:14:00,613 INFO L231 Difference]: Finished difference. Result has 306 places, 535 transitions, 8890 flow [2024-06-28 00:14:00,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8708, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8890, PETRI_PLACES=306, PETRI_TRANSITIONS=535} [2024-06-28 00:14:00,614 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 265 predicate places. [2024-06-28 00:14:00,614 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 535 transitions, 8890 flow [2024-06-28 00:14:00,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:00,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:00,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:00,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 00:14:00,614 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:00,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:00,615 INFO L85 PathProgramCache]: Analyzing trace with hash -562215763, now seen corresponding path program 1 times [2024-06-28 00:14:00,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:00,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378227170] [2024-06-28 00:14:00,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:00,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:02,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:02,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:02,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378227170] [2024-06-28 00:14:02,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378227170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:02,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:02,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:14:02,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069281078] [2024-06-28 00:14:02,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:02,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:14:02,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:02,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:14:02,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:14:02,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:14:02,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 535 transitions, 8890 flow. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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) [2024-06-28 00:14:02,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:02,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:14:02,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:04,463 INFO L124 PetriNetUnfolderBase]: 3967/6108 cut-off events. [2024-06-28 00:14:04,464 INFO L125 PetriNetUnfolderBase]: For 563964/563964 co-relation queries the response was YES. [2024-06-28 00:14:04,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51685 conditions, 6108 events. 3967/6108 cut-off events. For 563964/563964 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 34570 event pairs, 1579 based on Foata normal form. 4/6112 useless extension candidates. Maximal degree in co-relation 51540. Up to 5905 conditions per place. [2024-06-28 00:14:04,544 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 507 selfloop transitions, 53 changer transitions 0/563 dead transitions. [2024-06-28 00:14:04,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 563 transitions, 10368 flow [2024-06-28 00:14:04,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:14:04,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:14:04,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 00:14:04,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 00:14:04,546 INFO L175 Difference]: Start difference. First operand has 306 places, 535 transitions, 8890 flow. Second operand 8 states and 130 transitions. [2024-06-28 00:14:04,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 563 transitions, 10368 flow [2024-06-28 00:14:06,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 563 transitions, 10269 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-28 00:14:06,310 INFO L231 Difference]: Finished difference. Result has 309 places, 541 transitions, 9035 flow [2024-06-28 00:14:06,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8791, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9035, PETRI_PLACES=309, PETRI_TRANSITIONS=541} [2024-06-28 00:14:06,311 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 268 predicate places. [2024-06-28 00:14:06,311 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 541 transitions, 9035 flow [2024-06-28 00:14:06,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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) [2024-06-28 00:14:06,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:06,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:06,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 00:14:06,311 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:06,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:06,312 INFO L85 PathProgramCache]: Analyzing trace with hash -73210269, now seen corresponding path program 2 times [2024-06-28 00:14:06,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:06,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696565098] [2024-06-28 00:14:06,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:06,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:08,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:08,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:08,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696565098] [2024-06-28 00:14:08,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696565098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:08,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:08,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:14:08,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329479832] [2024-06-28 00:14:08,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:08,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:14:08,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:08,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:14:08,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:14:08,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:14:08,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 541 transitions, 9035 flow. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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) [2024-06-28 00:14:08,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:08,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:14:08,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:10,160 INFO L124 PetriNetUnfolderBase]: 3987/6136 cut-off events. [2024-06-28 00:14:10,160 INFO L125 PetriNetUnfolderBase]: For 581282/581282 co-relation queries the response was YES. [2024-06-28 00:14:10,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52484 conditions, 6136 events. 3987/6136 cut-off events. For 581282/581282 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 34780 event pairs, 1579 based on Foata normal form. 4/6140 useless extension candidates. Maximal degree in co-relation 52337. Up to 6009 conditions per place. [2024-06-28 00:14:10,243 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 520 selfloop transitions, 39 changer transitions 0/562 dead transitions. [2024-06-28 00:14:10,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 562 transitions, 10290 flow [2024-06-28 00:14:10,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:14:10,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:14:10,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-28 00:14:10,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36944444444444446 [2024-06-28 00:14:10,244 INFO L175 Difference]: Start difference. First operand has 309 places, 541 transitions, 9035 flow. Second operand 9 states and 133 transitions. [2024-06-28 00:14:10,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 562 transitions, 10290 flow [2024-06-28 00:14:12,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 562 transitions, 10182 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 00:14:12,491 INFO L231 Difference]: Finished difference. Result has 313 places, 544 transitions, 9086 flow [2024-06-28 00:14:12,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8930, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9086, PETRI_PLACES=313, PETRI_TRANSITIONS=544} [2024-06-28 00:14:12,491 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 272 predicate places. [2024-06-28 00:14:12,492 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 544 transitions, 9086 flow [2024-06-28 00:14:12,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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) [2024-06-28 00:14:12,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:12,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:12,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 00:14:12,492 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:12,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:12,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1217499155, now seen corresponding path program 3 times [2024-06-28 00:14:12,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:12,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27273932] [2024-06-28 00:14:12,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:12,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:14,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:14,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:14,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27273932] [2024-06-28 00:14:14,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27273932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:14,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:14,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:14:14,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934480017] [2024-06-28 00:14:14,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:14,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:14:14,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:14,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:14:14,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:14:14,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:14:14,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 544 transitions, 9086 flow. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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) [2024-06-28 00:14:14,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:14,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:14:14,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:16,376 INFO L124 PetriNetUnfolderBase]: 3975/6121 cut-off events. [2024-06-28 00:14:16,377 INFO L125 PetriNetUnfolderBase]: For 582439/582443 co-relation queries the response was YES. [2024-06-28 00:14:16,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52238 conditions, 6121 events. 3975/6121 cut-off events. For 582439/582443 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 34641 event pairs, 1578 based on Foata normal form. 8/6129 useless extension candidates. Maximal degree in co-relation 52090. Up to 5955 conditions per place. [2024-06-28 00:14:16,457 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 512 selfloop transitions, 47 changer transitions 0/562 dead transitions. [2024-06-28 00:14:16,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 562 transitions, 10272 flow [2024-06-28 00:14:16,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:14:16,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:14:16,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2024-06-28 00:14:16,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.355 [2024-06-28 00:14:16,459 INFO L175 Difference]: Start difference. First operand has 313 places, 544 transitions, 9086 flow. Second operand 10 states and 142 transitions. [2024-06-28 00:14:16,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 562 transitions, 10272 flow [2024-06-28 00:14:18,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 562 transitions, 10126 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-28 00:14:18,288 INFO L231 Difference]: Finished difference. Result has 316 places, 544 transitions, 9040 flow [2024-06-28 00:14:18,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8940, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9040, PETRI_PLACES=316, PETRI_TRANSITIONS=544} [2024-06-28 00:14:18,288 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 275 predicate places. [2024-06-28 00:14:18,288 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 544 transitions, 9040 flow [2024-06-28 00:14:18,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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) [2024-06-28 00:14:18,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:18,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:18,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 00:14:18,289 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:18,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:18,289 INFO L85 PathProgramCache]: Analyzing trace with hash 423892640, now seen corresponding path program 1 times [2024-06-28 00:14:18,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:18,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247024652] [2024-06-28 00:14:18,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:18,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:18,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:20,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:20,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:20,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247024652] [2024-06-28 00:14:20,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247024652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:20,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:20,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:14:20,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463365280] [2024-06-28 00:14:20,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:20,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:14:20,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:20,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:14:20,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:14:20,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:14:20,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 544 transitions, 9040 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:20,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:20,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:14:20,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:22,698 INFO L124 PetriNetUnfolderBase]: 4322/6643 cut-off events. [2024-06-28 00:14:22,698 INFO L125 PetriNetUnfolderBase]: For 656879/656889 co-relation queries the response was YES. [2024-06-28 00:14:22,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57025 conditions, 6643 events. 4322/6643 cut-off events. For 656879/656889 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 38323 event pairs, 1013 based on Foata normal form. 10/6653 useless extension candidates. Maximal degree in co-relation 56876. Up to 5592 conditions per place. [2024-06-28 00:14:22,786 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 477 selfloop transitions, 181 changer transitions 0/661 dead transitions. [2024-06-28 00:14:22,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 661 transitions, 12328 flow [2024-06-28 00:14:22,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:14:22,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:14:22,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-28 00:14:22,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45227272727272727 [2024-06-28 00:14:22,787 INFO L175 Difference]: Start difference. First operand has 316 places, 544 transitions, 9040 flow. Second operand 11 states and 199 transitions. [2024-06-28 00:14:22,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 661 transitions, 12328 flow [2024-06-28 00:14:24,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 661 transitions, 12176 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 00:14:24,990 INFO L231 Difference]: Finished difference. Result has 324 places, 599 transitions, 10356 flow [2024-06-28 00:14:24,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8888, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10356, PETRI_PLACES=324, PETRI_TRANSITIONS=599} [2024-06-28 00:14:24,991 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 283 predicate places. [2024-06-28 00:14:24,991 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 599 transitions, 10356 flow [2024-06-28 00:14:24,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:24,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:24,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:24,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 00:14:24,991 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:24,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:24,992 INFO L85 PathProgramCache]: Analyzing trace with hash -589228704, now seen corresponding path program 2 times [2024-06-28 00:14:24,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:24,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154847172] [2024-06-28 00:14:24,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:24,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:26,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:26,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:26,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154847172] [2024-06-28 00:14:26,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154847172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:26,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:26,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:14:26,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911537375] [2024-06-28 00:14:26,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:26,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:14:26,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:26,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:14:26,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:14:27,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:14:27,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 599 transitions, 10356 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:27,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:27,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:14:27,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:29,232 INFO L124 PetriNetUnfolderBase]: 4606/7094 cut-off events. [2024-06-28 00:14:29,232 INFO L125 PetriNetUnfolderBase]: For 763451/763467 co-relation queries the response was YES. [2024-06-28 00:14:29,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63595 conditions, 7094 events. 4606/7094 cut-off events. For 763451/763467 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 41459 event pairs, 803 based on Foata normal form. 28/7122 useless extension candidates. Maximal degree in co-relation 63439. Up to 5448 conditions per place. [2024-06-28 00:14:29,322 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 468 selfloop transitions, 211 changer transitions 0/682 dead transitions. [2024-06-28 00:14:29,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 682 transitions, 13051 flow [2024-06-28 00:14:29,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:14:29,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:14:29,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-28 00:14:29,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4825 [2024-06-28 00:14:29,323 INFO L175 Difference]: Start difference. First operand has 324 places, 599 transitions, 10356 flow. Second operand 10 states and 193 transitions. [2024-06-28 00:14:29,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 682 transitions, 13051 flow [2024-06-28 00:14:32,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 682 transitions, 12990 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-28 00:14:32,263 INFO L231 Difference]: Finished difference. Result has 335 places, 621 transitions, 11174 flow [2024-06-28 00:14:32,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10295, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11174, PETRI_PLACES=335, PETRI_TRANSITIONS=621} [2024-06-28 00:14:32,264 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 294 predicate places. [2024-06-28 00:14:32,264 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 621 transitions, 11174 flow [2024-06-28 00:14:32,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:32,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:32,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:32,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 00:14:32,265 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:32,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:32,265 INFO L85 PathProgramCache]: Analyzing trace with hash 979118786, now seen corresponding path program 3 times [2024-06-28 00:14:32,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:32,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320797336] [2024-06-28 00:14:32,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:32,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:34,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:34,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:34,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320797336] [2024-06-28 00:14:34,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320797336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:34,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:34,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:14:34,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587181759] [2024-06-28 00:14:34,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:34,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:14:34,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:34,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:14:34,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:14:34,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:14:34,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 621 transitions, 11174 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:34,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:34,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:14:34,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:36,691 INFO L124 PetriNetUnfolderBase]: 4937/7605 cut-off events. [2024-06-28 00:14:36,691 INFO L125 PetriNetUnfolderBase]: For 856359/856381 co-relation queries the response was YES. [2024-06-28 00:14:36,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70579 conditions, 7605 events. 4937/7605 cut-off events. For 856359/856381 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 45244 event pairs, 1105 based on Foata normal form. 36/7641 useless extension candidates. Maximal degree in co-relation 70418. Up to 6322 conditions per place. [2024-06-28 00:14:36,791 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 495 selfloop transitions, 217 changer transitions 0/715 dead transitions. [2024-06-28 00:14:36,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 715 transitions, 14235 flow [2024-06-28 00:14:36,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:14:36,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:14:36,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-28 00:14:36,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4825 [2024-06-28 00:14:36,792 INFO L175 Difference]: Start difference. First operand has 335 places, 621 transitions, 11174 flow. Second operand 10 states and 193 transitions. [2024-06-28 00:14:36,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 715 transitions, 14235 flow [2024-06-28 00:14:40,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 715 transitions, 13875 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-28 00:14:40,027 INFO L231 Difference]: Finished difference. Result has 341 places, 656 transitions, 11990 flow [2024-06-28 00:14:40,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10848, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11990, PETRI_PLACES=341, PETRI_TRANSITIONS=656} [2024-06-28 00:14:40,028 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 300 predicate places. [2024-06-28 00:14:40,028 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 656 transitions, 11990 flow [2024-06-28 00:14:40,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:40,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:40,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:40,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 00:14:40,029 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:40,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:40,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1012634436, now seen corresponding path program 1 times [2024-06-28 00:14:40,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:40,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153990372] [2024-06-28 00:14:40,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:40,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:42,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:42,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:42,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153990372] [2024-06-28 00:14:42,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153990372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:42,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:42,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:14:42,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283900929] [2024-06-28 00:14:42,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:42,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:14:42,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:42,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:14:42,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:14:42,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:14:42,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 656 transitions, 11990 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:42,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:42,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:14:42,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:45,076 INFO L124 PetriNetUnfolderBase]: 5081/7804 cut-off events. [2024-06-28 00:14:45,077 INFO L125 PetriNetUnfolderBase]: For 887003/887033 co-relation queries the response was YES. [2024-06-28 00:14:45,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74722 conditions, 7804 events. 5081/7804 cut-off events. For 887003/887033 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 46464 event pairs, 1153 based on Foata normal form. 36/7840 useless extension candidates. Maximal degree in co-relation 74558. Up to 6181 conditions per place. [2024-06-28 00:14:45,193 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 443 selfloop transitions, 279 changer transitions 0/725 dead transitions. [2024-06-28 00:14:45,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 725 transitions, 14685 flow [2024-06-28 00:14:45,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:14:45,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:14:45,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-28 00:14:45,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4775 [2024-06-28 00:14:45,194 INFO L175 Difference]: Start difference. First operand has 341 places, 656 transitions, 11990 flow. Second operand 10 states and 191 transitions. [2024-06-28 00:14:45,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 725 transitions, 14685 flow [2024-06-28 00:14:49,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 725 transitions, 14345 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 00:14:49,029 INFO L231 Difference]: Finished difference. Result has 349 places, 678 transitions, 13057 flow [2024-06-28 00:14:49,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11650, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13057, PETRI_PLACES=349, PETRI_TRANSITIONS=678} [2024-06-28 00:14:49,030 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 308 predicate places. [2024-06-28 00:14:49,030 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 678 transitions, 13057 flow [2024-06-28 00:14:49,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:49,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:49,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:49,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 00:14:49,030 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:49,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:49,031 INFO L85 PathProgramCache]: Analyzing trace with hash 984333348, now seen corresponding path program 4 times [2024-06-28 00:14:49,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:49,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666063166] [2024-06-28 00:14:49,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:49,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:49,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:51,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:51,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:51,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666063166] [2024-06-28 00:14:51,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666063166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:51,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:51,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:14:51,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245487679] [2024-06-28 00:14:51,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:51,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:14:51,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:51,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:14:51,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:14:51,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:14:51,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 678 transitions, 13057 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:51,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:51,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:14:51,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:53,816 INFO L124 PetriNetUnfolderBase]: 5142/7896 cut-off events. [2024-06-28 00:14:53,816 INFO L125 PetriNetUnfolderBase]: For 927881/927919 co-relation queries the response was YES. [2024-06-28 00:14:53,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78613 conditions, 7896 events. 5142/7896 cut-off events. For 927881/927919 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 46985 event pairs, 1187 based on Foata normal form. 52/7948 useless extension candidates. Maximal degree in co-relation 78444. Up to 6887 conditions per place. [2024-06-28 00:14:53,952 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 544 selfloop transitions, 202 changer transitions 0/749 dead transitions. [2024-06-28 00:14:53,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 749 transitions, 15833 flow [2024-06-28 00:14:53,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:14:53,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:14:53,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-28 00:14:53,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2024-06-28 00:14:53,953 INFO L175 Difference]: Start difference. First operand has 349 places, 678 transitions, 13057 flow. Second operand 11 states and 196 transitions. [2024-06-28 00:14:53,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 749 transitions, 15833 flow [2024-06-28 00:14:57,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 749 transitions, 15674 flow, removed 66 selfloop flow, removed 2 redundant places. [2024-06-28 00:14:57,756 INFO L231 Difference]: Finished difference. Result has 361 places, 702 transitions, 13952 flow [2024-06-28 00:14:57,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12914, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13952, PETRI_PLACES=361, PETRI_TRANSITIONS=702} [2024-06-28 00:14:57,757 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 320 predicate places. [2024-06-28 00:14:57,757 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 702 transitions, 13952 flow [2024-06-28 00:14:57,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:57,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:57,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:57,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 00:14:57,757 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:57,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:57,757 INFO L85 PathProgramCache]: Analyzing trace with hash 588616830, now seen corresponding path program 5 times [2024-06-28 00:14:57,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:57,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584667365] [2024-06-28 00:14:57,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:57,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:59,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:59,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:59,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584667365] [2024-06-28 00:14:59,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584667365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:59,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:59,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:14:59,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514790809] [2024-06-28 00:14:59,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:59,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:14:59,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:59,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:14:59,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:15:00,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:15:00,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 702 transitions, 13952 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:00,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:00,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:15:00,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:02,649 INFO L124 PetriNetUnfolderBase]: 5320/8170 cut-off events. [2024-06-28 00:15:02,649 INFO L125 PetriNetUnfolderBase]: For 1056329/1056369 co-relation queries the response was YES. [2024-06-28 00:15:02,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82468 conditions, 8170 events. 5320/8170 cut-off events. For 1056329/1056369 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 48668 event pairs, 902 based on Foata normal form. 74/8244 useless extension candidates. Maximal degree in co-relation 82293. Up to 5458 conditions per place. [2024-06-28 00:15:02,779 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 450 selfloop transitions, 308 changer transitions 0/761 dead transitions. [2024-06-28 00:15:02,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 761 transitions, 16659 flow [2024-06-28 00:15:02,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:15:02,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:15:02,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-28 00:15:02,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5055555555555555 [2024-06-28 00:15:02,780 INFO L175 Difference]: Start difference. First operand has 361 places, 702 transitions, 13952 flow. Second operand 9 states and 182 transitions. [2024-06-28 00:15:02,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 761 transitions, 16659 flow [2024-06-28 00:15:07,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 761 transitions, 16349 flow, removed 56 selfloop flow, removed 4 redundant places. [2024-06-28 00:15:07,217 INFO L231 Difference]: Finished difference. Result has 366 places, 710 transitions, 14462 flow [2024-06-28 00:15:07,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13652, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14462, PETRI_PLACES=366, PETRI_TRANSITIONS=710} [2024-06-28 00:15:07,218 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 325 predicate places. [2024-06-28 00:15:07,218 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 710 transitions, 14462 flow [2024-06-28 00:15:07,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:07,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:07,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:07,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 00:15:07,218 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:07,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:07,219 INFO L85 PathProgramCache]: Analyzing trace with hash 588856150, now seen corresponding path program 2 times [2024-06-28 00:15:07,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:07,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924417434] [2024-06-28 00:15:07,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:07,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:09,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:09,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:09,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924417434] [2024-06-28 00:15:09,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924417434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:09,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:09,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:15:09,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136834470] [2024-06-28 00:15:09,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:09,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:15:09,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:09,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:15:09,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:15:09,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:15:09,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 710 transitions, 14462 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:09,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:09,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:15:09,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:12,498 INFO L124 PetriNetUnfolderBase]: 5402/8291 cut-off events. [2024-06-28 00:15:12,498 INFO L125 PetriNetUnfolderBase]: For 1010090/1010130 co-relation queries the response was YES. [2024-06-28 00:15:12,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85243 conditions, 8291 events. 5402/8291 cut-off events. For 1010090/1010130 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 49640 event pairs, 1227 based on Foata normal form. 48/8339 useless extension candidates. Maximal degree in co-relation 85066. Up to 6167 conditions per place. [2024-06-28 00:15:12,625 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 417 selfloop transitions, 350 changer transitions 0/770 dead transitions. [2024-06-28 00:15:12,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 770 transitions, 17226 flow [2024-06-28 00:15:12,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:15:12,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:15:12,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-28 00:15:12,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5055555555555555 [2024-06-28 00:15:12,626 INFO L175 Difference]: Start difference. First operand has 366 places, 710 transitions, 14462 flow. Second operand 9 states and 182 transitions. [2024-06-28 00:15:12,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 770 transitions, 17226 flow [2024-06-28 00:15:16,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 770 transitions, 16883 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-28 00:15:16,599 INFO L231 Difference]: Finished difference. Result has 371 places, 728 transitions, 15451 flow [2024-06-28 00:15:16,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14131, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15451, PETRI_PLACES=371, PETRI_TRANSITIONS=728} [2024-06-28 00:15:16,599 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 330 predicate places. [2024-06-28 00:15:16,599 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 728 transitions, 15451 flow [2024-06-28 00:15:16,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:16,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:16,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:16,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 00:15:16,600 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:16,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:16,600 INFO L85 PathProgramCache]: Analyzing trace with hash 593831392, now seen corresponding path program 6 times [2024-06-28 00:15:16,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:16,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363084380] [2024-06-28 00:15:16,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:16,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:18,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:18,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:18,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363084380] [2024-06-28 00:15:18,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363084380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:18,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:18,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:15:18,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611625612] [2024-06-28 00:15:18,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:18,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:15:18,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:18,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:15:18,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:15:18,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:15:18,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 728 transitions, 15451 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:18,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:18,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:15:18,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:21,459 INFO L124 PetriNetUnfolderBase]: 5464/8393 cut-off events. [2024-06-28 00:15:21,459 INFO L125 PetriNetUnfolderBase]: For 1065496/1065536 co-relation queries the response was YES. [2024-06-28 00:15:21,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86518 conditions, 8393 events. 5464/8393 cut-off events. For 1065496/1065536 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 50366 event pairs, 1261 based on Foata normal form. 82/8475 useless extension candidates. Maximal degree in co-relation 86339. Up to 6778 conditions per place. [2024-06-28 00:15:21,601 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 499 selfloop transitions, 271 changer transitions 0/773 dead transitions. [2024-06-28 00:15:21,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 773 transitions, 17822 flow [2024-06-28 00:15:21,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:15:21,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:15:21,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-28 00:15:21,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-28 00:15:21,602 INFO L175 Difference]: Start difference. First operand has 371 places, 728 transitions, 15451 flow. Second operand 9 states and 175 transitions. [2024-06-28 00:15:21,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 773 transitions, 17822 flow [2024-06-28 00:15:26,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 773 transitions, 17599 flow, removed 75 selfloop flow, removed 3 redundant places. [2024-06-28 00:15:26,178 INFO L231 Difference]: Finished difference. Result has 377 places, 731 transitions, 15857 flow [2024-06-28 00:15:26,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=15228, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=728, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15857, PETRI_PLACES=377, PETRI_TRANSITIONS=731} [2024-06-28 00:15:26,179 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 336 predicate places. [2024-06-28 00:15:26,179 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 731 transitions, 15857 flow [2024-06-28 00:15:26,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:26,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:26,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:26,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 00:15:26,179 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:26,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:26,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1627658710, now seen corresponding path program 3 times [2024-06-28 00:15:26,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:26,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541980775] [2024-06-28 00:15:26,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:26,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:29,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:29,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:29,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541980775] [2024-06-28 00:15:29,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541980775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:29,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:29,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:15:29,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296834305] [2024-06-28 00:15:29,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:29,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:15:29,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:29,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:15:29,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:15:29,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:15:29,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 731 transitions, 15857 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:29,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:29,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:15:29,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:32,393 INFO L124 PetriNetUnfolderBase]: 5686/8700 cut-off events. [2024-06-28 00:15:32,393 INFO L125 PetriNetUnfolderBase]: For 1025883/1025897 co-relation queries the response was YES. [2024-06-28 00:15:32,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91837 conditions, 8700 events. 5686/8700 cut-off events. For 1025883/1025897 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 52150 event pairs, 1459 based on Foata normal form. 24/8724 useless extension candidates. Maximal degree in co-relation 91656. Up to 8067 conditions per place. [2024-06-28 00:15:32,536 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 663 selfloop transitions, 161 changer transitions 0/827 dead transitions. [2024-06-28 00:15:32,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 827 transitions, 19431 flow [2024-06-28 00:15:32,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:15:32,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:15:32,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 198 transitions. [2024-06-28 00:15:32,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-28 00:15:32,537 INFO L175 Difference]: Start difference. First operand has 377 places, 731 transitions, 15857 flow. Second operand 12 states and 198 transitions. [2024-06-28 00:15:32,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 827 transitions, 19431 flow [2024-06-28 00:15:37,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 827 transitions, 18813 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-28 00:15:37,534 INFO L231 Difference]: Finished difference. Result has 388 places, 784 transitions, 16989 flow [2024-06-28 00:15:37,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=15277, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=731, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=582, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=16989, PETRI_PLACES=388, PETRI_TRANSITIONS=784} [2024-06-28 00:15:37,535 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 347 predicate places. [2024-06-28 00:15:37,536 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 784 transitions, 16989 flow [2024-06-28 00:15:37,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:37,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:37,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:37,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 00:15:37,536 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:37,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:37,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1063576706, now seen corresponding path program 1 times [2024-06-28 00:15:37,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:37,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203362227] [2024-06-28 00:15:37,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:37,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:39,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:39,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:39,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203362227] [2024-06-28 00:15:39,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203362227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:39,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:39,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:15:39,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264773375] [2024-06-28 00:15:39,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:39,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:15:39,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:39,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:15:39,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:15:39,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:15:39,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 784 transitions, 16989 flow. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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) [2024-06-28 00:15:39,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:39,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:15:39,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:42,629 INFO L124 PetriNetUnfolderBase]: 5802/8858 cut-off events. [2024-06-28 00:15:42,629 INFO L125 PetriNetUnfolderBase]: For 1028375/1028395 co-relation queries the response was YES. [2024-06-28 00:15:42,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94651 conditions, 8858 events. 5802/8858 cut-off events. For 1028375/1028395 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 53112 event pairs, 1423 based on Foata normal form. 20/8878 useless extension candidates. Maximal degree in co-relation 94463. Up to 8055 conditions per place. [2024-06-28 00:15:42,788 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 692 selfloop transitions, 158 changer transitions 0/853 dead transitions. [2024-06-28 00:15:42,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 853 transitions, 20322 flow [2024-06-28 00:15:42,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:15:42,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:15:42,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 00:15:42,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-06-28 00:15:42,790 INFO L175 Difference]: Start difference. First operand has 388 places, 784 transitions, 16989 flow. Second operand 9 states and 158 transitions. [2024-06-28 00:15:42,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 853 transitions, 20322 flow [2024-06-28 00:15:46,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 853 transitions, 20088 flow, removed 107 selfloop flow, removed 2 redundant places. [2024-06-28 00:15:46,944 INFO L231 Difference]: Finished difference. Result has 398 places, 811 transitions, 17957 flow [2024-06-28 00:15:46,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=16755, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=784, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=646, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17957, PETRI_PLACES=398, PETRI_TRANSITIONS=811} [2024-06-28 00:15:46,944 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 357 predicate places. [2024-06-28 00:15:46,945 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 811 transitions, 17957 flow [2024-06-28 00:15:46,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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) [2024-06-28 00:15:46,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:46,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:46,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 00:15:46,945 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:46,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:46,945 INFO L85 PathProgramCache]: Analyzing trace with hash 771231880, now seen corresponding path program 2 times [2024-06-28 00:15:46,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:46,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784906794] [2024-06-28 00:15:46,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:46,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:49,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:49,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:49,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784906794] [2024-06-28 00:15:49,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784906794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:49,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:49,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:15:49,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170113651] [2024-06-28 00:15:49,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:49,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:15:49,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:49,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:15:49,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:15:49,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:15:49,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 811 transitions, 17957 flow. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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) [2024-06-28 00:15:49,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:49,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:15:49,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:52,315 INFO L124 PetriNetUnfolderBase]: 5932/9042 cut-off events. [2024-06-28 00:15:52,316 INFO L125 PetriNetUnfolderBase]: For 1068830/1068852 co-relation queries the response was YES. [2024-06-28 00:15:52,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97197 conditions, 9042 events. 5932/9042 cut-off events. For 1068830/1068852 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 54277 event pairs, 1474 based on Foata normal form. 28/9070 useless extension candidates. Maximal degree in co-relation 97004. Up to 8431 conditions per place. [2024-06-28 00:15:52,482 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 745 selfloop transitions, 150 changer transitions 0/898 dead transitions. [2024-06-28 00:15:52,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 898 transitions, 21214 flow [2024-06-28 00:15:52,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:15:52,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:15:52,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 190 transitions. [2024-06-28 00:15:52,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-28 00:15:52,483 INFO L175 Difference]: Start difference. First operand has 398 places, 811 transitions, 17957 flow. Second operand 12 states and 190 transitions. [2024-06-28 00:15:52,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 898 transitions, 21214 flow [2024-06-28 00:15:57,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 898 transitions, 20937 flow, removed 56 selfloop flow, removed 4 redundant places. [2024-06-28 00:15:57,240 INFO L231 Difference]: Finished difference. Result has 412 places, 856 transitions, 19022 flow [2024-06-28 00:15:57,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=17713, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=811, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=678, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=19022, PETRI_PLACES=412, PETRI_TRANSITIONS=856} [2024-06-28 00:15:57,241 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 371 predicate places. [2024-06-28 00:15:57,241 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 856 transitions, 19022 flow [2024-06-28 00:15:57,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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) [2024-06-28 00:15:57,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:57,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:57,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 00:15:57,242 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:57,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:57,242 INFO L85 PathProgramCache]: Analyzing trace with hash -651153986, now seen corresponding path program 3 times [2024-06-28 00:15:57,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:57,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628066571] [2024-06-28 00:15:57,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:57,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:59,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:59,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:59,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628066571] [2024-06-28 00:15:59,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628066571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:59,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:59,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:15:59,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241823550] [2024-06-28 00:15:59,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:59,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:15:59,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:59,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:15:59,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:15:59,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:15:59,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 856 transitions, 19022 flow. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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) [2024-06-28 00:15:59,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:59,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:15:59,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:03,258 INFO L124 PetriNetUnfolderBase]: 6152/9348 cut-off events. [2024-06-28 00:16:03,259 INFO L125 PetriNetUnfolderBase]: For 1210206/1210228 co-relation queries the response was YES. [2024-06-28 00:16:03,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103176 conditions, 9348 events. 6152/9348 cut-off events. For 1210206/1210228 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 56092 event pairs, 1422 based on Foata normal form. 34/9382 useless extension candidates. Maximal degree in co-relation 102976. Up to 8505 conditions per place. [2024-06-28 00:16:03,419 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 755 selfloop transitions, 186 changer transitions 0/944 dead transitions. [2024-06-28 00:16:03,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 944 transitions, 23085 flow [2024-06-28 00:16:03,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:16:03,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:16:03,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 190 transitions. [2024-06-28 00:16:03,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-28 00:16:03,420 INFO L175 Difference]: Start difference. First operand has 412 places, 856 transitions, 19022 flow. Second operand 12 states and 190 transitions. [2024-06-28 00:16:03,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 944 transitions, 23085 flow [2024-06-28 00:16:08,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 944 transitions, 22885 flow, removed 90 selfloop flow, removed 2 redundant places. [2024-06-28 00:16:08,418 INFO L231 Difference]: Finished difference. Result has 423 places, 893 transitions, 20472 flow [2024-06-28 00:16:08,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=18822, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=856, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=678, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=20472, PETRI_PLACES=423, PETRI_TRANSITIONS=893} [2024-06-28 00:16:08,419 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 382 predicate places. [2024-06-28 00:16:08,419 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 893 transitions, 20472 flow [2024-06-28 00:16:08,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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) [2024-06-28 00:16:08,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:08,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:08,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 00:16:08,419 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:08,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:08,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1674975590, now seen corresponding path program 4 times [2024-06-28 00:16:08,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:08,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843855295] [2024-06-28 00:16:08,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:08,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:11,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:11,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:11,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843855295] [2024-06-28 00:16:11,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843855295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:11,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:11,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:16:11,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960389535] [2024-06-28 00:16:11,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:11,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:16:11,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:11,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:16:11,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:16:11,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:16:11,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 893 transitions, 20472 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:11,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:11,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:16:11,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:15,093 INFO L124 PetriNetUnfolderBase]: 6262/9501 cut-off events. [2024-06-28 00:16:15,093 INFO L125 PetriNetUnfolderBase]: For 1206367/1206379 co-relation queries the response was YES. [2024-06-28 00:16:15,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105979 conditions, 9501 events. 6262/9501 cut-off events. For 1206367/1206379 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 57101 event pairs, 1437 based on Foata normal form. 16/9517 useless extension candidates. Maximal degree in co-relation 105776. Up to 8704 conditions per place. [2024-06-28 00:16:15,257 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 716 selfloop transitions, 239 changer transitions 0/958 dead transitions. [2024-06-28 00:16:15,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 958 transitions, 23571 flow [2024-06-28 00:16:15,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:16:15,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:16:15,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 00:16:15,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 00:16:15,258 INFO L175 Difference]: Start difference. First operand has 423 places, 893 transitions, 20472 flow. Second operand 9 states and 162 transitions. [2024-06-28 00:16:15,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 958 transitions, 23571 flow [2024-06-28 00:16:20,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 958 transitions, 23050 flow, removed 175 selfloop flow, removed 7 redundant places. [2024-06-28 00:16:20,602 INFO L231 Difference]: Finished difference. Result has 426 places, 925 transitions, 21237 flow [2024-06-28 00:16:20,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=19963, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=893, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=672, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=21237, PETRI_PLACES=426, PETRI_TRANSITIONS=925} [2024-06-28 00:16:20,603 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 385 predicate places. [2024-06-28 00:16:20,603 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 925 transitions, 21237 flow [2024-06-28 00:16:20,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:20,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:20,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:20,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 00:16:20,603 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:20,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:20,604 INFO L85 PathProgramCache]: Analyzing trace with hash -651276808, now seen corresponding path program 5 times [2024-06-28 00:16:20,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:20,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297562964] [2024-06-28 00:16:20,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:20,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:23,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:23,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:23,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297562964] [2024-06-28 00:16:23,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297562964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:23,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:23,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:16:23,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122326253] [2024-06-28 00:16:23,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:23,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:16:23,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:23,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:16:23,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:16:23,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-28 00:16:23,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 925 transitions, 21237 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:23,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:23,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-28 00:16:23,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:27,808 INFO L124 PetriNetUnfolderBase]: 6666/10061 cut-off events. [2024-06-28 00:16:27,809 INFO L125 PetriNetUnfolderBase]: For 1427420/1427442 co-relation queries the response was YES. [2024-06-28 00:16:28,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116368 conditions, 10061 events. 6666/10061 cut-off events. For 1427420/1427442 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 60333 event pairs, 1454 based on Foata normal form. 32/10093 useless extension candidates. Maximal degree in co-relation 116162. Up to 8656 conditions per place. [2024-06-28 00:16:28,095 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 756 selfloop transitions, 294 changer transitions 0/1053 dead transitions. [2024-06-28 00:16:28,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 1053 transitions, 26766 flow [2024-06-28 00:16:28,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:16:28,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:16:28,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-28 00:16:28,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409090909090909 [2024-06-28 00:16:28,096 INFO L175 Difference]: Start difference. First operand has 426 places, 925 transitions, 21237 flow. Second operand 11 states and 194 transitions. [2024-06-28 00:16:28,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 1053 transitions, 26766 flow [2024-06-28 00:16:34,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 1053 transitions, 26245 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-28 00:16:34,108 INFO L231 Difference]: Finished difference. Result has 435 places, 994 transitions, 23716 flow [2024-06-28 00:16:34,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=20722, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=925, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23716, PETRI_PLACES=435, PETRI_TRANSITIONS=994} [2024-06-28 00:16:34,109 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 394 predicate places. [2024-06-28 00:16:34,109 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 994 transitions, 23716 flow [2024-06-28 00:16:34,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:34,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:34,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:34,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 00:16:34,109 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:34,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:34,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1676016032, now seen corresponding path program 1 times [2024-06-28 00:16:34,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:34,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249235895] [2024-06-28 00:16:34,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:34,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:36,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:36,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:36,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249235895] [2024-06-28 00:16:36,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249235895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:36,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:36,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:16:36,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638822152] [2024-06-28 00:16:36,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:36,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:16:36,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:36,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:16:36,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:16:36,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:16:36,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 994 transitions, 23716 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:36,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:36,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:16:36,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:41,103 INFO L124 PetriNetUnfolderBase]: 6674/10071 cut-off events. [2024-06-28 00:16:41,104 INFO L125 PetriNetUnfolderBase]: For 1428778/1428780 co-relation queries the response was YES. [2024-06-28 00:16:41,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118026 conditions, 10071 events. 6674/10071 cut-off events. For 1428778/1428780 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 60358 event pairs, 1899 based on Foata normal form. 4/10075 useless extension candidates. Maximal degree in co-relation 117816. Up to 9928 conditions per place. [2024-06-28 00:16:41,290 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 972 selfloop transitions, 49 changer transitions 0/1024 dead transitions. [2024-06-28 00:16:41,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 1024 transitions, 26072 flow [2024-06-28 00:16:41,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:16:41,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:16:41,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-28 00:16:41,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-28 00:16:41,291 INFO L175 Difference]: Start difference. First operand has 435 places, 994 transitions, 23716 flow. Second operand 9 states and 136 transitions. [2024-06-28 00:16:41,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 1024 transitions, 26072 flow [2024-06-28 00:16:47,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 1024 transitions, 25512 flow, removed 231 selfloop flow, removed 3 redundant places. [2024-06-28 00:16:47,392 INFO L231 Difference]: Finished difference. Result has 443 places, 1001 transitions, 23492 flow [2024-06-28 00:16:47,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=23168, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=994, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=948, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=23492, PETRI_PLACES=443, PETRI_TRANSITIONS=1001} [2024-06-28 00:16:47,393 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 402 predicate places. [2024-06-28 00:16:47,393 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 1001 transitions, 23492 flow [2024-06-28 00:16:47,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:47,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:47,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:47,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 00:16:47,393 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:47,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:47,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1257957844, now seen corresponding path program 4 times [2024-06-28 00:16:47,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:47,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874914652] [2024-06-28 00:16:47,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:47,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:47,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:49,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:49,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:49,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874914652] [2024-06-28 00:16:49,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874914652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:49,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:49,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:16:49,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217061658] [2024-06-28 00:16:49,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:49,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:16:49,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:49,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:16:49,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:16:49,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:16:49,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 1001 transitions, 23492 flow. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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) [2024-06-28 00:16:49,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:49,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:16:49,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:53,435 INFO L124 PetriNetUnfolderBase]: 6943/10470 cut-off events. [2024-06-28 00:16:53,435 INFO L125 PetriNetUnfolderBase]: For 1564880/1564882 co-relation queries the response was YES. [2024-06-28 00:16:53,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124288 conditions, 10470 events. 6943/10470 cut-off events. For 1564880/1564882 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 63113 event pairs, 2400 based on Foata normal form. 6/10476 useless extension candidates. Maximal degree in co-relation 124074. Up to 9363 conditions per place. [2024-06-28 00:16:53,619 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 885 selfloop transitions, 233 changer transitions 0/1121 dead transitions. [2024-06-28 00:16:53,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 1121 transitions, 28999 flow [2024-06-28 00:16:53,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:16:53,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:16:53,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-28 00:16:53,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-28 00:16:53,620 INFO L175 Difference]: Start difference. First operand has 443 places, 1001 transitions, 23492 flow. Second operand 9 states and 145 transitions. [2024-06-28 00:16:53,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 1121 transitions, 28999 flow [2024-06-28 00:17:00,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 1121 transitions, 28661 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-28 00:17:00,580 INFO L231 Difference]: Finished difference. Result has 450 places, 1079 transitions, 26403 flow [2024-06-28 00:17:00,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=23172, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1001, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=785, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26403, PETRI_PLACES=450, PETRI_TRANSITIONS=1079} [2024-06-28 00:17:00,581 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 409 predicate places. [2024-06-28 00:17:00,581 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 1079 transitions, 26403 flow [2024-06-28 00:17:00,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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) [2024-06-28 00:17:00,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:00,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:00,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 00:17:00,581 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:00,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:00,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1087260064, now seen corresponding path program 5 times [2024-06-28 00:17:00,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:00,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136822220] [2024-06-28 00:17:00,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:00,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:02,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:02,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:02,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136822220] [2024-06-28 00:17:02,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136822220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:02,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:02,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:17:02,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733390720] [2024-06-28 00:17:02,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:02,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:17:02,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:02,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:17:02,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:17:02,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:17:02,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 1079 transitions, 26403 flow. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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) [2024-06-28 00:17:02,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:02,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:17:02,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:07,066 INFO L124 PetriNetUnfolderBase]: 7259/10906 cut-off events. [2024-06-28 00:17:07,066 INFO L125 PetriNetUnfolderBase]: For 1720808/1720812 co-relation queries the response was YES. [2024-06-28 00:17:07,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131366 conditions, 10906 events. 7259/10906 cut-off events. For 1720808/1720812 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 65687 event pairs, 2433 based on Foata normal form. 34/10940 useless extension candidates. Maximal degree in co-relation 131148. Up to 10019 conditions per place. [2024-06-28 00:17:07,266 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 953 selfloop transitions, 234 changer transitions 0/1190 dead transitions. [2024-06-28 00:17:07,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 1190 transitions, 31466 flow [2024-06-28 00:17:07,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:17:07,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:17:07,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 00:17:07,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025 [2024-06-28 00:17:07,268 INFO L175 Difference]: Start difference. First operand has 450 places, 1079 transitions, 26403 flow. Second operand 10 states and 161 transitions. [2024-06-28 00:17:07,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 1190 transitions, 31466 flow [2024-06-28 00:17:14,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 1190 transitions, 31193 flow, removed 124 selfloop flow, removed 3 redundant places. [2024-06-28 00:17:14,790 INFO L231 Difference]: Finished difference. Result has 461 places, 1147 transitions, 28858 flow [2024-06-28 00:17:14,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=26144, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1079, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=849, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=28858, PETRI_PLACES=461, PETRI_TRANSITIONS=1147} [2024-06-28 00:17:14,791 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 420 predicate places. [2024-06-28 00:17:14,791 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 1147 transitions, 28858 flow [2024-06-28 00:17:14,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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) [2024-06-28 00:17:14,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:14,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:14,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 00:17:14,792 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:14,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:14,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1264391584, now seen corresponding path program 6 times [2024-06-28 00:17:14,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:14,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326071309] [2024-06-28 00:17:14,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:14,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:16,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:16,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:16,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326071309] [2024-06-28 00:17:16,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326071309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:16,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:16,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:17:16,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847484588] [2024-06-28 00:17:16,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:16,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:17:16,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:16,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:17:16,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:17:16,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-28 00:17:16,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 1147 transitions, 28858 flow. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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) [2024-06-28 00:17:16,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:16,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-28 00:17:16,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:21,365 INFO L124 PetriNetUnfolderBase]: 7431/11144 cut-off events. [2024-06-28 00:17:21,365 INFO L125 PetriNetUnfolderBase]: For 1708924/1708928 co-relation queries the response was YES. [2024-06-28 00:17:21,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137694 conditions, 11144 events. 7431/11144 cut-off events. For 1708924/1708928 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 67216 event pairs, 2460 based on Foata normal form. 10/11154 useless extension candidates. Maximal degree in co-relation 137470. Up to 10463 conditions per place. [2024-06-28 00:17:21,700 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 1082 selfloop transitions, 170 changer transitions 0/1255 dead transitions. [2024-06-28 00:17:21,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 1255 transitions, 34034 flow [2024-06-28 00:17:21,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:17:21,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:17:21,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-28 00:17:21,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3972222222222222 [2024-06-28 00:17:21,701 INFO L175 Difference]: Start difference. First operand has 461 places, 1147 transitions, 28858 flow. Second operand 9 states and 143 transitions. [2024-06-28 00:17:21,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 1255 transitions, 34034 flow