./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi008.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/rfi008.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/rfi008.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi008.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 00:02:36,598 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:02:36,735 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:02:36,742 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:02:36,742 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:02:36,808 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:02:36,809 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:02:36,810 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:02:36,811 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:02:36,815 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:02:36,815 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:02:36,815 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:02:36,816 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:02:36,818 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:02:36,818 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:02:36,818 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:02:36,819 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:02:36,819 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:02:36,819 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:02:36,820 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:02:36,820 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:02:36,820 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:02:36,821 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:02:36,821 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:02:36,821 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:02:36,822 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:02:36,822 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:02:36,822 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:02:36,823 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:02:36,823 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:02:36,825 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:02:36,825 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:02:36,825 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:02:36,825 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:02:36,826 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:02:36,826 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:02:36,826 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:02:36,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:02:36,827 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:02:36,827 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:02:36,827 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:02:36,828 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:02:36,828 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:02:36,828 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 00:02:37,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:02:37,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:02:37,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:02:37,427 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:02:37,444 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:02:37,446 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi008.oepc.i [2024-06-28 00:02:38,753 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:02:38,977 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:02:38,986 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi008.oepc.i [2024-06-28 00:02:39,004 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b5ff4399/3d0d766961c2473c85c7e401ea3b8e08/FLAGbfb7de979 [2024-06-28 00:02:39,021 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b5ff4399/3d0d766961c2473c85c7e401ea3b8e08 [2024-06-28 00:02:39,024 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:02:39,025 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:02:39,027 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi008.oepc.yml/witness.yml [2024-06-28 00:02:39,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:02:39,111 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:02:39,112 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:02:39,112 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:02:39,117 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:02:39,117 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:02:39" (1/2) ... [2024-06-28 00:02:39,119 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@109484e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:02:39, skipping insertion in model container [2024-06-28 00:02:39,119 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:02:39" (1/2) ... [2024-06-28 00:02:39,120 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5d33c199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:02:39, skipping insertion in model container [2024-06-28 00:02:39,122 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:02:39" (2/2) ... [2024-06-28 00:02:39,123 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@109484e4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:02:39, skipping insertion in model container [2024-06-28 00:02:39,123 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:02:39" (2/2) ... [2024-06-28 00:02:39,123 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:02:39,183 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:02:39,185 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] ! multithreaded || (((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EBX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )x$flush_delayed) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff1 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$read_delayed) + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$w_buff0 >= 0LL) && (long long )x + (long long )x$w_buff0 >= 0LL) && (long long )x$flush_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$mem_tmp + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd2 + (long long )x$w_buff0 >= 0LL) && (long long )x$read_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$w_buff0 + (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 + (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 + (long long )y >= 0LL) && (long long )weak$$choice0 + (long long )x$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )x$w_buff0 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-28 00:02:39,185 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] ! multithreaded || (((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EBX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )x$flush_delayed) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff1 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$read_delayed) + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$w_buff0 >= 0LL) && (long long )x + (long long )x$w_buff0 >= 0LL) && (long long )x$flush_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$mem_tmp + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd2 + (long long )x$w_buff0 >= 0LL) && (long long )x$read_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$w_buff0 + (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 + (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 + (long long )y >= 0LL) && (long long )weak$$choice0 + (long long )x$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )x$w_buff0 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-28 00:02:39,185 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:02:39,185 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-28 00:02:39,229 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:02:39,613 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:02:39,622 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:02:39,748 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:02:39,781 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:02:39,781 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:02:39 WrapperNode [2024-06-28 00:02:39,781 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:02:39,782 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:02:39,782 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:02:39,783 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:02:39,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:02:39" (1/1) ... [2024-06-28 00:02:39,805 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:02:39" (1/1) ... [2024-06-28 00:02:39,833 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 137 [2024-06-28 00:02:39,834 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:02:39,834 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:02:39,835 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:02:39,835 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:02:39,848 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:02:39" (1/1) ... [2024-06-28 00:02:39,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:02:39" (1/1) ... [2024-06-28 00:02:39,851 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:02:39" (1/1) ... [2024-06-28 00:02:39,875 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 00:02:39,878 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:02:39" (1/1) ... [2024-06-28 00:02:39,878 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:02:39" (1/1) ... [2024-06-28 00:02:39,884 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:02:39" (1/1) ... [2024-06-28 00:02:39,886 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:02:39" (1/1) ... [2024-06-28 00:02:39,888 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:02:39" (1/1) ... [2024-06-28 00:02:39,889 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:02:39" (1/1) ... [2024-06-28 00:02:39,892 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:02:39,893 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:02:39,893 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:02:39,894 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:02:39,894 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:02:39" (1/1) ... [2024-06-28 00:02:39,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:02:39,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:02:39,942 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 00:02:39,968 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 00:02:39,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 00:02:39,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:02:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 00:02:39,985 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 00:02:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 00:02:39,986 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 00:02:39,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:02:39,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 00:02:39,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:02:39,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:02:39,988 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 00:02:40,093 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:02:40,094 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:02:40,572 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:02:40,572 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:02:40,836 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:02:40,836 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 00:02:40,838 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:02:40 BoogieIcfgContainer [2024-06-28 00:02:40,838 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:02:40,840 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:02:40,841 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:02:40,844 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:02:40,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:02:39" (1/4) ... [2024-06-28 00:02:40,845 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf569af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:02:40, skipping insertion in model container [2024-06-28 00:02:40,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:02:39" (2/4) ... [2024-06-28 00:02:40,846 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf569af and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:02:40, skipping insertion in model container [2024-06-28 00:02:40,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:02:39" (3/4) ... [2024-06-28 00:02:40,849 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf569af and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:02:40, skipping insertion in model container [2024-06-28 00:02:40,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:02:40" (4/4) ... [2024-06-28 00:02:40,851 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi008.oepc.i [2024-06-28 00:02:40,869 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:02:40,870 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 00:02:40,870 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:02:40,925 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 00:02:40,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-28 00:02:41,014 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-28 00:02:41,014 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:02:41,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 00:02:41,017 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-28 00:02:41,021 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-28 00:02:41,039 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:02:41,050 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;@ca08782, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:02:41,050 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 00:02:41,056 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:02:41,057 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 00:02:41,057 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:02:41,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:41,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 00:02:41,059 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:41,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:41,071 INFO L85 PathProgramCache]: Analyzing trace with hash 368677949, now seen corresponding path program 1 times [2024-06-28 00:02:41,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:41,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748420674] [2024-06-28 00:02:41,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:41,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:42,484 INFO 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 00:02:42,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:42,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748420674] [2024-06-28 00:02:42,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748420674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:42,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:42,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:02:42,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158976951] [2024-06-28 00:02:42,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:42,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:02:42,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:42,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:02:42,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:02:42,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:02:42,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 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 00:02:42,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:42,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:02:42,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:42,732 INFO L124 PetriNetUnfolderBase]: 193/350 cut-off events. [2024-06-28 00:02:42,732 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-06-28 00:02:42,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 350 events. 193/350 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1270 event pairs, 119 based on Foata normal form. 1/343 useless extension candidates. Maximal degree in co-relation 705. Up to 341 conditions per place. [2024-06-28 00:02:42,738 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 22 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-28 00:02:42,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 117 flow [2024-06-28 00:02:42,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:02:42,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:02:42,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-06-28 00:02:42,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-06-28 00:02:42,749 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 54 transitions. [2024-06-28 00:02:42,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 117 flow [2024-06-28 00:02:42,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:02:42,753 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-28 00:02:42,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-28 00:02:42,758 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-28 00:02:42,758 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-28 00:02:42,759 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 00:02:42,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:42,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:42,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:02:42,760 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:42,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:42,760 INFO L85 PathProgramCache]: Analyzing trace with hash 2112218588, now seen corresponding path program 1 times [2024-06-28 00:02:42,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:42,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586660023] [2024-06-28 00:02:42,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:42,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:42,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:43,488 INFO 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 00:02:43,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:43,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586660023] [2024-06-28 00:02:43,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586660023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:43,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:43,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:02:43,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724822114] [2024-06-28 00:02:43,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:43,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:02:43,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:43,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:02:43,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:02:43,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:02:43,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 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 00:02:43,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:43,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:02:43,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:43,653 INFO L124 PetriNetUnfolderBase]: 190/345 cut-off events. [2024-06-28 00:02:43,653 INFO L125 PetriNetUnfolderBase]: For 68/71 co-relation queries the response was YES. [2024-06-28 00:02:43,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 345 events. 190/345 cut-off events. For 68/71 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1213 event pairs, 101 based on Foata normal form. 4/347 useless extension candidates. Maximal degree in co-relation 786. Up to 327 conditions per place. [2024-06-28 00:02:43,658 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 26 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-28 00:02:43,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 159 flow [2024-06-28 00:02:43,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:02:43,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:02:43,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-06-28 00:02:43,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5564516129032258 [2024-06-28 00:02:43,662 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 69 transitions. [2024-06-28 00:02:43,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 159 flow [2024-06-28 00:02:43,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 00:02:43,666 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-28 00:02:43,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-28 00:02:43,666 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-28 00:02:43,667 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-28 00:02:43,668 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 00:02:43,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:43,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:43,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:02:43,669 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:43,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:43,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1054267720, now seen corresponding path program 1 times [2024-06-28 00:02:43,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:43,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187608892] [2024-06-28 00:02:43,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:43,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:44,846 INFO 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 00:02:44,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:44,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187608892] [2024-06-28 00:02:44,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187608892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:44,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:44,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:02:44,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023061569] [2024-06-28 00:02:44,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:44,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:02:44,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:44,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:02:44,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:02:44,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:02:44,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 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 00:02:44,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:44,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:02:44,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:45,054 INFO L124 PetriNetUnfolderBase]: 187/340 cut-off events. [2024-06-28 00:02:45,054 INFO L125 PetriNetUnfolderBase]: For 199/205 co-relation queries the response was YES. [2024-06-28 00:02:45,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 340 events. 187/340 cut-off events. For 199/205 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1207 event pairs, 83 based on Foata normal form. 6/344 useless extension candidates. Maximal degree in co-relation 859. Up to 313 conditions per place. [2024-06-28 00:02:45,056 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 30 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2024-06-28 00:02:45,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 41 transitions, 207 flow [2024-06-28 00:02:45,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:02:45,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:02:45,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-06-28 00:02:45,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5419354838709678 [2024-06-28 00:02:45,060 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 84 transitions. [2024-06-28 00:02:45,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 41 transitions, 207 flow [2024-06-28 00:02:45,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 198 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 00:02:45,063 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 119 flow [2024-06-28 00:02:45,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-06-28 00:02:45,065 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-06-28 00:02:45,065 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 119 flow [2024-06-28 00:02:45,065 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 00:02:45,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:45,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:45,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:02:45,066 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:45,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:45,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1622026825, now seen corresponding path program 1 times [2024-06-28 00:02:45,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:45,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383163294] [2024-06-28 00:02:45,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:45,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:46,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:46,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:46,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383163294] [2024-06-28 00:02:46,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383163294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:46,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:46,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:02:46,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426074820] [2024-06-28 00:02:46,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:46,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:02:46,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:46,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:02:46,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:02:46,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:02:46,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 00:02:46,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:46,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:02:46,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:46,635 INFO L124 PetriNetUnfolderBase]: 213/383 cut-off events. [2024-06-28 00:02:46,636 INFO L125 PetriNetUnfolderBase]: For 384/384 co-relation queries the response was YES. [2024-06-28 00:02:46,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1074 conditions, 383 events. 213/383 cut-off events. For 384/384 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1384 event pairs, 49 based on Foata normal form. 6/387 useless extension candidates. Maximal degree in co-relation 1059. Up to 309 conditions per place. [2024-06-28 00:02:46,638 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 41 selfloop transitions, 12 changer transitions 0/56 dead transitions. [2024-06-28 00:02:46,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 56 transitions, 305 flow [2024-06-28 00:02:46,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:02:46,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:02:46,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2024-06-28 00:02:46,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2024-06-28 00:02:46,654 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 119 flow. Second operand 6 states and 102 transitions. [2024-06-28 00:02:46,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 56 transitions, 305 flow [2024-06-28 00:02:46,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 56 transitions, 290 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 00:02:46,656 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 164 flow [2024-06-28 00:02:46,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=164, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2024-06-28 00:02:46,657 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2024-06-28 00:02:46,657 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 164 flow [2024-06-28 00:02:46,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 00:02:46,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:46,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:46,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 00:02:46,658 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:46,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:46,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1405231846, now seen corresponding path program 1 times [2024-06-28 00:02:46,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:46,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502906703] [2024-06-28 00:02:46,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:46,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:48,869 INFO 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 00:02:48,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:48,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502906703] [2024-06-28 00:02:48,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502906703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:48,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:48,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:48,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137085924] [2024-06-28 00:02:48,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:48,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:48,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:48,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:48,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:48,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:02:48,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 164 flow. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 00:02:48,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:48,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:02:48,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:49,350 INFO L124 PetriNetUnfolderBase]: 213/383 cut-off events. [2024-06-28 00:02:49,350 INFO L125 PetriNetUnfolderBase]: For 573/573 co-relation queries the response was YES. [2024-06-28 00:02:49,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1191 conditions, 383 events. 213/383 cut-off events. For 573/573 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1368 event pairs, 29 based on Foata normal form. 6/387 useless extension candidates. Maximal degree in co-relation 1175. Up to 285 conditions per place. [2024-06-28 00:02:49,354 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 44 selfloop transitions, 17 changer transitions 0/64 dead transitions. [2024-06-28 00:02:49,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 64 transitions, 382 flow [2024-06-28 00:02:49,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:49,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:49,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 00:02:49,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5080645161290323 [2024-06-28 00:02:49,357 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 164 flow. Second operand 8 states and 126 transitions. [2024-06-28 00:02:49,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 64 transitions, 382 flow [2024-06-28 00:02:49,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 64 transitions, 364 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 00:02:49,364 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 217 flow [2024-06-28 00:02:49,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=217, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2024-06-28 00:02:49,369 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2024-06-28 00:02:49,369 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 217 flow [2024-06-28 00:02:49,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 00:02:49,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:49,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:49,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 00:02:49,373 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:49,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:49,373 INFO L85 PathProgramCache]: Analyzing trace with hash 2037384641, now seen corresponding path program 1 times [2024-06-28 00:02:49,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:49,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839759847] [2024-06-28 00:02:49,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:49,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:50,217 INFO 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 00:02:50,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:50,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839759847] [2024-06-28 00:02:50,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839759847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:50,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:50,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:02:50,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836455885] [2024-06-28 00:02:50,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:50,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:02:50,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:50,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:02:50,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:02:50,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:50,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 217 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:50,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:50,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:50,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:50,540 INFO L124 PetriNetUnfolderBase]: 207/374 cut-off events. [2024-06-28 00:02:50,541 INFO L125 PetriNetUnfolderBase]: For 775/775 co-relation queries the response was YES. [2024-06-28 00:02:50,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1294 conditions, 374 events. 207/374 cut-off events. For 775/775 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1304 event pairs, 45 based on Foata normal form. 3/375 useless extension candidates. Maximal degree in co-relation 1274. Up to 354 conditions per place. [2024-06-28 00:02:50,546 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 39 selfloop transitions, 10 changer transitions 0/51 dead transitions. [2024-06-28 00:02:50,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 51 transitions, 361 flow [2024-06-28 00:02:50,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:02:50,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:02:50,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2024-06-28 00:02:50,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:02:50,548 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 217 flow. Second operand 6 states and 72 transitions. [2024-06-28 00:02:50,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 51 transitions, 361 flow [2024-06-28 00:02:50,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 51 transitions, 318 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 00:02:50,551 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 245 flow [2024-06-28 00:02:50,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=245, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2024-06-28 00:02:50,551 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2024-06-28 00:02:50,552 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 245 flow [2024-06-28 00:02:50,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:50,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:50,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:50,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 00:02:50,552 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:50,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:50,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1502795314, now seen corresponding path program 1 times [2024-06-28 00:02:50,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:50,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801682728] [2024-06-28 00:02:50,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:50,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:51,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:51,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:51,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801682728] [2024-06-28 00:02:51,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801682728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:51,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:51,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:02:51,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459567687] [2024-06-28 00:02:51,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:51,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:02:51,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:51,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:02:51,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:02:51,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:51,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 245 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:51,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:51,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:51,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:51,779 INFO L124 PetriNetUnfolderBase]: 241/431 cut-off events. [2024-06-28 00:02:51,779 INFO L125 PetriNetUnfolderBase]: For 1010/1010 co-relation queries the response was YES. [2024-06-28 00:02:51,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1521 conditions, 431 events. 241/431 cut-off events. For 1010/1010 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1538 event pairs, 49 based on Foata normal form. 3/432 useless extension candidates. Maximal degree in co-relation 1496. Up to 380 conditions per place. [2024-06-28 00:02:51,782 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 49 selfloop transitions, 16 changer transitions 0/67 dead transitions. [2024-06-28 00:02:51,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 67 transitions, 472 flow [2024-06-28 00:02:51,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:02:51,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:02:51,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-28 00:02:51,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41013824884792627 [2024-06-28 00:02:51,784 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 245 flow. Second operand 7 states and 89 transitions. [2024-06-28 00:02:51,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 67 transitions, 472 flow [2024-06-28 00:02:51,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 67 transitions, 456 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 00:02:51,787 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 349 flow [2024-06-28 00:02:51,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=349, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2024-06-28 00:02:51,789 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2024-06-28 00:02:51,789 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 349 flow [2024-06-28 00:02:51,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:51,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:51,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:51,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:02:51,790 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:51,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:51,790 INFO L85 PathProgramCache]: Analyzing trace with hash -578692734, now seen corresponding path program 2 times [2024-06-28 00:02:51,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:51,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437097228] [2024-06-28 00:02:51,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:51,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:51,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:52,605 INFO 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 00:02:52,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:52,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437097228] [2024-06-28 00:02:52,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437097228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:52,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:52,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:02:52,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407824131] [2024-06-28 00:02:52,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:52,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:02:52,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:52,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:02:52,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:02:52,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:52,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 349 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:52,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:52,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:52,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:52,954 INFO L124 PetriNetUnfolderBase]: 260/462 cut-off events. [2024-06-28 00:02:52,955 INFO L125 PetriNetUnfolderBase]: For 1460/1460 co-relation queries the response was YES. [2024-06-28 00:02:52,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1825 conditions, 462 events. 260/462 cut-off events. For 1460/1460 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1676 event pairs, 47 based on Foata normal form. 3/463 useless extension candidates. Maximal degree in co-relation 1794. Up to 409 conditions per place. [2024-06-28 00:02:52,959 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 53 selfloop transitions, 18 changer transitions 0/73 dead transitions. [2024-06-28 00:02:52,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 73 transitions, 586 flow [2024-06-28 00:02:52,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:02:52,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:02:52,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-28 00:02:52,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4009216589861751 [2024-06-28 00:02:52,960 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 349 flow. Second operand 7 states and 87 transitions. [2024-06-28 00:02:52,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 73 transitions, 586 flow [2024-06-28 00:02:52,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 73 transitions, 577 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 00:02:52,967 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 462 flow [2024-06-28 00:02:52,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=462, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2024-06-28 00:02:52,969 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-28 00:02:52,969 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 462 flow [2024-06-28 00:02:52,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:52,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:52,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:52,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 00:02:52,970 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:52,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:52,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1974654658, now seen corresponding path program 3 times [2024-06-28 00:02:52,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:52,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524764261] [2024-06-28 00:02:52,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:52,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:53,764 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 00:02:53,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:53,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524764261] [2024-06-28 00:02:53,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524764261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:53,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:53,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:02:53,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869329736] [2024-06-28 00:02:53,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:53,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:02:53,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:53,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:02:53,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:02:53,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:53,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 462 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:53,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:53,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:53,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:54,059 INFO L124 PetriNetUnfolderBase]: 250/447 cut-off events. [2024-06-28 00:02:54,059 INFO L125 PetriNetUnfolderBase]: For 1855/1855 co-relation queries the response was YES. [2024-06-28 00:02:54,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1915 conditions, 447 events. 250/447 cut-off events. For 1855/1855 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1620 event pairs, 44 based on Foata normal form. 5/450 useless extension candidates. Maximal degree in co-relation 1878. Up to 414 conditions per place. [2024-06-28 00:02:54,063 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 53 selfloop transitions, 15 changer transitions 0/70 dead transitions. [2024-06-28 00:02:54,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 620 flow [2024-06-28 00:02:54,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:02:54,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:02:54,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-28 00:02:54,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778801843317972 [2024-06-28 00:02:54,065 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 462 flow. Second operand 7 states and 82 transitions. [2024-06-28 00:02:54,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 620 flow [2024-06-28 00:02:54,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 70 transitions, 589 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 00:02:54,072 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 469 flow [2024-06-28 00:02:54,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=469, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2024-06-28 00:02:54,073 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-06-28 00:02:54,073 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 469 flow [2024-06-28 00:02:54,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:54,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:54,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:54,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 00:02:54,074 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:54,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:54,074 INFO L85 PathProgramCache]: Analyzing trace with hash -199597024, now seen corresponding path program 4 times [2024-06-28 00:02:54,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:54,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553749811] [2024-06-28 00:02:54,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:54,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:54,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:54,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:54,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553749811] [2024-06-28 00:02:54,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553749811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:54,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:54,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:02:54,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451184568] [2024-06-28 00:02:54,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:54,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:02:54,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:54,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:02:54,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:02:54,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:54,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 469 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:54,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:54,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:54,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:55,193 INFO L124 PetriNetUnfolderBase]: 248/444 cut-off events. [2024-06-28 00:02:55,193 INFO L125 PetriNetUnfolderBase]: For 2049/2049 co-relation queries the response was YES. [2024-06-28 00:02:55,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1930 conditions, 444 events. 248/444 cut-off events. For 2049/2049 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1614 event pairs, 42 based on Foata normal form. 1/443 useless extension candidates. Maximal degree in co-relation 1891. Up to 397 conditions per place. [2024-06-28 00:02:55,196 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 58 selfloop transitions, 22 changer transitions 0/82 dead transitions. [2024-06-28 00:02:55,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 82 transitions, 727 flow [2024-06-28 00:02:55,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:55,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:55,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-28 00:02:55,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38306451612903225 [2024-06-28 00:02:55,198 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 469 flow. Second operand 8 states and 95 transitions. [2024-06-28 00:02:55,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 82 transitions, 727 flow [2024-06-28 00:02:55,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 82 transitions, 695 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 00:02:55,202 INFO L231 Difference]: Finished difference. Result has 74 places, 72 transitions, 588 flow [2024-06-28 00:02:55,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=588, PETRI_PLACES=74, PETRI_TRANSITIONS=72} [2024-06-28 00:02:55,204 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2024-06-28 00:02:55,204 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 72 transitions, 588 flow [2024-06-28 00:02:55,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:55,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:55,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:55,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 00:02:55,204 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:55,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:55,205 INFO L85 PathProgramCache]: Analyzing trace with hash -662753096, now seen corresponding path program 1 times [2024-06-28 00:02:55,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:55,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010877787] [2024-06-28 00:02:55,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:55,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:57,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:57,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:57,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010877787] [2024-06-28 00:02:57,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010877787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:57,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:57,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:57,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755394426] [2024-06-28 00:02:57,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:57,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:57,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:57,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:57,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:57,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:57,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 72 transitions, 588 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:02:57,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:57,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:57,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:57,658 INFO L124 PetriNetUnfolderBase]: 266/477 cut-off events. [2024-06-28 00:02:57,659 INFO L125 PetriNetUnfolderBase]: For 2632/2632 co-relation queries the response was YES. [2024-06-28 00:02:57,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2184 conditions, 477 events. 266/477 cut-off events. For 2632/2632 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1804 event pairs, 51 based on Foata normal form. 2/477 useless extension candidates. Maximal degree in co-relation 2142. Up to 438 conditions per place. [2024-06-28 00:02:57,663 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 74 selfloop transitions, 15 changer transitions 0/91 dead transitions. [2024-06-28 00:02:57,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 91 transitions, 855 flow [2024-06-28 00:02:57,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:57,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:57,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-28 00:02:57,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 00:02:57,665 INFO L175 Difference]: Start difference. First operand has 74 places, 72 transitions, 588 flow. Second operand 8 states and 93 transitions. [2024-06-28 00:02:57,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 91 transitions, 855 flow [2024-06-28 00:02:57,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 91 transitions, 822 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-28 00:02:57,672 INFO L231 Difference]: Finished difference. Result has 82 places, 79 transitions, 664 flow [2024-06-28 00:02:57,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=664, PETRI_PLACES=82, PETRI_TRANSITIONS=79} [2024-06-28 00:02:57,672 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2024-06-28 00:02:57,672 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 79 transitions, 664 flow [2024-06-28 00:02:57,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:02:57,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:57,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:57,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 00:02:57,673 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:57,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:57,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1039458718, now seen corresponding path program 1 times [2024-06-28 00:02:57,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:57,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594281329] [2024-06-28 00:02:57,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:57,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:59,484 INFO 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 00:02:59,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:59,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594281329] [2024-06-28 00:02:59,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594281329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:59,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:59,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:59,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836836965] [2024-06-28 00:02:59,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:59,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:59,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:59,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:59,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:59,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:59,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 79 transitions, 664 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:59,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:59,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:59,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:59,956 INFO L124 PetriNetUnfolderBase]: 285/508 cut-off events. [2024-06-28 00:02:59,956 INFO L125 PetriNetUnfolderBase]: For 3061/3061 co-relation queries the response was YES. [2024-06-28 00:02:59,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2390 conditions, 508 events. 285/508 cut-off events. For 3061/3061 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1943 event pairs, 57 based on Foata normal form. 1/507 useless extension candidates. Maximal degree in co-relation 2344. Up to 435 conditions per place. [2024-06-28 00:02:59,976 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 70 selfloop transitions, 28 changer transitions 0/100 dead transitions. [2024-06-28 00:02:59,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 100 transitions, 976 flow [2024-06-28 00:02:59,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:59,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:59,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 00:02:59,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-28 00:02:59,978 INFO L175 Difference]: Start difference. First operand has 82 places, 79 transitions, 664 flow. Second operand 9 states and 106 transitions. [2024-06-28 00:02:59,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 100 transitions, 976 flow [2024-06-28 00:02:59,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 100 transitions, 942 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 00:02:59,986 INFO L231 Difference]: Finished difference. Result has 90 places, 89 transitions, 781 flow [2024-06-28 00:02:59,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=781, PETRI_PLACES=90, PETRI_TRANSITIONS=89} [2024-06-28 00:02:59,986 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2024-06-28 00:02:59,986 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 89 transitions, 781 flow [2024-06-28 00:02:59,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:59,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:59,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:59,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 00:02:59,987 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:59,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:59,987 INFO L85 PathProgramCache]: Analyzing trace with hash -657984800, now seen corresponding path program 2 times [2024-06-28 00:02:59,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:59,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084104432] [2024-06-28 00:02:59,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:59,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:01,533 INFO 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 00:03:01,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:01,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084104432] [2024-06-28 00:03:01,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084104432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:01,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:01,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:01,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371597958] [2024-06-28 00:03:01,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:01,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:01,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:01,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:01,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:01,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:01,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 89 transitions, 781 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:01,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:01,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:01,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:01,965 INFO L124 PetriNetUnfolderBase]: 294/523 cut-off events. [2024-06-28 00:03:01,965 INFO L125 PetriNetUnfolderBase]: For 3900/3900 co-relation queries the response was YES. [2024-06-28 00:03:01,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2607 conditions, 523 events. 294/523 cut-off events. For 3900/3900 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2031 event pairs, 57 based on Foata normal form. 3/524 useless extension candidates. Maximal degree in co-relation 2558. Up to 448 conditions per place. [2024-06-28 00:03:01,970 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 73 selfloop transitions, 30 changer transitions 0/105 dead transitions. [2024-06-28 00:03:01,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 105 transitions, 1061 flow [2024-06-28 00:03:01,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:01,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:01,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-28 00:03:01,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 00:03:01,973 INFO L175 Difference]: Start difference. First operand has 90 places, 89 transitions, 781 flow. Second operand 8 states and 100 transitions. [2024-06-28 00:03:01,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 105 transitions, 1061 flow [2024-06-28 00:03:01,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 105 transitions, 1036 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-28 00:03:01,984 INFO L231 Difference]: Finished difference. Result has 96 places, 93 transitions, 860 flow [2024-06-28 00:03:01,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=860, PETRI_PLACES=96, PETRI_TRANSITIONS=93} [2024-06-28 00:03:01,985 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 66 predicate places. [2024-06-28 00:03:01,985 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 93 transitions, 860 flow [2024-06-28 00:03:01,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:01,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:01,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:01,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 00:03:01,986 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:01,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:01,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1034817088, now seen corresponding path program 3 times [2024-06-28 00:03:01,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:01,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112818474] [2024-06-28 00:03:01,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:01,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:03,439 INFO 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 00:03:03,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:03,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112818474] [2024-06-28 00:03:03,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112818474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:03,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:03,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:03,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274321160] [2024-06-28 00:03:03,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:03,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:03,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:03,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:03,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:03,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:03,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 93 transitions, 860 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:03,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:03,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:03,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:03,792 INFO L124 PetriNetUnfolderBase]: 300/533 cut-off events. [2024-06-28 00:03:03,793 INFO L125 PetriNetUnfolderBase]: For 4418/4418 co-relation queries the response was YES. [2024-06-28 00:03:03,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2784 conditions, 533 events. 300/533 cut-off events. For 4418/4418 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2085 event pairs, 59 based on Foata normal form. 1/532 useless extension candidates. Maximal degree in co-relation 2733. Up to 481 conditions per place. [2024-06-28 00:03:03,803 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 78 selfloop transitions, 26 changer transitions 0/106 dead transitions. [2024-06-28 00:03:03,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 106 transitions, 1130 flow [2024-06-28 00:03:03,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:03,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:03,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-28 00:03:03,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-28 00:03:03,804 INFO L175 Difference]: Start difference. First operand has 96 places, 93 transitions, 860 flow. Second operand 8 states and 97 transitions. [2024-06-28 00:03:03,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 106 transitions, 1130 flow [2024-06-28 00:03:03,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 106 transitions, 1066 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 00:03:03,816 INFO L231 Difference]: Finished difference. Result has 99 places, 98 transitions, 909 flow [2024-06-28 00:03:03,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=909, PETRI_PLACES=99, PETRI_TRANSITIONS=98} [2024-06-28 00:03:03,816 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2024-06-28 00:03:03,816 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 98 transitions, 909 flow [2024-06-28 00:03:03,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:03,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:03,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:03,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 00:03:03,817 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:03,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:03,817 INFO L85 PathProgramCache]: Analyzing trace with hash -751330638, now seen corresponding path program 4 times [2024-06-28 00:03:03,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:03,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618358102] [2024-06-28 00:03:03,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:03,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:05,089 INFO 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 00:03:05,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:05,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618358102] [2024-06-28 00:03:05,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618358102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:05,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:05,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:05,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070816610] [2024-06-28 00:03:05,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:05,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:05,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:05,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:05,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:05,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:05,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 98 transitions, 909 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:05,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:05,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:05,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:05,426 INFO L124 PetriNetUnfolderBase]: 304/540 cut-off events. [2024-06-28 00:03:05,426 INFO L125 PetriNetUnfolderBase]: For 5021/5021 co-relation queries the response was YES. [2024-06-28 00:03:05,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2853 conditions, 540 events. 304/540 cut-off events. For 5021/5021 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2110 event pairs, 56 based on Foata normal form. 3/541 useless extension candidates. Maximal degree in co-relation 2800. Up to 505 conditions per place. [2024-06-28 00:03:05,431 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 89 selfloop transitions, 19 changer transitions 0/110 dead transitions. [2024-06-28 00:03:05,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 110 transitions, 1187 flow [2024-06-28 00:03:05,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:05,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:05,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-28 00:03:05,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 00:03:05,432 INFO L175 Difference]: Start difference. First operand has 99 places, 98 transitions, 909 flow. Second operand 8 states and 92 transitions. [2024-06-28 00:03:05,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 110 transitions, 1187 flow [2024-06-28 00:03:05,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 110 transitions, 1134 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 00:03:05,442 INFO L231 Difference]: Finished difference. Result has 104 places, 103 transitions, 964 flow [2024-06-28 00:03:05,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=964, PETRI_PLACES=104, PETRI_TRANSITIONS=103} [2024-06-28 00:03:05,443 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2024-06-28 00:03:05,443 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 103 transitions, 964 flow [2024-06-28 00:03:05,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:05,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:05,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:05,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 00:03:05,443 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:05,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:05,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1076472256, now seen corresponding path program 5 times [2024-06-28 00:03:05,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:05,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507052570] [2024-06-28 00:03:05,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:05,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:06,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:06,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:06,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507052570] [2024-06-28 00:03:06,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507052570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:06,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:06,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:06,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368319135] [2024-06-28 00:03:06,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:06,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:06,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:06,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:06,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:06,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:06,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 103 transitions, 964 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:06,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:06,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:06,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:07,095 INFO L124 PetriNetUnfolderBase]: 307/545 cut-off events. [2024-06-28 00:03:07,095 INFO L125 PetriNetUnfolderBase]: For 5371/5371 co-relation queries the response was YES. [2024-06-28 00:03:07,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2961 conditions, 545 events. 307/545 cut-off events. For 5371/5371 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2135 event pairs, 56 based on Foata normal form. 1/544 useless extension candidates. Maximal degree in co-relation 2906. Up to 494 conditions per place. [2024-06-28 00:03:07,102 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 85 selfloop transitions, 27 changer transitions 0/114 dead transitions. [2024-06-28 00:03:07,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 114 transitions, 1268 flow [2024-06-28 00:03:07,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:07,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:07,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-28 00:03:07,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:03:07,103 INFO L175 Difference]: Start difference. First operand has 104 places, 103 transitions, 964 flow. Second operand 8 states and 96 transitions. [2024-06-28 00:03:07,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 114 transitions, 1268 flow [2024-06-28 00:03:07,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 114 transitions, 1208 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 00:03:07,119 INFO L231 Difference]: Finished difference. Result has 107 places, 106 transitions, 1009 flow [2024-06-28 00:03:07,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1009, PETRI_PLACES=107, PETRI_TRANSITIONS=106} [2024-06-28 00:03:07,119 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2024-06-28 00:03:07,119 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 106 transitions, 1009 flow [2024-06-28 00:03:07,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:07,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:07,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:07,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 00:03:07,120 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:07,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:07,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1076478766, now seen corresponding path program 6 times [2024-06-28 00:03:07,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:07,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272281014] [2024-06-28 00:03:07,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:07,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:08,462 INFO 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 00:03:08,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:08,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272281014] [2024-06-28 00:03:08,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272281014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:08,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:08,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:08,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091722688] [2024-06-28 00:03:08,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:08,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:08,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:08,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:08,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:08,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:08,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 106 transitions, 1009 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:08,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:08,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:08,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:08,785 INFO L124 PetriNetUnfolderBase]: 305/542 cut-off events. [2024-06-28 00:03:08,785 INFO L125 PetriNetUnfolderBase]: For 5736/5736 co-relation queries the response was YES. [2024-06-28 00:03:08,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2982 conditions, 542 events. 305/542 cut-off events. For 5736/5736 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2137 event pairs, 56 based on Foata normal form. 1/541 useless extension candidates. Maximal degree in co-relation 2926. Up to 507 conditions per place. [2024-06-28 00:03:08,790 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 91 selfloop transitions, 20 changer transitions 0/113 dead transitions. [2024-06-28 00:03:08,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 113 transitions, 1247 flow [2024-06-28 00:03:08,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:08,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:08,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-28 00:03:08,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 00:03:08,791 INFO L175 Difference]: Start difference. First operand has 107 places, 106 transitions, 1009 flow. Second operand 8 states and 92 transitions. [2024-06-28 00:03:08,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 113 transitions, 1247 flow [2024-06-28 00:03:08,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 113 transitions, 1175 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 00:03:08,806 INFO L231 Difference]: Finished difference. Result has 110 places, 106 transitions, 982 flow [2024-06-28 00:03:08,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=937, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=982, PETRI_PLACES=110, PETRI_TRANSITIONS=106} [2024-06-28 00:03:08,806 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-06-28 00:03:08,807 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 106 transitions, 982 flow [2024-06-28 00:03:08,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:08,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:08,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:08,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 00:03:08,807 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:08,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:08,808 INFO L85 PathProgramCache]: Analyzing trace with hash -776111444, now seen corresponding path program 2 times [2024-06-28 00:03:08,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:08,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461404492] [2024-06-28 00:03:08,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:08,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:09,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:09,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:09,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461404492] [2024-06-28 00:03:09,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461404492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:09,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:09,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:09,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473515756] [2024-06-28 00:03:09,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:09,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:09,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:09,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:09,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:09,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:09,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 106 transitions, 982 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:09,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:09,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:09,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:10,117 INFO L124 PetriNetUnfolderBase]: 326/579 cut-off events. [2024-06-28 00:03:10,117 INFO L125 PetriNetUnfolderBase]: For 6477/6477 co-relation queries the response was YES. [2024-06-28 00:03:10,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3162 conditions, 579 events. 326/579 cut-off events. For 6477/6477 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2341 event pairs, 43 based on Foata normal form. 2/579 useless extension candidates. Maximal degree in co-relation 3105. Up to 472 conditions per place. [2024-06-28 00:03:10,121 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 106 selfloop transitions, 35 changer transitions 0/143 dead transitions. [2024-06-28 00:03:10,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 143 transitions, 1493 flow [2024-06-28 00:03:10,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:03:10,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:03:10,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-28 00:03:10,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-28 00:03:10,123 INFO L175 Difference]: Start difference. First operand has 110 places, 106 transitions, 982 flow. Second operand 12 states and 139 transitions. [2024-06-28 00:03:10,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 143 transitions, 1493 flow [2024-06-28 00:03:10,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 143 transitions, 1433 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:10,144 INFO L231 Difference]: Finished difference. Result has 116 places, 119 transitions, 1134 flow [2024-06-28 00:03:10,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1134, PETRI_PLACES=116, PETRI_TRANSITIONS=119} [2024-06-28 00:03:10,145 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-06-28 00:03:10,145 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 119 transitions, 1134 flow [2024-06-28 00:03:10,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:10,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:10,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:10,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 00:03:10,146 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:10,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:10,146 INFO L85 PathProgramCache]: Analyzing trace with hash 447966290, now seen corresponding path program 3 times [2024-06-28 00:03:10,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:10,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248756614] [2024-06-28 00:03:10,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:10,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:10,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:10,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:10,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248756614] [2024-06-28 00:03:10,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248756614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:10,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:10,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:10,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208016146] [2024-06-28 00:03:10,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:10,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:10,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:10,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:10,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:10,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:10,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 119 transitions, 1134 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:10,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:10,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:10,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:11,351 INFO L124 PetriNetUnfolderBase]: 340/603 cut-off events. [2024-06-28 00:03:11,351 INFO L125 PetriNetUnfolderBase]: For 7246/7246 co-relation queries the response was YES. [2024-06-28 00:03:11,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3372 conditions, 603 events. 340/603 cut-off events. For 7246/7246 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2482 event pairs, 44 based on Foata normal form. 2/603 useless extension candidates. Maximal degree in co-relation 3314. Up to 511 conditions per place. [2024-06-28 00:03:11,357 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 110 selfloop transitions, 30 changer transitions 0/142 dead transitions. [2024-06-28 00:03:11,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 142 transitions, 1523 flow [2024-06-28 00:03:11,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:11,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:11,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-28 00:03:11,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-28 00:03:11,359 INFO L175 Difference]: Start difference. First operand has 116 places, 119 transitions, 1134 flow. Second operand 9 states and 110 transitions. [2024-06-28 00:03:11,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 142 transitions, 1523 flow [2024-06-28 00:03:11,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 142 transitions, 1395 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:11,375 INFO L231 Difference]: Finished difference. Result has 118 places, 124 transitions, 1128 flow [2024-06-28 00:03:11,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1128, PETRI_PLACES=118, PETRI_TRANSITIONS=124} [2024-06-28 00:03:11,376 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-28 00:03:11,376 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 124 transitions, 1128 flow [2024-06-28 00:03:11,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:11,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:11,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:11,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 00:03:11,377 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:11,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:11,377 INFO L85 PathProgramCache]: Analyzing trace with hash 476714636, now seen corresponding path program 7 times [2024-06-28 00:03:11,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:11,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698834895] [2024-06-28 00:03:11,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:11,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:12,065 INFO 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 00:03:12,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:12,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698834895] [2024-06-28 00:03:12,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698834895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:12,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:12,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:12,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109831733] [2024-06-28 00:03:12,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:12,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:12,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:12,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:12,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:12,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:12,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 124 transitions, 1128 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:12,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:12,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:12,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:12,518 INFO L124 PetriNetUnfolderBase]: 343/608 cut-off events. [2024-06-28 00:03:12,519 INFO L125 PetriNetUnfolderBase]: For 7546/7546 co-relation queries the response was YES. [2024-06-28 00:03:12,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3370 conditions, 608 events. 343/608 cut-off events. For 7546/7546 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2507 event pairs, 52 based on Foata normal form. 1/607 useless extension candidates. Maximal degree in co-relation 3314. Up to 498 conditions per place. [2024-06-28 00:03:12,524 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 93 selfloop transitions, 48 changer transitions 0/143 dead transitions. [2024-06-28 00:03:12,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 143 transitions, 1528 flow [2024-06-28 00:03:12,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:12,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:12,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-28 00:03:12,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-28 00:03:12,526 INFO L175 Difference]: Start difference. First operand has 118 places, 124 transitions, 1128 flow. Second operand 9 states and 110 transitions. [2024-06-28 00:03:12,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 143 transitions, 1528 flow [2024-06-28 00:03:12,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 143 transitions, 1473 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 00:03:12,544 INFO L231 Difference]: Finished difference. Result has 123 places, 129 transitions, 1255 flow [2024-06-28 00:03:12,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1255, PETRI_PLACES=123, PETRI_TRANSITIONS=129} [2024-06-28 00:03:12,544 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2024-06-28 00:03:12,544 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 129 transitions, 1255 flow [2024-06-28 00:03:12,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:12,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:12,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:12,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 00:03:12,545 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:12,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:12,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1510185384, now seen corresponding path program 4 times [2024-06-28 00:03:12,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:12,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018831535] [2024-06-28 00:03:12,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:12,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:14,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:14,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:14,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018831535] [2024-06-28 00:03:14,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018831535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:14,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:14,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:14,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916951668] [2024-06-28 00:03:14,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:14,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:14,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:14,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:14,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:14,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:14,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 129 transitions, 1255 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:14,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:14,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:14,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:14,866 INFO L124 PetriNetUnfolderBase]: 339/602 cut-off events. [2024-06-28 00:03:14,867 INFO L125 PetriNetUnfolderBase]: For 8254/8254 co-relation queries the response was YES. [2024-06-28 00:03:14,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3437 conditions, 602 events. 339/602 cut-off events. For 8254/8254 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2475 event pairs, 56 based on Foata normal form. 2/602 useless extension candidates. Maximal degree in co-relation 3379. Up to 556 conditions per place. [2024-06-28 00:03:14,872 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 127 selfloop transitions, 17 changer transitions 0/146 dead transitions. [2024-06-28 00:03:14,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 146 transitions, 1616 flow [2024-06-28 00:03:14,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:14,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:14,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-28 00:03:14,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-28 00:03:14,873 INFO L175 Difference]: Start difference. First operand has 123 places, 129 transitions, 1255 flow. Second operand 8 states and 98 transitions. [2024-06-28 00:03:14,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 146 transitions, 1616 flow [2024-06-28 00:03:14,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 146 transitions, 1542 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 00:03:14,892 INFO L231 Difference]: Finished difference. Result has 127 places, 131 transitions, 1260 flow [2024-06-28 00:03:14,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1260, PETRI_PLACES=127, PETRI_TRANSITIONS=131} [2024-06-28 00:03:14,893 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2024-06-28 00:03:14,893 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 131 transitions, 1260 flow [2024-06-28 00:03:14,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:14,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:14,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:14,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 00:03:14,894 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:14,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:14,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1510305540, now seen corresponding path program 8 times [2024-06-28 00:03:14,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:14,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489955970] [2024-06-28 00:03:14,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:14,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:14,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:16,176 INFO 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 00:03:16,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:16,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489955970] [2024-06-28 00:03:16,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489955970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:16,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:16,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:16,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627785806] [2024-06-28 00:03:16,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:16,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:16,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:16,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:16,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:16,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:16,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 131 transitions, 1260 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:16,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:16,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:16,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:16,531 INFO L124 PetriNetUnfolderBase]: 345/612 cut-off events. [2024-06-28 00:03:16,531 INFO L125 PetriNetUnfolderBase]: For 8678/8678 co-relation queries the response was YES. [2024-06-28 00:03:16,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3506 conditions, 612 events. 345/612 cut-off events. For 8678/8678 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2524 event pairs, 61 based on Foata normal form. 1/611 useless extension candidates. Maximal degree in co-relation 3446. Up to 536 conditions per place. [2024-06-28 00:03:16,551 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 113 selfloop transitions, 33 changer transitions 0/148 dead transitions. [2024-06-28 00:03:16,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 148 transitions, 1675 flow [2024-06-28 00:03:16,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:16,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:16,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-28 00:03:16,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4274193548387097 [2024-06-28 00:03:16,555 INFO L175 Difference]: Start difference. First operand has 127 places, 131 transitions, 1260 flow. Second operand 8 states and 106 transitions. [2024-06-28 00:03:16,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 148 transitions, 1675 flow [2024-06-28 00:03:16,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 148 transitions, 1619 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 00:03:16,582 INFO L231 Difference]: Finished difference. Result has 131 places, 135 transitions, 1327 flow [2024-06-28 00:03:16,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1327, PETRI_PLACES=131, PETRI_TRANSITIONS=135} [2024-06-28 00:03:16,583 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-28 00:03:16,583 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 135 transitions, 1327 flow [2024-06-28 00:03:16,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:16,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:16,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:16,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 00:03:16,584 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:16,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:16,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1892539726, now seen corresponding path program 9 times [2024-06-28 00:03:16,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:16,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726317694] [2024-06-28 00:03:16,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:16,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:17,903 INFO 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 00:03:17,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:17,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726317694] [2024-06-28 00:03:17,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726317694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:17,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:17,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:17,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254667815] [2024-06-28 00:03:17,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:17,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:17,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:17,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:17,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:17,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:17,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 135 transitions, 1327 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:17,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:17,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:17,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:18,365 INFO L124 PetriNetUnfolderBase]: 348/617 cut-off events. [2024-06-28 00:03:18,365 INFO L125 PetriNetUnfolderBase]: For 9447/9447 co-relation queries the response was YES. [2024-06-28 00:03:18,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3585 conditions, 617 events. 348/617 cut-off events. For 9447/9447 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2545 event pairs, 59 based on Foata normal form. 1/616 useless extension candidates. Maximal degree in co-relation 3523. Up to 558 conditions per place. [2024-06-28 00:03:18,370 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 117 selfloop transitions, 29 changer transitions 0/148 dead transitions. [2024-06-28 00:03:18,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 148 transitions, 1671 flow [2024-06-28 00:03:18,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:18,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:18,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 00:03:18,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-28 00:03:18,374 INFO L175 Difference]: Start difference. First operand has 131 places, 135 transitions, 1327 flow. Second operand 9 states and 106 transitions. [2024-06-28 00:03:18,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 148 transitions, 1671 flow [2024-06-28 00:03:18,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 148 transitions, 1580 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 00:03:18,395 INFO L231 Difference]: Finished difference. Result has 135 places, 137 transitions, 1327 flow [2024-06-28 00:03:18,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1242, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1327, PETRI_PLACES=135, PETRI_TRANSITIONS=137} [2024-06-28 00:03:18,396 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-28 00:03:18,396 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 137 transitions, 1327 flow [2024-06-28 00:03:18,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:18,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:18,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:18,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 00:03:18,397 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:18,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:18,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1685921780, now seen corresponding path program 1 times [2024-06-28 00:03:18,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:18,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276813533] [2024-06-28 00:03:18,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:18,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:19,678 INFO 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 00:03:19,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:19,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276813533] [2024-06-28 00:03:19,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276813533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:19,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:19,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:19,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205790677] [2024-06-28 00:03:19,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:19,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:19,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:19,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:19,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:19,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:19,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 137 transitions, 1327 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:19,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:19,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:19,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:20,190 INFO L124 PetriNetUnfolderBase]: 349/619 cut-off events. [2024-06-28 00:03:20,190 INFO L125 PetriNetUnfolderBase]: For 10153/10153 co-relation queries the response was YES. [2024-06-28 00:03:20,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3575 conditions, 619 events. 349/619 cut-off events. For 10153/10153 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2571 event pairs, 57 based on Foata normal form. 2/619 useless extension candidates. Maximal degree in co-relation 3512. Up to 536 conditions per place. [2024-06-28 00:03:20,195 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 118 selfloop transitions, 32 changer transitions 0/152 dead transitions. [2024-06-28 00:03:20,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 152 transitions, 1689 flow [2024-06-28 00:03:20,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:20,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:20,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-28 00:03:20,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-06-28 00:03:20,197 INFO L175 Difference]: Start difference. First operand has 135 places, 137 transitions, 1327 flow. Second operand 8 states and 102 transitions. [2024-06-28 00:03:20,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 152 transitions, 1689 flow [2024-06-28 00:03:20,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 152 transitions, 1628 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:20,225 INFO L231 Difference]: Finished difference. Result has 136 places, 139 transitions, 1361 flow [2024-06-28 00:03:20,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1361, PETRI_PLACES=136, PETRI_TRANSITIONS=139} [2024-06-28 00:03:20,226 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 106 predicate places. [2024-06-28 00:03:20,226 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 139 transitions, 1361 flow [2024-06-28 00:03:20,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:20,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:20,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:20,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 00:03:20,227 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:20,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:20,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1514947170, now seen corresponding path program 10 times [2024-06-28 00:03:20,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:20,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015747704] [2024-06-28 00:03:20,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:20,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:21,581 INFO 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 00:03:21,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:21,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015747704] [2024-06-28 00:03:21,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015747704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:21,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:21,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:21,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174233820] [2024-06-28 00:03:21,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:21,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:21,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:21,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:21,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:21,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:21,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 139 transitions, 1361 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:21,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:21,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:21,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:21,977 INFO L124 PetriNetUnfolderBase]: 347/616 cut-off events. [2024-06-28 00:03:21,977 INFO L125 PetriNetUnfolderBase]: For 10416/10416 co-relation queries the response was YES. [2024-06-28 00:03:21,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3613 conditions, 616 events. 347/616 cut-off events. For 10416/10416 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2555 event pairs, 59 based on Foata normal form. 1/615 useless extension candidates. Maximal degree in co-relation 3550. Up to 551 conditions per place. [2024-06-28 00:03:21,982 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 117 selfloop transitions, 31 changer transitions 0/150 dead transitions. [2024-06-28 00:03:21,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 150 transitions, 1685 flow [2024-06-28 00:03:21,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:21,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:21,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-28 00:03:21,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-06-28 00:03:21,983 INFO L175 Difference]: Start difference. First operand has 136 places, 139 transitions, 1361 flow. Second operand 8 states and 102 transitions. [2024-06-28 00:03:21,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 150 transitions, 1685 flow [2024-06-28 00:03:22,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 150 transitions, 1602 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 00:03:22,011 INFO L231 Difference]: Finished difference. Result has 138 places, 139 transitions, 1345 flow [2024-06-28 00:03:22,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1278, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1345, PETRI_PLACES=138, PETRI_TRANSITIONS=139} [2024-06-28 00:03:22,012 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2024-06-28 00:03:22,012 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 139 transitions, 1345 flow [2024-06-28 00:03:22,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 00:03:22,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:22,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:22,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 00:03:22,013 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:22,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:22,013 INFO L85 PathProgramCache]: Analyzing trace with hash -751022808, now seen corresponding path program 1 times [2024-06-28 00:03:22,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:22,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819968621] [2024-06-28 00:03:22,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:22,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:23,953 INFO 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 00:03:23,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:23,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819968621] [2024-06-28 00:03:23,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819968621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:23,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:23,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:23,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699031598] [2024-06-28 00:03:23,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:23,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:23,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:23,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:23,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:24,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:24,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 139 transitions, 1345 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:03:24,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:24,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:24,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:24,458 INFO L124 PetriNetUnfolderBase]: 344/611 cut-off events. [2024-06-28 00:03:24,459 INFO L125 PetriNetUnfolderBase]: For 10807/10807 co-relation queries the response was YES. [2024-06-28 00:03:24,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3547 conditions, 611 events. 344/611 cut-off events. For 10807/10807 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2518 event pairs, 72 based on Foata normal form. 2/611 useless extension candidates. Maximal degree in co-relation 3483. Up to 581 conditions per place. [2024-06-28 00:03:24,466 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 131 selfloop transitions, 14 changer transitions 0/147 dead transitions. [2024-06-28 00:03:24,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 147 transitions, 1653 flow [2024-06-28 00:03:24,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:24,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:24,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-28 00:03:24,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33691756272401435 [2024-06-28 00:03:24,474 INFO L175 Difference]: Start difference. First operand has 138 places, 139 transitions, 1345 flow. Second operand 9 states and 94 transitions. [2024-06-28 00:03:24,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 147 transitions, 1653 flow [2024-06-28 00:03:24,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 147 transitions, 1544 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-28 00:03:24,499 INFO L231 Difference]: Finished difference. Result has 136 places, 139 transitions, 1268 flow [2024-06-28 00:03:24,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1236, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1268, PETRI_PLACES=136, PETRI_TRANSITIONS=139} [2024-06-28 00:03:24,501 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 106 predicate places. [2024-06-28 00:03:24,501 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 139 transitions, 1268 flow [2024-06-28 00:03:24,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:03:24,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:24,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:24,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 00:03:24,502 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:24,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:24,502 INFO L85 PathProgramCache]: Analyzing trace with hash 2132794213, now seen corresponding path program 1 times [2024-06-28 00:03:24,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:24,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960405672] [2024-06-28 00:03:24,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:24,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:26,814 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 00:03:26,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:26,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960405672] [2024-06-28 00:03:26,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960405672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:26,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:26,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:26,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487318645] [2024-06-28 00:03:26,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:26,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:26,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:26,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:26,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:26,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:26,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 139 transitions, 1268 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:03:26,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:26,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:26,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:27,338 INFO L124 PetriNetUnfolderBase]: 350/622 cut-off events. [2024-06-28 00:03:27,338 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2024-06-28 00:03:27,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3521 conditions, 622 events. 350/622 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2585 event pairs, 69 based on Foata normal form. 2/622 useless extension candidates. Maximal degree in co-relation 3460. Up to 573 conditions per place. [2024-06-28 00:03:27,344 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 136 selfloop transitions, 17 changer transitions 0/155 dead transitions. [2024-06-28 00:03:27,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 155 transitions, 1629 flow [2024-06-28 00:03:27,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:27,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:27,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 00:03:27,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-28 00:03:27,346 INFO L175 Difference]: Start difference. First operand has 136 places, 139 transitions, 1268 flow. Second operand 9 states and 103 transitions. [2024-06-28 00:03:27,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 155 transitions, 1629 flow [2024-06-28 00:03:27,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 155 transitions, 1580 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:27,376 INFO L231 Difference]: Finished difference. Result has 137 places, 141 transitions, 1274 flow [2024-06-28 00:03:27,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1274, PETRI_PLACES=137, PETRI_TRANSITIONS=141} [2024-06-28 00:03:27,377 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2024-06-28 00:03:27,377 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 141 transitions, 1274 flow [2024-06-28 00:03:27,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:03:27,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:27,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:27,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 00:03:27,378 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:27,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:27,378 INFO L85 PathProgramCache]: Analyzing trace with hash 2136518863, now seen corresponding path program 2 times [2024-06-28 00:03:27,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:27,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273760554] [2024-06-28 00:03:27,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:27,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:29,490 INFO 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 00:03:29,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:29,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273760554] [2024-06-28 00:03:29,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273760554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:29,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:29,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:29,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242845688] [2024-06-28 00:03:29,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:29,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:29,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:29,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:29,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:29,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:29,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 141 transitions, 1274 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:03:29,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:29,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:29,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:30,159 INFO L124 PetriNetUnfolderBase]: 408/716 cut-off events. [2024-06-28 00:03:30,159 INFO L125 PetriNetUnfolderBase]: For 15169/15169 co-relation queries the response was YES. [2024-06-28 00:03:30,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4183 conditions, 716 events. 408/716 cut-off events. For 15169/15169 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3087 event pairs, 79 based on Foata normal form. 2/716 useless extension candidates. Maximal degree in co-relation 4124. Up to 531 conditions per place. [2024-06-28 00:03:30,169 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 123 selfloop transitions, 48 changer transitions 0/173 dead transitions. [2024-06-28 00:03:30,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 173 transitions, 1888 flow [2024-06-28 00:03:30,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:30,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:30,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-28 00:03:30,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-28 00:03:30,171 INFO L175 Difference]: Start difference. First operand has 137 places, 141 transitions, 1274 flow. Second operand 9 states and 118 transitions. [2024-06-28 00:03:30,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 173 transitions, 1888 flow [2024-06-28 00:03:30,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 173 transitions, 1834 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:30,203 INFO L231 Difference]: Finished difference. Result has 140 places, 152 transitions, 1454 flow [2024-06-28 00:03:30,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1226, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1454, PETRI_PLACES=140, PETRI_TRANSITIONS=152} [2024-06-28 00:03:30,204 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 110 predicate places. [2024-06-28 00:03:30,204 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 152 transitions, 1454 flow [2024-06-28 00:03:30,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:03:30,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:30,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:30,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 00:03:30,204 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:30,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:30,205 INFO L85 PathProgramCache]: Analyzing trace with hash 2136519080, now seen corresponding path program 1 times [2024-06-28 00:03:30,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:30,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228128548] [2024-06-28 00:03:30,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:30,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:32,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:32,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:32,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228128548] [2024-06-28 00:03:32,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228128548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:32,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:32,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:32,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119289707] [2024-06-28 00:03:32,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:32,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:32,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:32,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:32,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:32,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:32,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 152 transitions, 1454 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 00:03:32,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:32,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:32,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:32,689 INFO L124 PetriNetUnfolderBase]: 424/742 cut-off events. [2024-06-28 00:03:32,689 INFO L125 PetriNetUnfolderBase]: For 17495/17495 co-relation queries the response was YES. [2024-06-28 00:03:32,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4579 conditions, 742 events. 424/742 cut-off events. For 17495/17495 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3218 event pairs, 85 based on Foata normal form. 2/742 useless extension candidates. Maximal degree in co-relation 4519. Up to 636 conditions per place. [2024-06-28 00:03:32,694 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 127 selfloop transitions, 40 changer transitions 0/169 dead transitions. [2024-06-28 00:03:32,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 169 transitions, 1940 flow [2024-06-28 00:03:32,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:32,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:32,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-28 00:03:32,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-28 00:03:32,695 INFO L175 Difference]: Start difference. First operand has 140 places, 152 transitions, 1454 flow. Second operand 10 states and 117 transitions. [2024-06-28 00:03:32,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 169 transitions, 1940 flow [2024-06-28 00:03:32,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 169 transitions, 1898 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 00:03:32,725 INFO L231 Difference]: Finished difference. Result has 147 places, 156 transitions, 1557 flow [2024-06-28 00:03:32,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1557, PETRI_PLACES=147, PETRI_TRANSITIONS=156} [2024-06-28 00:03:32,726 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2024-06-28 00:03:32,727 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 156 transitions, 1557 flow [2024-06-28 00:03:32,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 00:03:32,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:32,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:32,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 00:03:32,727 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:32,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:32,728 INFO L85 PathProgramCache]: Analyzing trace with hash 2136513283, now seen corresponding path program 3 times [2024-06-28 00:03:32,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:32,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63219892] [2024-06-28 00:03:32,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:32,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:34,363 INFO 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 00:03:34,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:34,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63219892] [2024-06-28 00:03:34,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63219892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:34,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:34,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:34,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116676834] [2024-06-28 00:03:34,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:34,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:34,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:34,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:34,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:34,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:34,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 156 transitions, 1557 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:03:34,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:34,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:34,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:34,845 INFO L124 PetriNetUnfolderBase]: 420/736 cut-off events. [2024-06-28 00:03:34,846 INFO L125 PetriNetUnfolderBase]: For 17908/17908 co-relation queries the response was YES. [2024-06-28 00:03:34,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4619 conditions, 736 events. 420/736 cut-off events. For 17908/17908 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3179 event pairs, 81 based on Foata normal form. 2/736 useless extension candidates. Maximal degree in co-relation 4557. Up to 554 conditions per place. [2024-06-28 00:03:34,869 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 127 selfloop transitions, 47 changer transitions 0/176 dead transitions. [2024-06-28 00:03:34,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 176 transitions, 2038 flow [2024-06-28 00:03:34,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:34,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:34,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-28 00:03:34,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-28 00:03:34,885 INFO L175 Difference]: Start difference. First operand has 147 places, 156 transitions, 1557 flow. Second operand 9 states and 118 transitions. [2024-06-28 00:03:34,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 176 transitions, 2038 flow [2024-06-28 00:03:34,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 176 transitions, 1980 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 00:03:34,979 INFO L231 Difference]: Finished difference. Result has 150 places, 156 transitions, 1599 flow [2024-06-28 00:03:34,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1499, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1599, PETRI_PLACES=150, PETRI_TRANSITIONS=156} [2024-06-28 00:03:34,980 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 120 predicate places. [2024-06-28 00:03:34,980 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 156 transitions, 1599 flow [2024-06-28 00:03:34,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:03:34,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:34,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:34,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 00:03:34,981 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:34,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:34,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1077308650, now seen corresponding path program 2 times [2024-06-28 00:03:34,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:34,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203395421] [2024-06-28 00:03:34,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:34,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:37,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:37,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:37,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203395421] [2024-06-28 00:03:37,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203395421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:37,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:37,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:37,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899567674] [2024-06-28 00:03:37,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:37,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:37,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:37,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:37,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:37,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:37,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 156 transitions, 1599 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 00:03:37,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:37,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:37,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:37,685 INFO L124 PetriNetUnfolderBase]: 426/746 cut-off events. [2024-06-28 00:03:37,686 INFO L125 PetriNetUnfolderBase]: For 19345/19345 co-relation queries the response was YES. [2024-06-28 00:03:37,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4787 conditions, 746 events. 426/746 cut-off events. For 19345/19345 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3255 event pairs, 85 based on Foata normal form. 2/746 useless extension candidates. Maximal degree in co-relation 4723. Up to 692 conditions per place. [2024-06-28 00:03:37,692 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 140 selfloop transitions, 26 changer transitions 0/168 dead transitions. [2024-06-28 00:03:37,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 168 transitions, 1987 flow [2024-06-28 00:03:37,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:37,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:37,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 00:03:37,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 00:03:37,693 INFO L175 Difference]: Start difference. First operand has 150 places, 156 transitions, 1599 flow. Second operand 10 states and 111 transitions. [2024-06-28 00:03:37,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 168 transitions, 1987 flow [2024-06-28 00:03:37,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 168 transitions, 1884 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:37,731 INFO L231 Difference]: Finished difference. Result has 153 places, 158 transitions, 1585 flow [2024-06-28 00:03:37,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1496, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1585, PETRI_PLACES=153, PETRI_TRANSITIONS=158} [2024-06-28 00:03:37,732 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 123 predicate places. [2024-06-28 00:03:37,732 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 158 transitions, 1585 flow [2024-06-28 00:03:37,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 00:03:37,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:37,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:37,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 00:03:37,733 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:37,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:37,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1077308433, now seen corresponding path program 4 times [2024-06-28 00:03:37,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:37,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655614543] [2024-06-28 00:03:37,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:37,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:38,990 INFO 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 00:03:38,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:38,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655614543] [2024-06-28 00:03:38,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655614543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:38,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:38,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:38,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673277714] [2024-06-28 00:03:38,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:38,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:38,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:38,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:38,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:39,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:39,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 158 transitions, 1585 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:03:39,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:39,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:39,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:39,311 INFO L124 PetriNetUnfolderBase]: 432/756 cut-off events. [2024-06-28 00:03:39,311 INFO L125 PetriNetUnfolderBase]: For 20390/20390 co-relation queries the response was YES. [2024-06-28 00:03:39,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4810 conditions, 756 events. 432/756 cut-off events. For 20390/20390 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3298 event pairs, 85 based on Foata normal form. 2/756 useless extension candidates. Maximal degree in co-relation 4745. Up to 702 conditions per place. [2024-06-28 00:03:39,317 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 142 selfloop transitions, 26 changer transitions 0/170 dead transitions. [2024-06-28 00:03:39,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 170 transitions, 1967 flow [2024-06-28 00:03:39,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:39,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:39,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 00:03:39,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-28 00:03:39,318 INFO L175 Difference]: Start difference. First operand has 153 places, 158 transitions, 1585 flow. Second operand 9 states and 105 transitions. [2024-06-28 00:03:39,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 170 transitions, 1967 flow [2024-06-28 00:03:39,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 170 transitions, 1902 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:39,355 INFO L231 Difference]: Finished difference. Result has 155 places, 160 transitions, 1601 flow [2024-06-28 00:03:39,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1601, PETRI_PLACES=155, PETRI_TRANSITIONS=160} [2024-06-28 00:03:39,356 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 125 predicate places. [2024-06-28 00:03:39,356 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 160 transitions, 1601 flow [2024-06-28 00:03:39,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:03:39,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:39,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:39,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 00:03:39,357 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:39,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:39,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1199365654, now seen corresponding path program 3 times [2024-06-28 00:03:39,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:39,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121433392] [2024-06-28 00:03:39,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:39,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:41,124 INFO 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 00:03:41,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:41,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121433392] [2024-06-28 00:03:41,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121433392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:41,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:41,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:41,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569013677] [2024-06-28 00:03:41,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:41,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:41,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:41,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:41,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:41,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:41,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 160 transitions, 1601 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:03:41,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:41,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:41,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:41,696 INFO L124 PetriNetUnfolderBase]: 438/766 cut-off events. [2024-06-28 00:03:41,696 INFO L125 PetriNetUnfolderBase]: For 21650/21650 co-relation queries the response was YES. [2024-06-28 00:03:41,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4913 conditions, 766 events. 438/766 cut-off events. For 21650/21650 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3367 event pairs, 80 based on Foata normal form. 2/766 useless extension candidates. Maximal degree in co-relation 4847. Up to 671 conditions per place. [2024-06-28 00:03:41,705 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 137 selfloop transitions, 36 changer transitions 0/175 dead transitions. [2024-06-28 00:03:41,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 175 transitions, 2025 flow [2024-06-28 00:03:41,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:41,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:41,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-28 00:03:41,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-28 00:03:41,707 INFO L175 Difference]: Start difference. First operand has 155 places, 160 transitions, 1601 flow. Second operand 9 states and 112 transitions. [2024-06-28 00:03:41,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 175 transitions, 2025 flow [2024-06-28 00:03:41,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 175 transitions, 1966 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:41,761 INFO L231 Difference]: Finished difference. Result has 157 places, 162 transitions, 1655 flow [2024-06-28 00:03:41,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1655, PETRI_PLACES=157, PETRI_TRANSITIONS=162} [2024-06-28 00:03:41,762 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-28 00:03:41,762 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 162 transitions, 1655 flow [2024-06-28 00:03:41,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:03:41,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:41,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:41,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 00:03:41,763 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:41,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:41,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1199365437, now seen corresponding path program 5 times [2024-06-28 00:03:41,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:41,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505537425] [2024-06-28 00:03:41,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:41,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:43,368 INFO 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 00:03:43,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:43,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505537425] [2024-06-28 00:03:43,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505537425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:43,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:43,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:43,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657093192] [2024-06-28 00:03:43,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:43,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:43,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:43,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:43,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:43,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:43,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 162 transitions, 1655 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:03:43,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:43,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:43,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:43,945 INFO L124 PetriNetUnfolderBase]: 460/802 cut-off events. [2024-06-28 00:03:43,945 INFO L125 PetriNetUnfolderBase]: For 24213/24213 co-relation queries the response was YES. [2024-06-28 00:03:43,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5240 conditions, 802 events. 460/802 cut-off events. For 24213/24213 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3542 event pairs, 85 based on Foata normal form. 2/802 useless extension candidates. Maximal degree in co-relation 5173. Up to 719 conditions per place. [2024-06-28 00:03:43,955 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 147 selfloop transitions, 34 changer transitions 0/183 dead transitions. [2024-06-28 00:03:43,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 183 transitions, 2199 flow [2024-06-28 00:03:43,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:43,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:43,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-28 00:03:43,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-28 00:03:43,981 INFO L175 Difference]: Start difference. First operand has 157 places, 162 transitions, 1655 flow. Second operand 9 states and 112 transitions. [2024-06-28 00:03:43,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 183 transitions, 2199 flow [2024-06-28 00:03:44,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 183 transitions, 2108 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:44,051 INFO L231 Difference]: Finished difference. Result has 160 places, 169 transitions, 1731 flow [2024-06-28 00:03:44,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1564, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1731, PETRI_PLACES=160, PETRI_TRANSITIONS=169} [2024-06-28 00:03:44,053 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-28 00:03:44,053 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 169 transitions, 1731 flow [2024-06-28 00:03:44,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:03:44,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:44,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:44,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 00:03:44,054 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:44,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:44,054 INFO L85 PathProgramCache]: Analyzing trace with hash -2014563483, now seen corresponding path program 6 times [2024-06-28 00:03:44,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:44,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642175280] [2024-06-28 00:03:44,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:44,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:45,965 INFO 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 00:03:45,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:45,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642175280] [2024-06-28 00:03:45,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642175280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:45,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:45,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:45,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133267311] [2024-06-28 00:03:45,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:45,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:45,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:45,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:45,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:46,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:46,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 169 transitions, 1731 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:03:46,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:46,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:46,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:46,377 INFO L124 PetriNetUnfolderBase]: 456/796 cut-off events. [2024-06-28 00:03:46,378 INFO L125 PetriNetUnfolderBase]: For 24336/24336 co-relation queries the response was YES. [2024-06-28 00:03:46,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5190 conditions, 796 events. 456/796 cut-off events. For 24336/24336 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3519 event pairs, 85 based on Foata normal form. 2/796 useless extension candidates. Maximal degree in co-relation 5121. Up to 716 conditions per place. [2024-06-28 00:03:46,384 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 144 selfloop transitions, 35 changer transitions 0/181 dead transitions. [2024-06-28 00:03:46,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 181 transitions, 2124 flow [2024-06-28 00:03:46,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:46,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:46,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-28 00:03:46,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-28 00:03:46,388 INFO L175 Difference]: Start difference. First operand has 160 places, 169 transitions, 1731 flow. Second operand 9 states and 109 transitions. [2024-06-28 00:03:46,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 181 transitions, 2124 flow [2024-06-28 00:03:46,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 181 transitions, 2066 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 00:03:46,437 INFO L231 Difference]: Finished difference. Result has 165 places, 169 transitions, 1749 flow [2024-06-28 00:03:46,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1673, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1749, PETRI_PLACES=165, PETRI_TRANSITIONS=169} [2024-06-28 00:03:46,437 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 135 predicate places. [2024-06-28 00:03:46,437 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 169 transitions, 1749 flow [2024-06-28 00:03:46,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:03:46,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:46,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:46,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 00:03:46,438 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:46,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:46,439 INFO L85 PathProgramCache]: Analyzing trace with hash -2072905398, now seen corresponding path program 4 times [2024-06-28 00:03:46,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:46,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392358044] [2024-06-28 00:03:46,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:46,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:48,033 INFO 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 00:03:48,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:48,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392358044] [2024-06-28 00:03:48,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392358044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:48,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:48,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:48,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920127531] [2024-06-28 00:03:48,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:48,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:48,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:48,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:48,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:48,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:48,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 169 transitions, 1749 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 00:03:48,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:48,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:48,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:48,748 INFO L124 PetriNetUnfolderBase]: 462/805 cut-off events. [2024-06-28 00:03:48,748 INFO L125 PetriNetUnfolderBase]: For 25651/25651 co-relation queries the response was YES. [2024-06-28 00:03:48,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5317 conditions, 805 events. 462/805 cut-off events. For 25651/25651 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3581 event pairs, 80 based on Foata normal form. 2/805 useless extension candidates. Maximal degree in co-relation 5246. Up to 749 conditions per place. [2024-06-28 00:03:48,758 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 156 selfloop transitions, 24 changer transitions 0/182 dead transitions. [2024-06-28 00:03:48,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 182 transitions, 2177 flow [2024-06-28 00:03:48,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:48,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:48,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 00:03:48,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:03:48,760 INFO L175 Difference]: Start difference. First operand has 165 places, 169 transitions, 1749 flow. Second operand 10 states and 110 transitions. [2024-06-28 00:03:48,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 182 transitions, 2177 flow [2024-06-28 00:03:48,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 182 transitions, 2110 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:48,863 INFO L231 Difference]: Finished difference. Result has 168 places, 171 transitions, 1771 flow [2024-06-28 00:03:48,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1682, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1771, PETRI_PLACES=168, PETRI_TRANSITIONS=171} [2024-06-28 00:03:48,863 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 138 predicate places. [2024-06-28 00:03:48,863 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 171 transitions, 1771 flow [2024-06-28 00:03:48,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 00:03:48,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:48,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:48,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 00:03:48,864 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:48,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:48,864 INFO L85 PathProgramCache]: Analyzing trace with hash -732387702, now seen corresponding path program 5 times [2024-06-28 00:03:48,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:48,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088080795] [2024-06-28 00:03:48,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:48,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:50,625 INFO 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 00:03:50,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:50,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088080795] [2024-06-28 00:03:50,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088080795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:50,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:50,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:50,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150400230] [2024-06-28 00:03:50,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:50,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:50,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:50,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:50,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:50,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:50,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 171 transitions, 1771 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 00:03:50,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:50,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:50,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:51,171 INFO L124 PetriNetUnfolderBase]: 468/815 cut-off events. [2024-06-28 00:03:51,172 INFO L125 PetriNetUnfolderBase]: For 27044/27044 co-relation queries the response was YES. [2024-06-28 00:03:51,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5434 conditions, 815 events. 468/815 cut-off events. For 27044/27044 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3634 event pairs, 83 based on Foata normal form. 2/815 useless extension candidates. Maximal degree in co-relation 5362. Up to 771 conditions per place. [2024-06-28 00:03:51,182 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 161 selfloop transitions, 20 changer transitions 0/183 dead transitions. [2024-06-28 00:03:51,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 183 transitions, 2199 flow [2024-06-28 00:03:51,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:51,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:51,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 00:03:51,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 00:03:51,183 INFO L175 Difference]: Start difference. First operand has 168 places, 171 transitions, 1771 flow. Second operand 10 states and 108 transitions. [2024-06-28 00:03:51,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 183 transitions, 2199 flow [2024-06-28 00:03:51,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 183 transitions, 2125 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:51,261 INFO L231 Difference]: Finished difference. Result has 170 places, 173 transitions, 1782 flow [2024-06-28 00:03:51,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1697, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1782, PETRI_PLACES=170, PETRI_TRANSITIONS=173} [2024-06-28 00:03:51,262 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 140 predicate places. [2024-06-28 00:03:51,263 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 173 transitions, 1782 flow [2024-06-28 00:03:51,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 00:03:51,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:51,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:51,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 00:03:51,263 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:51,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:51,264 INFO L85 PathProgramCache]: Analyzing trace with hash 622045306, now seen corresponding path program 6 times [2024-06-28 00:03:51,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:51,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319988558] [2024-06-28 00:03:51,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:51,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:52,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:52,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:52,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319988558] [2024-06-28 00:03:52,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319988558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:52,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:52,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:52,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333911189] [2024-06-28 00:03:52,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:52,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:52,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:52,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:52,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:53,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:53,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 173 transitions, 1782 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 00:03:53,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:53,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:53,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:53,496 INFO L124 PetriNetUnfolderBase]: 474/825 cut-off events. [2024-06-28 00:03:53,496 INFO L125 PetriNetUnfolderBase]: For 28519/28519 co-relation queries the response was YES. [2024-06-28 00:03:53,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5534 conditions, 825 events. 474/825 cut-off events. For 28519/28519 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3678 event pairs, 85 based on Foata normal form. 2/825 useless extension candidates. Maximal degree in co-relation 5461. Up to 783 conditions per place. [2024-06-28 00:03:53,501 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 160 selfloop transitions, 22 changer transitions 0/184 dead transitions. [2024-06-28 00:03:53,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 184 transitions, 2206 flow [2024-06-28 00:03:53,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:53,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:53,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 00:03:53,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 00:03:53,503 INFO L175 Difference]: Start difference. First operand has 170 places, 173 transitions, 1782 flow. Second operand 10 states and 108 transitions. [2024-06-28 00:03:53,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 184 transitions, 2206 flow [2024-06-28 00:03:53,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 184 transitions, 2139 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:53,567 INFO L231 Difference]: Finished difference. Result has 173 places, 175 transitions, 1804 flow [2024-06-28 00:03:53,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1715, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1804, PETRI_PLACES=173, PETRI_TRANSITIONS=175} [2024-06-28 00:03:53,568 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 143 predicate places. [2024-06-28 00:03:53,568 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 175 transitions, 1804 flow [2024-06-28 00:03:53,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 00:03:53,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:53,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:53,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 00:03:53,569 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:53,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:53,569 INFO L85 PathProgramCache]: Analyzing trace with hash -988895869, now seen corresponding path program 7 times [2024-06-28 00:03:53,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:53,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520700708] [2024-06-28 00:03:53,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:53,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:54,787 INFO 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 00:03:54,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:54,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520700708] [2024-06-28 00:03:54,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520700708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:54,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:54,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:54,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248290902] [2024-06-28 00:03:54,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:54,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:54,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:54,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:54,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:54,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:54,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 175 transitions, 1804 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:03:54,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:54,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:54,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:55,216 INFO L124 PetriNetUnfolderBase]: 480/835 cut-off events. [2024-06-28 00:03:55,216 INFO L125 PetriNetUnfolderBase]: For 30018/30018 co-relation queries the response was YES. [2024-06-28 00:03:55,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5611 conditions, 835 events. 480/835 cut-off events. For 30018/30018 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3740 event pairs, 84 based on Foata normal form. 2/835 useless extension candidates. Maximal degree in co-relation 5537. Up to 793 conditions per place. [2024-06-28 00:03:55,223 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 162 selfloop transitions, 22 changer transitions 0/186 dead transitions. [2024-06-28 00:03:55,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 186 transitions, 2222 flow [2024-06-28 00:03:55,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:55,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:55,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 00:03:55,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 00:03:55,224 INFO L175 Difference]: Start difference. First operand has 173 places, 175 transitions, 1804 flow. Second operand 9 states and 102 transitions. [2024-06-28 00:03:55,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 186 transitions, 2222 flow [2024-06-28 00:03:55,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 186 transitions, 2155 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:55,286 INFO L231 Difference]: Finished difference. Result has 174 places, 177 transitions, 1818 flow [2024-06-28 00:03:55,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1737, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1818, PETRI_PLACES=174, PETRI_TRANSITIONS=177} [2024-06-28 00:03:55,288 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2024-06-28 00:03:55,289 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 177 transitions, 1818 flow [2024-06-28 00:03:55,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:03:55,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:55,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:55,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 00:03:55,289 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:55,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:55,290 INFO L85 PathProgramCache]: Analyzing trace with hash 878545599, now seen corresponding path program 8 times [2024-06-28 00:03:55,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:55,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438554180] [2024-06-28 00:03:55,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:55,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:56,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:56,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:56,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438554180] [2024-06-28 00:03:56,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438554180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:56,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:56,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:56,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609990492] [2024-06-28 00:03:56,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:56,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:56,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:56,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:56,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:56,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:56,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 177 transitions, 1818 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:03:56,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:56,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:56,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:57,107 INFO L124 PetriNetUnfolderBase]: 478/833 cut-off events. [2024-06-28 00:03:57,108 INFO L125 PetriNetUnfolderBase]: For 31363/31363 co-relation queries the response was YES. [2024-06-28 00:03:57,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5490 conditions, 833 events. 478/833 cut-off events. For 31363/31363 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3754 event pairs, 79 based on Foata normal form. 6/837 useless extension candidates. Maximal degree in co-relation 5415. Up to 775 conditions per place. [2024-06-28 00:03:57,114 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 164 selfloop transitions, 23 changer transitions 0/189 dead transitions. [2024-06-28 00:03:57,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 189 transitions, 2252 flow [2024-06-28 00:03:57,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:57,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:57,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-28 00:03:57,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-28 00:03:57,116 INFO L175 Difference]: Start difference. First operand has 174 places, 177 transitions, 1818 flow. Second operand 9 states and 104 transitions. [2024-06-28 00:03:57,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 189 transitions, 2252 flow [2024-06-28 00:03:57,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 189 transitions, 2193 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:57,181 INFO L231 Difference]: Finished difference. Result has 176 places, 179 transitions, 1849 flow [2024-06-28 00:03:57,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1759, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1849, PETRI_PLACES=176, PETRI_TRANSITIONS=179} [2024-06-28 00:03:57,192 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2024-06-28 00:03:57,192 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 179 transitions, 1849 flow [2024-06-28 00:03:57,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:03:57,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:57,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:57,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 00:03:57,193 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:57,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:57,197 INFO L85 PathProgramCache]: Analyzing trace with hash -732395142, now seen corresponding path program 7 times [2024-06-28 00:03:57,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:57,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211480322] [2024-06-28 00:03:57,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:57,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:59,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:59,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:59,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211480322] [2024-06-28 00:03:59,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211480322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:59,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:59,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:59,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15802912] [2024-06-28 00:03:59,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:59,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:59,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:59,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:59,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:59,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:59,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 179 transitions, 1849 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:03:59,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:59,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:59,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:59,805 INFO L124 PetriNetUnfolderBase]: 484/843 cut-off events. [2024-06-28 00:03:59,806 INFO L125 PetriNetUnfolderBase]: For 29910/29910 co-relation queries the response was YES. [2024-06-28 00:03:59,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5607 conditions, 843 events. 484/843 cut-off events. For 29910/29910 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3807 event pairs, 81 based on Foata normal form. 2/843 useless extension candidates. Maximal degree in co-relation 5531. Up to 801 conditions per place. [2024-06-28 00:03:59,825 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 166 selfloop transitions, 22 changer transitions 0/190 dead transitions. [2024-06-28 00:03:59,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 190 transitions, 2289 flow [2024-06-28 00:03:59,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:59,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:59,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 00:03:59,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 00:03:59,828 INFO L175 Difference]: Start difference. First operand has 176 places, 179 transitions, 1849 flow. Second operand 9 states and 102 transitions. [2024-06-28 00:03:59,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 190 transitions, 2289 flow [2024-06-28 00:03:59,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 190 transitions, 2221 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:59,916 INFO L231 Difference]: Finished difference. Result has 178 places, 181 transitions, 1874 flow [2024-06-28 00:03:59,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1781, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1874, PETRI_PLACES=178, PETRI_TRANSITIONS=181} [2024-06-28 00:03:59,917 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 148 predicate places. [2024-06-28 00:03:59,917 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 181 transitions, 1874 flow [2024-06-28 00:03:59,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:03:59,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:59,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:59,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 00:03:59,918 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:59,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:59,918 INFO L85 PathProgramCache]: Analyzing trace with hash -722864223, now seen corresponding path program 1 times [2024-06-28 00:03:59,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:59,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560222159] [2024-06-28 00:03:59,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:59,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:01,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:01,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:01,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560222159] [2024-06-28 00:04:01,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560222159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:01,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:01,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:01,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153710148] [2024-06-28 00:04:01,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:01,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:01,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:01,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:01,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:01,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:01,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 181 transitions, 1874 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:04:01,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:01,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:01,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:01,518 INFO L124 PetriNetUnfolderBase]: 482/840 cut-off events. [2024-06-28 00:04:01,519 INFO L125 PetriNetUnfolderBase]: For 29422/29422 co-relation queries the response was YES. [2024-06-28 00:04:01,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5526 conditions, 840 events. 482/840 cut-off events. For 29422/29422 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3806 event pairs, 80 based on Foata normal form. 1/839 useless extension candidates. Maximal degree in co-relation 5449. Up to 807 conditions per place. [2024-06-28 00:04:01,528 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 170 selfloop transitions, 19 changer transitions 0/191 dead transitions. [2024-06-28 00:04:01,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 191 transitions, 2304 flow [2024-06-28 00:04:01,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:01,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:01,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 00:04:01,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-28 00:04:01,530 INFO L175 Difference]: Start difference. First operand has 178 places, 181 transitions, 1874 flow. Second operand 10 states and 104 transitions. [2024-06-28 00:04:01,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 191 transitions, 2304 flow [2024-06-28 00:04:01,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 191 transitions, 2233 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:01,599 INFO L231 Difference]: Finished difference. Result has 181 places, 183 transitions, 1888 flow [2024-06-28 00:04:01,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1803, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1888, PETRI_PLACES=181, PETRI_TRANSITIONS=183} [2024-06-28 00:04:01,602 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2024-06-28 00:04:01,602 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 183 transitions, 1888 flow [2024-06-28 00:04:01,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:04:01,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:01,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:01,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 00:04:01,607 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:01,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:01,608 INFO L85 PathProgramCache]: Analyzing trace with hash -989103259, now seen corresponding path program 9 times [2024-06-28 00:04:01,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:01,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496945123] [2024-06-28 00:04:01,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:01,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:03,329 INFO 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 00:04:03,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:03,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496945123] [2024-06-28 00:04:03,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496945123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:03,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:03,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:03,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266891700] [2024-06-28 00:04:03,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:03,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:03,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:03,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:03,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:03,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:03,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 183 transitions, 1888 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:04:03,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:03,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:03,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:03,846 INFO L124 PetriNetUnfolderBase]: 513/890 cut-off events. [2024-06-28 00:04:03,846 INFO L125 PetriNetUnfolderBase]: For 36304/36304 co-relation queries the response was YES. [2024-06-28 00:04:03,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6063 conditions, 890 events. 513/890 cut-off events. For 36304/36304 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4071 event pairs, 77 based on Foata normal form. 2/890 useless extension candidates. Maximal degree in co-relation 5985. Up to 722 conditions per place. [2024-06-28 00:04:03,856 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 155 selfloop transitions, 50 changer transitions 0/207 dead transitions. [2024-06-28 00:04:03,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 207 transitions, 2648 flow [2024-06-28 00:04:03,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:03,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:03,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-28 00:04:03,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-28 00:04:03,857 INFO L175 Difference]: Start difference. First operand has 181 places, 183 transitions, 1888 flow. Second operand 9 states and 112 transitions. [2024-06-28 00:04:03,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 207 transitions, 2648 flow [2024-06-28 00:04:03,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 207 transitions, 2583 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:03,939 INFO L231 Difference]: Finished difference. Result has 184 places, 191 transitions, 2112 flow [2024-06-28 00:04:03,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1823, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2112, PETRI_PLACES=184, PETRI_TRANSITIONS=191} [2024-06-28 00:04:03,944 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-06-28 00:04:03,945 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 191 transitions, 2112 flow [2024-06-28 00:04:03,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:04:03,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:03,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:03,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 00:04:03,945 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:03,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:03,947 INFO L85 PathProgramCache]: Analyzing trace with hash 2129325917, now seen corresponding path program 10 times [2024-06-28 00:04:03,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:03,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614065508] [2024-06-28 00:04:03,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:03,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:05,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:05,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:05,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614065508] [2024-06-28 00:04:05,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614065508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:05,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:05,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:05,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654175968] [2024-06-28 00:04:05,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:05,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:05,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:05,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:05,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:05,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:05,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 191 transitions, 2112 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:04:05,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:05,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:05,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:05,650 INFO L124 PetriNetUnfolderBase]: 509/884 cut-off events. [2024-06-28 00:04:05,650 INFO L125 PetriNetUnfolderBase]: For 36818/36818 co-relation queries the response was YES. [2024-06-28 00:04:05,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6178 conditions, 884 events. 509/884 cut-off events. For 36818/36818 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4036 event pairs, 78 based on Foata normal form. 2/884 useless extension candidates. Maximal degree in co-relation 6097. Up to 719 conditions per place. [2024-06-28 00:04:05,658 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 161 selfloop transitions, 43 changer transitions 0/206 dead transitions. [2024-06-28 00:04:05,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 206 transitions, 2655 flow [2024-06-28 00:04:05,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:05,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:05,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-28 00:04:05,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-28 00:04:05,666 INFO L175 Difference]: Start difference. First operand has 184 places, 191 transitions, 2112 flow. Second operand 9 states and 111 transitions. [2024-06-28 00:04:05,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 206 transitions, 2655 flow [2024-06-28 00:04:05,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 206 transitions, 2537 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:05,767 INFO L231 Difference]: Finished difference. Result has 187 places, 191 transitions, 2089 flow [2024-06-28 00:04:05,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1998, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2089, PETRI_PLACES=187, PETRI_TRANSITIONS=191} [2024-06-28 00:04:05,768 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 157 predicate places. [2024-06-28 00:04:05,768 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 191 transitions, 2089 flow [2024-06-28 00:04:05,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:04:05,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:05,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:05,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 00:04:05,772 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:05,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:05,772 INFO L85 PathProgramCache]: Analyzing trace with hash 2129326134, now seen corresponding path program 8 times [2024-06-28 00:04:05,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:05,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997791586] [2024-06-28 00:04:05,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:05,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:07,376 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 00:04:07,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:07,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997791586] [2024-06-28 00:04:07,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997791586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:07,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:07,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:07,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252373411] [2024-06-28 00:04:07,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:07,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:07,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:07,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:07,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:07,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:07,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 191 transitions, 2089 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:04:07,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:07,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:07,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:07,804 INFO L124 PetriNetUnfolderBase]: 505/878 cut-off events. [2024-06-28 00:04:07,805 INFO L125 PetriNetUnfolderBase]: For 36173/36173 co-relation queries the response was YES. [2024-06-28 00:04:07,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5988 conditions, 878 events. 505/878 cut-off events. For 36173/36173 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4004 event pairs, 81 based on Foata normal form. 2/878 useless extension candidates. Maximal degree in co-relation 5908. Up to 774 conditions per place. [2024-06-28 00:04:07,813 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 160 selfloop transitions, 41 changer transitions 0/203 dead transitions. [2024-06-28 00:04:07,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 203 transitions, 2611 flow [2024-06-28 00:04:07,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:07,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:07,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 00:04:07,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-28 00:04:07,819 INFO L175 Difference]: Start difference. First operand has 187 places, 191 transitions, 2089 flow. Second operand 10 states and 113 transitions. [2024-06-28 00:04:07,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 203 transitions, 2611 flow [2024-06-28 00:04:07,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 203 transitions, 2532 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:07,930 INFO L231 Difference]: Finished difference. Result has 191 places, 191 transitions, 2097 flow [2024-06-28 00:04:07,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2010, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2097, PETRI_PLACES=191, PETRI_TRANSITIONS=191} [2024-06-28 00:04:07,933 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2024-06-28 00:04:07,934 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 191 transitions, 2097 flow [2024-06-28 00:04:07,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:04:07,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:07,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:07,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 00:04:07,934 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:07,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:07,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1710349951, now seen corresponding path program 11 times [2024-06-28 00:04:07,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:07,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62615216] [2024-06-28 00:04:07,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:07,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:08,708 INFO 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 00:04:08,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:08,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62615216] [2024-06-28 00:04:08,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62615216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:08,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:08,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:08,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149824915] [2024-06-28 00:04:08,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:08,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:08,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:08,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:08,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:08,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:08,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 191 transitions, 2097 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:04:08,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:08,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:08,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:09,487 INFO L124 PetriNetUnfolderBase]: 521/904 cut-off events. [2024-06-28 00:04:09,488 INFO L125 PetriNetUnfolderBase]: For 39456/39456 co-relation queries the response was YES. [2024-06-28 00:04:09,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6212 conditions, 904 events. 521/904 cut-off events. For 39456/39456 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4145 event pairs, 50 based on Foata normal form. 2/904 useless extension candidates. Maximal degree in co-relation 6131. Up to 751 conditions per place. [2024-06-28 00:04:09,498 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 173 selfloop transitions, 47 changer transitions 0/222 dead transitions. [2024-06-28 00:04:09,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 222 transitions, 2745 flow [2024-06-28 00:04:09,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:04:09,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:04:09,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 159 transitions. [2024-06-28 00:04:09,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3663594470046083 [2024-06-28 00:04:09,505 INFO L175 Difference]: Start difference. First operand has 191 places, 191 transitions, 2097 flow. Second operand 14 states and 159 transitions. [2024-06-28 00:04:09,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 222 transitions, 2745 flow [2024-06-28 00:04:09,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 222 transitions, 2631 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:09,622 INFO L231 Difference]: Finished difference. Result has 197 places, 195 transitions, 2126 flow [2024-06-28 00:04:09,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1983, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2126, PETRI_PLACES=197, PETRI_TRANSITIONS=195} [2024-06-28 00:04:09,623 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-28 00:04:09,623 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 195 transitions, 2126 flow [2024-06-28 00:04:09,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:04:09,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:09,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:09,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 00:04:09,624 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:09,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:09,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1002054041, now seen corresponding path program 12 times [2024-06-28 00:04:09,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:09,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280914616] [2024-06-28 00:04:09,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:09,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:10,542 INFO 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 00:04:10,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:10,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280914616] [2024-06-28 00:04:10,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280914616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:10,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:10,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:10,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688321513] [2024-06-28 00:04:10,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:10,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:10,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:10,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:10,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:10,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:10,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 195 transitions, 2126 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:04:10,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:10,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:10,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:11,112 INFO L124 PetriNetUnfolderBase]: 527/914 cut-off events. [2024-06-28 00:04:11,112 INFO L125 PetriNetUnfolderBase]: For 41036/41036 co-relation queries the response was YES. [2024-06-28 00:04:11,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6308 conditions, 914 events. 527/914 cut-off events. For 41036/41036 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4216 event pairs, 56 based on Foata normal form. 2/914 useless extension candidates. Maximal degree in co-relation 6226. Up to 814 conditions per place. [2024-06-28 00:04:11,119 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 182 selfloop transitions, 33 changer transitions 0/217 dead transitions. [2024-06-28 00:04:11,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 217 transitions, 2643 flow [2024-06-28 00:04:11,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:11,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:11,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-28 00:04:11,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:04:11,121 INFO L175 Difference]: Start difference. First operand has 197 places, 195 transitions, 2126 flow. Second operand 10 states and 120 transitions. [2024-06-28 00:04:11,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 217 transitions, 2643 flow [2024-06-28 00:04:11,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 217 transitions, 2561 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-28 00:04:11,231 INFO L231 Difference]: Finished difference. Result has 197 places, 197 transitions, 2143 flow [2024-06-28 00:04:11,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2050, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2143, PETRI_PLACES=197, PETRI_TRANSITIONS=197} [2024-06-28 00:04:11,231 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-28 00:04:11,232 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 197 transitions, 2143 flow [2024-06-28 00:04:11,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:04:11,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:11,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:11,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 00:04:11,232 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:11,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:11,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1893252798, now seen corresponding path program 9 times [2024-06-28 00:04:11,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:11,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681769351] [2024-06-28 00:04:11,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:11,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:13,017 INFO 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 00:04:13,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:13,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681769351] [2024-06-28 00:04:13,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681769351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:13,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:13,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:13,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226134245] [2024-06-28 00:04:13,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:13,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:13,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:13,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:13,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:13,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:13,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 197 transitions, 2143 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:04:13,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:13,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:13,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:13,912 INFO L124 PetriNetUnfolderBase]: 528/916 cut-off events. [2024-06-28 00:04:13,912 INFO L125 PetriNetUnfolderBase]: For 41688/41688 co-relation queries the response was YES. [2024-06-28 00:04:13,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6338 conditions, 916 events. 528/916 cut-off events. For 41688/41688 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4237 event pairs, 48 based on Foata normal form. 2/916 useless extension candidates. Maximal degree in co-relation 6254. Up to 683 conditions per place. [2024-06-28 00:04:13,922 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 133 selfloop transitions, 88 changer transitions 0/223 dead transitions. [2024-06-28 00:04:13,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 223 transitions, 2791 flow [2024-06-28 00:04:13,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:04:13,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:04:13,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 163 transitions. [2024-06-28 00:04:13,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37557603686635943 [2024-06-28 00:04:13,923 INFO L175 Difference]: Start difference. First operand has 197 places, 197 transitions, 2143 flow. Second operand 14 states and 163 transitions. [2024-06-28 00:04:13,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 223 transitions, 2791 flow [2024-06-28 00:04:14,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 223 transitions, 2718 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:14,093 INFO L231 Difference]: Finished difference. Result has 203 places, 199 transitions, 2305 flow [2024-06-28 00:04:14,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2070, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2305, PETRI_PLACES=203, PETRI_TRANSITIONS=199} [2024-06-28 00:04:14,094 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-28 00:04:14,094 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 199 transitions, 2305 flow [2024-06-28 00:04:14,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:04:14,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:14,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:14,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 00:04:14,094 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:14,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:14,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1005773111, now seen corresponding path program 13 times [2024-06-28 00:04:14,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:14,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101961207] [2024-06-28 00:04:14,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:14,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:14,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:14,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:14,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101961207] [2024-06-28 00:04:14,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101961207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:14,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:14,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:14,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970909241] [2024-06-28 00:04:14,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:14,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:14,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:14,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:14,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:14,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:14,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 199 transitions, 2305 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:04:14,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:14,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:14,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:15,536 INFO L124 PetriNetUnfolderBase]: 550/952 cut-off events. [2024-06-28 00:04:15,537 INFO L125 PetriNetUnfolderBase]: For 46446/46446 co-relation queries the response was YES. [2024-06-28 00:04:15,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6810 conditions, 952 events. 550/952 cut-off events. For 46446/46446 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4446 event pairs, 61 based on Foata normal form. 2/952 useless extension candidates. Maximal degree in co-relation 6725. Up to 600 conditions per place. [2024-06-28 00:04:15,551 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 141 selfloop transitions, 88 changer transitions 0/231 dead transitions. [2024-06-28 00:04:15,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 231 transitions, 3138 flow [2024-06-28 00:04:15,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:15,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:15,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 00:04:15,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 00:04:15,553 INFO L175 Difference]: Start difference. First operand has 203 places, 199 transitions, 2305 flow. Second operand 10 states and 130 transitions. [2024-06-28 00:04:15,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 231 transitions, 3138 flow [2024-06-28 00:04:15,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 231 transitions, 2980 flow, removed 21 selfloop flow, removed 11 redundant places. [2024-06-28 00:04:15,699 INFO L231 Difference]: Finished difference. Result has 204 places, 209 transitions, 2517 flow [2024-06-28 00:04:15,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2147, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2517, PETRI_PLACES=204, PETRI_TRANSITIONS=209} [2024-06-28 00:04:15,701 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-28 00:04:15,701 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 209 transitions, 2517 flow [2024-06-28 00:04:15,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:04:15,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:15,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:15,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 00:04:15,701 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:15,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:15,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1005778691, now seen corresponding path program 14 times [2024-06-28 00:04:15,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:15,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574044038] [2024-06-28 00:04:15,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:15,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:16,426 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 00:04:16,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:16,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574044038] [2024-06-28 00:04:16,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574044038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:16,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:16,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:16,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249960803] [2024-06-28 00:04:16,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:16,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:16,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:16,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:16,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:16,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:16,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 209 transitions, 2517 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:04:16,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:16,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:16,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:17,044 INFO L124 PetriNetUnfolderBase]: 546/946 cut-off events. [2024-06-28 00:04:17,045 INFO L125 PetriNetUnfolderBase]: For 46066/46066 co-relation queries the response was YES. [2024-06-28 00:04:17,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6881 conditions, 946 events. 546/946 cut-off events. For 46066/46066 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4390 event pairs, 60 based on Foata normal form. 2/946 useless extension candidates. Maximal degree in co-relation 6794. Up to 597 conditions per place. [2024-06-28 00:04:17,054 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 138 selfloop transitions, 90 changer transitions 0/230 dead transitions. [2024-06-28 00:04:17,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 230 transitions, 3135 flow [2024-06-28 00:04:17,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:17,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:17,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-28 00:04:17,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-28 00:04:17,056 INFO L175 Difference]: Start difference. First operand has 204 places, 209 transitions, 2517 flow. Second operand 10 states and 128 transitions. [2024-06-28 00:04:17,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 230 transitions, 3135 flow [2024-06-28 00:04:17,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 230 transitions, 3028 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 00:04:17,181 INFO L231 Difference]: Finished difference. Result has 209 places, 209 transitions, 2595 flow [2024-06-28 00:04:17,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2410, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2595, PETRI_PLACES=209, PETRI_TRANSITIONS=209} [2024-06-28 00:04:17,182 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-06-28 00:04:17,182 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 209 transitions, 2595 flow [2024-06-28 00:04:17,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:04:17,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:17,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:17,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 00:04:17,183 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:17,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:17,183 INFO L85 PathProgramCache]: Analyzing trace with hash -428892413, now seen corresponding path program 15 times [2024-06-28 00:04:17,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:17,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740762427] [2024-06-28 00:04:17,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:17,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:18,720 INFO 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 00:04:18,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:18,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740762427] [2024-06-28 00:04:18,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740762427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:18,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:18,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:18,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184558900] [2024-06-28 00:04:18,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:18,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:18,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:18,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:18,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:18,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:18,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 209 transitions, 2595 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:04:18,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:18,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:18,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:19,271 INFO L124 PetriNetUnfolderBase]: 542/940 cut-off events. [2024-06-28 00:04:19,271 INFO L125 PetriNetUnfolderBase]: For 45476/45476 co-relation queries the response was YES. [2024-06-28 00:04:19,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6898 conditions, 940 events. 542/940 cut-off events. For 45476/45476 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4409 event pairs, 77 based on Foata normal form. 2/940 useless extension candidates. Maximal degree in co-relation 6809. Up to 886 conditions per place. [2024-06-28 00:04:19,280 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 205 selfloop transitions, 19 changer transitions 0/226 dead transitions. [2024-06-28 00:04:19,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 226 transitions, 3094 flow [2024-06-28 00:04:19,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:19,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:19,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-28 00:04:19,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:04:19,303 INFO L175 Difference]: Start difference. First operand has 209 places, 209 transitions, 2595 flow. Second operand 9 states and 108 transitions. [2024-06-28 00:04:19,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 226 transitions, 3094 flow [2024-06-28 00:04:19,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 226 transitions, 2928 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:19,422 INFO L231 Difference]: Finished difference. Result has 211 places, 209 transitions, 2472 flow [2024-06-28 00:04:19,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2429, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2472, PETRI_PLACES=211, PETRI_TRANSITIONS=209} [2024-06-28 00:04:19,422 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-06-28 00:04:19,422 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 209 transitions, 2472 flow [2024-06-28 00:04:19,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:04:19,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:19,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:19,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 00:04:19,428 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:19,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:19,429 INFO L85 PathProgramCache]: Analyzing trace with hash -425173343, now seen corresponding path program 16 times [2024-06-28 00:04:19,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:19,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373541741] [2024-06-28 00:04:19,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:19,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:20,759 INFO 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 00:04:20,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:20,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373541741] [2024-06-28 00:04:20,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373541741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:20,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:20,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:20,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664999505] [2024-06-28 00:04:20,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:20,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:20,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:20,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:20,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:20,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:20,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 209 transitions, 2472 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:04:20,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:20,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:20,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:21,177 INFO L124 PetriNetUnfolderBase]: 564/976 cut-off events. [2024-06-28 00:04:21,177 INFO L125 PetriNetUnfolderBase]: For 49503/49503 co-relation queries the response was YES. [2024-06-28 00:04:21,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7097 conditions, 976 events. 564/976 cut-off events. For 49503/49503 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4615 event pairs, 83 based on Foata normal form. 2/976 useless extension candidates. Maximal degree in co-relation 7008. Up to 830 conditions per place. [2024-06-28 00:04:21,187 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 189 selfloop transitions, 46 changer transitions 0/237 dead transitions. [2024-06-28 00:04:21,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 237 transitions, 3311 flow [2024-06-28 00:04:21,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:21,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:21,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-28 00:04:21,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 00:04:21,189 INFO L175 Difference]: Start difference. First operand has 211 places, 209 transitions, 2472 flow. Second operand 9 states and 124 transitions. [2024-06-28 00:04:21,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 237 transitions, 3311 flow [2024-06-28 00:04:21,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 237 transitions, 3247 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:21,323 INFO L231 Difference]: Finished difference. Result has 213 places, 216 transitions, 2618 flow [2024-06-28 00:04:21,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2408, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2618, PETRI_PLACES=213, PETRI_TRANSITIONS=216} [2024-06-28 00:04:21,324 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-06-28 00:04:21,324 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 216 transitions, 2618 flow [2024-06-28 00:04:21,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:04:21,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:21,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:21,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 00:04:21,325 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:21,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:21,325 INFO L85 PathProgramCache]: Analyzing trace with hash -425167763, now seen corresponding path program 17 times [2024-06-28 00:04:21,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:21,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272008151] [2024-06-28 00:04:21,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:21,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:22,695 INFO 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 00:04:22,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:22,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272008151] [2024-06-28 00:04:22,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272008151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:22,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:22,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:22,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959853928] [2024-06-28 00:04:22,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:22,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:22,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:22,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:22,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:22,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:22,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 216 transitions, 2618 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:04:22,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:22,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:22,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:23,162 INFO L124 PetriNetUnfolderBase]: 560/970 cut-off events. [2024-06-28 00:04:23,162 INFO L125 PetriNetUnfolderBase]: For 48827/48827 co-relation queries the response was YES. [2024-06-28 00:04:23,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7049 conditions, 970 events. 560/970 cut-off events. For 48827/48827 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4574 event pairs, 82 based on Foata normal form. 2/970 useless extension candidates. Maximal degree in co-relation 6958. Up to 827 conditions per place. [2024-06-28 00:04:23,173 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 187 selfloop transitions, 47 changer transitions 0/236 dead transitions. [2024-06-28 00:04:23,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 236 transitions, 3252 flow [2024-06-28 00:04:23,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:23,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:23,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-28 00:04:23,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43727598566308246 [2024-06-28 00:04:23,175 INFO L175 Difference]: Start difference. First operand has 213 places, 216 transitions, 2618 flow. Second operand 9 states and 122 transitions. [2024-06-28 00:04:23,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 236 transitions, 3252 flow [2024-06-28 00:04:23,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 236 transitions, 3117 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-28 00:04:23,373 INFO L231 Difference]: Finished difference. Result has 217 places, 216 transitions, 2582 flow [2024-06-28 00:04:23,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2483, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2582, PETRI_PLACES=217, PETRI_TRANSITIONS=216} [2024-06-28 00:04:23,373 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-28 00:04:23,373 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 216 transitions, 2582 flow [2024-06-28 00:04:23,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:04:23,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:23,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:23,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 00:04:23,374 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:23,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:23,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1460811391, now seen corresponding path program 18 times [2024-06-28 00:04:23,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:23,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534763670] [2024-06-28 00:04:23,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:23,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:25,176 INFO 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 00:04:25,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:25,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534763670] [2024-06-28 00:04:25,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534763670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:25,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:25,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:25,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14305657] [2024-06-28 00:04:25,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:25,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:25,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:25,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:25,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:25,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:25,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 216 transitions, 2582 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:04:25,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:25,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:25,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:25,809 INFO L124 PetriNetUnfolderBase]: 563/975 cut-off events. [2024-06-28 00:04:25,809 INFO L125 PetriNetUnfolderBase]: For 48915/48915 co-relation queries the response was YES. [2024-06-28 00:04:25,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7036 conditions, 975 events. 563/975 cut-off events. For 48915/48915 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4622 event pairs, 80 based on Foata normal form. 1/974 useless extension candidates. Maximal degree in co-relation 6944. Up to 913 conditions per place. [2024-06-28 00:04:25,819 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 198 selfloop transitions, 30 changer transitions 0/230 dead transitions. [2024-06-28 00:04:25,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 230 transitions, 3086 flow [2024-06-28 00:04:25,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:25,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:25,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-28 00:04:25,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-28 00:04:25,821 INFO L175 Difference]: Start difference. First operand has 217 places, 216 transitions, 2582 flow. Second operand 9 states and 109 transitions. [2024-06-28 00:04:25,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 230 transitions, 3086 flow [2024-06-28 00:04:25,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 230 transitions, 3000 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:25,966 INFO L231 Difference]: Finished difference. Result has 220 places, 218 transitions, 2583 flow [2024-06-28 00:04:25,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2498, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2583, PETRI_PLACES=220, PETRI_TRANSITIONS=218} [2024-06-28 00:04:25,967 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 190 predicate places. [2024-06-28 00:04:25,967 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 218 transitions, 2583 flow [2024-06-28 00:04:25,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:04:25,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:25,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:25,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 00:04:25,967 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:25,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:25,968 INFO L85 PathProgramCache]: Analyzing trace with hash -281282813, now seen corresponding path program 19 times [2024-06-28 00:04:25,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:25,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646092013] [2024-06-28 00:04:25,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:25,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:27,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:27,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:27,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646092013] [2024-06-28 00:04:27,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646092013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:27,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:27,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:27,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486876303] [2024-06-28 00:04:27,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:27,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:27,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:27,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:27,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:27,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:27,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 218 transitions, 2583 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:04:27,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:27,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:27,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:27,789 INFO L124 PetriNetUnfolderBase]: 569/985 cut-off events. [2024-06-28 00:04:27,789 INFO L125 PetriNetUnfolderBase]: For 51785/51785 co-relation queries the response was YES. [2024-06-28 00:04:27,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7162 conditions, 985 events. 569/985 cut-off events. For 51785/51785 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4670 event pairs, 75 based on Foata normal form. 2/985 useless extension candidates. Maximal degree in co-relation 7069. Up to 892 conditions per place. [2024-06-28 00:04:27,801 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 196 selfloop transitions, 38 changer transitions 0/236 dead transitions. [2024-06-28 00:04:27,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 236 transitions, 3236 flow [2024-06-28 00:04:27,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:27,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:27,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-28 00:04:27,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-28 00:04:27,808 INFO L175 Difference]: Start difference. First operand has 220 places, 218 transitions, 2583 flow. Second operand 9 states and 115 transitions. [2024-06-28 00:04:27,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 236 transitions, 3236 flow [2024-06-28 00:04:27,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 236 transitions, 3171 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:27,946 INFO L231 Difference]: Finished difference. Result has 222 places, 220 transitions, 2628 flow [2024-06-28 00:04:27,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2518, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2628, PETRI_PLACES=222, PETRI_TRANSITIONS=220} [2024-06-28 00:04:27,947 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-06-28 00:04:27,947 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 220 transitions, 2628 flow [2024-06-28 00:04:27,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:04:27,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:27,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:27,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 00:04:27,948 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:27,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:27,948 INFO L85 PathProgramCache]: Analyzing trace with hash -281277233, now seen corresponding path program 20 times [2024-06-28 00:04:27,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:27,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948881934] [2024-06-28 00:04:27,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:27,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:27,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:29,175 INFO 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 00:04:29,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:29,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948881934] [2024-06-28 00:04:29,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948881934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:29,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:29,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:29,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159873219] [2024-06-28 00:04:29,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:29,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:29,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:29,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:29,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:29,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:29,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 220 transitions, 2628 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:04:29,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:29,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:29,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:29,612 INFO L124 PetriNetUnfolderBase]: 570/987 cut-off events. [2024-06-28 00:04:29,613 INFO L125 PetriNetUnfolderBase]: For 52259/52259 co-relation queries the response was YES. [2024-06-28 00:04:29,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7186 conditions, 987 events. 570/987 cut-off events. For 52259/52259 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4680 event pairs, 75 based on Foata normal form. 2/987 useless extension candidates. Maximal degree in co-relation 7092. Up to 895 conditions per place. [2024-06-28 00:04:29,623 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 197 selfloop transitions, 39 changer transitions 0/238 dead transitions. [2024-06-28 00:04:29,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 238 transitions, 3291 flow [2024-06-28 00:04:29,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:29,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:29,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-28 00:04:29,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 00:04:29,637 INFO L175 Difference]: Start difference. First operand has 222 places, 220 transitions, 2628 flow. Second operand 9 states and 117 transitions. [2024-06-28 00:04:29,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 238 transitions, 3291 flow [2024-06-28 00:04:29,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 238 transitions, 3099 flow, removed 26 selfloop flow, removed 12 redundant places. [2024-06-28 00:04:29,812 INFO L231 Difference]: Finished difference. Result has 219 places, 222 transitions, 2551 flow [2024-06-28 00:04:29,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2448, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2551, PETRI_PLACES=219, PETRI_TRANSITIONS=222} [2024-06-28 00:04:29,813 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 189 predicate places. [2024-06-28 00:04:29,813 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 222 transitions, 2551 flow [2024-06-28 00:04:29,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 00:04:29,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:29,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:29,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 00:04:29,814 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:29,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:29,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1253397289, now seen corresponding path program 1 times [2024-06-28 00:04:29,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:29,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601884074] [2024-06-28 00:04:29,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:29,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:32,019 INFO 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 00:04:32,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:32,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601884074] [2024-06-28 00:04:32,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601884074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:32,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:32,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:32,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103425022] [2024-06-28 00:04:32,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:32,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:32,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:32,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:32,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:32,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:32,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 222 transitions, 2551 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:32,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:32,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:32,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:32,774 INFO L124 PetriNetUnfolderBase]: 586/1019 cut-off events. [2024-06-28 00:04:32,774 INFO L125 PetriNetUnfolderBase]: For 57210/57210 co-relation queries the response was YES. [2024-06-28 00:04:32,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7272 conditions, 1019 events. 586/1019 cut-off events. For 57210/57210 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4918 event pairs, 110 based on Foata normal form. 2/1019 useless extension candidates. Maximal degree in co-relation 7182. Up to 952 conditions per place. [2024-06-28 00:04:32,785 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 224 selfloop transitions, 21 changer transitions 0/247 dead transitions. [2024-06-28 00:04:32,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 247 transitions, 3251 flow [2024-06-28 00:04:32,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:04:32,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:04:32,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-28 00:04:32,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-28 00:04:32,786 INFO L175 Difference]: Start difference. First operand has 219 places, 222 transitions, 2551 flow. Second operand 12 states and 131 transitions. [2024-06-28 00:04:32,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 247 transitions, 3251 flow [2024-06-28 00:04:32,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 247 transitions, 3180 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:32,960 INFO L231 Difference]: Finished difference. Result has 228 places, 228 transitions, 2592 flow [2024-06-28 00:04:32,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2480, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2592, PETRI_PLACES=228, PETRI_TRANSITIONS=228} [2024-06-28 00:04:32,961 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 198 predicate places. [2024-06-28 00:04:32,961 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 228 transitions, 2592 flow [2024-06-28 00:04:32,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:32,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:32,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:32,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 00:04:32,962 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:32,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:32,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1689310663, now seen corresponding path program 2 times [2024-06-28 00:04:32,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:32,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588654439] [2024-06-28 00:04:32,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:32,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:35,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:35,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:35,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588654439] [2024-06-28 00:04:35,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588654439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:35,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:35,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:35,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984849586] [2024-06-28 00:04:35,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:35,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:35,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:35,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:35,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:35,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:35,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 228 transitions, 2592 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:35,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:35,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:35,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:35,893 INFO L124 PetriNetUnfolderBase]: 593/1032 cut-off events. [2024-06-28 00:04:35,893 INFO L125 PetriNetUnfolderBase]: For 59402/59402 co-relation queries the response was YES. [2024-06-28 00:04:35,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7474 conditions, 1032 events. 593/1032 cut-off events. For 59402/59402 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5026 event pairs, 112 based on Foata normal form. 2/1032 useless extension candidates. Maximal degree in co-relation 7379. Up to 985 conditions per place. [2024-06-28 00:04:35,902 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 224 selfloop transitions, 21 changer transitions 0/247 dead transitions. [2024-06-28 00:04:35,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 247 transitions, 3164 flow [2024-06-28 00:04:35,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:04:35,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:04:35,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-28 00:04:35,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 00:04:35,905 INFO L175 Difference]: Start difference. First operand has 228 places, 228 transitions, 2592 flow. Second operand 12 states and 128 transitions. [2024-06-28 00:04:35,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 247 transitions, 3164 flow [2024-06-28 00:04:36,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 247 transitions, 3121 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:36,095 INFO L231 Difference]: Finished difference. Result has 234 places, 231 transitions, 2637 flow [2024-06-28 00:04:36,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2553, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2637, PETRI_PLACES=234, PETRI_TRANSITIONS=231} [2024-06-28 00:04:36,096 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2024-06-28 00:04:36,096 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 231 transitions, 2637 flow [2024-06-28 00:04:36,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:36,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:36,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:36,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 00:04:36,106 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:36,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:36,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1250535369, now seen corresponding path program 1 times [2024-06-28 00:04:36,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:36,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284966383] [2024-06-28 00:04:36,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:36,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:38,114 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 00:04:38,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:38,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284966383] [2024-06-28 00:04:38,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284966383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:38,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:38,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:38,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351725121] [2024-06-28 00:04:38,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:38,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:38,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:38,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:38,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:38,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:38,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 231 transitions, 2637 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:38,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:38,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:38,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:38,799 INFO L124 PetriNetUnfolderBase]: 615/1068 cut-off events. [2024-06-28 00:04:38,800 INFO L125 PetriNetUnfolderBase]: For 68624/68624 co-relation queries the response was YES. [2024-06-28 00:04:38,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7863 conditions, 1068 events. 615/1068 cut-off events. For 68624/68624 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5223 event pairs, 111 based on Foata normal form. 4/1070 useless extension candidates. Maximal degree in co-relation 7766. Up to 994 conditions per place. [2024-06-28 00:04:38,814 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 225 selfloop transitions, 25 changer transitions 0/252 dead transitions. [2024-06-28 00:04:38,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 252 transitions, 3391 flow [2024-06-28 00:04:38,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:38,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:38,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-28 00:04:38,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-28 00:04:38,816 INFO L175 Difference]: Start difference. First operand has 234 places, 231 transitions, 2637 flow. Second operand 10 states and 117 transitions. [2024-06-28 00:04:38,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 252 transitions, 3391 flow [2024-06-28 00:04:38,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 252 transitions, 3343 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:04:38,970 INFO L231 Difference]: Finished difference. Result has 235 places, 236 transitions, 2739 flow [2024-06-28 00:04:38,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2589, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2739, PETRI_PLACES=235, PETRI_TRANSITIONS=236} [2024-06-28 00:04:38,971 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-06-28 00:04:38,971 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 236 transitions, 2739 flow [2024-06-28 00:04:38,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:38,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:38,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:38,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 00:04:38,972 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:38,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:38,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1250540329, now seen corresponding path program 3 times [2024-06-28 00:04:38,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:38,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432118587] [2024-06-28 00:04:38,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:38,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:41,228 INFO 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 00:04:41,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:41,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432118587] [2024-06-28 00:04:41,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432118587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:41,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:41,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:41,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273038115] [2024-06-28 00:04:41,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:41,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:41,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:41,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:41,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:41,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:41,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 236 transitions, 2739 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:41,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:41,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:41,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:41,839 INFO L124 PetriNetUnfolderBase]: 612/1063 cut-off events. [2024-06-28 00:04:41,840 INFO L125 PetriNetUnfolderBase]: For 64108/64108 co-relation queries the response was YES. [2024-06-28 00:04:41,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7866 conditions, 1063 events. 612/1063 cut-off events. For 64108/64108 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5192 event pairs, 113 based on Foata normal form. 2/1063 useless extension candidates. Maximal degree in co-relation 7768. Up to 1016 conditions per place. [2024-06-28 00:04:41,849 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 227 selfloop transitions, 20 changer transitions 0/249 dead transitions. [2024-06-28 00:04:41,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 249 transitions, 3267 flow [2024-06-28 00:04:41,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:41,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:41,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 00:04:41,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 00:04:41,851 INFO L175 Difference]: Start difference. First operand has 235 places, 236 transitions, 2739 flow. Second operand 10 states and 111 transitions. [2024-06-28 00:04:41,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 249 transitions, 3267 flow [2024-06-28 00:04:42,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 249 transitions, 3180 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:42,014 INFO L231 Difference]: Finished difference. Result has 239 places, 236 transitions, 2696 flow [2024-06-28 00:04:42,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2652, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2696, PETRI_PLACES=239, PETRI_TRANSITIONS=236} [2024-06-28 00:04:42,014 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 209 predicate places. [2024-06-28 00:04:42,014 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 236 transitions, 2696 flow [2024-06-28 00:04:42,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:42,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:42,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:42,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 00:04:42,015 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:42,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:42,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1135244199, now seen corresponding path program 2 times [2024-06-28 00:04:42,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:42,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946980596] [2024-06-28 00:04:42,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:42,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:43,905 INFO 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 00:04:43,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:43,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946980596] [2024-06-28 00:04:43,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946980596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:43,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:43,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:43,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826921546] [2024-06-28 00:04:43,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:43,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:43,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:43,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:43,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:44,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:44,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 236 transitions, 2696 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:44,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:44,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:44,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:44,733 INFO L124 PetriNetUnfolderBase]: 674/1163 cut-off events. [2024-06-28 00:04:44,734 INFO L125 PetriNetUnfolderBase]: For 88972/88972 co-relation queries the response was YES. [2024-06-28 00:04:44,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9090 conditions, 1163 events. 674/1163 cut-off events. For 88972/88972 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5753 event pairs, 121 based on Foata normal form. 4/1165 useless extension candidates. Maximal degree in co-relation 8990. Up to 696 conditions per place. [2024-06-28 00:04:44,756 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 193 selfloop transitions, 77 changer transitions 0/272 dead transitions. [2024-06-28 00:04:44,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 272 transitions, 4016 flow [2024-06-28 00:04:44,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:44,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:44,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-28 00:04:44,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252199413489736 [2024-06-28 00:04:44,757 INFO L175 Difference]: Start difference. First operand has 239 places, 236 transitions, 2696 flow. Second operand 11 states and 145 transitions. [2024-06-28 00:04:44,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 272 transitions, 4016 flow [2024-06-28 00:04:44,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 272 transitions, 3974 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:44,953 INFO L231 Difference]: Finished difference. Result has 242 places, 245 transitions, 3006 flow [2024-06-28 00:04:44,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2654, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3006, PETRI_PLACES=242, PETRI_TRANSITIONS=245} [2024-06-28 00:04:44,954 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2024-06-28 00:04:44,954 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 245 transitions, 3006 flow [2024-06-28 00:04:44,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:44,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:44,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:44,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 00:04:44,955 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:44,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:44,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1807582793, now seen corresponding path program 3 times [2024-06-28 00:04:44,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:44,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020675298] [2024-06-28 00:04:44,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:44,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:46,742 INFO 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 00:04:46,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:46,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020675298] [2024-06-28 00:04:46,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020675298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:46,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:46,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:46,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482181433] [2024-06-28 00:04:46,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:46,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:46,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:46,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:46,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:46,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:46,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 245 transitions, 3006 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:46,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:46,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:46,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:47,525 INFO L124 PetriNetUnfolderBase]: 680/1173 cut-off events. [2024-06-28 00:04:47,525 INFO L125 PetriNetUnfolderBase]: For 89771/89771 co-relation queries the response was YES. [2024-06-28 00:04:47,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9487 conditions, 1173 events. 680/1173 cut-off events. For 89771/89771 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5852 event pairs, 111 based on Foata normal form. 2/1173 useless extension candidates. Maximal degree in co-relation 9386. Up to 859 conditions per place. [2024-06-28 00:04:47,535 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 221 selfloop transitions, 62 changer transitions 0/285 dead transitions. [2024-06-28 00:04:47,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 285 transitions, 4217 flow [2024-06-28 00:04:47,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:47,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:47,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 00:04:47,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-28 00:04:47,541 INFO L175 Difference]: Start difference. First operand has 242 places, 245 transitions, 3006 flow. Second operand 10 states and 127 transitions. [2024-06-28 00:04:47,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 285 transitions, 4217 flow [2024-06-28 00:04:47,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 285 transitions, 4020 flow, removed 76 selfloop flow, removed 5 redundant places. [2024-06-28 00:04:47,723 INFO L231 Difference]: Finished difference. Result has 250 places, 261 transitions, 3275 flow [2024-06-28 00:04:47,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2866, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3275, PETRI_PLACES=250, PETRI_TRANSITIONS=261} [2024-06-28 00:04:47,724 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 220 predicate places. [2024-06-28 00:04:47,724 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 261 transitions, 3275 flow [2024-06-28 00:04:47,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:47,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:47,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:47,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 00:04:47,725 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:47,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:47,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1807576283, now seen corresponding path program 4 times [2024-06-28 00:04:47,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:47,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406698471] [2024-06-28 00:04:47,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:47,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:49,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:49,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:49,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406698471] [2024-06-28 00:04:49,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406698471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:49,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:49,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:49,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271876121] [2024-06-28 00:04:49,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:49,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:49,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:49,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:49,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:49,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:49,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 261 transitions, 3275 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 00:04:49,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:49,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:49,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:50,104 INFO L124 PetriNetUnfolderBase]: 702/1209 cut-off events. [2024-06-28 00:04:50,105 INFO L125 PetriNetUnfolderBase]: For 99251/99251 co-relation queries the response was YES. [2024-06-28 00:04:50,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10004 conditions, 1209 events. 702/1209 cut-off events. For 99251/99251 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6039 event pairs, 141 based on Foata normal form. 4/1211 useless extension candidates. Maximal degree in co-relation 9898. Up to 819 conditions per place. [2024-06-28 00:04:50,118 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 205 selfloop transitions, 79 changer transitions 0/286 dead transitions. [2024-06-28 00:04:50,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 286 transitions, 4406 flow [2024-06-28 00:04:50,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:50,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:50,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-28 00:04:50,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-28 00:04:50,123 INFO L175 Difference]: Start difference. First operand has 250 places, 261 transitions, 3275 flow. Second operand 11 states and 140 transitions. [2024-06-28 00:04:50,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 286 transitions, 4406 flow [2024-06-28 00:04:50,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 286 transitions, 4295 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-06-28 00:04:50,323 INFO L231 Difference]: Finished difference. Result has 258 places, 266 transitions, 3491 flow [2024-06-28 00:04:50,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3176, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3491, PETRI_PLACES=258, PETRI_TRANSITIONS=266} [2024-06-28 00:04:50,325 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 228 predicate places. [2024-06-28 00:04:50,325 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 266 transitions, 3491 flow [2024-06-28 00:04:50,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 00:04:50,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:50,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:50,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 00:04:50,325 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:50,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:50,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1979471527, now seen corresponding path program 5 times [2024-06-28 00:04:50,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:50,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510085140] [2024-06-28 00:04:50,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:50,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:51,816 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 00:04:51,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:51,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510085140] [2024-06-28 00:04:51,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510085140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:51,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:51,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:51,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236026997] [2024-06-28 00:04:51,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:51,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:51,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:51,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:51,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:52,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:52,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 266 transitions, 3491 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:52,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:52,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:52,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:52,616 INFO L124 PetriNetUnfolderBase]: 734/1261 cut-off events. [2024-06-28 00:04:52,617 INFO L125 PetriNetUnfolderBase]: For 110444/110444 co-relation queries the response was YES. [2024-06-28 00:04:52,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10805 conditions, 1261 events. 734/1261 cut-off events. For 110444/110444 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6341 event pairs, 129 based on Foata normal form. 4/1263 useless extension candidates. Maximal degree in co-relation 10697. Up to 1109 conditions per place. [2024-06-28 00:04:52,639 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 245 selfloop transitions, 43 changer transitions 0/290 dead transitions. [2024-06-28 00:04:52,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 290 transitions, 4437 flow [2024-06-28 00:04:52,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:52,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:52,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 00:04:52,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 00:04:52,650 INFO L175 Difference]: Start difference. First operand has 258 places, 266 transitions, 3491 flow. Second operand 10 states and 124 transitions. [2024-06-28 00:04:52,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 290 transitions, 4437 flow [2024-06-28 00:04:52,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 290 transitions, 4277 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:52,996 INFO L231 Difference]: Finished difference. Result has 260 places, 273 transitions, 3617 flow [2024-06-28 00:04:52,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3337, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3617, PETRI_PLACES=260, PETRI_TRANSITIONS=273} [2024-06-28 00:04:52,998 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 230 predicate places. [2024-06-28 00:04:52,998 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 273 transitions, 3617 flow [2024-06-28 00:04:52,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:52,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:52,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:52,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 00:04:52,999 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:52,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:52,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1979478037, now seen corresponding path program 6 times [2024-06-28 00:04:52,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:52,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624478337] [2024-06-28 00:04:52,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:53,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:55,531 INFO 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 00:04:55,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:55,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624478337] [2024-06-28 00:04:55,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624478337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:55,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:55,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:55,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096911648] [2024-06-28 00:04:55,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:55,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:55,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:55,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:55,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:55,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:55,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 273 transitions, 3617 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:55,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:55,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:55,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:56,367 INFO L124 PetriNetUnfolderBase]: 730/1255 cut-off events. [2024-06-28 00:04:56,367 INFO L125 PetriNetUnfolderBase]: For 105519/105519 co-relation queries the response was YES. [2024-06-28 00:04:56,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10626 conditions, 1255 events. 730/1255 cut-off events. For 105519/105519 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6305 event pairs, 129 based on Foata normal form. 2/1255 useless extension candidates. Maximal degree in co-relation 10517. Up to 1108 conditions per place. [2024-06-28 00:04:56,379 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 246 selfloop transitions, 43 changer transitions 0/291 dead transitions. [2024-06-28 00:04:56,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 291 transitions, 4399 flow [2024-06-28 00:04:56,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:56,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:56,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-28 00:04:56,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 00:04:56,381 INFO L175 Difference]: Start difference. First operand has 260 places, 273 transitions, 3617 flow. Second operand 10 states and 125 transitions. [2024-06-28 00:04:56,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 291 transitions, 4399 flow [2024-06-28 00:04:56,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 291 transitions, 4202 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:56,669 INFO L231 Difference]: Finished difference. Result has 263 places, 274 transitions, 3528 flow [2024-06-28 00:04:56,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3420, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3528, PETRI_PLACES=263, PETRI_TRANSITIONS=274} [2024-06-28 00:04:56,670 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 233 predicate places. [2024-06-28 00:04:56,670 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 274 transitions, 3528 flow [2024-06-28 00:04:56,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:56,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:56,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:56,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 00:04:56,671 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:56,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:56,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1979717605, now seen corresponding path program 1 times [2024-06-28 00:04:56,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:56,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404140306] [2024-06-28 00:04:56,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:56,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:58,096 INFO 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 00:04:58,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:58,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404140306] [2024-06-28 00:04:58,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404140306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:58,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:58,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:58,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181350718] [2024-06-28 00:04:58,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:58,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:58,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:58,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:58,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:58,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:58,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 274 transitions, 3528 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:58,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:58,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:58,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:58,566 INFO L124 PetriNetUnfolderBase]: 734/1263 cut-off events. [2024-06-28 00:04:58,566 INFO L125 PetriNetUnfolderBase]: For 107010/107010 co-relation queries the response was YES. [2024-06-28 00:04:58,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10661 conditions, 1263 events. 734/1263 cut-off events. For 107010/107010 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6342 event pairs, 133 based on Foata normal form. 2/1263 useless extension candidates. Maximal degree in co-relation 10550. Up to 1192 conditions per place. [2024-06-28 00:04:58,584 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 257 selfloop transitions, 28 changer transitions 0/287 dead transitions. [2024-06-28 00:04:58,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 287 transitions, 4144 flow [2024-06-28 00:04:58,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:58,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:58,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 00:04:58,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-28 00:04:58,607 INFO L175 Difference]: Start difference. First operand has 263 places, 274 transitions, 3528 flow. Second operand 10 states and 112 transitions. [2024-06-28 00:04:58,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 287 transitions, 4144 flow [2024-06-28 00:04:58,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 287 transitions, 4046 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:58,989 INFO L231 Difference]: Finished difference. Result has 266 places, 275 transitions, 3506 flow [2024-06-28 00:04:58,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3430, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3506, PETRI_PLACES=266, PETRI_TRANSITIONS=275} [2024-06-28 00:04:58,990 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-28 00:04:58,990 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 275 transitions, 3506 flow [2024-06-28 00:04:58,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:58,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:58,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:58,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 00:04:58,991 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:58,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:58,992 INFO L85 PathProgramCache]: Analyzing trace with hash -962938825, now seen corresponding path program 7 times [2024-06-28 00:04:58,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:58,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264188310] [2024-06-28 00:04:58,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:58,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:01,021 INFO 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 00:05:01,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:01,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264188310] [2024-06-28 00:05:01,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264188310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:01,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:01,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:01,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205291138] [2024-06-28 00:05:01,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:01,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:01,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:01,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:01,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:01,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:01,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 275 transitions, 3506 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:01,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:01,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:01,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:01,661 INFO L124 PetriNetUnfolderBase]: 726/1251 cut-off events. [2024-06-28 00:05:01,661 INFO L125 PetriNetUnfolderBase]: For 105665/105665 co-relation queries the response was YES. [2024-06-28 00:05:01,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10305 conditions, 1251 events. 726/1251 cut-off events. For 105665/105665 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6294 event pairs, 132 based on Foata normal form. 4/1253 useless extension candidates. Maximal degree in co-relation 10193. Up to 1162 conditions per place. [2024-06-28 00:05:01,672 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 256 selfloop transitions, 32 changer transitions 0/290 dead transitions. [2024-06-28 00:05:01,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 290 transitions, 4139 flow [2024-06-28 00:05:01,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:01,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:01,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-28 00:05:01,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-28 00:05:01,674 INFO L175 Difference]: Start difference. First operand has 266 places, 275 transitions, 3506 flow. Second operand 10 states and 118 transitions. [2024-06-28 00:05:01,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 290 transitions, 4139 flow [2024-06-28 00:05:01,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 290 transitions, 4070 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:01,912 INFO L231 Difference]: Finished difference. Result has 268 places, 275 transitions, 3507 flow [2024-06-28 00:05:01,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3437, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3507, PETRI_PLACES=268, PETRI_TRANSITIONS=275} [2024-06-28 00:05:01,913 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 238 predicate places. [2024-06-28 00:05:01,913 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 275 transitions, 3507 flow [2024-06-28 00:05:01,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:01,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:01,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:01,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 00:05:01,914 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:01,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:01,914 INFO L85 PathProgramCache]: Analyzing trace with hash -969425575, now seen corresponding path program 8 times [2024-06-28 00:05:01,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:01,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343657609] [2024-06-28 00:05:01,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:01,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:04,001 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 00:05:04,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:04,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343657609] [2024-06-28 00:05:04,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343657609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:04,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:04,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:04,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957920853] [2024-06-28 00:05:04,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:04,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:04,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:04,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:04,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:04,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:04,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 275 transitions, 3507 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 00:05:04,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:04,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:04,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:04,971 INFO L124 PetriNetUnfolderBase]: 762/1309 cut-off events. [2024-06-28 00:05:04,971 INFO L125 PetriNetUnfolderBase]: For 120053/120053 co-relation queries the response was YES. [2024-06-28 00:05:04,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11239 conditions, 1309 events. 762/1309 cut-off events. For 120053/120053 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6641 event pairs, 133 based on Foata normal form. 2/1309 useless extension candidates. Maximal degree in co-relation 11126. Up to 1091 conditions per place. [2024-06-28 00:05:04,984 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 247 selfloop transitions, 56 changer transitions 0/305 dead transitions. [2024-06-28 00:05:04,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 305 transitions, 4819 flow [2024-06-28 00:05:04,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:04,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:04,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-28 00:05:04,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-28 00:05:04,985 INFO L175 Difference]: Start difference. First operand has 268 places, 275 transitions, 3507 flow. Second operand 11 states and 139 transitions. [2024-06-28 00:05:04,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 305 transitions, 4819 flow [2024-06-28 00:05:05,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 305 transitions, 4664 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:05,296 INFO L231 Difference]: Finished difference. Result has 271 places, 283 transitions, 3694 flow [2024-06-28 00:05:05,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3358, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3694, PETRI_PLACES=271, PETRI_TRANSITIONS=283} [2024-06-28 00:05:05,296 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 241 predicate places. [2024-06-28 00:05:05,296 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 283 transitions, 3694 flow [2024-06-28 00:05:05,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 00:05:05,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:05,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:05,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 00:05:05,297 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:05,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:05,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1474376147, now seen corresponding path program 9 times [2024-06-28 00:05:05,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:05,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70947435] [2024-06-28 00:05:05,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:05,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:06,852 INFO 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 00:05:06,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:06,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70947435] [2024-06-28 00:05:06,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70947435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:06,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:06,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:06,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690650086] [2024-06-28 00:05:06,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:06,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:06,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:06,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:06,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:07,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:07,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 283 transitions, 3694 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:07,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:07,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:07,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:07,708 INFO L124 PetriNetUnfolderBase]: 784/1345 cut-off events. [2024-06-28 00:05:07,709 INFO L125 PetriNetUnfolderBase]: For 133666/133666 co-relation queries the response was YES. [2024-06-28 00:05:07,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11787 conditions, 1345 events. 784/1345 cut-off events. For 133666/133666 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6842 event pairs, 138 based on Foata normal form. 4/1347 useless extension candidates. Maximal degree in co-relation 11673. Up to 1108 conditions per place. [2024-06-28 00:05:07,726 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 251 selfloop transitions, 59 changer transitions 0/312 dead transitions. [2024-06-28 00:05:07,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 312 transitions, 5015 flow [2024-06-28 00:05:07,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:07,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:07,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-28 00:05:07,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432258064516129 [2024-06-28 00:05:07,728 INFO L175 Difference]: Start difference. First operand has 271 places, 283 transitions, 3694 flow. Second operand 10 states and 134 transitions. [2024-06-28 00:05:07,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 312 transitions, 5015 flow [2024-06-28 00:05:08,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 312 transitions, 4804 flow, removed 66 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:08,161 INFO L231 Difference]: Finished difference. Result has 274 places, 289 transitions, 3776 flow [2024-06-28 00:05:08,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3527, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3776, PETRI_PLACES=274, PETRI_TRANSITIONS=289} [2024-06-28 00:05:08,162 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 244 predicate places. [2024-06-28 00:05:08,162 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 289 transitions, 3776 flow [2024-06-28 00:05:08,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:08,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:08,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:08,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 00:05:08,163 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:08,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:08,163 INFO L85 PathProgramCache]: Analyzing trace with hash -969605065, now seen corresponding path program 10 times [2024-06-28 00:05:08,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:08,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090102468] [2024-06-28 00:05:08,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:08,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:09,749 INFO 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 00:05:09,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:09,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090102468] [2024-06-28 00:05:09,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090102468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:09,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:09,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:09,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450370739] [2024-06-28 00:05:09,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:09,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:09,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:09,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:09,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:09,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:09,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 289 transitions, 3776 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:09,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:09,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:09,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:10,430 INFO L124 PetriNetUnfolderBase]: 776/1333 cut-off events. [2024-06-28 00:05:10,430 INFO L125 PetriNetUnfolderBase]: For 126950/126950 co-relation queries the response was YES. [2024-06-28 00:05:10,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11324 conditions, 1333 events. 776/1333 cut-off events. For 126950/126950 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6790 event pairs, 126 based on Foata normal form. 4/1335 useless extension candidates. Maximal degree in co-relation 11209. Up to 1104 conditions per place. [2024-06-28 00:05:10,445 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 246 selfloop transitions, 62 changer transitions 0/310 dead transitions. [2024-06-28 00:05:10,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 310 transitions, 4772 flow [2024-06-28 00:05:10,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:10,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:10,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 00:05:10,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-28 00:05:10,456 INFO L175 Difference]: Start difference. First operand has 274 places, 289 transitions, 3776 flow. Second operand 10 states and 131 transitions. [2024-06-28 00:05:10,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 310 transitions, 4772 flow [2024-06-28 00:05:10,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 310 transitions, 4585 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-28 00:05:10,907 INFO L231 Difference]: Finished difference. Result has 278 places, 289 transitions, 3720 flow [2024-06-28 00:05:10,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3589, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3720, PETRI_PLACES=278, PETRI_TRANSITIONS=289} [2024-06-28 00:05:10,908 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 248 predicate places. [2024-06-28 00:05:10,909 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 289 transitions, 3720 flow [2024-06-28 00:05:10,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:10,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:10,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:10,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 00:05:10,909 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:10,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:10,910 INFO L85 PathProgramCache]: Analyzing trace with hash 157949595, now seen corresponding path program 11 times [2024-06-28 00:05:10,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:10,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275081145] [2024-06-28 00:05:10,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:10,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:13,068 INFO 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 00:05:13,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:13,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275081145] [2024-06-28 00:05:13,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275081145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:13,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:13,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:13,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637799566] [2024-06-28 00:05:13,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:13,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:13,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:13,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:13,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:13,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:13,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 289 transitions, 3720 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 00:05:13,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:13,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:13,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:13,994 INFO L124 PetriNetUnfolderBase]: 828/1417 cut-off events. [2024-06-28 00:05:13,994 INFO L125 PetriNetUnfolderBase]: For 150624/150624 co-relation queries the response was YES. [2024-06-28 00:05:14,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12575 conditions, 1417 events. 828/1417 cut-off events. For 150624/150624 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7278 event pairs, 144 based on Foata normal form. 4/1419 useless extension candidates. Maximal degree in co-relation 12459. Up to 1134 conditions per place. [2024-06-28 00:05:14,014 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 261 selfloop transitions, 57 changer transitions 0/320 dead transitions. [2024-06-28 00:05:14,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 320 transitions, 5165 flow [2024-06-28 00:05:14,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:14,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:14,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 00:05:14,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 00:05:14,015 INFO L175 Difference]: Start difference. First operand has 278 places, 289 transitions, 3720 flow. Second operand 11 states and 134 transitions. [2024-06-28 00:05:14,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 320 transitions, 5165 flow [2024-06-28 00:05:14,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 320 transitions, 5020 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:14,514 INFO L231 Difference]: Finished difference. Result has 280 places, 299 transitions, 3968 flow [2024-06-28 00:05:14,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3575, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3968, PETRI_PLACES=280, PETRI_TRANSITIONS=299} [2024-06-28 00:05:14,516 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 250 predicate places. [2024-06-28 00:05:14,516 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 299 transitions, 3968 flow [2024-06-28 00:05:14,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 00:05:14,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:14,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:14,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 00:05:14,517 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:14,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:14,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1584601467, now seen corresponding path program 12 times [2024-06-28 00:05:14,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:14,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618730559] [2024-06-28 00:05:14,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:14,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:16,637 INFO 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 00:05:16,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:16,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618730559] [2024-06-28 00:05:16,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618730559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:16,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:16,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:16,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915415001] [2024-06-28 00:05:16,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:16,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:16,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:16,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:16,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:16,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:16,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 299 transitions, 3968 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 00:05:16,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:16,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:16,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:17,451 INFO L124 PetriNetUnfolderBase]: 834/1427 cut-off events. [2024-06-28 00:05:17,451 INFO L125 PetriNetUnfolderBase]: For 149665/149665 co-relation queries the response was YES. [2024-06-28 00:05:17,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12748 conditions, 1427 events. 834/1427 cut-off events. For 149665/149665 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7323 event pairs, 145 based on Foata normal form. 2/1427 useless extension candidates. Maximal degree in co-relation 12631. Up to 1142 conditions per place. [2024-06-28 00:05:17,469 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 259 selfloop transitions, 62 changer transitions 0/323 dead transitions. [2024-06-28 00:05:17,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 323 transitions, 5238 flow [2024-06-28 00:05:17,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:17,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:17,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 00:05:17,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-28 00:05:17,471 INFO L175 Difference]: Start difference. First operand has 280 places, 299 transitions, 3968 flow. Second operand 11 states and 133 transitions. [2024-06-28 00:05:17,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 323 transitions, 5238 flow [2024-06-28 00:05:17,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 323 transitions, 4977 flow, removed 70 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:17,967 INFO L231 Difference]: Finished difference. Result has 284 places, 303 transitions, 3953 flow [2024-06-28 00:05:17,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3721, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3953, PETRI_PLACES=284, PETRI_TRANSITIONS=303} [2024-06-28 00:05:17,968 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 254 predicate places. [2024-06-28 00:05:17,968 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 303 transitions, 3953 flow [2024-06-28 00:05:17,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 00:05:17,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:17,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:17,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 00:05:17,969 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:17,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:17,969 INFO L85 PathProgramCache]: Analyzing trace with hash -933597211, now seen corresponding path program 2 times [2024-06-28 00:05:17,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:17,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10653843] [2024-06-28 00:05:17,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:17,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:19,041 INFO 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 00:05:19,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:19,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10653843] [2024-06-28 00:05:19,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10653843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:19,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:19,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:19,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131415645] [2024-06-28 00:05:19,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:19,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:19,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:19,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:19,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:19,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:19,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 303 transitions, 3953 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:19,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:19,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:19,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:19,643 INFO L124 PetriNetUnfolderBase]: 838/1435 cut-off events. [2024-06-28 00:05:19,644 INFO L125 PetriNetUnfolderBase]: For 154670/154670 co-relation queries the response was YES. [2024-06-28 00:05:19,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12630 conditions, 1435 events. 838/1435 cut-off events. For 154670/154670 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7394 event pairs, 164 based on Foata normal form. 2/1435 useless extension candidates. Maximal degree in co-relation 12513. Up to 1397 conditions per place. [2024-06-28 00:05:19,670 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 297 selfloop transitions, 16 changer transitions 0/315 dead transitions. [2024-06-28 00:05:19,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 315 transitions, 4619 flow [2024-06-28 00:05:19,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:19,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:19,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-28 00:05:19,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-28 00:05:19,671 INFO L175 Difference]: Start difference. First operand has 284 places, 303 transitions, 3953 flow. Second operand 11 states and 111 transitions. [2024-06-28 00:05:19,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 315 transitions, 4619 flow [2024-06-28 00:05:20,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 315 transitions, 4472 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:20,155 INFO L231 Difference]: Finished difference. Result has 288 places, 304 transitions, 3860 flow [2024-06-28 00:05:20,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3806, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3860, PETRI_PLACES=288, PETRI_TRANSITIONS=304} [2024-06-28 00:05:20,156 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 258 predicate places. [2024-06-28 00:05:20,156 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 304 transitions, 3860 flow [2024-06-28 00:05:20,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:20,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:20,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:20,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 00:05:20,157 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:20,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:20,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1465110763, now seen corresponding path program 13 times [2024-06-28 00:05:20,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:20,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729871628] [2024-06-28 00:05:20,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:20,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:22,236 INFO 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 00:05:22,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:22,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729871628] [2024-06-28 00:05:22,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729871628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:22,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:22,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:22,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928013624] [2024-06-28 00:05:22,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:22,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:22,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:22,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:22,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:22,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:22,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 304 transitions, 3860 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 00:05:22,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:22,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:22,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:23,102 INFO L124 PetriNetUnfolderBase]: 890/1519 cut-off events. [2024-06-28 00:05:23,103 INFO L125 PetriNetUnfolderBase]: For 183587/183587 co-relation queries the response was YES. [2024-06-28 00:05:23,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13781 conditions, 1519 events. 890/1519 cut-off events. For 183587/183587 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7865 event pairs, 164 based on Foata normal form. 4/1521 useless extension candidates. Maximal degree in co-relation 13663. Up to 1367 conditions per place. [2024-06-28 00:05:23,139 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 286 selfloop transitions, 42 changer transitions 0/330 dead transitions. [2024-06-28 00:05:23,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 330 transitions, 5117 flow [2024-06-28 00:05:23,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:23,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:23,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 00:05:23,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 00:05:23,145 INFO L175 Difference]: Start difference. First operand has 288 places, 304 transitions, 3860 flow. Second operand 11 states and 124 transitions. [2024-06-28 00:05:23,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 330 transitions, 5117 flow [2024-06-28 00:05:23,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 330 transitions, 5073 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:23,742 INFO L231 Difference]: Finished difference. Result has 291 places, 314 transitions, 4181 flow [2024-06-28 00:05:23,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3816, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4181, PETRI_PLACES=291, PETRI_TRANSITIONS=314} [2024-06-28 00:05:23,743 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 261 predicate places. [2024-06-28 00:05:23,744 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 314 transitions, 4181 flow [2024-06-28 00:05:23,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 00:05:23,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:23,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:23,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 00:05:23,744 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:23,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:23,745 INFO L85 PathProgramCache]: Analyzing trace with hash -933953401, now seen corresponding path program 3 times [2024-06-28 00:05:23,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:23,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66166115] [2024-06-28 00:05:23,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:23,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:24,947 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 00:05:24,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:24,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66166115] [2024-06-28 00:05:24,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66166115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:24,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:24,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:24,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229744821] [2024-06-28 00:05:24,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:24,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:24,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:24,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:24,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:25,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:25,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 314 transitions, 4181 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:25,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:25,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:25,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:25,613 INFO L124 PetriNetUnfolderBase]: 894/1527 cut-off events. [2024-06-28 00:05:25,614 INFO L125 PetriNetUnfolderBase]: For 183294/183294 co-relation queries the response was YES. [2024-06-28 00:05:25,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14066 conditions, 1527 events. 894/1527 cut-off events. For 183294/183294 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7951 event pairs, 180 based on Foata normal form. 2/1527 useless extension candidates. Maximal degree in co-relation 13946. Up to 1486 conditions per place. [2024-06-28 00:05:25,632 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 303 selfloop transitions, 19 changer transitions 0/324 dead transitions. [2024-06-28 00:05:25,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 324 transitions, 4863 flow [2024-06-28 00:05:25,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:25,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:25,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 00:05:25,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 00:05:25,633 INFO L175 Difference]: Start difference. First operand has 291 places, 314 transitions, 4181 flow. Second operand 10 states and 105 transitions. [2024-06-28 00:05:25,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 324 transitions, 4863 flow [2024-06-28 00:05:26,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 324 transitions, 4732 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:26,275 INFO L231 Difference]: Finished difference. Result has 294 places, 315 transitions, 4113 flow [2024-06-28 00:05:26,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4050, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4113, PETRI_PLACES=294, PETRI_TRANSITIONS=315} [2024-06-28 00:05:26,276 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 264 predicate places. [2024-06-28 00:05:26,276 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 315 transitions, 4113 flow [2024-06-28 00:05:26,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:26,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:26,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:26,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 00:05:26,285 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:26,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:26,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1229172601, now seen corresponding path program 4 times [2024-06-28 00:05:26,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:26,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451074381] [2024-06-28 00:05:26,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:26,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:27,729 INFO 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 00:05:27,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:27,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451074381] [2024-06-28 00:05:27,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451074381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:27,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:27,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:27,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983443219] [2024-06-28 00:05:27,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:27,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:27,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:27,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:27,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:27,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:27,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 315 transitions, 4113 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:27,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:27,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:27,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:28,489 INFO L124 PetriNetUnfolderBase]: 898/1535 cut-off events. [2024-06-28 00:05:28,490 INFO L125 PetriNetUnfolderBase]: For 188375/188375 co-relation queries the response was YES. [2024-06-28 00:05:28,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14076 conditions, 1535 events. 898/1535 cut-off events. For 188375/188375 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 8002 event pairs, 178 based on Foata normal form. 2/1535 useless extension candidates. Maximal degree in co-relation 13954. Up to 1493 conditions per place. [2024-06-28 00:05:28,514 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 305 selfloop transitions, 19 changer transitions 0/326 dead transitions. [2024-06-28 00:05:28,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 326 transitions, 4805 flow [2024-06-28 00:05:28,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:28,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:28,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 00:05:28,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 00:05:28,516 INFO L175 Difference]: Start difference. First operand has 294 places, 315 transitions, 4113 flow. Second operand 10 states and 107 transitions. [2024-06-28 00:05:28,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 326 transitions, 4805 flow [2024-06-28 00:05:29,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 326 transitions, 4754 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:29,198 INFO L231 Difference]: Finished difference. Result has 296 places, 316 transitions, 4126 flow [2024-06-28 00:05:29,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4062, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4126, PETRI_PLACES=296, PETRI_TRANSITIONS=316} [2024-06-28 00:05:29,199 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2024-06-28 00:05:29,199 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 316 transitions, 4126 flow [2024-06-28 00:05:29,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:29,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:29,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:29,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 00:05:29,200 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:29,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:29,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1229181529, now seen corresponding path program 14 times [2024-06-28 00:05:29,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:29,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545449036] [2024-06-28 00:05:29,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:29,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:31,258 INFO 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 00:05:31,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:31,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545449036] [2024-06-28 00:05:31,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545449036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:31,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:31,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:31,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136127774] [2024-06-28 00:05:31,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:31,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:31,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:31,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:31,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:31,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:31,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 316 transitions, 4126 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:31,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:31,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:31,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:32,040 INFO L124 PetriNetUnfolderBase]: 899/1537 cut-off events. [2024-06-28 00:05:32,040 INFO L125 PetriNetUnfolderBase]: For 190036/190036 co-relation queries the response was YES. [2024-06-28 00:05:32,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14095 conditions, 1537 events. 899/1537 cut-off events. For 190036/190036 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8026 event pairs, 172 based on Foata normal form. 2/1537 useless extension candidates. Maximal degree in co-relation 13972. Up to 1485 conditions per place. [2024-06-28 00:05:32,062 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 306 selfloop transitions, 22 changer transitions 0/330 dead transitions. [2024-06-28 00:05:32,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 330 transitions, 4873 flow [2024-06-28 00:05:32,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:32,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:32,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 00:05:32,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-28 00:05:32,064 INFO L175 Difference]: Start difference. First operand has 296 places, 316 transitions, 4126 flow. Second operand 10 states and 112 transitions. [2024-06-28 00:05:32,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 330 transitions, 4873 flow [2024-06-28 00:05:32,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 330 transitions, 4819 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:32,792 INFO L231 Difference]: Finished difference. Result has 298 places, 318 transitions, 4184 flow [2024-06-28 00:05:32,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4072, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4184, PETRI_PLACES=298, PETRI_TRANSITIONS=318} [2024-06-28 00:05:32,793 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 268 predicate places. [2024-06-28 00:05:32,793 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 318 transitions, 4184 flow [2024-06-28 00:05:32,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:32,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:32,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:32,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 00:05:32,794 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:32,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:32,797 INFO L85 PathProgramCache]: Analyzing trace with hash 2097100455, now seen corresponding path program 15 times [2024-06-28 00:05:32,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:32,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013862886] [2024-06-28 00:05:32,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:32,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:34,951 INFO 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 00:05:34,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:34,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013862886] [2024-06-28 00:05:34,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013862886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:34,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:34,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:34,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640687154] [2024-06-28 00:05:34,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:34,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:34,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:34,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:34,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:35,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:35,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 318 transitions, 4184 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 00:05:35,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:35,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:35,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:35,887 INFO L124 PetriNetUnfolderBase]: 891/1525 cut-off events. [2024-06-28 00:05:35,887 INFO L125 PetriNetUnfolderBase]: For 188947/188947 co-relation queries the response was YES. [2024-06-28 00:05:35,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13797 conditions, 1525 events. 891/1525 cut-off events. For 188947/188947 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7961 event pairs, 142 based on Foata normal form. 4/1527 useless extension candidates. Maximal degree in co-relation 13673. Up to 1196 conditions per place. [2024-06-28 00:05:35,904 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 258 selfloop transitions, 78 changer transitions 0/338 dead transitions. [2024-06-28 00:05:35,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 338 transitions, 5436 flow [2024-06-28 00:05:35,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:35,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:35,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 00:05:35,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:05:35,905 INFO L175 Difference]: Start difference. First operand has 298 places, 318 transitions, 4184 flow. Second operand 11 states and 132 transitions. [2024-06-28 00:05:35,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 338 transitions, 5436 flow [2024-06-28 00:05:36,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 338 transitions, 5309 flow, removed 43 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:36,617 INFO L231 Difference]: Finished difference. Result has 301 places, 318 transitions, 4220 flow [2024-06-28 00:05:36,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4057, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4220, PETRI_PLACES=301, PETRI_TRANSITIONS=318} [2024-06-28 00:05:36,618 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 271 predicate places. [2024-06-28 00:05:36,618 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 318 transitions, 4220 flow [2024-06-28 00:05:36,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 00:05:36,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:36,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:36,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 00:05:36,618 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:36,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:36,619 INFO L85 PathProgramCache]: Analyzing trace with hash -933953711, now seen corresponding path program 1 times [2024-06-28 00:05:36,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:36,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053516923] [2024-06-28 00:05:36,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:36,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:38,342 INFO 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 00:05:38,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:38,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053516923] [2024-06-28 00:05:38,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053516923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:38,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:38,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:38,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463570490] [2024-06-28 00:05:38,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:38,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:38,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:38,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:38,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:38,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:38,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 318 transitions, 4220 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:38,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:38,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:38,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:39,012 INFO L124 PetriNetUnfolderBase]: 887/1519 cut-off events. [2024-06-28 00:05:39,013 INFO L125 PetriNetUnfolderBase]: For 183395/183395 co-relation queries the response was YES. [2024-06-28 00:05:39,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13698 conditions, 1519 events. 887/1519 cut-off events. For 183395/183395 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7926 event pairs, 172 based on Foata normal form. 2/1519 useless extension candidates. Maximal degree in co-relation 13573. Up to 1474 conditions per place. [2024-06-28 00:05:39,036 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 301 selfloop transitions, 25 changer transitions 0/328 dead transitions. [2024-06-28 00:05:39,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 328 transitions, 4938 flow [2024-06-28 00:05:39,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:39,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:39,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 00:05:39,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-28 00:05:39,037 INFO L175 Difference]: Start difference. First operand has 301 places, 318 transitions, 4220 flow. Second operand 10 states and 106 transitions. [2024-06-28 00:05:39,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 328 transitions, 4938 flow [2024-06-28 00:05:39,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 328 transitions, 4784 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:39,709 INFO L231 Difference]: Finished difference. Result has 302 places, 320 transitions, 4180 flow [2024-06-28 00:05:39,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4066, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4180, PETRI_PLACES=302, PETRI_TRANSITIONS=320} [2024-06-28 00:05:39,710 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2024-06-28 00:05:39,710 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 320 transitions, 4180 flow [2024-06-28 00:05:39,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:39,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:39,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:39,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 00:05:39,711 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:39,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:39,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1229412169, now seen corresponding path program 16 times [2024-06-28 00:05:39,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:39,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197288757] [2024-06-28 00:05:39,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:39,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:41,569 INFO 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 00:05:41,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:41,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197288757] [2024-06-28 00:05:41,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197288757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:41,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:41,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:41,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492111018] [2024-06-28 00:05:41,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:41,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:41,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:41,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:41,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:41,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:41,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 320 transitions, 4180 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:41,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:41,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:41,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:42,428 INFO L124 PetriNetUnfolderBase]: 883/1513 cut-off events. [2024-06-28 00:05:42,428 INFO L125 PetriNetUnfolderBase]: For 180685/180685 co-relation queries the response was YES. [2024-06-28 00:05:42,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13402 conditions, 1513 events. 883/1513 cut-off events. For 180685/180685 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7896 event pairs, 162 based on Foata normal form. 2/1513 useless extension candidates. Maximal degree in co-relation 13276. Up to 1414 conditions per place. [2024-06-28 00:05:42,447 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 301 selfloop transitions, 32 changer transitions 0/335 dead transitions. [2024-06-28 00:05:42,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 335 transitions, 5100 flow [2024-06-28 00:05:42,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:42,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:42,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-28 00:05:42,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-28 00:05:42,449 INFO L175 Difference]: Start difference. First operand has 302 places, 320 transitions, 4180 flow. Second operand 10 states and 117 transitions. [2024-06-28 00:05:42,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 335 transitions, 5100 flow [2024-06-28 00:05:43,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 335 transitions, 4985 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:43,121 INFO L231 Difference]: Finished difference. Result has 303 places, 321 transitions, 4167 flow [2024-06-28 00:05:43,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4065, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4167, PETRI_PLACES=303, PETRI_TRANSITIONS=321} [2024-06-28 00:05:43,122 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 273 predicate places. [2024-06-28 00:05:43,122 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 321 transitions, 4167 flow [2024-06-28 00:05:43,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:43,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:43,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:43,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 00:05:43,123 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:43,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:43,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1591097145, now seen corresponding path program 5 times [2024-06-28 00:05:43,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:43,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773695372] [2024-06-28 00:05:43,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:43,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:44,591 INFO 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 00:05:44,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:44,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773695372] [2024-06-28 00:05:44,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773695372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:44,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:44,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:44,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437935328] [2024-06-28 00:05:44,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:44,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:44,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:44,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:44,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:44,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:44,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 321 transitions, 4167 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:44,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:44,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:44,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:45,195 INFO L124 PetriNetUnfolderBase]: 887/1521 cut-off events. [2024-06-28 00:05:45,195 INFO L125 PetriNetUnfolderBase]: For 184653/184653 co-relation queries the response was YES. [2024-06-28 00:05:45,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13499 conditions, 1521 events. 887/1521 cut-off events. For 184653/184653 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7951 event pairs, 167 based on Foata normal form. 2/1521 useless extension candidates. Maximal degree in co-relation 13373. Up to 1467 conditions per place. [2024-06-28 00:05:45,220 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 308 selfloop transitions, 23 changer transitions 0/333 dead transitions. [2024-06-28 00:05:45,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 333 transitions, 4879 flow [2024-06-28 00:05:45,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:45,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:45,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 00:05:45,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 00:05:45,222 INFO L175 Difference]: Start difference. First operand has 303 places, 321 transitions, 4167 flow. Second operand 10 states and 109 transitions. [2024-06-28 00:05:45,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 333 transitions, 4879 flow [2024-06-28 00:05:45,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 333 transitions, 4785 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:45,960 INFO L231 Difference]: Finished difference. Result has 306 places, 322 transitions, 4147 flow [2024-06-28 00:05:45,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4073, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4147, PETRI_PLACES=306, PETRI_TRANSITIONS=322} [2024-06-28 00:05:45,961 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 276 predicate places. [2024-06-28 00:05:45,961 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 322 transitions, 4147 flow [2024-06-28 00:05:45,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:45,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:45,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:45,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 00:05:45,962 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:45,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:45,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1591088217, now seen corresponding path program 17 times [2024-06-28 00:05:45,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:45,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351724143] [2024-06-28 00:05:45,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:45,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:48,153 INFO 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 00:05:48,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:48,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351724143] [2024-06-28 00:05:48,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351724143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:48,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:48,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:48,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371410788] [2024-06-28 00:05:48,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:48,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:48,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:48,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:48,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:48,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:48,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 322 transitions, 4147 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:48,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:48,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:48,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:48,869 INFO L124 PetriNetUnfolderBase]: 883/1515 cut-off events. [2024-06-28 00:05:48,869 INFO L125 PetriNetUnfolderBase]: For 184302/184302 co-relation queries the response was YES. [2024-06-28 00:05:48,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13258 conditions, 1515 events. 883/1515 cut-off events. For 184302/184302 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7946 event pairs, 160 based on Foata normal form. 2/1515 useless extension candidates. Maximal degree in co-relation 13131. Up to 1451 conditions per place. [2024-06-28 00:05:48,886 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 308 selfloop transitions, 26 changer transitions 0/336 dead transitions. [2024-06-28 00:05:48,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 336 transitions, 4884 flow [2024-06-28 00:05:48,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:48,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:48,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 00:05:48,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-28 00:05:48,888 INFO L175 Difference]: Start difference. First operand has 306 places, 322 transitions, 4147 flow. Second operand 11 states and 120 transitions. [2024-06-28 00:05:48,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 336 transitions, 4884 flow [2024-06-28 00:05:49,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 336 transitions, 4820 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:49,490 INFO L231 Difference]: Finished difference. Result has 309 places, 323 transitions, 4175 flow [2024-06-28 00:05:49,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4083, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4175, PETRI_PLACES=309, PETRI_TRANSITIONS=323} [2024-06-28 00:05:49,491 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-28 00:05:49,491 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 323 transitions, 4175 flow [2024-06-28 00:05:49,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:49,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:49,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:49,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 00:05:49,492 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:49,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:49,492 INFO L85 PathProgramCache]: Analyzing trace with hash -590993387, now seen corresponding path program 18 times [2024-06-28 00:05:49,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:49,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032556956] [2024-06-28 00:05:49,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:49,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:49,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:51,203 INFO 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 00:05:51,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:51,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032556956] [2024-06-28 00:05:51,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032556956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:51,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:51,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:51,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40586666] [2024-06-28 00:05:51,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:51,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:51,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:51,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:51,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:51,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:51,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 323 transitions, 4175 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:51,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:51,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:51,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:52,199 INFO L124 PetriNetUnfolderBase]: 899/1541 cut-off events. [2024-06-28 00:05:52,199 INFO L125 PetriNetUnfolderBase]: For 196556/196556 co-relation queries the response was YES. [2024-06-28 00:05:52,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13716 conditions, 1541 events. 899/1541 cut-off events. For 196556/196556 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8112 event pairs, 154 based on Foata normal form. 2/1541 useless extension candidates. Maximal degree in co-relation 13588. Up to 1408 conditions per place. [2024-06-28 00:05:52,223 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 305 selfloop transitions, 38 changer transitions 0/345 dead transitions. [2024-06-28 00:05:52,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 345 transitions, 5417 flow [2024-06-28 00:05:52,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:52,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:52,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 00:05:52,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-28 00:05:52,224 INFO L175 Difference]: Start difference. First operand has 309 places, 323 transitions, 4175 flow. Second operand 11 states and 129 transitions. [2024-06-28 00:05:52,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 345 transitions, 5417 flow [2024-06-28 00:05:53,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 345 transitions, 5322 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:53,011 INFO L231 Difference]: Finished difference. Result has 312 places, 328 transitions, 4322 flow [2024-06-28 00:05:53,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4080, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4322, PETRI_PLACES=312, PETRI_TRANSITIONS=328} [2024-06-28 00:05:53,011 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 282 predicate places. [2024-06-28 00:05:53,011 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 328 transitions, 4322 flow [2024-06-28 00:05:53,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:53,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:53,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:53,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 00:05:53,012 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:53,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:53,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1590851067, now seen corresponding path program 19 times [2024-06-28 00:05:53,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:53,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544553870] [2024-06-28 00:05:53,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:53,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:54,608 INFO 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 00:05:54,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:54,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544553870] [2024-06-28 00:05:54,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544553870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:54,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:54,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:54,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835099188] [2024-06-28 00:05:54,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:54,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:54,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:54,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:54,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:54,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:54,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 328 transitions, 4322 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:54,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:54,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:54,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:55,414 INFO L124 PetriNetUnfolderBase]: 891/1529 cut-off events. [2024-06-28 00:05:55,415 INFO L125 PetriNetUnfolderBase]: For 195253/195253 co-relation queries the response was YES. [2024-06-28 00:05:55,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13383 conditions, 1529 events. 891/1529 cut-off events. For 195253/195253 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8039 event pairs, 151 based on Foata normal form. 4/1531 useless extension candidates. Maximal degree in co-relation 13253. Up to 1404 conditions per place. [2024-06-28 00:05:55,433 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 304 selfloop transitions, 38 changer transitions 0/344 dead transitions. [2024-06-28 00:05:55,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 344 transitions, 5253 flow [2024-06-28 00:05:55,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:55,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:55,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 00:05:55,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 00:05:55,442 INFO L175 Difference]: Start difference. First operand has 312 places, 328 transitions, 4322 flow. Second operand 11 states and 127 transitions. [2024-06-28 00:05:55,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 344 transitions, 5253 flow [2024-06-28 00:05:56,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 344 transitions, 4966 flow, removed 75 selfloop flow, removed 10 redundant places. [2024-06-28 00:05:56,185 INFO L231 Difference]: Finished difference. Result has 313 places, 328 transitions, 4118 flow [2024-06-28 00:05:56,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4035, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4118, PETRI_PLACES=313, PETRI_TRANSITIONS=328} [2024-06-28 00:05:56,186 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 283 predicate places. [2024-06-28 00:05:56,186 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 328 transitions, 4118 flow [2024-06-28 00:05:56,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:56,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:56,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:56,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 00:05:56,187 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:56,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:56,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1282506673, now seen corresponding path program 4 times [2024-06-28 00:05:56,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:56,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658012298] [2024-06-28 00:05:56,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:56,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:56,913 INFO 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 00:05:56,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:56,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658012298] [2024-06-28 00:05:56,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658012298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:56,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:56,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:05:56,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829411639] [2024-06-28 00:05:56,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:56,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:05:56,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:56,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:05:56,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:05:56,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:56,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 328 transitions, 4118 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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 00:05:56,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:56,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:56,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:57,572 INFO L124 PetriNetUnfolderBase]: 907/1563 cut-off events. [2024-06-28 00:05:57,573 INFO L125 PetriNetUnfolderBase]: For 199007/199007 co-relation queries the response was YES. [2024-06-28 00:05:57,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13413 conditions, 1563 events. 907/1563 cut-off events. For 199007/199007 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 8333 event pairs, 112 based on Foata normal form. 2/1563 useless extension candidates. Maximal degree in co-relation 13284. Up to 1414 conditions per place. [2024-06-28 00:05:57,596 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 310 selfloop transitions, 48 changer transitions 0/360 dead transitions. [2024-06-28 00:05:57,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 360 transitions, 5138 flow [2024-06-28 00:05:57,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:05:57,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:05:57,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 159 transitions. [2024-06-28 00:05:57,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3663594470046083 [2024-06-28 00:05:57,598 INFO L175 Difference]: Start difference. First operand has 313 places, 328 transitions, 4118 flow. Second operand 14 states and 159 transitions. [2024-06-28 00:05:57,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 360 transitions, 5138 flow [2024-06-28 00:05:58,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 360 transitions, 5025 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 00:05:58,285 INFO L231 Difference]: Finished difference. Result has 318 places, 331 transitions, 4147 flow [2024-06-28 00:05:58,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4005, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4147, PETRI_PLACES=318, PETRI_TRANSITIONS=331} [2024-06-28 00:05:58,286 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 288 predicate places. [2024-06-28 00:05:58,286 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 331 transitions, 4147 flow [2024-06-28 00:05:58,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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 00:05:58,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:58,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:58,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 00:05:58,286 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:58,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:58,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1282446223, now seen corresponding path program 5 times [2024-06-28 00:05:58,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:58,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731492439] [2024-06-28 00:05:58,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:58,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:59,112 INFO 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 00:05:59,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:59,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731492439] [2024-06-28 00:05:59,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731492439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:59,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:59,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:05:59,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713146809] [2024-06-28 00:05:59,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:59,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:05:59,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:59,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:05:59,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:05:59,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:59,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 331 transitions, 4147 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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 00:05:59,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:59,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:59,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:59,937 INFO L124 PetriNetUnfolderBase]: 904/1558 cut-off events. [2024-06-28 00:05:59,937 INFO L125 PetriNetUnfolderBase]: For 195924/195924 co-relation queries the response was YES. [2024-06-28 00:05:59,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13292 conditions, 1558 events. 904/1558 cut-off events. For 195924/195924 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 8293 event pairs, 116 based on Foata normal form. 2/1558 useless extension candidates. Maximal degree in co-relation 13161. Up to 1430 conditions per place. [2024-06-28 00:05:59,956 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 308 selfloop transitions, 46 changer transitions 0/356 dead transitions. [2024-06-28 00:05:59,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 356 transitions, 4947 flow [2024-06-28 00:05:59,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:05:59,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:05:59,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 147 transitions. [2024-06-28 00:05:59,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36476426799007444 [2024-06-28 00:05:59,958 INFO L175 Difference]: Start difference. First operand has 318 places, 331 transitions, 4147 flow. Second operand 13 states and 147 transitions. [2024-06-28 00:05:59,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 356 transitions, 4947 flow [2024-06-28 00:06:00,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 356 transitions, 4857 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-28 00:06:00,615 INFO L231 Difference]: Finished difference. Result has 321 places, 331 transitions, 4153 flow [2024-06-28 00:06:00,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4057, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4153, PETRI_PLACES=321, PETRI_TRANSITIONS=331} [2024-06-28 00:06:00,616 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-06-28 00:06:00,616 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 331 transitions, 4153 flow [2024-06-28 00:06:00,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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 00:06:00,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:00,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:00,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 00:06:00,617 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:00,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:00,617 INFO L85 PathProgramCache]: Analyzing trace with hash -731636627, now seen corresponding path program 6 times [2024-06-28 00:06:00,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:00,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991562043] [2024-06-28 00:06:00,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:00,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:01,218 INFO 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 00:06:01,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:01,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991562043] [2024-06-28 00:06:01,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991562043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:01,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:01,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:06:01,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56005323] [2024-06-28 00:06:01,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:01,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:06:01,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:01,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:06:01,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:06:01,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:06:01,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 331 transitions, 4153 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 00:06:01,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:01,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:06:01,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:01,990 INFO L124 PetriNetUnfolderBase]: 863/1526 cut-off events. [2024-06-28 00:06:01,990 INFO L125 PetriNetUnfolderBase]: For 201447/201450 co-relation queries the response was YES. [2024-06-28 00:06:02,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12893 conditions, 1526 events. 863/1526 cut-off events. For 201447/201450 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8392 event pairs, 88 based on Foata normal form. 5/1528 useless extension candidates. Maximal degree in co-relation 12760. Up to 996 conditions per place. [2024-06-28 00:06:02,006 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 183 selfloop transitions, 47 changer transitions 0/359 dead transitions. [2024-06-28 00:06:02,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 359 transitions, 4901 flow [2024-06-28 00:06:02,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:06:02,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:06:02,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-28 00:06:02,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4220430107526882 [2024-06-28 00:06:02,008 INFO L175 Difference]: Start difference. First operand has 321 places, 331 transitions, 4153 flow. Second operand 12 states and 157 transitions. [2024-06-28 00:06:02,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 359 transitions, 4901 flow [2024-06-28 00:06:02,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 359 transitions, 4809 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-28 00:06:02,711 INFO L231 Difference]: Finished difference. Result has 322 places, 333 transitions, 4189 flow [2024-06-28 00:06:02,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4061, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4189, PETRI_PLACES=322, PETRI_TRANSITIONS=333} [2024-06-28 00:06:02,711 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 292 predicate places. [2024-06-28 00:06:02,711 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 333 transitions, 4189 flow [2024-06-28 00:06:02,712 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 00:06:02,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:02,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:02,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 00:06:02,712 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:02,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:02,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1482193289, now seen corresponding path program 20 times [2024-06-28 00:06:02,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:02,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016302695] [2024-06-28 00:06:02,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:02,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:04,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:04,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:04,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016302695] [2024-06-28 00:06:04,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016302695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:04,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:04,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:04,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227984657] [2024-06-28 00:06:04,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:04,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:04,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:04,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:04,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:04,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:04,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 333 transitions, 4189 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:04,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:04,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:04,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:05,472 INFO L124 PetriNetUnfolderBase]: 955/1645 cut-off events. [2024-06-28 00:06:05,472 INFO L125 PetriNetUnfolderBase]: For 235928/235928 co-relation queries the response was YES. [2024-06-28 00:06:05,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14497 conditions, 1645 events. 955/1645 cut-off events. For 235928/235928 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8870 event pairs, 126 based on Foata normal form. 4/1647 useless extension candidates. Maximal degree in co-relation 14363. Up to 1418 conditions per place. [2024-06-28 00:06:05,492 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 314 selfloop transitions, 53 changer transitions 0/369 dead transitions. [2024-06-28 00:06:05,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 369 transitions, 5520 flow [2024-06-28 00:06:05,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:05,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:05,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 00:06:05,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-06-28 00:06:05,493 INFO L175 Difference]: Start difference. First operand has 322 places, 333 transitions, 4189 flow. Second operand 11 states and 141 transitions. [2024-06-28 00:06:05,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 369 transitions, 5520 flow [2024-06-28 00:06:06,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 369 transitions, 5414 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-28 00:06:06,347 INFO L231 Difference]: Finished difference. Result has 322 places, 340 transitions, 4345 flow [2024-06-28 00:06:06,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4095, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4345, PETRI_PLACES=322, PETRI_TRANSITIONS=340} [2024-06-28 00:06:06,348 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 292 predicate places. [2024-06-28 00:06:06,348 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 340 transitions, 4345 flow [2024-06-28 00:06:06,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:06,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:06,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:06,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 00:06:06,349 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:06,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:06,350 INFO L85 PathProgramCache]: Analyzing trace with hash -782472407, now seen corresponding path program 7 times [2024-06-28 00:06:06,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:06,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588300697] [2024-06-28 00:06:06,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:06,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:08,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:08,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:08,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588300697] [2024-06-28 00:06:08,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588300697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:08,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:08,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:08,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975550661] [2024-06-28 00:06:08,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:08,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:08,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:08,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:08,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:08,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:08,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 340 transitions, 4345 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:08,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:08,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:08,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:09,094 INFO L124 PetriNetUnfolderBase]: 971/1677 cut-off events. [2024-06-28 00:06:09,095 INFO L125 PetriNetUnfolderBase]: For 226084/226084 co-relation queries the response was YES. [2024-06-28 00:06:09,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14779 conditions, 1677 events. 971/1677 cut-off events. For 226084/226084 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 9151 event pairs, 143 based on Foata normal form. 2/1677 useless extension candidates. Maximal degree in co-relation 14649. Up to 1556 conditions per place. [2024-06-28 00:06:09,114 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 332 selfloop transitions, 37 changer transitions 0/371 dead transitions. [2024-06-28 00:06:09,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 371 transitions, 5401 flow [2024-06-28 00:06:09,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:06:09,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:06:09,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 148 transitions. [2024-06-28 00:06:09,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36724565756823824 [2024-06-28 00:06:09,116 INFO L175 Difference]: Start difference. First operand has 322 places, 340 transitions, 4345 flow. Second operand 13 states and 148 transitions. [2024-06-28 00:06:09,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 371 transitions, 5401 flow [2024-06-28 00:06:09,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 371 transitions, 5291 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-28 00:06:09,912 INFO L231 Difference]: Finished difference. Result has 332 places, 346 transitions, 4405 flow [2024-06-28 00:06:09,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4235, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4405, PETRI_PLACES=332, PETRI_TRANSITIONS=346} [2024-06-28 00:06:09,913 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 302 predicate places. [2024-06-28 00:06:09,913 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 346 transitions, 4405 flow [2024-06-28 00:06:09,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:09,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:09,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:09,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 00:06:09,913 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:09,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:09,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1552330193, now seen corresponding path program 21 times [2024-06-28 00:06:09,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:09,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738694239] [2024-06-28 00:06:09,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:09,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:09,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:11,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:11,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:11,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738694239] [2024-06-28 00:06:11,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738694239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:11,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:11,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:11,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829972288] [2024-06-28 00:06:11,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:11,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:11,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:11,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:11,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:11,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:11,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 346 transitions, 4405 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:11,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:11,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:11,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:12,771 INFO L124 PetriNetUnfolderBase]: 993/1713 cut-off events. [2024-06-28 00:06:12,771 INFO L125 PetriNetUnfolderBase]: For 246137/246137 co-relation queries the response was YES. [2024-06-28 00:06:12,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15262 conditions, 1713 events. 993/1713 cut-off events. For 246137/246137 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 9389 event pairs, 145 based on Foata normal form. 4/1715 useless extension candidates. Maximal degree in co-relation 15126. Up to 1588 conditions per place. [2024-06-28 00:06:12,791 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 332 selfloop transitions, 39 changer transitions 0/373 dead transitions. [2024-06-28 00:06:12,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 373 transitions, 5497 flow [2024-06-28 00:06:12,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:12,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:12,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 00:06:12,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 00:06:12,792 INFO L175 Difference]: Start difference. First operand has 332 places, 346 transitions, 4405 flow. Second operand 11 states and 134 transitions. [2024-06-28 00:06:12,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 373 transitions, 5497 flow [2024-06-28 00:06:13,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 373 transitions, 5418 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 00:06:13,630 INFO L231 Difference]: Finished difference. Result has 336 places, 351 transitions, 4508 flow [2024-06-28 00:06:13,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4326, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4508, PETRI_PLACES=336, PETRI_TRANSITIONS=351} [2024-06-28 00:06:13,630 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 306 predicate places. [2024-06-28 00:06:13,630 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 351 transitions, 4508 flow [2024-06-28 00:06:13,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:13,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:13,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:13,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 00:06:13,631 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:13,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:13,631 INFO L85 PathProgramCache]: Analyzing trace with hash -696558077, now seen corresponding path program 8 times [2024-06-28 00:06:13,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:13,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067046527] [2024-06-28 00:06:13,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:13,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:15,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:15,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:15,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067046527] [2024-06-28 00:06:15,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067046527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:15,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:15,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:15,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680274546] [2024-06-28 00:06:15,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:15,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:15,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:15,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:15,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:15,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:15,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 351 transitions, 4508 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:15,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:15,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:15,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:16,699 INFO L124 PetriNetUnfolderBase]: 1000/1726 cut-off events. [2024-06-28 00:06:16,699 INFO L125 PetriNetUnfolderBase]: For 244142/244142 co-relation queries the response was YES. [2024-06-28 00:06:16,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15474 conditions, 1726 events. 1000/1726 cut-off events. For 244142/244142 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9489 event pairs, 154 based on Foata normal form. 2/1726 useless extension candidates. Maximal degree in co-relation 15336. Up to 1625 conditions per place. [2024-06-28 00:06:16,721 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 338 selfloop transitions, 36 changer transitions 0/376 dead transitions. [2024-06-28 00:06:16,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 376 transitions, 5369 flow [2024-06-28 00:06:16,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:06:16,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:06:16,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-28 00:06:16,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-28 00:06:16,722 INFO L175 Difference]: Start difference. First operand has 336 places, 351 transitions, 4508 flow. Second operand 12 states and 139 transitions. [2024-06-28 00:06:16,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 376 transitions, 5369 flow [2024-06-28 00:06:17,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 376 transitions, 5272 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 00:06:17,629 INFO L231 Difference]: Finished difference. Result has 341 places, 354 transitions, 4532 flow [2024-06-28 00:06:17,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4413, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4532, PETRI_PLACES=341, PETRI_TRANSITIONS=354} [2024-06-28 00:06:17,630 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 311 predicate places. [2024-06-28 00:06:17,630 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 354 transitions, 4532 flow [2024-06-28 00:06:17,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:17,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:17,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:17,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 00:06:17,630 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:17,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:17,631 INFO L85 PathProgramCache]: Analyzing trace with hash -692983157, now seen corresponding path program 9 times [2024-06-28 00:06:17,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:17,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278301840] [2024-06-28 00:06:17,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:17,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:19,599 INFO 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 00:06:19,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:19,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278301840] [2024-06-28 00:06:19,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278301840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:19,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:19,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:19,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974653675] [2024-06-28 00:06:19,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:19,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:19,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:19,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:19,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:19,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:19,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 354 transitions, 4532 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:19,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:19,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:19,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:20,474 INFO L124 PetriNetUnfolderBase]: 997/1721 cut-off events. [2024-06-28 00:06:20,475 INFO L125 PetriNetUnfolderBase]: For 241888/241888 co-relation queries the response was YES. [2024-06-28 00:06:20,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15293 conditions, 1721 events. 997/1721 cut-off events. For 241888/241888 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9428 event pairs, 161 based on Foata normal form. 2/1721 useless extension candidates. Maximal degree in co-relation 15154. Up to 1647 conditions per place. [2024-06-28 00:06:20,492 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 343 selfloop transitions, 29 changer transitions 0/374 dead transitions. [2024-06-28 00:06:20,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 374 transitions, 5349 flow [2024-06-28 00:06:20,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:20,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:20,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 00:06:20,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 00:06:20,493 INFO L175 Difference]: Start difference. First operand has 341 places, 354 transitions, 4532 flow. Second operand 11 states and 124 transitions. [2024-06-28 00:06:20,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 374 transitions, 5349 flow [2024-06-28 00:06:21,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 374 transitions, 5263 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:21,367 INFO L231 Difference]: Finished difference. Result has 344 places, 357 transitions, 4552 flow [2024-06-28 00:06:21,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4448, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4552, PETRI_PLACES=344, PETRI_TRANSITIONS=357} [2024-06-28 00:06:21,368 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 314 predicate places. [2024-06-28 00:06:21,368 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 357 transitions, 4552 flow [2024-06-28 00:06:21,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:21,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:21,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:21,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 00:06:21,369 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:21,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:21,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1438884143, now seen corresponding path program 22 times [2024-06-28 00:06:21,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:21,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558489039] [2024-06-28 00:06:21,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:21,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:23,335 INFO 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 00:06:23,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:23,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558489039] [2024-06-28 00:06:23,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558489039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:23,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:23,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:23,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898617519] [2024-06-28 00:06:23,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:23,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:23,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:23,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:23,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:23,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:23,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 357 transitions, 4552 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 00:06:23,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:23,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:23,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:24,513 INFO L124 PetriNetUnfolderBase]: 1029/1773 cut-off events. [2024-06-28 00:06:24,513 INFO L125 PetriNetUnfolderBase]: For 271545/271545 co-relation queries the response was YES. [2024-06-28 00:06:24,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16124 conditions, 1773 events. 1029/1773 cut-off events. For 271545/271545 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9751 event pairs, 114 based on Foata normal form. 4/1775 useless extension candidates. Maximal degree in co-relation 15982. Up to 758 conditions per place. [2024-06-28 00:06:24,534 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 201 selfloop transitions, 194 changer transitions 0/397 dead transitions. [2024-06-28 00:06:24,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 397 transitions, 6352 flow [2024-06-28 00:06:24,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:06:24,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:06:24,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 176 transitions. [2024-06-28 00:06:24,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43672456575682383 [2024-06-28 00:06:24,536 INFO L175 Difference]: Start difference. First operand has 344 places, 357 transitions, 4552 flow. Second operand 13 states and 176 transitions. [2024-06-28 00:06:24,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 397 transitions, 6352 flow [2024-06-28 00:06:25,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 397 transitions, 6313 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 00:06:25,492 INFO L231 Difference]: Finished difference. Result has 350 places, 364 transitions, 5067 flow [2024-06-28 00:06:25,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4515, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5067, PETRI_PLACES=350, PETRI_TRANSITIONS=364} [2024-06-28 00:06:25,493 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 320 predicate places. [2024-06-28 00:06:25,493 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 364 transitions, 5067 flow [2024-06-28 00:06:25,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 00:06:25,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:25,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:25,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 00:06:25,493 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:25,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:25,494 INFO L85 PathProgramCache]: Analyzing trace with hash 269397867, now seen corresponding path program 23 times [2024-06-28 00:06:25,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:25,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592561651] [2024-06-28 00:06:25,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:25,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:27,619 INFO 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 00:06:27,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:27,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592561651] [2024-06-28 00:06:27,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592561651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:27,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:27,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:27,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135707124] [2024-06-28 00:06:27,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:27,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:27,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:27,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:27,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:27,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:27,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 364 transitions, 5067 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 00:06:27,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:27,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:27,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:28,779 INFO L124 PetriNetUnfolderBase]: 1043/1797 cut-off events. [2024-06-28 00:06:28,779 INFO L125 PetriNetUnfolderBase]: For 279466/279466 co-relation queries the response was YES. [2024-06-28 00:06:28,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16961 conditions, 1797 events. 1043/1797 cut-off events. For 279466/279466 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9923 event pairs, 109 based on Foata normal form. 4/1799 useless extension candidates. Maximal degree in co-relation 16818. Up to 769 conditions per place. [2024-06-28 00:06:28,802 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 193 selfloop transitions, 204 changer transitions 0/399 dead transitions. [2024-06-28 00:06:28,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 399 transitions, 6617 flow [2024-06-28 00:06:28,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:06:28,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:06:28,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 180 transitions. [2024-06-28 00:06:28,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147465437788018 [2024-06-28 00:06:28,804 INFO L175 Difference]: Start difference. First operand has 350 places, 364 transitions, 5067 flow. Second operand 14 states and 180 transitions. [2024-06-28 00:06:28,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 399 transitions, 6617 flow [2024-06-28 00:06:29,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 399 transitions, 6404 flow, removed 59 selfloop flow, removed 8 redundant places. [2024-06-28 00:06:29,847 INFO L231 Difference]: Finished difference. Result has 356 places, 367 transitions, 5342 flow [2024-06-28 00:06:29,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4870, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5342, PETRI_PLACES=356, PETRI_TRANSITIONS=367} [2024-06-28 00:06:29,848 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2024-06-28 00:06:29,848 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 367 transitions, 5342 flow [2024-06-28 00:06:29,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 00:06:29,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:29,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:29,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 00:06:29,849 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:29,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:29,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1114375829, now seen corresponding path program 24 times [2024-06-28 00:06:29,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:29,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461291454] [2024-06-28 00:06:29,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:29,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:31,713 INFO 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 00:06:31,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:31,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461291454] [2024-06-28 00:06:31,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461291454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:31,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:31,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:31,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56369010] [2024-06-28 00:06:31,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:31,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:31,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:31,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:31,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:31,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:31,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 367 transitions, 5342 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:31,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:31,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:31,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:33,045 INFO L124 PetriNetUnfolderBase]: 1045/1801 cut-off events. [2024-06-28 00:06:33,045 INFO L125 PetriNetUnfolderBase]: For 277273/277273 co-relation queries the response was YES. [2024-06-28 00:06:33,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17066 conditions, 1801 events. 1045/1801 cut-off events. For 277273/277273 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9959 event pairs, 112 based on Foata normal form. 4/1803 useless extension candidates. Maximal degree in co-relation 16923. Up to 774 conditions per place. [2024-06-28 00:06:33,064 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 189 selfloop transitions, 211 changer transitions 0/402 dead transitions. [2024-06-28 00:06:33,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 402 transitions, 6898 flow [2024-06-28 00:06:33,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:06:33,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:06:33,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 180 transitions. [2024-06-28 00:06:33,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147465437788018 [2024-06-28 00:06:33,066 INFO L175 Difference]: Start difference. First operand has 356 places, 367 transitions, 5342 flow. Second operand 14 states and 180 transitions. [2024-06-28 00:06:33,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 402 transitions, 6898 flow [2024-06-28 00:06:34,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 402 transitions, 6508 flow, removed 25 selfloop flow, removed 10 redundant places. [2024-06-28 00:06:34,014 INFO L231 Difference]: Finished difference. Result has 360 places, 369 transitions, 5415 flow [2024-06-28 00:06:34,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4958, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5415, PETRI_PLACES=360, PETRI_TRANSITIONS=369} [2024-06-28 00:06:34,015 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 330 predicate places. [2024-06-28 00:06:34,015 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 369 transitions, 5415 flow [2024-06-28 00:06:34,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:34,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:34,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:34,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 00:06:34,016 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:34,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:34,016 INFO L85 PathProgramCache]: Analyzing trace with hash -410885015, now seen corresponding path program 10 times [2024-06-28 00:06:34,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:34,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725481788] [2024-06-28 00:06:34,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:34,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:36,123 INFO 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 00:06:36,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:36,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725481788] [2024-06-28 00:06:36,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725481788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:36,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:36,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:36,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278915560] [2024-06-28 00:06:36,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:36,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:36,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:36,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:36,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:36,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:36,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 369 transitions, 5415 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:36,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:36,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:36,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:37,119 INFO L124 PetriNetUnfolderBase]: 1049/1809 cut-off events. [2024-06-28 00:06:37,120 INFO L125 PetriNetUnfolderBase]: For 276949/276949 co-relation queries the response was YES. [2024-06-28 00:06:37,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17157 conditions, 1809 events. 1049/1809 cut-off events. For 276949/276949 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 10020 event pairs, 193 based on Foata normal form. 2/1809 useless extension candidates. Maximal degree in co-relation 17014. Up to 1734 conditions per place. [2024-06-28 00:06:37,142 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 370 selfloop transitions, 23 changer transitions 0/395 dead transitions. [2024-06-28 00:06:37,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 395 transitions, 6509 flow [2024-06-28 00:06:37,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:06:37,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:06:37,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-28 00:06:37,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 00:06:37,144 INFO L175 Difference]: Start difference. First operand has 360 places, 369 transitions, 5415 flow. Second operand 12 states and 136 transitions. [2024-06-28 00:06:37,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 395 transitions, 6509 flow [2024-06-28 00:06:38,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 395 transitions, 6133 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-28 00:06:38,211 INFO L231 Difference]: Finished difference. Result has 364 places, 373 transitions, 5165 flow [2024-06-28 00:06:38,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5040, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5165, PETRI_PLACES=364, PETRI_TRANSITIONS=373} [2024-06-28 00:06:38,212 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 334 predicate places. [2024-06-28 00:06:38,212 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 373 transitions, 5165 flow [2024-06-28 00:06:38,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:38,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:38,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:38,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 00:06:38,213 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:38,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:38,214 INFO L85 PathProgramCache]: Analyzing trace with hash -413563415, now seen corresponding path program 11 times [2024-06-28 00:06:38,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:38,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513048732] [2024-06-28 00:06:38,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:38,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:38,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:40,023 INFO 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 00:06:40,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:40,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513048732] [2024-06-28 00:06:40,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513048732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:40,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:40,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:40,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171084126] [2024-06-28 00:06:40,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:40,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:40,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:40,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:40,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:40,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:40,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 373 transitions, 5165 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:40,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:40,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:40,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:41,203 INFO L124 PetriNetUnfolderBase]: 1056/1822 cut-off events. [2024-06-28 00:06:41,203 INFO L125 PetriNetUnfolderBase]: For 281010/281010 co-relation queries the response was YES. [2024-06-28 00:06:41,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16849 conditions, 1822 events. 1056/1822 cut-off events. For 281010/281010 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 10109 event pairs, 195 based on Foata normal form. 2/1822 useless extension candidates. Maximal degree in co-relation 16703. Up to 1767 conditions per place. [2024-06-28 00:06:41,226 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 370 selfloop transitions, 23 changer transitions 0/395 dead transitions. [2024-06-28 00:06:41,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 395 transitions, 6055 flow [2024-06-28 00:06:41,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:06:41,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:06:41,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-28 00:06:41,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575268817204301 [2024-06-28 00:06:41,228 INFO L175 Difference]: Start difference. First operand has 364 places, 373 transitions, 5165 flow. Second operand 12 states and 133 transitions. [2024-06-28 00:06:41,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 395 transitions, 6055 flow [2024-06-28 00:06:42,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 395 transitions, 5911 flow, removed 29 selfloop flow, removed 11 redundant places. [2024-06-28 00:06:42,297 INFO L231 Difference]: Finished difference. Result has 365 places, 376 transitions, 5127 flow [2024-06-28 00:06:42,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5033, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5127, PETRI_PLACES=365, PETRI_TRANSITIONS=376} [2024-06-28 00:06:42,297 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 335 predicate places. [2024-06-28 00:06:42,298 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 376 transitions, 5127 flow [2024-06-28 00:06:42,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:42,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:42,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:42,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 00:06:42,298 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:42,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:42,299 INFO L85 PathProgramCache]: Analyzing trace with hash -410761945, now seen corresponding path program 25 times [2024-06-28 00:06:42,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:42,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514839694] [2024-06-28 00:06:42,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:42,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:43,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:43,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:43,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514839694] [2024-06-28 00:06:43,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514839694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:43,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:43,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:43,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350677162] [2024-06-28 00:06:43,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:43,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:43,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:43,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:43,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:44,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:44,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 376 transitions, 5127 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:44,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:44,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:44,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:44,783 INFO L124 PetriNetUnfolderBase]: 1058/1826 cut-off events. [2024-06-28 00:06:44,783 INFO L125 PetriNetUnfolderBase]: For 285314/285314 co-relation queries the response was YES. [2024-06-28 00:06:44,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16534 conditions, 1826 events. 1058/1826 cut-off events. For 285314/285314 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 10158 event pairs, 193 based on Foata normal form. 4/1828 useless extension candidates. Maximal degree in co-relation 16391. Up to 1744 conditions per place. [2024-06-28 00:06:44,805 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 369 selfloop transitions, 27 changer transitions 0/398 dead transitions. [2024-06-28 00:06:44,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 398 transitions, 6243 flow [2024-06-28 00:06:44,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:44,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:44,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 00:06:44,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-28 00:06:44,807 INFO L175 Difference]: Start difference. First operand has 365 places, 376 transitions, 5127 flow. Second operand 10 states and 122 transitions. [2024-06-28 00:06:44,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 398 transitions, 6243 flow [2024-06-28 00:06:45,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 398 transitions, 6191 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:45,921 INFO L231 Difference]: Finished difference. Result has 366 places, 379 transitions, 5199 flow [2024-06-28 00:06:45,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5075, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5199, PETRI_PLACES=366, PETRI_TRANSITIONS=379} [2024-06-28 00:06:45,921 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2024-06-28 00:06:45,921 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 379 transitions, 5199 flow [2024-06-28 00:06:45,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:45,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:45,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:45,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 00:06:45,922 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:45,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:45,922 INFO L85 PathProgramCache]: Analyzing trace with hash -410766905, now seen corresponding path program 12 times [2024-06-28 00:06:45,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:45,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589999004] [2024-06-28 00:06:45,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:45,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:45,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:47,849 INFO 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 00:06:47,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:47,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589999004] [2024-06-28 00:06:47,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589999004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:47,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:47,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:47,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366925144] [2024-06-28 00:06:47,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:47,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:47,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:47,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:47,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:47,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:47,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 379 transitions, 5199 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:47,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:47,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:47,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:48,816 INFO L124 PetriNetUnfolderBase]: 1055/1821 cut-off events. [2024-06-28 00:06:48,817 INFO L125 PetriNetUnfolderBase]: For 273204/273204 co-relation queries the response was YES. [2024-06-28 00:06:48,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16432 conditions, 1821 events. 1055/1821 cut-off events. For 273204/273204 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 10117 event pairs, 195 based on Foata normal form. 2/1821 useless extension candidates. Maximal degree in co-relation 16288. Up to 1766 conditions per place. [2024-06-28 00:06:48,840 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 371 selfloop transitions, 22 changer transitions 0/395 dead transitions. [2024-06-28 00:06:48,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 395 transitions, 6027 flow [2024-06-28 00:06:48,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:48,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:48,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 00:06:48,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-28 00:06:48,841 INFO L175 Difference]: Start difference. First operand has 366 places, 379 transitions, 5199 flow. Second operand 10 states and 116 transitions. [2024-06-28 00:06:48,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 395 transitions, 6027 flow [2024-06-28 00:06:50,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 395 transitions, 5788 flow, removed 29 selfloop flow, removed 11 redundant places. [2024-06-28 00:06:50,098 INFO L231 Difference]: Finished difference. Result has 365 places, 379 transitions, 5008 flow [2024-06-28 00:06:50,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4960, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5008, PETRI_PLACES=365, PETRI_TRANSITIONS=379} [2024-06-28 00:06:50,099 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 335 predicate places. [2024-06-28 00:06:50,099 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 379 transitions, 5008 flow [2024-06-28 00:06:50,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:50,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:50,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:50,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 00:06:50,099 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:50,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:50,100 INFO L85 PathProgramCache]: Analyzing trace with hash -123402737, now seen corresponding path program 1 times [2024-06-28 00:06:50,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:50,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3538704] [2024-06-28 00:06:50,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:50,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:51,915 INFO 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 00:06:51,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:51,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3538704] [2024-06-28 00:06:51,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3538704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:51,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:51,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:51,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485686918] [2024-06-28 00:06:51,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:51,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:51,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:51,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:51,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:52,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:52,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 379 transitions, 5008 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:52,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:52,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:52,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:52,805 INFO L124 PetriNetUnfolderBase]: 1051/1814 cut-off events. [2024-06-28 00:06:52,805 INFO L125 PetriNetUnfolderBase]: For 269019/269019 co-relation queries the response was YES. [2024-06-28 00:06:52,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16104 conditions, 1814 events. 1051/1814 cut-off events. For 269019/269019 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 10094 event pairs, 198 based on Foata normal form. 1/1813 useless extension candidates. Maximal degree in co-relation 15960. Up to 1747 conditions per place. [2024-06-28 00:06:52,874 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 358 selfloop transitions, 32 changer transitions 0/392 dead transitions. [2024-06-28 00:06:52,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 392 transitions, 5820 flow [2024-06-28 00:06:52,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:52,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:52,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-28 00:06:52,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-28 00:06:52,875 INFO L175 Difference]: Start difference. First operand has 365 places, 379 transitions, 5008 flow. Second operand 10 states and 118 transitions. [2024-06-28 00:06:52,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 392 transitions, 5820 flow [2024-06-28 00:06:53,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 392 transitions, 5745 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:53,890 INFO L231 Difference]: Finished difference. Result has 366 places, 379 transitions, 5002 flow [2024-06-28 00:06:53,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4933, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5002, PETRI_PLACES=366, PETRI_TRANSITIONS=379} [2024-06-28 00:06:53,891 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2024-06-28 00:06:53,891 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 379 transitions, 5002 flow [2024-06-28 00:06:53,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:53,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:53,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:53,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 00:06:53,891 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:53,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:53,892 INFO L85 PathProgramCache]: Analyzing trace with hash -123156473, now seen corresponding path program 6 times [2024-06-28 00:06:53,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:53,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21083717] [2024-06-28 00:06:53,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:53,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:55,377 INFO 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 00:06:55,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:55,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21083717] [2024-06-28 00:06:55,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21083717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:55,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:55,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:55,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703298350] [2024-06-28 00:06:55,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:55,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:55,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:55,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:55,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:55,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:55,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 379 transitions, 5002 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:55,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:55,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:55,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:56,169 INFO L124 PetriNetUnfolderBase]: 1048/1809 cut-off events. [2024-06-28 00:06:56,169 INFO L125 PetriNetUnfolderBase]: For 269621/269621 co-relation queries the response was YES. [2024-06-28 00:06:56,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15924 conditions, 1809 events. 1048/1809 cut-off events. For 269621/269621 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 10084 event pairs, 180 based on Foata normal form. 2/1809 useless extension candidates. Maximal degree in co-relation 15779. Up to 1718 conditions per place. [2024-06-28 00:06:56,191 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 359 selfloop transitions, 33 changer transitions 0/394 dead transitions. [2024-06-28 00:06:56,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 394 transitions, 5826 flow [2024-06-28 00:06:56,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:06:56,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:06:56,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-28 00:06:56,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-28 00:06:56,192 INFO L175 Difference]: Start difference. First operand has 366 places, 379 transitions, 5002 flow. Second operand 9 states and 111 transitions. [2024-06-28 00:06:56,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 394 transitions, 5826 flow [2024-06-28 00:06:57,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 394 transitions, 5721 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:57,656 INFO L231 Difference]: Finished difference. Result has 366 places, 379 transitions, 4967 flow [2024-06-28 00:06:57,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4897, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4967, PETRI_PLACES=366, PETRI_TRANSITIONS=379} [2024-06-28 00:06:57,657 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2024-06-28 00:06:57,657 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 379 transitions, 4967 flow [2024-06-28 00:06:57,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:57,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:57,657 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 00:06:57,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 00:06:57,658 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:57,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:57,658 INFO L85 PathProgramCache]: Analyzing trace with hash 827149990, now seen corresponding path program 1 times [2024-06-28 00:06:57,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:57,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707734464] [2024-06-28 00:06:57,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:57,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:59,808 INFO 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 00:06:59,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:59,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707734464] [2024-06-28 00:06:59,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707734464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:59,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:59,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:59,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773273277] [2024-06-28 00:06:59,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:59,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:59,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:59,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:59,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:59,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:59,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 379 transitions, 4967 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:59,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:59,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:59,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:00,863 INFO L124 PetriNetUnfolderBase]: 1059/1831 cut-off events. [2024-06-28 00:07:00,863 INFO L125 PetriNetUnfolderBase]: For 284886/284886 co-relation queries the response was YES. [2024-06-28 00:07:00,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16247 conditions, 1831 events. 1059/1831 cut-off events. For 284886/284886 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 10228 event pairs, 239 based on Foata normal form. 2/1831 useless extension candidates. Maximal degree in co-relation 16101. Up to 1722 conditions per place. [2024-06-28 00:07:00,885 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 376 selfloop transitions, 25 changer transitions 0/403 dead transitions. [2024-06-28 00:07:00,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 403 transitions, 6048 flow [2024-06-28 00:07:00,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:07:00,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:07:00,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 143 transitions. [2024-06-28 00:07:00,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:07:00,886 INFO L175 Difference]: Start difference. First operand has 366 places, 379 transitions, 4967 flow. Second operand 13 states and 143 transitions. [2024-06-28 00:07:00,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 403 transitions, 6048 flow [2024-06-28 00:07:02,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 403 transitions, 5932 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 00:07:02,121 INFO L231 Difference]: Finished difference. Result has 372 places, 382 transitions, 4942 flow [2024-06-28 00:07:02,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4851, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4942, PETRI_PLACES=372, PETRI_TRANSITIONS=382} [2024-06-28 00:07:02,122 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 342 predicate places. [2024-06-28 00:07:02,122 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 382 transitions, 4942 flow [2024-06-28 00:07:02,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:02,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:02,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:02,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 00:07:02,122 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:02,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:02,123 INFO L85 PathProgramCache]: Analyzing trace with hash 52675374, now seen corresponding path program 2 times [2024-06-28 00:07:02,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:02,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302403882] [2024-06-28 00:07:02,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:02,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:04,374 INFO 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 00:07:04,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:04,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302403882] [2024-06-28 00:07:04,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302403882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:04,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:04,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:04,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153275593] [2024-06-28 00:07:04,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:04,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:04,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:04,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:04,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:04,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:04,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 382 transitions, 4942 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:04,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:04,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:04,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:05,621 INFO L124 PetriNetUnfolderBase]: 1066/1844 cut-off events. [2024-06-28 00:07:05,621 INFO L125 PetriNetUnfolderBase]: For 289712/289712 co-relation queries the response was YES. [2024-06-28 00:07:05,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16328 conditions, 1844 events. 1066/1844 cut-off events. For 289712/289712 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10318 event pairs, 247 based on Foata normal form. 2/1844 useless extension candidates. Maximal degree in co-relation 16179. Up to 1783 conditions per place. [2024-06-28 00:07:05,642 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 375 selfloop transitions, 25 changer transitions 0/402 dead transitions. [2024-06-28 00:07:05,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 402 transitions, 5829 flow [2024-06-28 00:07:05,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:07:05,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:07:05,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 139 transitions. [2024-06-28 00:07:05,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34491315136476425 [2024-06-28 00:07:05,644 INFO L175 Difference]: Start difference. First operand has 372 places, 382 transitions, 4942 flow. Second operand 13 states and 139 transitions. [2024-06-28 00:07:05,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 402 transitions, 5829 flow [2024-06-28 00:07:07,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 402 transitions, 5775 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 00:07:07,088 INFO L231 Difference]: Finished difference. Result has 378 places, 385 transitions, 4987 flow [2024-06-28 00:07:07,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4898, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4987, PETRI_PLACES=378, PETRI_TRANSITIONS=385} [2024-06-28 00:07:07,088 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 348 predicate places. [2024-06-28 00:07:07,088 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 385 transitions, 4987 flow [2024-06-28 00:07:07,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:07,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:07,089 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 00:07:07,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 00:07:07,089 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:07,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:07,089 INFO L85 PathProgramCache]: Analyzing trace with hash -198735406, now seen corresponding path program 3 times [2024-06-28 00:07:07,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:07,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362382782] [2024-06-28 00:07:07,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:07,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:09,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:09,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:09,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362382782] [2024-06-28 00:07:09,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362382782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:09,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:09,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:07:09,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814164387] [2024-06-28 00:07:09,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:09,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:07:09,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:09,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:07:09,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:07:09,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:09,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 385 transitions, 4987 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:09,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:09,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:09,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:10,791 INFO L124 PetriNetUnfolderBase]: 1070/1852 cut-off events. [2024-06-28 00:07:10,791 INFO L125 PetriNetUnfolderBase]: For 295285/295285 co-relation queries the response was YES. [2024-06-28 00:07:10,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16382 conditions, 1852 events. 1070/1852 cut-off events. For 295285/295285 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10390 event pairs, 245 based on Foata normal form. 2/1852 useless extension candidates. Maximal degree in co-relation 16231. Up to 1777 conditions per place. [2024-06-28 00:07:10,814 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 376 selfloop transitions, 26 changer transitions 0/404 dead transitions. [2024-06-28 00:07:10,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 404 transitions, 5845 flow [2024-06-28 00:07:10,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:07:10,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:07:10,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 147 transitions. [2024-06-28 00:07:10,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 00:07:10,816 INFO L175 Difference]: Start difference. First operand has 378 places, 385 transitions, 4987 flow. Second operand 14 states and 147 transitions. [2024-06-28 00:07:10,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 404 transitions, 5845 flow [2024-06-28 00:07:12,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 404 transitions, 5794 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 00:07:12,140 INFO L231 Difference]: Finished difference. Result has 382 places, 386 transitions, 5002 flow [2024-06-28 00:07:12,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4936, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5002, PETRI_PLACES=382, PETRI_TRANSITIONS=386} [2024-06-28 00:07:12,141 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 352 predicate places. [2024-06-28 00:07:12,141 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 386 transitions, 5002 flow [2024-06-28 00:07:12,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:12,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:12,141 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 00:07:12,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 00:07:12,142 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:12,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:12,142 INFO L85 PathProgramCache]: Analyzing trace with hash 37816268, now seen corresponding path program 4 times [2024-06-28 00:07:12,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:12,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312184579] [2024-06-28 00:07:12,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:12,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:14,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:14,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:14,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312184579] [2024-06-28 00:07:14,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312184579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:14,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:14,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:07:14,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143424056] [2024-06-28 00:07:14,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:14,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:07:14,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:14,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:07:14,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:07:14,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:14,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 386 transitions, 5002 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:14,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:14,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:14,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:15,395 INFO L124 PetriNetUnfolderBase]: 1077/1865 cut-off events. [2024-06-28 00:07:15,396 INFO L125 PetriNetUnfolderBase]: For 301041/301041 co-relation queries the response was YES. [2024-06-28 00:07:15,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16524 conditions, 1865 events. 1077/1865 cut-off events. For 301041/301041 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10507 event pairs, 249 based on Foata normal form. 2/1865 useless extension candidates. Maximal degree in co-relation 16372. Up to 1803 conditions per place. [2024-06-28 00:07:15,420 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 375 selfloop transitions, 26 changer transitions 0/403 dead transitions. [2024-06-28 00:07:15,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 403 transitions, 5881 flow [2024-06-28 00:07:15,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:07:15,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:07:15,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-28 00:07:15,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 00:07:15,422 INFO L175 Difference]: Start difference. First operand has 382 places, 386 transitions, 5002 flow. Second operand 12 states and 128 transitions. [2024-06-28 00:07:15,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 403 transitions, 5881 flow [2024-06-28 00:07:16,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 403 transitions, 5826 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 00:07:16,766 INFO L231 Difference]: Finished difference. Result has 383 places, 389 transitions, 5046 flow [2024-06-28 00:07:16,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4951, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5046, PETRI_PLACES=383, PETRI_TRANSITIONS=389} [2024-06-28 00:07:16,766 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 353 predicate places. [2024-06-28 00:07:16,766 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 389 transitions, 5046 flow [2024-06-28 00:07:16,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:16,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:16,767 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 00:07:16,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 00:07:16,767 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:16,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:16,767 INFO L85 PathProgramCache]: Analyzing trace with hash 915715750, now seen corresponding path program 5 times [2024-06-28 00:07:16,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:16,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239996527] [2024-06-28 00:07:16,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:16,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:18,474 INFO 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 00:07:18,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:18,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239996527] [2024-06-28 00:07:18,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239996527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:18,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:18,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:18,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009482284] [2024-06-28 00:07:18,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:18,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:18,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:18,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:18,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:18,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:18,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 389 transitions, 5046 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:18,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:18,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:18,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:19,383 INFO L124 PetriNetUnfolderBase]: 1081/1873 cut-off events. [2024-06-28 00:07:19,384 INFO L125 PetriNetUnfolderBase]: For 306841/306841 co-relation queries the response was YES. [2024-06-28 00:07:19,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16616 conditions, 1873 events. 1081/1873 cut-off events. For 306841/306841 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10559 event pairs, 247 based on Foata normal form. 2/1873 useless extension candidates. Maximal degree in co-relation 16463. Up to 1788 conditions per place. [2024-06-28 00:07:19,407 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 376 selfloop transitions, 28 changer transitions 0/406 dead transitions. [2024-06-28 00:07:19,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 406 transitions, 6110 flow [2024-06-28 00:07:19,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:19,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:19,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 00:07:19,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 00:07:19,409 INFO L175 Difference]: Start difference. First operand has 383 places, 389 transitions, 5046 flow. Second operand 11 states and 124 transitions. [2024-06-28 00:07:19,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 406 transitions, 6110 flow [2024-06-28 00:07:21,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 406 transitions, 6056 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 00:07:21,055 INFO L231 Difference]: Finished difference. Result has 385 places, 390 transitions, 5064 flow [2024-06-28 00:07:21,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4992, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5064, PETRI_PLACES=385, PETRI_TRANSITIONS=390} [2024-06-28 00:07:21,056 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 355 predicate places. [2024-06-28 00:07:21,056 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 390 transitions, 5064 flow [2024-06-28 00:07:21,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:21,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:21,056 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 00:07:21,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 00:07:21,056 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:21,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:21,057 INFO L85 PathProgramCache]: Analyzing trace with hash 915863620, now seen corresponding path program 6 times [2024-06-28 00:07:21,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:21,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768814019] [2024-06-28 00:07:21,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:21,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:23,340 INFO 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 00:07:23,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:23,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768814019] [2024-06-28 00:07:23,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768814019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:23,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:23,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:23,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376160938] [2024-06-28 00:07:23,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:23,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:23,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:23,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:23,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:23,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:23,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 390 transitions, 5064 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:23,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:23,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:23,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:24,269 INFO L124 PetriNetUnfolderBase]: 1078/1868 cut-off events. [2024-06-28 00:07:24,269 INFO L125 PetriNetUnfolderBase]: For 302123/302123 co-relation queries the response was YES. [2024-06-28 00:07:24,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16452 conditions, 1868 events. 1078/1868 cut-off events. For 302123/302123 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10530 event pairs, 248 based on Foata normal form. 2/1868 useless extension candidates. Maximal degree in co-relation 16298. Up to 1823 conditions per place. [2024-06-28 00:07:24,288 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 383 selfloop transitions, 19 changer transitions 0/404 dead transitions. [2024-06-28 00:07:24,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 404 transitions, 5904 flow [2024-06-28 00:07:24,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:24,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:24,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 00:07:24,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 00:07:24,290 INFO L175 Difference]: Start difference. First operand has 385 places, 390 transitions, 5064 flow. Second operand 11 states and 118 transitions. [2024-06-28 00:07:24,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 404 transitions, 5904 flow [2024-06-28 00:07:25,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 404 transitions, 5830 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 00:07:25,593 INFO L231 Difference]: Finished difference. Result has 387 places, 390 transitions, 5032 flow [2024-06-28 00:07:25,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4990, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5032, PETRI_PLACES=387, PETRI_TRANSITIONS=390} [2024-06-28 00:07:25,594 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 357 predicate places. [2024-06-28 00:07:25,594 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 390 transitions, 5032 flow [2024-06-28 00:07:25,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:25,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:25,594 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 00:07:25,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 00:07:25,594 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:25,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:25,595 INFO L85 PathProgramCache]: Analyzing trace with hash 915869355, now seen corresponding path program 1 times [2024-06-28 00:07:25,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:25,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059491144] [2024-06-28 00:07:25,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:25,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:28,456 INFO 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 00:07:28,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:28,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059491144] [2024-06-28 00:07:28,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059491144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:28,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:28,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:28,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428689263] [2024-06-28 00:07:28,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:28,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:28,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:28,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:28,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:28,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:28,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 390 transitions, 5032 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:28,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:28,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:28,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:29,637 INFO L124 PetriNetUnfolderBase]: 1074/1862 cut-off events. [2024-06-28 00:07:29,637 INFO L125 PetriNetUnfolderBase]: For 296757/296757 co-relation queries the response was YES. [2024-06-28 00:07:29,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16214 conditions, 1862 events. 1074/1862 cut-off events. For 296757/296757 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10516 event pairs, 245 based on Foata normal form. 2/1862 useless extension candidates. Maximal degree in co-relation 16059. Up to 1782 conditions per place. [2024-06-28 00:07:29,662 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 372 selfloop transitions, 31 changer transitions 0/405 dead transitions. [2024-06-28 00:07:29,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 405 transitions, 5880 flow [2024-06-28 00:07:29,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:07:29,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:07:29,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-28 00:07:29,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-28 00:07:29,664 INFO L175 Difference]: Start difference. First operand has 387 places, 390 transitions, 5032 flow. Second operand 12 states and 130 transitions. [2024-06-28 00:07:29,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 405 transitions, 5880 flow [2024-06-28 00:07:31,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 405 transitions, 5806 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-28 00:07:31,139 INFO L231 Difference]: Finished difference. Result has 388 places, 390 transitions, 5025 flow [2024-06-28 00:07:31,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4958, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5025, PETRI_PLACES=388, PETRI_TRANSITIONS=390} [2024-06-28 00:07:31,140 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 358 predicate places. [2024-06-28 00:07:31,140 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 390 transitions, 5025 flow [2024-06-28 00:07:31,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:31,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:31,140 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 00:07:31,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 00:07:31,141 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:31,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:31,141 INFO L85 PathProgramCache]: Analyzing trace with hash 194922594, now seen corresponding path program 7 times [2024-06-28 00:07:31,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:31,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717909086] [2024-06-28 00:07:31,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:31,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:33,052 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 00:07:33,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:33,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717909086] [2024-06-28 00:07:33,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717909086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:33,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:33,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:33,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092750149] [2024-06-28 00:07:33,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:33,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:33,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:33,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:33,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:33,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:33,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 390 transitions, 5025 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:33,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:33,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:33,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:34,071 INFO L124 PetriNetUnfolderBase]: 1081/1875 cut-off events. [2024-06-28 00:07:34,071 INFO L125 PetriNetUnfolderBase]: For 302323/302323 co-relation queries the response was YES. [2024-06-28 00:07:34,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16342 conditions, 1875 events. 1081/1875 cut-off events. For 302323/302323 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10597 event pairs, 248 based on Foata normal form. 2/1875 useless extension candidates. Maximal degree in co-relation 16186. Up to 1658 conditions per place. [2024-06-28 00:07:34,095 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 333 selfloop transitions, 74 changer transitions 0/409 dead transitions. [2024-06-28 00:07:34,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 409 transitions, 5960 flow [2024-06-28 00:07:34,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:34,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:34,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 00:07:34,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 00:07:34,097 INFO L175 Difference]: Start difference. First operand has 388 places, 390 transitions, 5025 flow. Second operand 11 states and 135 transitions. [2024-06-28 00:07:34,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 409 transitions, 5960 flow [2024-06-28 00:07:35,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 409 transitions, 5882 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 00:07:35,524 INFO L231 Difference]: Finished difference. Result has 389 places, 394 transitions, 5155 flow [2024-06-28 00:07:35,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4947, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5155, PETRI_PLACES=389, PETRI_TRANSITIONS=394} [2024-06-28 00:07:35,525 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 359 predicate places. [2024-06-28 00:07:35,525 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 394 transitions, 5155 flow [2024-06-28 00:07:35,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:35,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:35,525 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 00:07:35,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 00:07:35,525 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:35,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:35,526 INFO L85 PathProgramCache]: Analyzing trace with hash 194928329, now seen corresponding path program 2 times [2024-06-28 00:07:35,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:35,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101152405] [2024-06-28 00:07:35,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:35,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:38,669 INFO 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 00:07:38,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:38,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101152405] [2024-06-28 00:07:38,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101152405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:38,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:38,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:38,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202809776] [2024-06-28 00:07:38,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:38,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:38,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:38,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:38,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:38,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:38,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 394 transitions, 5155 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:38,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:38,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:38,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:39,754 INFO L124 PetriNetUnfolderBase]: 1077/1869 cut-off events. [2024-06-28 00:07:39,755 INFO L125 PetriNetUnfolderBase]: For 298613/298613 co-relation queries the response was YES. [2024-06-28 00:07:39,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16249 conditions, 1869 events. 1077/1869 cut-off events. For 298613/298613 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10631 event pairs, 207 based on Foata normal form. 2/1869 useless extension candidates. Maximal degree in co-relation 16091. Up to 1501 conditions per place. [2024-06-28 00:07:39,774 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 327 selfloop transitions, 91 changer transitions 0/420 dead transitions. [2024-06-28 00:07:39,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 420 transitions, 6393 flow [2024-06-28 00:07:39,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:39,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:39,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-28 00:07:39,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-28 00:07:39,776 INFO L175 Difference]: Start difference. First operand has 389 places, 394 transitions, 5155 flow. Second operand 11 states and 139 transitions. [2024-06-28 00:07:39,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 420 transitions, 6393 flow [2024-06-28 00:07:41,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 420 transitions, 6201 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 00:07:41,267 INFO L231 Difference]: Finished difference. Result has 392 places, 394 transitions, 5164 flow [2024-06-28 00:07:41,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4977, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5164, PETRI_PLACES=392, PETRI_TRANSITIONS=394} [2024-06-28 00:07:41,268 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 362 predicate places. [2024-06-28 00:07:41,268 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 394 transitions, 5164 flow [2024-06-28 00:07:41,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:41,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:41,268 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 00:07:41,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 00:07:41,269 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:41,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:41,269 INFO L85 PathProgramCache]: Analyzing trace with hash -827266827, now seen corresponding path program 3 times [2024-06-28 00:07:41,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:41,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503649891] [2024-06-28 00:07:41,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:41,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:43,527 INFO 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 00:07:43,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:43,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503649891] [2024-06-28 00:07:43,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503649891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:43,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:43,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:43,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837654514] [2024-06-28 00:07:43,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:43,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:43,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:43,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:43,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:43,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:43,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 394 transitions, 5164 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:43,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:43,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:43,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:44,638 INFO L124 PetriNetUnfolderBase]: 1083/1879 cut-off events. [2024-06-28 00:07:44,638 INFO L125 PetriNetUnfolderBase]: For 302992/302992 co-relation queries the response was YES. [2024-06-28 00:07:44,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16413 conditions, 1879 events. 1083/1879 cut-off events. For 302992/302992 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 10655 event pairs, 223 based on Foata normal form. 2/1879 useless extension candidates. Maximal degree in co-relation 16254. Up to 1217 conditions per place. [2024-06-28 00:07:44,663 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 265 selfloop transitions, 149 changer transitions 0/416 dead transitions. [2024-06-28 00:07:44,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 416 transitions, 6514 flow [2024-06-28 00:07:44,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:07:44,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:07:44,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-28 00:07:44,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40053763440860213 [2024-06-28 00:07:44,665 INFO L175 Difference]: Start difference. First operand has 392 places, 394 transitions, 5164 flow. Second operand 12 states and 149 transitions. [2024-06-28 00:07:44,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 416 transitions, 6514 flow [2024-06-28 00:07:46,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 416 transitions, 6333 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:07:46,055 INFO L231 Difference]: Finished difference. Result has 396 places, 396 transitions, 5322 flow [2024-06-28 00:07:46,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4983, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5322, PETRI_PLACES=396, PETRI_TRANSITIONS=396} [2024-06-28 00:07:46,055 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 366 predicate places. [2024-06-28 00:07:46,055 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 396 transitions, 5322 flow [2024-06-28 00:07:46,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:46,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:46,056 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 00:07:46,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 00:07:46,056 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:46,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:46,057 INFO L85 PathProgramCache]: Analyzing trace with hash -827258891, now seen corresponding path program 1 times [2024-06-28 00:07:46,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:46,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45931941] [2024-06-28 00:07:46,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:46,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:48,551 INFO 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 00:07:48,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:48,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45931941] [2024-06-28 00:07:48,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45931941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:48,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:48,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:07:48,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363920241] [2024-06-28 00:07:48,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:48,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:07:48,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:48,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:07:48,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:07:48,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:48,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 396 transitions, 5322 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:48,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:48,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:48,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:49,331 INFO L124 PetriNetUnfolderBase]: 1087/1887 cut-off events. [2024-06-28 00:07:49,331 INFO L125 PetriNetUnfolderBase]: For 310719/310719 co-relation queries the response was YES. [2024-06-28 00:07:49,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16654 conditions, 1887 events. 1087/1887 cut-off events. For 310719/310719 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 10761 event pairs, 221 based on Foata normal form. 2/1887 useless extension candidates. Maximal degree in co-relation 16496. Up to 1712 conditions per place. [2024-06-28 00:07:49,354 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 349 selfloop transitions, 61 changer transitions 0/412 dead transitions. [2024-06-28 00:07:49,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 412 transitions, 6208 flow [2024-06-28 00:07:49,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:49,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:49,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 00:07:49,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 00:07:49,355 INFO L175 Difference]: Start difference. First operand has 396 places, 396 transitions, 5322 flow. Second operand 11 states and 126 transitions. [2024-06-28 00:07:49,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 412 transitions, 6208 flow [2024-06-28 00:07:50,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 412 transitions, 5920 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 00:07:50,930 INFO L231 Difference]: Finished difference. Result has 398 places, 397 transitions, 5186 flow [2024-06-28 00:07:50,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5034, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5186, PETRI_PLACES=398, PETRI_TRANSITIONS=397} [2024-06-28 00:07:50,930 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 368 predicate places. [2024-06-28 00:07:50,935 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 397 transitions, 5186 flow [2024-06-28 00:07:50,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:50,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:50,935 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 00:07:50,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 00:07:50,936 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:50,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:50,936 INFO L85 PathProgramCache]: Analyzing trace with hash -827468637, now seen corresponding path program 4 times [2024-06-28 00:07:50,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:50,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838007709] [2024-06-28 00:07:50,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:50,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:53,259 INFO 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 00:07:53,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:53,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838007709] [2024-06-28 00:07:53,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838007709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:53,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:53,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:53,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798810600] [2024-06-28 00:07:53,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:53,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:53,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:53,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:53,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:53,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:53,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 397 transitions, 5186 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:53,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:53,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:53,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:54,402 INFO L124 PetriNetUnfolderBase]: 1083/1881 cut-off events. [2024-06-28 00:07:54,402 INFO L125 PetriNetUnfolderBase]: For 301641/301641 co-relation queries the response was YES. [2024-06-28 00:07:54,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16213 conditions, 1881 events. 1083/1881 cut-off events. For 301641/301641 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 10689 event pairs, 244 based on Foata normal form. 2/1881 useless extension candidates. Maximal degree in co-relation 16054. Up to 1331 conditions per place. [2024-06-28 00:07:54,425 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 293 selfloop transitions, 121 changer transitions 0/416 dead transitions. [2024-06-28 00:07:54,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 416 transitions, 6323 flow [2024-06-28 00:07:54,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:07:54,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:07:54,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-28 00:07:54,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-28 00:07:54,427 INFO L175 Difference]: Start difference. First operand has 398 places, 397 transitions, 5186 flow. Second operand 12 states and 148 transitions. [2024-06-28 00:07:54,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 416 transitions, 6323 flow [2024-06-28 00:07:55,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 416 transitions, 6163 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 00:07:55,844 INFO L231 Difference]: Finished difference. Result has 401 places, 397 transitions, 5273 flow [2024-06-28 00:07:55,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5026, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5273, PETRI_PLACES=401, PETRI_TRANSITIONS=397} [2024-06-28 00:07:55,844 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 371 predicate places. [2024-06-28 00:07:55,844 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 397 transitions, 5273 flow [2024-06-28 00:07:55,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:55,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:55,845 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 00:07:55,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 00:07:55,845 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:55,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:55,845 INFO L85 PathProgramCache]: Analyzing trace with hash -827474372, now seen corresponding path program 8 times [2024-06-28 00:07:55,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:55,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526673051] [2024-06-28 00:07:55,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:55,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:57,879 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 00:07:57,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:57,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526673051] [2024-06-28 00:07:57,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526673051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:57,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:57,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:57,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607755995] [2024-06-28 00:07:57,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:57,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:57,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:57,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:57,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:58,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:58,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 397 transitions, 5273 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:58,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:58,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:58,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:58,771 INFO L124 PetriNetUnfolderBase]: 1087/1889 cut-off events. [2024-06-28 00:07:58,771 INFO L125 PetriNetUnfolderBase]: For 307623/307623 co-relation queries the response was YES. [2024-06-28 00:07:58,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16412 conditions, 1889 events. 1087/1889 cut-off events. For 307623/307623 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 10759 event pairs, 250 based on Foata normal form. 2/1889 useless extension candidates. Maximal degree in co-relation 16252. Up to 1672 conditions per place. [2024-06-28 00:07:58,795 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 334 selfloop transitions, 77 changer transitions 0/413 dead transitions. [2024-06-28 00:07:58,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 413 transitions, 6186 flow [2024-06-28 00:07:58,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:58,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:58,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 00:07:58,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-28 00:07:58,796 INFO L175 Difference]: Start difference. First operand has 401 places, 397 transitions, 5273 flow. Second operand 11 states and 133 transitions. [2024-06-28 00:07:58,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 413 transitions, 6186 flow [2024-06-28 00:08:00,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 413 transitions, 5899 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 00:08:00,173 INFO L231 Difference]: Finished difference. Result has 400 places, 398 transitions, 5162 flow [2024-06-28 00:08:00,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4986, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5162, PETRI_PLACES=400, PETRI_TRANSITIONS=398} [2024-06-28 00:08:00,173 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 370 predicate places. [2024-06-28 00:08:00,174 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 398 transitions, 5162 flow [2024-06-28 00:08:00,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:00,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:00,174 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 00:08:00,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 00:08:00,174 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:00,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:00,175 INFO L85 PathProgramCache]: Analyzing trace with hash -832984622, now seen corresponding path program 9 times [2024-06-28 00:08:00,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:00,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258320625] [2024-06-28 00:08:00,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:00,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:02,365 INFO 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 00:08:02,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:02,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258320625] [2024-06-28 00:08:02,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258320625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:02,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:02,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:02,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350711528] [2024-06-28 00:08:02,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:02,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:02,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:02,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:02,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:02,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:02,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 398 transitions, 5162 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:02,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:02,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:02,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:03,314 INFO L124 PetriNetUnfolderBase]: 1102/1918 cut-off events. [2024-06-28 00:08:03,314 INFO L125 PetriNetUnfolderBase]: For 326054/326054 co-relation queries the response was YES. [2024-06-28 00:08:03,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16655 conditions, 1918 events. 1102/1918 cut-off events. For 326054/326054 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 11001 event pairs, 251 based on Foata normal form. 2/1918 useless extension candidates. Maximal degree in co-relation 16494. Up to 1672 conditions per place. [2024-06-28 00:08:03,339 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 338 selfloop transitions, 78 changer transitions 0/418 dead transitions. [2024-06-28 00:08:03,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 418 transitions, 6335 flow [2024-06-28 00:08:03,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:03,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:03,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 00:08:03,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 00:08:03,340 INFO L175 Difference]: Start difference. First operand has 400 places, 398 transitions, 5162 flow. Second operand 11 states and 136 transitions. [2024-06-28 00:08:03,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 418 transitions, 6335 flow [2024-06-28 00:08:04,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 418 transitions, 6159 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:04,931 INFO L231 Difference]: Finished difference. Result has 403 places, 401 transitions, 5198 flow [2024-06-28 00:08:04,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4986, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5198, PETRI_PLACES=403, PETRI_TRANSITIONS=401} [2024-06-28 00:08:04,931 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 373 predicate places. [2024-06-28 00:08:04,932 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 401 transitions, 5198 flow [2024-06-28 00:08:04,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:04,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:04,932 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 00:08:04,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 00:08:04,932 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:04,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:04,933 INFO L85 PathProgramCache]: Analyzing trace with hash -832980902, now seen corresponding path program 10 times [2024-06-28 00:08:04,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:04,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629750010] [2024-06-28 00:08:04,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:04,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:07,063 INFO 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 00:08:07,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:07,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629750010] [2024-06-28 00:08:07,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629750010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:07,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:07,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:08:07,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53793821] [2024-06-28 00:08:07,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:07,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:08:07,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:07,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:08:07,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:08:07,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:07,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 401 transitions, 5198 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:07,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:07,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:07,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:08,093 INFO L124 PetriNetUnfolderBase]: 1099/1913 cut-off events. [2024-06-28 00:08:08,093 INFO L125 PetriNetUnfolderBase]: For 317975/317975 co-relation queries the response was YES. [2024-06-28 00:08:08,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16464 conditions, 1913 events. 1099/1913 cut-off events. For 317975/317975 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 10952 event pairs, 250 based on Foata normal form. 2/1913 useless extension candidates. Maximal degree in co-relation 16301. Up to 1696 conditions per place. [2024-06-28 00:08:08,118 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 339 selfloop transitions, 75 changer transitions 0/416 dead transitions. [2024-06-28 00:08:08,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 416 transitions, 6101 flow [2024-06-28 00:08:08,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:08:08,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:08:08,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-28 00:08:08,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-28 00:08:08,119 INFO L175 Difference]: Start difference. First operand has 403 places, 401 transitions, 5198 flow. Second operand 12 states and 140 transitions. [2024-06-28 00:08:08,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 416 transitions, 6101 flow [2024-06-28 00:08:09,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 416 transitions, 5984 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 00:08:09,606 INFO L231 Difference]: Finished difference. Result has 409 places, 401 transitions, 5235 flow [2024-06-28 00:08:09,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5081, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5235, PETRI_PLACES=409, PETRI_TRANSITIONS=401} [2024-06-28 00:08:09,606 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 379 predicate places. [2024-06-28 00:08:09,607 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 401 transitions, 5235 flow [2024-06-28 00:08:09,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:09,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:09,607 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 00:08:09,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 00:08:09,607 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:09,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:09,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1241695033, now seen corresponding path program 2 times [2024-06-28 00:08:09,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:09,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722191177] [2024-06-28 00:08:09,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:09,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:11,361 INFO 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 00:08:11,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:11,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722191177] [2024-06-28 00:08:11,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722191177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:11,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:11,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:11,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320037092] [2024-06-28 00:08:11,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:11,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:11,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:11,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:11,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:11,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:11,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 401 transitions, 5235 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 00:08:11,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:11,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:11,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:12,081 INFO L124 PetriNetUnfolderBase]: 1103/1921 cut-off events. [2024-06-28 00:08:12,081 INFO L125 PetriNetUnfolderBase]: For 324674/324674 co-relation queries the response was YES. [2024-06-28 00:08:12,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16643 conditions, 1921 events. 1103/1921 cut-off events. For 324674/324674 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 11060 event pairs, 236 based on Foata normal form. 2/1921 useless extension candidates. Maximal degree in co-relation 16479. Up to 1839 conditions per place. [2024-06-28 00:08:12,112 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 384 selfloop transitions, 30 changer transitions 0/416 dead transitions. [2024-06-28 00:08:12,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 416 transitions, 6127 flow [2024-06-28 00:08:12,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:12,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:12,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 00:08:12,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 00:08:12,114 INFO L175 Difference]: Start difference. First operand has 409 places, 401 transitions, 5235 flow. Second operand 11 states and 122 transitions. [2024-06-28 00:08:12,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 416 transitions, 6127 flow [2024-06-28 00:08:13,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 416 transitions, 5971 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:08:13,680 INFO L231 Difference]: Finished difference. Result has 410 places, 402 transitions, 5171 flow [2024-06-28 00:08:13,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5079, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5171, PETRI_PLACES=410, PETRI_TRANSITIONS=402} [2024-06-28 00:08:13,680 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 380 predicate places. [2024-06-28 00:08:13,681 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 402 transitions, 5171 flow [2024-06-28 00:08:13,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 00:08:13,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:13,681 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 00:08:13,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 00:08:13,681 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:13,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:13,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1241704333, now seen corresponding path program 3 times [2024-06-28 00:08:13,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:13,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699467852] [2024-06-28 00:08:13,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:13,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:13,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:15,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:15,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:15,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699467852] [2024-06-28 00:08:15,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699467852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:15,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:15,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:15,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119571298] [2024-06-28 00:08:15,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:15,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:15,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:15,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:15,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:15,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:15,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 402 transitions, 5171 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 00:08:15,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:15,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:15,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:16,294 INFO L124 PetriNetUnfolderBase]: 1107/1929 cut-off events. [2024-06-28 00:08:16,294 INFO L125 PetriNetUnfolderBase]: For 328771/328771 co-relation queries the response was YES. [2024-06-28 00:08:16,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16662 conditions, 1929 events. 1107/1929 cut-off events. For 328771/328771 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 11134 event pairs, 235 based on Foata normal form. 2/1929 useless extension candidates. Maximal degree in co-relation 16497. Up to 1847 conditions per place. [2024-06-28 00:08:16,318 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 386 selfloop transitions, 29 changer transitions 0/417 dead transitions. [2024-06-28 00:08:16,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 417 transitions, 6065 flow [2024-06-28 00:08:16,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:16,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:16,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 00:08:16,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:08:16,320 INFO L175 Difference]: Start difference. First operand has 410 places, 402 transitions, 5171 flow. Second operand 11 states and 121 transitions. [2024-06-28 00:08:16,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 417 transitions, 6065 flow [2024-06-28 00:08:17,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 417 transitions, 5983 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:17,975 INFO L231 Difference]: Finished difference. Result has 412 places, 403 transitions, 5181 flow [2024-06-28 00:08:17,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5089, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5181, PETRI_PLACES=412, PETRI_TRANSITIONS=403} [2024-06-28 00:08:17,976 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 382 predicate places. [2024-06-28 00:08:17,976 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 403 transitions, 5181 flow [2024-06-28 00:08:17,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 00:08:17,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:17,976 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 00:08:17,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 00:08:17,977 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:17,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:17,978 INFO L85 PathProgramCache]: Analyzing trace with hash 206316631, now seen corresponding path program 5 times [2024-06-28 00:08:17,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:17,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778394098] [2024-06-28 00:08:17,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:17,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:20,091 INFO 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 00:08:20,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:20,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778394098] [2024-06-28 00:08:20,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778394098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:20,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:20,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:20,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17543932] [2024-06-28 00:08:20,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:20,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:20,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:20,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:20,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:20,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:20,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 403 transitions, 5181 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:20,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:20,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:20,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:21,216 INFO L124 PetriNetUnfolderBase]: 1113/1939 cut-off events. [2024-06-28 00:08:21,217 INFO L125 PetriNetUnfolderBase]: For 334332/334332 co-relation queries the response was YES. [2024-06-28 00:08:21,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16738 conditions, 1939 events. 1113/1939 cut-off events. For 334332/334332 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 11181 event pairs, 249 based on Foata normal form. 2/1939 useless extension candidates. Maximal degree in co-relation 16572. Up to 1838 conditions per place. [2024-06-28 00:08:21,243 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 384 selfloop transitions, 36 changer transitions 0/422 dead transitions. [2024-06-28 00:08:21,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 422 transitions, 6376 flow [2024-06-28 00:08:21,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:08:21,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:08:21,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-28 00:08:21,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-28 00:08:21,244 INFO L175 Difference]: Start difference. First operand has 412 places, 403 transitions, 5181 flow. Second operand 12 states and 137 transitions. [2024-06-28 00:08:21,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 422 transitions, 6376 flow [2024-06-28 00:08:22,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 422 transitions, 6294 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:22,848 INFO L231 Difference]: Finished difference. Result has 415 places, 405 transitions, 5218 flow [2024-06-28 00:08:22,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5099, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5218, PETRI_PLACES=415, PETRI_TRANSITIONS=405} [2024-06-28 00:08:22,849 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 385 predicate places. [2024-06-28 00:08:22,849 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 405 transitions, 5218 flow [2024-06-28 00:08:22,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:22,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:22,849 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 00:08:22,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 00:08:22,850 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:22,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:22,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1539190229, now seen corresponding path program 4 times [2024-06-28 00:08:22,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:22,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267071871] [2024-06-28 00:08:22,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:22,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:25,434 INFO 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 00:08:25,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:25,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267071871] [2024-06-28 00:08:25,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267071871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:25,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:25,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:25,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109088494] [2024-06-28 00:08:25,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:25,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:25,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:25,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:25,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:25,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:25,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 405 transitions, 5218 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:25,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:25,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:25,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:26,367 INFO L124 PetriNetUnfolderBase]: 1117/1947 cut-off events. [2024-06-28 00:08:26,367 INFO L125 PetriNetUnfolderBase]: For 341543/341543 co-relation queries the response was YES. [2024-06-28 00:08:26,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16835 conditions, 1947 events. 1117/1947 cut-off events. For 341543/341543 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 11252 event pairs, 234 based on Foata normal form. 2/1947 useless extension candidates. Maximal degree in co-relation 16668. Up to 1844 conditions per place. [2024-06-28 00:08:26,400 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 382 selfloop transitions, 37 changer transitions 0/421 dead transitions. [2024-06-28 00:08:26,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 421 transitions, 6128 flow [2024-06-28 00:08:26,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:26,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:26,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 00:08:26,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 00:08:26,401 INFO L175 Difference]: Start difference. First operand has 415 places, 405 transitions, 5218 flow. Second operand 11 states and 127 transitions. [2024-06-28 00:08:26,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 421 transitions, 6128 flow [2024-06-28 00:08:28,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 421 transitions, 6026 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-28 00:08:28,337 INFO L231 Difference]: Finished difference. Result has 416 places, 406 transitions, 5226 flow [2024-06-28 00:08:28,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5116, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5226, PETRI_PLACES=416, PETRI_TRANSITIONS=406} [2024-06-28 00:08:28,337 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 386 predicate places. [2024-06-28 00:08:28,337 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 406 transitions, 5226 flow [2024-06-28 00:08:28,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:28,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:28,338 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 00:08:28,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 00:08:28,338 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:28,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:28,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1040338377, now seen corresponding path program 6 times [2024-06-28 00:08:28,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:28,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658439128] [2024-06-28 00:08:28,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:28,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:28,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:30,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:30,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:30,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658439128] [2024-06-28 00:08:30,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658439128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:30,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:30,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:08:30,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603968888] [2024-06-28 00:08:30,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:30,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:08:30,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:30,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:08:30,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:08:30,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:30,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 406 transitions, 5226 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:30,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:30,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:30,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:31,625 INFO L124 PetriNetUnfolderBase]: 1123/1957 cut-off events. [2024-06-28 00:08:31,625 INFO L125 PetriNetUnfolderBase]: For 345789/345789 co-relation queries the response was YES. [2024-06-28 00:08:31,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16924 conditions, 1957 events. 1123/1957 cut-off events. For 345789/345789 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 11342 event pairs, 231 based on Foata normal form. 2/1957 useless extension candidates. Maximal degree in co-relation 16756. Up to 1717 conditions per place. [2024-06-28 00:08:31,652 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 363 selfloop transitions, 66 changer transitions 0/431 dead transitions. [2024-06-28 00:08:31,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 431 transitions, 6740 flow [2024-06-28 00:08:31,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:08:31,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:08:31,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-28 00:08:31,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-28 00:08:31,653 INFO L175 Difference]: Start difference. First operand has 416 places, 406 transitions, 5226 flow. Second operand 12 states and 148 transitions. [2024-06-28 00:08:31,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 431 transitions, 6740 flow [2024-06-28 00:08:33,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 431 transitions, 6640 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:33,331 INFO L231 Difference]: Finished difference. Result has 419 places, 408 transitions, 5305 flow [2024-06-28 00:08:33,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5126, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5305, PETRI_PLACES=419, PETRI_TRANSITIONS=408} [2024-06-28 00:08:33,332 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 389 predicate places. [2024-06-28 00:08:33,332 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 408 transitions, 5305 flow [2024-06-28 00:08:33,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:33,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:33,332 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 00:08:33,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 00:08:33,332 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:33,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:33,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1725036830, now seen corresponding path program 11 times [2024-06-28 00:08:33,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:33,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404421868] [2024-06-28 00:08:33,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:33,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:35,517 INFO 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 00:08:35,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:35,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404421868] [2024-06-28 00:08:35,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404421868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:35,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:35,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:08:35,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883422102] [2024-06-28 00:08:35,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:35,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:08:35,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:35,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:08:35,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:08:35,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:35,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 408 transitions, 5305 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:35,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:35,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:35,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:36,458 INFO L124 PetriNetUnfolderBase]: 1127/1965 cut-off events. [2024-06-28 00:08:36,459 INFO L125 PetriNetUnfolderBase]: For 351600/351600 co-relation queries the response was YES. [2024-06-28 00:08:36,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17065 conditions, 1965 events. 1127/1965 cut-off events. For 351600/351600 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 11382 event pairs, 260 based on Foata normal form. 2/1965 useless extension candidates. Maximal degree in co-relation 16896. Up to 1903 conditions per place. [2024-06-28 00:08:36,485 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 392 selfloop transitions, 29 changer transitions 0/423 dead transitions. [2024-06-28 00:08:36,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 423 transitions, 6251 flow [2024-06-28 00:08:36,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:08:36,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:08:36,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-28 00:08:36,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 00:08:36,487 INFO L175 Difference]: Start difference. First operand has 419 places, 408 transitions, 5305 flow. Second operand 12 states and 128 transitions. [2024-06-28 00:08:36,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 423 transitions, 6251 flow [2024-06-28 00:08:38,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 423 transitions, 6093 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-28 00:08:38,206 INFO L231 Difference]: Finished difference. Result has 422 places, 411 transitions, 5292 flow [2024-06-28 00:08:38,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5147, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5292, PETRI_PLACES=422, PETRI_TRANSITIONS=411} [2024-06-28 00:08:38,207 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 392 predicate places. [2024-06-28 00:08:38,207 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 411 transitions, 5292 flow [2024-06-28 00:08:38,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:38,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:38,207 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 00:08:38,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 00:08:38,208 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:38,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:38,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1234285723, now seen corresponding path program 5 times [2024-06-28 00:08:38,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:38,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396639177] [2024-06-28 00:08:38,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:38,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:40,283 INFO 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 00:08:40,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:40,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396639177] [2024-06-28 00:08:40,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396639177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:40,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:40,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:40,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140504987] [2024-06-28 00:08:40,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:40,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:40,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:40,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:40,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:40,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:40,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 411 transitions, 5292 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:40,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:40,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:40,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:41,144 INFO L124 PetriNetUnfolderBase]: 1131/1973 cut-off events. [2024-06-28 00:08:41,144 INFO L125 PetriNetUnfolderBase]: For 357701/357701 co-relation queries the response was YES. [2024-06-28 00:08:41,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17078 conditions, 1973 events. 1131/1973 cut-off events. For 357701/357701 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 11468 event pairs, 239 based on Foata normal form. 2/1973 useless extension candidates. Maximal degree in co-relation 16907. Up to 1882 conditions per place. [2024-06-28 00:08:41,171 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 392 selfloop transitions, 33 changer transitions 0/427 dead transitions. [2024-06-28 00:08:41,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 427 transitions, 6216 flow [2024-06-28 00:08:41,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:41,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:41,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 00:08:41,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-28 00:08:41,173 INFO L175 Difference]: Start difference. First operand has 422 places, 411 transitions, 5292 flow. Second operand 11 states and 125 transitions. [2024-06-28 00:08:41,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 427 transitions, 6216 flow [2024-06-28 00:08:43,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 427 transitions, 6110 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:43,026 INFO L231 Difference]: Finished difference. Result has 424 places, 412 transitions, 5290 flow [2024-06-28 00:08:43,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5186, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5290, PETRI_PLACES=424, PETRI_TRANSITIONS=412} [2024-06-28 00:08:43,026 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 394 predicate places. [2024-06-28 00:08:43,027 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 412 transitions, 5290 flow [2024-06-28 00:08:43,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:43,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:43,027 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 00:08:43,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 00:08:43,027 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:43,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:43,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1234277787, now seen corresponding path program 7 times [2024-06-28 00:08:43,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:43,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879120205] [2024-06-28 00:08:43,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:43,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:43,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:45,711 INFO 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 00:08:45,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:45,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879120205] [2024-06-28 00:08:45,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879120205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:45,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:45,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:45,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477176888] [2024-06-28 00:08:45,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:45,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:45,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:45,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:45,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:45,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:45,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 412 transitions, 5290 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:45,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:45,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:45,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:46,970 INFO L124 PetriNetUnfolderBase]: 1127/1967 cut-off events. [2024-06-28 00:08:46,971 INFO L125 PetriNetUnfolderBase]: For 348752/348752 co-relation queries the response was YES. [2024-06-28 00:08:46,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16813 conditions, 1967 events. 1127/1967 cut-off events. For 348752/348752 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 11412 event pairs, 251 based on Foata normal form. 2/1967 useless extension candidates. Maximal degree in co-relation 16641. Up to 1869 conditions per place. [2024-06-28 00:08:47,001 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 387 selfloop transitions, 38 changer transitions 0/427 dead transitions. [2024-06-28 00:08:47,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 427 transitions, 6182 flow [2024-06-28 00:08:47,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:08:47,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:08:47,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-28 00:08:47,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-28 00:08:47,002 INFO L175 Difference]: Start difference. First operand has 424 places, 412 transitions, 5290 flow. Second operand 12 states and 137 transitions. [2024-06-28 00:08:47,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 427 transitions, 6182 flow [2024-06-28 00:08:48,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 427 transitions, 6070 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:48,728 INFO L231 Difference]: Finished difference. Result has 427 places, 412 transitions, 5259 flow [2024-06-28 00:08:48,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5178, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5259, PETRI_PLACES=427, PETRI_TRANSITIONS=412} [2024-06-28 00:08:48,729 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 397 predicate places. [2024-06-28 00:08:48,729 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 412 transitions, 5259 flow [2024-06-28 00:08:48,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:48,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:48,729 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 00:08:48,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 00:08:48,730 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:48,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:48,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1040136567, now seen corresponding path program 8 times [2024-06-28 00:08:48,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:48,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834869925] [2024-06-28 00:08:48,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:48,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:51,127 INFO 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 00:08:51,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:51,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834869925] [2024-06-28 00:08:51,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834869925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:51,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:51,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:08:51,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753876007] [2024-06-28 00:08:51,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:51,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:08:51,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:51,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:08:51,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:08:51,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:51,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 412 transitions, 5259 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:51,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:51,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:51,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:52,381 INFO L124 PetriNetUnfolderBase]: 1123/1961 cut-off events. [2024-06-28 00:08:52,381 INFO L125 PetriNetUnfolderBase]: For 339185/339185 co-relation queries the response was YES. [2024-06-28 00:08:52,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16520 conditions, 1961 events. 1123/1961 cut-off events. For 339185/339185 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 11417 event pairs, 250 based on Foata normal form. 2/1961 useless extension candidates. Maximal degree in co-relation 16347. Up to 1772 conditions per place. [2024-06-28 00:08:52,405 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 375 selfloop transitions, 55 changer transitions 0/432 dead transitions. [2024-06-28 00:08:52,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 432 transitions, 6501 flow [2024-06-28 00:08:52,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:08:52,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:08:52,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-28 00:08:52,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-28 00:08:52,406 INFO L175 Difference]: Start difference. First operand has 427 places, 412 transitions, 5259 flow. Second operand 12 states and 145 transitions. [2024-06-28 00:08:52,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 432 transitions, 6501 flow [2024-06-28 00:08:54,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 432 transitions, 6378 flow, removed 13 selfloop flow, removed 12 redundant places. [2024-06-28 00:08:54,162 INFO L231 Difference]: Finished difference. Result has 427 places, 412 transitions, 5251 flow [2024-06-28 00:08:54,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5136, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5251, PETRI_PLACES=427, PETRI_TRANSITIONS=412} [2024-06-28 00:08:54,162 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 397 predicate places. [2024-06-28 00:08:54,163 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 412 transitions, 5251 flow [2024-06-28 00:08:54,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:54,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:54,163 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 00:08:54,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 00:08:54,163 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:54,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:54,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1531097420, now seen corresponding path program 12 times [2024-06-28 00:08:54,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:54,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120915249] [2024-06-28 00:08:54,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:54,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:56,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:56,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:56,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120915249] [2024-06-28 00:08:56,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120915249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:56,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:56,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:56,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139116025] [2024-06-28 00:08:56,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:56,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:56,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:56,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:56,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:56,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:56,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 412 transitions, 5251 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:56,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:56,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:56,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:57,208 INFO L124 PetriNetUnfolderBase]: 1127/1969 cut-off events. [2024-06-28 00:08:57,209 INFO L125 PetriNetUnfolderBase]: For 344517/344517 co-relation queries the response was YES. [2024-06-28 00:08:57,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16625 conditions, 1969 events. 1127/1969 cut-off events. For 344517/344517 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 11438 event pairs, 258 based on Foata normal form. 2/1969 useless extension candidates. Maximal degree in co-relation 16451. Up to 1881 conditions per place. [2024-06-28 00:08:57,236 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 389 selfloop transitions, 38 changer transitions 0/429 dead transitions. [2024-06-28 00:08:57,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 429 transitions, 6266 flow [2024-06-28 00:08:57,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:08:57,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:08:57,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 00:08:57,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-28 00:08:57,237 INFO L175 Difference]: Start difference. First operand has 427 places, 412 transitions, 5251 flow. Second operand 11 states and 128 transitions. [2024-06-28 00:08:57,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 429 transitions, 6266 flow [2024-06-28 00:08:58,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 429 transitions, 6123 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 00:08:58,821 INFO L231 Difference]: Finished difference. Result has 427 places, 415 transitions, 5277 flow [2024-06-28 00:08:58,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5112, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5277, PETRI_PLACES=427, PETRI_TRANSITIONS=415} [2024-06-28 00:08:58,822 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 397 predicate places. [2024-06-28 00:08:58,822 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 415 transitions, 5277 flow [2024-06-28 00:08:58,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:58,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:58,822 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 00:08:58,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 00:08:58,822 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:58,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:58,823 INFO L85 PathProgramCache]: Analyzing trace with hash 6861236, now seen corresponding path program 13 times [2024-06-28 00:08:58,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:58,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991294504] [2024-06-28 00:08:58,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:58,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:01,210 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 00:09:01,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:01,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991294504] [2024-06-28 00:09:01,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991294504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:01,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:01,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:01,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784791246] [2024-06-28 00:09:01,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:01,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:01,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:01,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:01,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:01,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:09:01,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 415 transitions, 5277 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:01,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:01,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:09:01,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:02,264 INFO L124 PetriNetUnfolderBase]: 1142/1998 cut-off events. [2024-06-28 00:09:02,265 INFO L125 PetriNetUnfolderBase]: For 365707/365707 co-relation queries the response was YES. [2024-06-28 00:09:02,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17040 conditions, 1998 events. 1142/1998 cut-off events. For 365707/365707 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 11662 event pairs, 259 based on Foata normal form. 2/1998 useless extension candidates. Maximal degree in co-relation 16864. Up to 1881 conditions per place. [2024-06-28 00:09:02,295 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 388 selfloop transitions, 45 changer transitions 0/435 dead transitions. [2024-06-28 00:09:02,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 435 transitions, 6545 flow [2024-06-28 00:09:02,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:02,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:02,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 00:09:02,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-28 00:09:02,298 INFO L175 Difference]: Start difference. First operand has 427 places, 415 transitions, 5277 flow. Second operand 11 states and 128 transitions. [2024-06-28 00:09:02,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 435 transitions, 6545 flow [2024-06-28 00:09:04,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 435 transitions, 6415 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-28 00:09:04,267 INFO L231 Difference]: Finished difference. Result has 432 places, 421 transitions, 5391 flow [2024-06-28 00:09:04,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5149, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5391, PETRI_PLACES=432, PETRI_TRANSITIONS=421} [2024-06-28 00:09:04,267 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 402 predicate places. [2024-06-28 00:09:04,267 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 421 transitions, 5391 flow [2024-06-28 00:09:04,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:04,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:04,268 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 00:09:04,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 00:09:04,268 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:04,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:04,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1034624302, now seen corresponding path program 14 times [2024-06-28 00:09:04,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:04,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186968854] [2024-06-28 00:09:04,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:04,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:06,033 INFO 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 00:09:06,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:06,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186968854] [2024-06-28 00:09:06,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186968854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:06,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:06,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:06,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764879062] [2024-06-28 00:09:06,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:06,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:06,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:06,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:06,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:06,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:09:06,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 421 transitions, 5391 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:06,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:06,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:09:06,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:07,006 INFO L124 PetriNetUnfolderBase]: 1149/2011 cut-off events. [2024-06-28 00:09:07,006 INFO L125 PetriNetUnfolderBase]: For 371947/371947 co-relation queries the response was YES. [2024-06-28 00:09:07,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17217 conditions, 2011 events. 1149/2011 cut-off events. For 371947/371947 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 11794 event pairs, 261 based on Foata normal form. 2/2011 useless extension candidates. Maximal degree in co-relation 17038. Up to 1922 conditions per place. [2024-06-28 00:09:07,035 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 390 selfloop transitions, 44 changer transitions 0/436 dead transitions. [2024-06-28 00:09:07,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 436 transitions, 6350 flow [2024-06-28 00:09:07,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:07,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:07,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 00:09:07,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 00:09:07,036 INFO L175 Difference]: Start difference. First operand has 432 places, 421 transitions, 5391 flow. Second operand 11 states and 126 transitions. [2024-06-28 00:09:07,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 436 transitions, 6350 flow [2024-06-28 00:09:08,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 436 transitions, 6229 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-28 00:09:08,741 INFO L231 Difference]: Finished difference. Result has 438 places, 424 transitions, 5427 flow [2024-06-28 00:09:08,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5282, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5427, PETRI_PLACES=438, PETRI_TRANSITIONS=424} [2024-06-28 00:09:08,742 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 408 predicate places. [2024-06-28 00:09:08,742 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 424 transitions, 5427 flow [2024-06-28 00:09:08,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:08,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:08,743 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 00:09:08,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 00:09:08,743 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:08,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:08,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1034774187, now seen corresponding path program 9 times [2024-06-28 00:09:08,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:08,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337733718] [2024-06-28 00:09:08,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:08,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:11,089 INFO 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 00:09:11,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:11,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337733718] [2024-06-28 00:09:11,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337733718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:11,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:11,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:11,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386783966] [2024-06-28 00:09:11,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:11,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:11,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:11,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:11,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:11,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:09:11,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 424 transitions, 5427 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:11,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:11,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:09:11,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:12,108 INFO L124 PetriNetUnfolderBase]: 1145/2005 cut-off events. [2024-06-28 00:09:12,108 INFO L125 PetriNetUnfolderBase]: For 362000/362000 co-relation queries the response was YES. [2024-06-28 00:09:12,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16880 conditions, 2005 events. 1145/2005 cut-off events. For 362000/362000 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 11761 event pairs, 250 based on Foata normal form. 2/2005 useless extension candidates. Maximal degree in co-relation 16699. Up to 1816 conditions per place. [2024-06-28 00:09:12,137 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 377 selfloop transitions, 60 changer transitions 0/439 dead transitions. [2024-06-28 00:09:12,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 439 transitions, 6343 flow [2024-06-28 00:09:12,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:12,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:12,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-28 00:09:12,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-28 00:09:12,138 INFO L175 Difference]: Start difference. First operand has 438 places, 424 transitions, 5427 flow. Second operand 12 states and 140 transitions. [2024-06-28 00:09:12,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 439 transitions, 6343 flow [2024-06-28 00:09:13,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 439 transitions, 6231 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 00:09:13,933 INFO L231 Difference]: Finished difference. Result has 442 places, 424 transitions, 5440 flow [2024-06-28 00:09:13,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5315, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5440, PETRI_PLACES=442, PETRI_TRANSITIONS=424} [2024-06-28 00:09:13,933 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 412 predicate places. [2024-06-28 00:09:13,934 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 424 transitions, 5440 flow [2024-06-28 00:09:13,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:13,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:13,934 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 00:09:13,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 00:09:13,934 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:13,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:13,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1034768452, now seen corresponding path program 15 times [2024-06-28 00:09:13,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:13,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726146778] [2024-06-28 00:09:13,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:13,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:15,932 INFO 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 00:09:15,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:15,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726146778] [2024-06-28 00:09:15,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726146778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:15,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:15,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:15,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917298884] [2024-06-28 00:09:15,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:15,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:15,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:15,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:15,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:16,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:09:16,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 424 transitions, 5440 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:16,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:16,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:09:16,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:16,850 INFO L124 PetriNetUnfolderBase]: 1142/2000 cut-off events. [2024-06-28 00:09:16,851 INFO L125 PetriNetUnfolderBase]: For 350465/350465 co-relation queries the response was YES. [2024-06-28 00:09:16,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16668 conditions, 2000 events. 1142/2000 cut-off events. For 350465/350465 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 11734 event pairs, 257 based on Foata normal form. 2/2000 useless extension candidates. Maximal degree in co-relation 16486. Up to 1911 conditions per place. [2024-06-28 00:09:16,879 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 392 selfloop transitions, 42 changer transitions 0/436 dead transitions. [2024-06-28 00:09:16,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 436 transitions, 6336 flow [2024-06-28 00:09:16,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:16,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:16,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 00:09:16,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 00:09:16,881 INFO L175 Difference]: Start difference. First operand has 442 places, 424 transitions, 5440 flow. Second operand 11 states and 127 transitions. [2024-06-28 00:09:16,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 436 transitions, 6336 flow [2024-06-28 00:09:18,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 436 transitions, 6195 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-28 00:09:18,722 INFO L231 Difference]: Finished difference. Result has 442 places, 424 transitions, 5387 flow [2024-06-28 00:09:18,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5299, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5387, PETRI_PLACES=442, PETRI_TRANSITIONS=424} [2024-06-28 00:09:18,723 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 412 predicate places. [2024-06-28 00:09:18,723 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 424 transitions, 5387 flow [2024-06-28 00:09:18,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:18,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:18,723 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 00:09:18,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 00:09:18,723 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:18,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:18,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1661747753, now seen corresponding path program 6 times [2024-06-28 00:09:18,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:18,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997521345] [2024-06-28 00:09:18,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:18,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:21,021 INFO 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 00:09:21,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:21,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997521345] [2024-06-28 00:09:21,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997521345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:21,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:21,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:21,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106413389] [2024-06-28 00:09:21,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:21,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:21,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:21,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:21,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:21,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:09:21,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 424 transitions, 5387 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:21,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:21,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:09:21,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:22,058 INFO L124 PetriNetUnfolderBase]: 1146/2007 cut-off events. [2024-06-28 00:09:22,058 INFO L125 PetriNetUnfolderBase]: For 357494/357494 co-relation queries the response was YES. [2024-06-28 00:09:22,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16709 conditions, 2007 events. 1146/2007 cut-off events. For 357494/357494 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 11813 event pairs, 242 based on Foata normal form. 2/2007 useless extension candidates. Maximal degree in co-relation 16526. Up to 1896 conditions per place. [2024-06-28 00:09:22,095 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 394 selfloop transitions, 42 changer transitions 0/438 dead transitions. [2024-06-28 00:09:22,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 438 transitions, 6327 flow [2024-06-28 00:09:22,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:22,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:22,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 00:09:22,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:09:22,096 INFO L175 Difference]: Start difference. First operand has 442 places, 424 transitions, 5387 flow. Second operand 11 states and 121 transitions. [2024-06-28 00:09:22,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 438 transitions, 6327 flow [2024-06-28 00:09:23,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 438 transitions, 6229 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 00:09:23,886 INFO L231 Difference]: Finished difference. Result has 443 places, 425 transitions, 5413 flow [2024-06-28 00:09:23,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5289, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5413, PETRI_PLACES=443, PETRI_TRANSITIONS=425} [2024-06-28 00:09:23,886 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 413 predicate places. [2024-06-28 00:09:23,886 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 425 transitions, 5413 flow [2024-06-28 00:09:23,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:23,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:23,887 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 00:09:23,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 00:09:23,887 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:23,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:23,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1380766409, now seen corresponding path program 10 times [2024-06-28 00:09:23,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:23,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609491472] [2024-06-28 00:09:23,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:23,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:25,995 INFO 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 00:09:25,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:25,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609491472] [2024-06-28 00:09:25,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609491472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:25,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:25,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:25,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995372278] [2024-06-28 00:09:25,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:25,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:25,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:25,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:25,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:26,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:09:26,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 425 transitions, 5413 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:26,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:26,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:09:26,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:27,151 INFO L124 PetriNetUnfolderBase]: 1152/2017 cut-off events. [2024-06-28 00:09:27,152 INFO L125 PetriNetUnfolderBase]: For 361489/361489 co-relation queries the response was YES. [2024-06-28 00:09:27,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16822 conditions, 2017 events. 1152/2017 cut-off events. For 361489/361489 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 11867 event pairs, 243 based on Foata normal form. 2/2017 useless extension candidates. Maximal degree in co-relation 16640. Up to 1866 conditions per place. [2024-06-28 00:09:27,180 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 400 selfloop transitions, 42 changer transitions 0/444 dead transitions. [2024-06-28 00:09:27,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 444 transitions, 6684 flow [2024-06-28 00:09:27,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:27,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:27,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-28 00:09:27,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-28 00:09:27,182 INFO L175 Difference]: Start difference. First operand has 443 places, 425 transitions, 5413 flow. Second operand 12 states and 134 transitions. [2024-06-28 00:09:27,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 444 transitions, 6684 flow [2024-06-28 00:09:28,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 444 transitions, 6570 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 00:09:28,919 INFO L231 Difference]: Finished difference. Result has 446 places, 427 transitions, 5434 flow [2024-06-28 00:09:28,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5299, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5434, PETRI_PLACES=446, PETRI_TRANSITIONS=427} [2024-06-28 00:09:28,919 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 416 predicate places. [2024-06-28 00:09:28,919 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 427 transitions, 5434 flow [2024-06-28 00:09:28,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:28,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:28,920 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 00:09:28,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 00:09:28,920 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:28,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:28,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1334864439, now seen corresponding path program 11 times [2024-06-28 00:09:28,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:28,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789790161] [2024-06-28 00:09:28,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:28,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:31,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:31,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:31,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789790161] [2024-06-28 00:09:31,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789790161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:31,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:31,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:31,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194150927] [2024-06-28 00:09:31,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:31,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:31,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:31,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:31,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:31,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:09:31,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 427 transitions, 5434 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:31,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:31,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:09:31,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:32,603 INFO L124 PetriNetUnfolderBase]: 1158/2027 cut-off events. [2024-06-28 00:09:32,603 INFO L125 PetriNetUnfolderBase]: For 366622/366622 co-relation queries the response was YES. [2024-06-28 00:09:32,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16891 conditions, 2027 events. 1158/2027 cut-off events. For 366622/366622 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 11936 event pairs, 235 based on Foata normal form. 2/2027 useless extension candidates. Maximal degree in co-relation 16708. Up to 1693 conditions per place. [2024-06-28 00:09:32,636 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 368 selfloop transitions, 79 changer transitions 0/449 dead transitions. [2024-06-28 00:09:32,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 449 transitions, 7022 flow [2024-06-28 00:09:32,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:32,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:32,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 00:09:32,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 00:09:32,637 INFO L175 Difference]: Start difference. First operand has 446 places, 427 transitions, 5434 flow. Second operand 11 states and 136 transitions. [2024-06-28 00:09:32,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 449 transitions, 7022 flow [2024-06-28 00:09:34,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 449 transitions, 6931 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 00:09:34,601 INFO L231 Difference]: Finished difference. Result has 448 places, 429 transitions, 5552 flow [2024-06-28 00:09:34,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5343, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5552, PETRI_PLACES=448, PETRI_TRANSITIONS=429} [2024-06-28 00:09:34,602 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 418 predicate places. [2024-06-28 00:09:34,602 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 429 transitions, 5552 flow [2024-06-28 00:09:34,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:34,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:34,602 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 00:09:34,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 00:09:34,602 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:34,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:34,604 INFO L85 PathProgramCache]: Analyzing trace with hash 798248363, now seen corresponding path program 7 times [2024-06-28 00:09:34,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:34,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582732020] [2024-06-28 00:09:34,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:34,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:36,344 INFO 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 00:09:36,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:36,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582732020] [2024-06-28 00:09:36,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582732020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:36,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:36,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:36,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554768803] [2024-06-28 00:09:36,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:36,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:36,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:36,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:36,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:36,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:09:36,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 429 transitions, 5552 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:36,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:36,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:09:36,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:37,168 INFO L124 PetriNetUnfolderBase]: 1162/2035 cut-off events. [2024-06-28 00:09:37,168 INFO L125 PetriNetUnfolderBase]: For 373300/373300 co-relation queries the response was YES. [2024-06-28 00:09:37,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17111 conditions, 2035 events. 1162/2035 cut-off events. For 373300/373300 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 11987 event pairs, 260 based on Foata normal form. 2/2035 useless extension candidates. Maximal degree in co-relation 16927. Up to 1989 conditions per place. [2024-06-28 00:09:37,201 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 417 selfloop transitions, 21 changer transitions 0/440 dead transitions. [2024-06-28 00:09:37,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 440 transitions, 6486 flow [2024-06-28 00:09:37,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:09:37,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:09:37,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 00:09:37,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 00:09:37,202 INFO L175 Difference]: Start difference. First operand has 448 places, 429 transitions, 5552 flow. Second operand 10 states and 108 transitions. [2024-06-28 00:09:37,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 440 transitions, 6486 flow [2024-06-28 00:09:39,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 440 transitions, 6298 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 00:09:39,014 INFO L231 Difference]: Finished difference. Result has 449 places, 430 transitions, 5449 flow [2024-06-28 00:09:39,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5364, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5449, PETRI_PLACES=449, PETRI_TRANSITIONS=430} [2024-06-28 00:09:39,015 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 419 predicate places. [2024-06-28 00:09:39,015 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 430 transitions, 5449 flow [2024-06-28 00:09:39,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:39,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:39,015 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 00:09:39,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 00:09:39,016 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:39,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:39,016 INFO L85 PathProgramCache]: Analyzing trace with hash 798517133, now seen corresponding path program 8 times [2024-06-28 00:09:39,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:39,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970637137] [2024-06-28 00:09:39,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:39,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:40,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:40,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:40,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970637137] [2024-06-28 00:09:40,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970637137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:40,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:40,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:40,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918442719] [2024-06-28 00:09:40,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:40,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:40,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:40,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:40,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:40,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:09:40,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 430 transitions, 5449 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:40,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:40,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:09:40,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:41,372 INFO L124 PetriNetUnfolderBase]: 1170/2051 cut-off events. [2024-06-28 00:09:41,373 INFO L125 PetriNetUnfolderBase]: For 378508/378508 co-relation queries the response was YES. [2024-06-28 00:09:41,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17058 conditions, 2051 events. 1170/2051 cut-off events. For 378508/378508 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 12130 event pairs, 260 based on Foata normal form. 2/2051 useless extension candidates. Maximal degree in co-relation 16873. Up to 2008 conditions per place. [2024-06-28 00:09:41,404 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 424 selfloop transitions, 17 changer transitions 0/443 dead transitions. [2024-06-28 00:09:41,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 443 transitions, 6396 flow [2024-06-28 00:09:41,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:41,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:41,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-28 00:09:41,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-28 00:09:41,406 INFO L175 Difference]: Start difference. First operand has 449 places, 430 transitions, 5449 flow. Second operand 11 states and 113 transitions. [2024-06-28 00:09:41,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 443 transitions, 6396 flow [2024-06-28 00:09:43,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 443 transitions, 6290 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 00:09:43,339 INFO L231 Difference]: Finished difference. Result has 452 places, 432 transitions, 5428 flow [2024-06-28 00:09:43,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5343, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5428, PETRI_PLACES=452, PETRI_TRANSITIONS=432} [2024-06-28 00:09:43,339 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 422 predicate places. [2024-06-28 00:09:43,339 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 432 transitions, 5428 flow [2024-06-28 00:09:43,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:43,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:43,340 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 00:09:43,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 00:09:43,340 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:43,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:43,340 INFO L85 PathProgramCache]: Analyzing trace with hash 798507554, now seen corresponding path program 1 times [2024-06-28 00:09:43,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:43,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299572188] [2024-06-28 00:09:43,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:43,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:44,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:44,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:44,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299572188] [2024-06-28 00:09:44,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299572188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:44,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:44,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:44,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717863232] [2024-06-28 00:09:44,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:44,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:44,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:44,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:44,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:45,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:09:45,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 432 transitions, 5428 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:45,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:45,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:09:45,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:45,822 INFO L124 PetriNetUnfolderBase]: 1167/2047 cut-off events. [2024-06-28 00:09:45,823 INFO L125 PetriNetUnfolderBase]: For 375123/375123 co-relation queries the response was YES. [2024-06-28 00:09:45,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16578 conditions, 2047 events. 1167/2047 cut-off events. For 375123/375123 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 12105 event pairs, 259 based on Foata normal form. 4/2049 useless extension candidates. Maximal degree in co-relation 16391. Up to 1972 conditions per place. [2024-06-28 00:09:45,852 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 413 selfloop transitions, 34 changer transitions 0/449 dead transitions. [2024-06-28 00:09:45,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 449 transitions, 6501 flow [2024-06-28 00:09:45,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:45,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:45,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-28 00:09:45,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-28 00:09:45,854 INFO L175 Difference]: Start difference. First operand has 452 places, 432 transitions, 5428 flow. Second operand 12 states and 125 transitions. [2024-06-28 00:09:45,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 449 transitions, 6501 flow [2024-06-28 00:09:47,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 449 transitions, 6417 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 00:09:47,678 INFO L231 Difference]: Finished difference. Result has 456 places, 436 transitions, 5526 flow [2024-06-28 00:09:47,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5350, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5526, PETRI_PLACES=456, PETRI_TRANSITIONS=436} [2024-06-28 00:09:47,693 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 426 predicate places. [2024-06-28 00:09:47,693 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 436 transitions, 5526 flow [2024-06-28 00:09:47,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:47,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:47,694 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 00:09:47,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 00:09:47,694 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:47,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:47,694 INFO L85 PathProgramCache]: Analyzing trace with hash 542937145, now seen corresponding path program 9 times [2024-06-28 00:09:47,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:47,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158438953] [2024-06-28 00:09:47,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:47,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:49,817 INFO 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 00:09:49,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:49,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158438953] [2024-06-28 00:09:49,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158438953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:49,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:49,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:49,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154977064] [2024-06-28 00:09:49,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:49,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:49,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:49,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:49,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:49,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:09:49,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 436 transitions, 5526 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:49,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:49,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:09:49,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:50,828 INFO L124 PetriNetUnfolderBase]: 1171/2055 cut-off events. [2024-06-28 00:09:50,829 INFO L125 PetriNetUnfolderBase]: For 365228/365228 co-relation queries the response was YES. [2024-06-28 00:09:50,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16658 conditions, 2055 events. 1171/2055 cut-off events. For 365228/365228 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 12182 event pairs, 255 based on Foata normal form. 2/2055 useless extension candidates. Maximal degree in co-relation 16470. Up to 1985 conditions per place. [2024-06-28 00:09:50,862 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 419 selfloop transitions, 29 changer transitions 0/450 dead transitions. [2024-06-28 00:09:50,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 450 transitions, 6496 flow [2024-06-28 00:09:50,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:50,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:50,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 00:09:50,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 00:09:50,863 INFO L175 Difference]: Start difference. First operand has 456 places, 436 transitions, 5526 flow. Second operand 11 states and 118 transitions. [2024-06-28 00:09:50,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 450 transitions, 6496 flow [2024-06-28 00:09:53,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 450 transitions, 6305 flow, removed 27 selfloop flow, removed 11 redundant places. [2024-06-28 00:09:53,155 INFO L231 Difference]: Finished difference. Result has 456 places, 437 transitions, 5439 flow [2024-06-28 00:09:53,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5335, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5439, PETRI_PLACES=456, PETRI_TRANSITIONS=437} [2024-06-28 00:09:53,156 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 426 predicate places. [2024-06-28 00:09:53,156 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 437 transitions, 5439 flow [2024-06-28 00:09:53,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:53,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:53,156 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 00:09:53,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 00:09:53,156 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:53,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:53,157 INFO L85 PathProgramCache]: Analyzing trace with hash 542727399, now seen corresponding path program 12 times [2024-06-28 00:09:53,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:53,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110852279] [2024-06-28 00:09:53,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:53,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:55,154 INFO 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 00:09:55,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:55,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110852279] [2024-06-28 00:09:55,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110852279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:55,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:55,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:55,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494582070] [2024-06-28 00:09:55,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:55,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:55,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:55,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:55,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:55,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:09:55,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 437 transitions, 5439 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:55,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:55,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:09:55,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:56,201 INFO L124 PetriNetUnfolderBase]: 1167/2049 cut-off events. [2024-06-28 00:09:56,201 INFO L125 PetriNetUnfolderBase]: For 352094/352094 co-relation queries the response was YES. [2024-06-28 00:09:56,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16165 conditions, 2049 events. 1167/2049 cut-off events. For 352094/352094 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 12196 event pairs, 246 based on Foata normal form. 2/2049 useless extension candidates. Maximal degree in co-relation 15977. Up to 1941 conditions per place. [2024-06-28 00:09:56,235 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 413 selfloop transitions, 39 changer transitions 0/454 dead transitions. [2024-06-28 00:09:56,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 454 transitions, 6441 flow [2024-06-28 00:09:56,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:56,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:56,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-28 00:09:56,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-28 00:09:56,237 INFO L175 Difference]: Start difference. First operand has 456 places, 437 transitions, 5439 flow. Second operand 12 states and 130 transitions. [2024-06-28 00:09:56,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 454 transitions, 6441 flow [2024-06-28 00:09:57,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 454 transitions, 6331 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-28 00:09:57,912 INFO L231 Difference]: Finished difference. Result has 460 places, 439 transitions, 5486 flow [2024-06-28 00:09:57,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5329, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5486, PETRI_PLACES=460, PETRI_TRANSITIONS=439} [2024-06-28 00:09:57,912 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 430 predicate places. [2024-06-28 00:09:57,912 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 439 transitions, 5486 flow [2024-06-28 00:09:57,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:57,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:57,913 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 00:09:57,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 00:09:57,913 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:57,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:57,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1140917093, now seen corresponding path program 10 times [2024-06-28 00:09:57,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:57,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083564722] [2024-06-28 00:09:57,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:57,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:59,794 INFO 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 00:09:59,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:59,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083564722] [2024-06-28 00:09:59,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083564722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:59,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:59,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:59,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401818509] [2024-06-28 00:09:59,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:59,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:59,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:59,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:59,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:59,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:09:59,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 439 transitions, 5486 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:59,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:59,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:09:59,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:00,742 INFO L124 PetriNetUnfolderBase]: 1171/2057 cut-off events. [2024-06-28 00:10:00,743 INFO L125 PetriNetUnfolderBase]: For 357346/357346 co-relation queries the response was YES. [2024-06-28 00:10:00,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16283 conditions, 2057 events. 1171/2057 cut-off events. For 357346/357346 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 12240 event pairs, 254 based on Foata normal form. 2/2057 useless extension candidates. Maximal degree in co-relation 16093. Up to 1984 conditions per place. [2024-06-28 00:10:00,777 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 424 selfloop transitions, 28 changer transitions 0/454 dead transitions. [2024-06-28 00:10:00,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 454 transitions, 6470 flow [2024-06-28 00:10:00,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:10:00,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:10:00,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 00:10:00,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 00:10:00,778 INFO L175 Difference]: Start difference. First operand has 460 places, 439 transitions, 5486 flow. Second operand 11 states and 122 transitions. [2024-06-28 00:10:00,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 454 transitions, 6470 flow [2024-06-28 00:10:02,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 454 transitions, 6356 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 00:10:02,543 INFO L231 Difference]: Finished difference. Result has 462 places, 440 transitions, 5476 flow [2024-06-28 00:10:02,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5372, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5476, PETRI_PLACES=462, PETRI_TRANSITIONS=440} [2024-06-28 00:10:02,544 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 432 predicate places. [2024-06-28 00:10:02,544 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 440 transitions, 5476 flow [2024-06-28 00:10:02,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:02,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:02,544 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 00:10:02,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 00:10:02,545 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:02,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:02,545 INFO L85 PathProgramCache]: Analyzing trace with hash 619038709, now seen corresponding path program 11 times [2024-06-28 00:10:02,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:02,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843138673] [2024-06-28 00:10:02,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:02,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:04,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:04,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843138673] [2024-06-28 00:10:04,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843138673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:04,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:04,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:04,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610862857] [2024-06-28 00:10:04,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:04,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:04,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:04,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:04,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:04,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:10:04,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 440 transitions, 5476 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:04,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:04,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:10:04,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:05,167 INFO L124 PetriNetUnfolderBase]: 1175/2065 cut-off events. [2024-06-28 00:10:05,167 INFO L125 PetriNetUnfolderBase]: For 361899/361899 co-relation queries the response was YES. [2024-06-28 00:10:05,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16284 conditions, 2065 events. 1175/2065 cut-off events. For 361899/361899 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 12314 event pairs, 258 based on Foata normal form. 2/2065 useless extension candidates. Maximal degree in co-relation 16093. Up to 2017 conditions per place. [2024-06-28 00:10:05,204 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 435 selfloop transitions, 16 changer transitions 0/453 dead transitions. [2024-06-28 00:10:05,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 453 transitions, 6448 flow [2024-06-28 00:10:05,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:10:05,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:10:05,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-28 00:10:05,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-28 00:10:05,205 INFO L175 Difference]: Start difference. First operand has 462 places, 440 transitions, 5476 flow. Second operand 11 states and 112 transitions. [2024-06-28 00:10:05,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 453 transitions, 6448 flow [2024-06-28 00:10:07,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 453 transitions, 6354 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 00:10:07,162 INFO L231 Difference]: Finished difference. Result has 464 places, 441 transitions, 5464 flow [2024-06-28 00:10:07,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5382, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5464, PETRI_PLACES=464, PETRI_TRANSITIONS=441} [2024-06-28 00:10:07,163 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 434 predicate places. [2024-06-28 00:10:07,163 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 441 transitions, 5464 flow [2024-06-28 00:10:07,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:07,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:07,163 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 00:10:07,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 00:10:07,164 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:07,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:07,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1646471625, now seen corresponding path program 12 times [2024-06-28 00:10:07,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:07,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148470178] [2024-06-28 00:10:07,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:07,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:09,016 INFO 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 00:10:09,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:09,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148470178] [2024-06-28 00:10:09,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148470178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:09,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:09,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:09,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634175324] [2024-06-28 00:10:09,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:09,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:09,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:09,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:09,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:09,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:10:09,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 441 transitions, 5464 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:09,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:09,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:10:09,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:09,871 INFO L124 PetriNetUnfolderBase]: 1183/2081 cut-off events. [2024-06-28 00:10:09,871 INFO L125 PetriNetUnfolderBase]: For 367182/367182 co-relation queries the response was YES. [2024-06-28 00:10:09,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16349 conditions, 2081 events. 1183/2081 cut-off events. For 367182/367182 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 12455 event pairs, 264 based on Foata normal form. 2/2081 useless extension candidates. Maximal degree in co-relation 16157. Up to 2028 conditions per place. [2024-06-28 00:10:09,901 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 427 selfloop transitions, 24 changer transitions 0/453 dead transitions. [2024-06-28 00:10:09,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 453 transitions, 6438 flow [2024-06-28 00:10:09,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:10:09,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:10:09,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 00:10:09,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 00:10:09,902 INFO L175 Difference]: Start difference. First operand has 464 places, 441 transitions, 5464 flow. Second operand 10 states and 109 transitions. [2024-06-28 00:10:09,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 453 transitions, 6438 flow [2024-06-28 00:10:11,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 453 transitions, 6366 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 00:10:11,566 INFO L231 Difference]: Finished difference. Result has 465 places, 443 transitions, 5500 flow [2024-06-28 00:10:11,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5392, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5500, PETRI_PLACES=465, PETRI_TRANSITIONS=443} [2024-06-28 00:10:11,566 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 435 predicate places. [2024-06-28 00:10:11,566 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 443 transitions, 5500 flow [2024-06-28 00:10:11,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:11,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:11,568 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 00:10:11,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 00:10:11,568 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:11,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:11,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1646480925, now seen corresponding path program 13 times [2024-06-28 00:10:11,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:11,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790551178] [2024-06-28 00:10:11,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:11,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:13,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:13,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:13,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790551178] [2024-06-28 00:10:13,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790551178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:13,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:13,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:13,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022147526] [2024-06-28 00:10:13,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:13,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:13,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:13,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:13,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:13,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:10:13,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 443 transitions, 5500 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:13,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:13,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:10:13,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:14,148 INFO L124 PetriNetUnfolderBase]: 1187/2089 cut-off events. [2024-06-28 00:10:14,148 INFO L125 PetriNetUnfolderBase]: For 372904/372904 co-relation queries the response was YES. [2024-06-28 00:10:14,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16446 conditions, 2089 events. 1187/2089 cut-off events. For 372904/372904 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 12497 event pairs, 260 based on Foata normal form. 2/2089 useless extension candidates. Maximal degree in co-relation 16253. Up to 2026 conditions per place. [2024-06-28 00:10:14,179 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 431 selfloop transitions, 22 changer transitions 0/455 dead transitions. [2024-06-28 00:10:14,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 455 transitions, 6478 flow [2024-06-28 00:10:14,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:10:14,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:10:14,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-28 00:10:14,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-28 00:10:14,180 INFO L175 Difference]: Start difference. First operand has 465 places, 443 transitions, 5500 flow. Second operand 11 states and 114 transitions. [2024-06-28 00:10:14,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 455 transitions, 6478 flow [2024-06-28 00:10:16,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 455 transitions, 6388 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 00:10:16,065 INFO L231 Difference]: Finished difference. Result has 468 places, 444 transitions, 5510 flow [2024-06-28 00:10:16,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5410, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5510, PETRI_PLACES=468, PETRI_TRANSITIONS=444} [2024-06-28 00:10:16,066 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 438 predicate places. [2024-06-28 00:10:16,066 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 444 transitions, 5510 flow [2024-06-28 00:10:16,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:16,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:16,066 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 00:10:16,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 00:10:16,067 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:16,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:16,067 INFO L85 PathProgramCache]: Analyzing trace with hash 542721664, now seen corresponding path program 16 times [2024-06-28 00:10:16,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:16,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786058205] [2024-06-28 00:10:16,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:16,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:17,698 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 00:10:17,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:17,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786058205] [2024-06-28 00:10:17,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786058205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:17,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:17,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:17,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356288510] [2024-06-28 00:10:17,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:17,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:17,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:17,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:17,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:17,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:10:17,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 444 transitions, 5510 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:17,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:17,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:10:17,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:18,615 INFO L124 PetriNetUnfolderBase]: 1207/2133 cut-off events. [2024-06-28 00:10:18,615 INFO L125 PetriNetUnfolderBase]: For 471784/471784 co-relation queries the response was YES. [2024-06-28 00:10:18,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16639 conditions, 2133 events. 1207/2133 cut-off events. For 471784/471784 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 12812 event pairs, 266 based on Foata normal form. 12/2143 useless extension candidates. Maximal degree in co-relation 16445. Up to 2025 conditions per place. [2024-06-28 00:10:18,649 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 428 selfloop transitions, 26 changer transitions 7/463 dead transitions. [2024-06-28 00:10:18,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 463 transitions, 6553 flow [2024-06-28 00:10:18,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:10:18,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:10:18,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 00:10:18,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 00:10:18,651 INFO L175 Difference]: Start difference. First operand has 468 places, 444 transitions, 5510 flow. Second operand 11 states and 127 transitions. [2024-06-28 00:10:18,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 463 transitions, 6553 flow [2024-06-28 00:10:20,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 463 transitions, 6465 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-28 00:10:20,526 INFO L231 Difference]: Finished difference. Result has 471 places, 444 transitions, 5483 flow [2024-06-28 00:10:20,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5422, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5483, PETRI_PLACES=471, PETRI_TRANSITIONS=444} [2024-06-28 00:10:20,526 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 441 predicate places. [2024-06-28 00:10:20,527 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 444 transitions, 5483 flow [2024-06-28 00:10:20,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:20,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:20,527 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 00:10:20,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 00:10:20,527 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:20,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:20,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1195262535, now seen corresponding path program 13 times [2024-06-28 00:10:20,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:20,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056967378] [2024-06-28 00:10:20,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:20,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:22,541 INFO 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 00:10:22,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:22,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056967378] [2024-06-28 00:10:22,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056967378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:22,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:22,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:22,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837165407] [2024-06-28 00:10:22,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:22,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:22,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:22,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:22,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:22,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:10:22,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 444 transitions, 5483 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:22,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:22,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:10:22,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:23,885 INFO L124 PetriNetUnfolderBase]: 1191/2101 cut-off events. [2024-06-28 00:10:23,885 INFO L125 PetriNetUnfolderBase]: For 376648/376648 co-relation queries the response was YES. [2024-06-28 00:10:23,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16427 conditions, 2101 events. 1191/2101 cut-off events. For 376648/376648 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 12654 event pairs, 250 based on Foata normal form. 2/2101 useless extension candidates. Maximal degree in co-relation 16231. Up to 1970 conditions per place. [2024-06-28 00:10:23,913 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 422 selfloop transitions, 40 changer transitions 0/464 dead transitions. [2024-06-28 00:10:23,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 464 transitions, 6816 flow [2024-06-28 00:10:23,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:23,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:23,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-28 00:10:23,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 00:10:23,914 INFO L175 Difference]: Start difference. First operand has 471 places, 444 transitions, 5483 flow. Second operand 12 states and 138 transitions. [2024-06-28 00:10:23,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 464 transitions, 6816 flow [2024-06-28 00:10:25,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 464 transitions, 6738 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 00:10:25,692 INFO L231 Difference]: Finished difference. Result has 475 places, 446 transitions, 5536 flow [2024-06-28 00:10:25,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5405, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5536, PETRI_PLACES=475, PETRI_TRANSITIONS=446} [2024-06-28 00:10:25,701 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 445 predicate places. [2024-06-28 00:10:25,701 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 446 transitions, 5536 flow [2024-06-28 00:10:25,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:25,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:25,702 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 00:10:25,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 00:10:25,716 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:25,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:25,716 INFO L85 PathProgramCache]: Analyzing trace with hash 550086985, now seen corresponding path program 14 times [2024-06-28 00:10:25,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:25,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965483221] [2024-06-28 00:10:25,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:25,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:28,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:28,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:28,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965483221] [2024-06-28 00:10:28,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965483221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:28,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:28,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:28,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451627830] [2024-06-28 00:10:28,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:28,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:28,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:28,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:28,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:28,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:10:28,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 446 transitions, 5536 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:28,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:28,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:10:28,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:29,258 INFO L124 PetriNetUnfolderBase]: 1195/2109 cut-off events. [2024-06-28 00:10:29,258 INFO L125 PetriNetUnfolderBase]: For 382812/382812 co-relation queries the response was YES. [2024-06-28 00:10:29,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16572 conditions, 2109 events. 1195/2109 cut-off events. For 382812/382812 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 12718 event pairs, 264 based on Foata normal form. 2/2109 useless extension candidates. Maximal degree in co-relation 16375. Up to 2057 conditions per place. [2024-06-28 00:10:29,290 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 436 selfloop transitions, 21 changer transitions 0/459 dead transitions. [2024-06-28 00:10:29,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 459 transitions, 6528 flow [2024-06-28 00:10:29,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:10:29,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:10:29,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 00:10:29,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-28 00:10:29,291 INFO L175 Difference]: Start difference. First operand has 475 places, 446 transitions, 5536 flow. Second operand 11 states and 117 transitions. [2024-06-28 00:10:29,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 459 transitions, 6528 flow [2024-06-28 00:10:31,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 459 transitions, 6418 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-28 00:10:31,340 INFO L231 Difference]: Finished difference. Result has 476 places, 447 transitions, 5522 flow [2024-06-28 00:10:31,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5426, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5522, PETRI_PLACES=476, PETRI_TRANSITIONS=447} [2024-06-28 00:10:31,340 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 446 predicate places. [2024-06-28 00:10:31,341 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 447 transitions, 5522 flow [2024-06-28 00:10:31,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:31,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:31,341 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 00:10:31,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 00:10:31,341 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:31,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:31,352 INFO L85 PathProgramCache]: Analyzing trace with hash 550079049, now seen corresponding path program 14 times [2024-06-28 00:10:31,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:31,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059488385] [2024-06-28 00:10:31,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:31,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:34,358 INFO 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 00:10:34,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:34,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059488385] [2024-06-28 00:10:34,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059488385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:34,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:34,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:10:34,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896822304] [2024-06-28 00:10:34,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:34,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:10:34,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:34,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:10:34,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:10:34,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:10:34,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 447 transitions, 5522 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:34,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:34,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:10:34,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:35,285 INFO L124 PetriNetUnfolderBase]: 1191/2103 cut-off events. [2024-06-28 00:10:35,285 INFO L125 PetriNetUnfolderBase]: For 367770/367770 co-relation queries the response was YES. [2024-06-28 00:10:35,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16200 conditions, 2103 events. 1191/2103 cut-off events. For 367770/367770 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 12675 event pairs, 261 based on Foata normal form. 2/2103 useless extension candidates. Maximal degree in co-relation 16002. Up to 2041 conditions per place. [2024-06-28 00:10:35,320 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 435 selfloop transitions, 24 changer transitions 0/461 dead transitions. [2024-06-28 00:10:35,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 461 transitions, 6478 flow [2024-06-28 00:10:35,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:35,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:35,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-28 00:10:35,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 00:10:35,321 INFO L175 Difference]: Start difference. First operand has 476 places, 447 transitions, 5522 flow. Second operand 12 states and 128 transitions. [2024-06-28 00:10:35,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 461 transitions, 6478 flow [2024-06-28 00:10:37,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 461 transitions, 6376 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-28 00:10:37,112 INFO L231 Difference]: Finished difference. Result has 479 places, 447 transitions, 5473 flow [2024-06-28 00:10:37,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5420, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5473, PETRI_PLACES=479, PETRI_TRANSITIONS=447} [2024-06-28 00:10:37,116 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 449 predicate places. [2024-06-28 00:10:37,117 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 447 transitions, 5473 flow [2024-06-28 00:10:37,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:37,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:37,117 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 00:10:37,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 00:10:37,117 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:37,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:37,118 INFO L85 PathProgramCache]: Analyzing trace with hash 550355755, now seen corresponding path program 15 times [2024-06-28 00:10:37,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:37,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041842567] [2024-06-28 00:10:37,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:37,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:37,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:39,261 INFO 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 00:10:39,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:39,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041842567] [2024-06-28 00:10:39,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041842567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:39,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:39,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:39,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262737864] [2024-06-28 00:10:39,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:39,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:39,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:39,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:39,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:39,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:10:39,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 447 transitions, 5473 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:39,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:39,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:10:39,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:40,181 INFO L124 PetriNetUnfolderBase]: 1195/2111 cut-off events. [2024-06-28 00:10:40,181 INFO L125 PetriNetUnfolderBase]: For 372929/372929 co-relation queries the response was YES. [2024-06-28 00:10:40,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16253 conditions, 2111 events. 1195/2111 cut-off events. For 372929/372929 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 12755 event pairs, 263 based on Foata normal form. 2/2111 useless extension candidates. Maximal degree in co-relation 16054. Up to 2059 conditions per place. [2024-06-28 00:10:40,212 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 438 selfloop transitions, 20 changer transitions 0/460 dead transitions. [2024-06-28 00:10:40,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 460 transitions, 6467 flow [2024-06-28 00:10:40,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:10:40,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:10:40,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 00:10:40,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-28 00:10:40,213 INFO L175 Difference]: Start difference. First operand has 479 places, 447 transitions, 5473 flow. Second operand 11 states and 116 transitions. [2024-06-28 00:10:40,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 460 transitions, 6467 flow [2024-06-28 00:10:41,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 460 transitions, 6412 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 00:10:41,964 INFO L231 Difference]: Finished difference. Result has 480 places, 448 transitions, 5514 flow [2024-06-28 00:10:41,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5418, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5514, PETRI_PLACES=480, PETRI_TRANSITIONS=448} [2024-06-28 00:10:41,965 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 450 predicate places. [2024-06-28 00:10:41,965 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 448 transitions, 5514 flow [2024-06-28 00:10:41,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:41,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:41,965 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 00:10:41,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 00:10:41,966 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:41,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:41,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1141126839, now seen corresponding path program 15 times [2024-06-28 00:10:41,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:41,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661427909] [2024-06-28 00:10:41,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:41,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:44,100 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 00:10:44,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:44,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661427909] [2024-06-28 00:10:44,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661427909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:44,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:44,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:44,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812322623] [2024-06-28 00:10:44,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:44,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:44,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:44,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:44,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:44,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:10:44,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 448 transitions, 5514 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:44,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:44,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:10:44,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:45,354 INFO L124 PetriNetUnfolderBase]: 1191/2105 cut-off events. [2024-06-28 00:10:45,355 INFO L125 PetriNetUnfolderBase]: For 357646/357646 co-relation queries the response was YES. [2024-06-28 00:10:45,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15954 conditions, 2105 events. 1191/2105 cut-off events. For 357646/357646 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 12716 event pairs, 251 based on Foata normal form. 2/2105 useless extension candidates. Maximal degree in co-relation 15754. Up to 1977 conditions per place. [2024-06-28 00:10:45,387 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 424 selfloop transitions, 40 changer transitions 0/466 dead transitions. [2024-06-28 00:10:45,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 466 transitions, 6813 flow [2024-06-28 00:10:45,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:45,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:45,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-28 00:10:45,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-28 00:10:45,389 INFO L175 Difference]: Start difference. First operand has 480 places, 448 transitions, 5514 flow. Second operand 12 states and 137 transitions. [2024-06-28 00:10:45,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 466 transitions, 6813 flow [2024-06-28 00:10:47,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 466 transitions, 6727 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-28 00:10:47,387 INFO L231 Difference]: Finished difference. Result has 483 places, 448 transitions, 5513 flow [2024-06-28 00:10:47,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5428, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5513, PETRI_PLACES=483, PETRI_TRANSITIONS=448} [2024-06-28 00:10:47,387 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 453 predicate places. [2024-06-28 00:10:47,388 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 448 transitions, 5513 flow [2024-06-28 00:10:47,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:47,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:47,388 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 00:10:47,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 00:10:47,388 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:47,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:47,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1141132574, now seen corresponding path program 17 times [2024-06-28 00:10:47,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:47,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174038704] [2024-06-28 00:10:47,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:47,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:49,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:49,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:49,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174038704] [2024-06-28 00:10:49,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174038704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:49,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:49,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:49,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108957606] [2024-06-28 00:10:49,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:49,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:49,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:49,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:49,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:49,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:10:49,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 448 transitions, 5513 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:49,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:49,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:10:49,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:50,416 INFO L124 PetriNetUnfolderBase]: 1195/2113 cut-off events. [2024-06-28 00:10:50,416 INFO L125 PetriNetUnfolderBase]: For 362010/362010 co-relation queries the response was YES. [2024-06-28 00:10:50,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16026 conditions, 2113 events. 1195/2113 cut-off events. For 362010/362010 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 12792 event pairs, 266 based on Foata normal form. 2/2113 useless extension candidates. Maximal degree in co-relation 15825. Up to 2063 conditions per place. [2024-06-28 00:10:50,451 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 435 selfloop transitions, 25 changer transitions 0/462 dead transitions. [2024-06-28 00:10:50,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 462 transitions, 6543 flow [2024-06-28 00:10:50,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:10:50,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:10:50,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 00:10:50,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-28 00:10:50,453 INFO L175 Difference]: Start difference. First operand has 483 places, 448 transitions, 5513 flow. Second operand 11 states and 119 transitions. [2024-06-28 00:10:50,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 462 transitions, 6543 flow [2024-06-28 00:10:52,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 462 transitions, 6353 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-28 00:10:52,370 INFO L231 Difference]: Finished difference. Result has 484 places, 451 transitions, 5470 flow [2024-06-28 00:10:52,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5325, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5470, PETRI_PLACES=484, PETRI_TRANSITIONS=451} [2024-06-28 00:10:52,371 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 454 predicate places. [2024-06-28 00:10:52,371 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 451 transitions, 5470 flow [2024-06-28 00:10:52,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:52,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:52,371 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 00:10:52,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 00:10:52,371 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:52,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:52,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1335071984, now seen corresponding path program 18 times [2024-06-28 00:10:52,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:52,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732057549] [2024-06-28 00:10:52,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:52,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:54,969 INFO 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 00:10:54,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:54,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732057549] [2024-06-28 00:10:54,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732057549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:54,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:54,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:54,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590790806] [2024-06-28 00:10:54,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:54,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:54,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:54,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:54,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:55,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:10:55,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 451 transitions, 5470 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:55,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:55,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:10:55,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:55,876 INFO L124 PetriNetUnfolderBase]: 1199/2121 cut-off events. [2024-06-28 00:10:55,876 INFO L125 PetriNetUnfolderBase]: For 366327/366327 co-relation queries the response was YES. [2024-06-28 00:10:55,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16050 conditions, 2121 events. 1199/2121 cut-off events. For 366327/366327 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 12838 event pairs, 254 based on Foata normal form. 2/2121 useless extension candidates. Maximal degree in co-relation 15847. Up to 1983 conditions per place. [2024-06-28 00:10:55,913 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 418 selfloop transitions, 49 changer transitions 0/469 dead transitions. [2024-06-28 00:10:55,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 469 transitions, 6578 flow [2024-06-28 00:10:55,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:10:55,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:10:55,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 00:10:55,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-28 00:10:55,915 INFO L175 Difference]: Start difference. First operand has 484 places, 451 transitions, 5470 flow. Second operand 11 states and 125 transitions. [2024-06-28 00:10:55,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 469 transitions, 6578 flow [2024-06-28 00:10:57,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 469 transitions, 6471 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-28 00:10:57,957 INFO L231 Difference]: Finished difference. Result has 487 places, 456 transitions, 5619 flow [2024-06-28 00:10:57,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5363, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5619, PETRI_PLACES=487, PETRI_TRANSITIONS=456} [2024-06-28 00:10:57,958 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 457 predicate places. [2024-06-28 00:10:57,958 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 456 transitions, 5619 flow [2024-06-28 00:10:57,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:57,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:57,958 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 00:10:57,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 00:10:57,958 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:57,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:57,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1133507783, now seen corresponding path program 16 times [2024-06-28 00:10:57,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:57,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095446959] [2024-06-28 00:10:57,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:57,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:00,298 INFO 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 00:11:00,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:00,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095446959] [2024-06-28 00:11:00,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095446959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:00,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:00,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:11:00,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136756178] [2024-06-28 00:11:00,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:00,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:11:00,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:00,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:11:00,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:11:00,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:00,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 456 transitions, 5619 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:00,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:00,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:00,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:01,250 INFO L124 PetriNetUnfolderBase]: 1203/2129 cut-off events. [2024-06-28 00:11:01,250 INFO L125 PetriNetUnfolderBase]: For 372110/372110 co-relation queries the response was YES. [2024-06-28 00:11:01,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16201 conditions, 2129 events. 1203/2129 cut-off events. For 372110/372110 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 12910 event pairs, 264 based on Foata normal form. 2/2129 useless extension candidates. Maximal degree in co-relation 15996. Up to 2065 conditions per place. [2024-06-28 00:11:01,283 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 443 selfloop transitions, 25 changer transitions 0/470 dead transitions. [2024-06-28 00:11:01,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 470 transitions, 6641 flow [2024-06-28 00:11:01,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:11:01,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:11:01,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 00:11:01,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-28 00:11:01,284 INFO L175 Difference]: Start difference. First operand has 487 places, 456 transitions, 5619 flow. Second operand 11 states and 119 transitions. [2024-06-28 00:11:01,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 470 transitions, 6641 flow [2024-06-28 00:11:03,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 470 transitions, 6501 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-28 00:11:03,135 INFO L231 Difference]: Finished difference. Result has 491 places, 457 transitions, 5587 flow [2024-06-28 00:11:03,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5479, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5587, PETRI_PLACES=491, PETRI_TRANSITIONS=457} [2024-06-28 00:11:03,135 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 461 predicate places. [2024-06-28 00:11:03,136 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 457 transitions, 5587 flow [2024-06-28 00:11:03,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:03,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:03,136 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 00:11:03,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 00:11:03,136 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:03,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:03,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1335066249, now seen corresponding path program 16 times [2024-06-28 00:11:03,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:03,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586856304] [2024-06-28 00:11:03,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:03,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:05,330 INFO 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 00:11:05,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:05,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586856304] [2024-06-28 00:11:05,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586856304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:05,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:05,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:05,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637074818] [2024-06-28 00:11:05,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:05,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:05,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:05,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:05,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:05,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:05,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 457 transitions, 5587 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:05,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:05,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:05,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:06,525 INFO L124 PetriNetUnfolderBase]: 1199/2123 cut-off events. [2024-06-28 00:11:06,525 INFO L125 PetriNetUnfolderBase]: For 354247/354247 co-relation queries the response was YES. [2024-06-28 00:11:06,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15811 conditions, 2123 events. 1199/2123 cut-off events. For 354247/354247 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 12900 event pairs, 248 based on Foata normal form. 2/2123 useless extension candidates. Maximal degree in co-relation 15606. Up to 1798 conditions per place. [2024-06-28 00:11:06,558 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 394 selfloop transitions, 79 changer transitions 0/475 dead transitions. [2024-06-28 00:11:06,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 475 transitions, 7171 flow [2024-06-28 00:11:06,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:06,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:06,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-28 00:11:06,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3844086021505376 [2024-06-28 00:11:06,560 INFO L175 Difference]: Start difference. First operand has 491 places, 457 transitions, 5587 flow. Second operand 12 states and 143 transitions. [2024-06-28 00:11:06,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 475 transitions, 7171 flow [2024-06-28 00:11:08,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 475 transitions, 7055 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-28 00:11:08,420 INFO L231 Difference]: Finished difference. Result has 494 places, 457 transitions, 5634 flow [2024-06-28 00:11:08,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5471, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5634, PETRI_PLACES=494, PETRI_TRANSITIONS=457} [2024-06-28 00:11:08,420 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 464 predicate places. [2024-06-28 00:11:08,420 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 457 transitions, 5634 flow [2024-06-28 00:11:08,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:08,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:08,421 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 00:11:08,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 00:11:08,421 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:08,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:08,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1340582234, now seen corresponding path program 19 times [2024-06-28 00:11:08,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:08,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105549876] [2024-06-28 00:11:08,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:08,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:10,331 INFO 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 00:11:10,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:10,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105549876] [2024-06-28 00:11:10,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105549876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:10,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:10,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:11:10,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80787382] [2024-06-28 00:11:10,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:10,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:11:10,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:10,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:11:10,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:11:10,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:10,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 457 transitions, 5634 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:10,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:10,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:10,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:11,401 INFO L124 PetriNetUnfolderBase]: 1214/2152 cut-off events. [2024-06-28 00:11:11,402 INFO L125 PetriNetUnfolderBase]: For 380954/380954 co-relation queries the response was YES. [2024-06-28 00:11:11,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16386 conditions, 2152 events. 1214/2152 cut-off events. For 380954/380954 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 13094 event pairs, 272 based on Foata normal form. 2/2152 useless extension candidates. Maximal degree in co-relation 16180. Up to 2010 conditions per place. [2024-06-28 00:11:11,434 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 420 selfloop transitions, 52 changer transitions 1/475 dead transitions. [2024-06-28 00:11:11,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 475 transitions, 6984 flow [2024-06-28 00:11:11,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:11:11,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:11:11,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 00:11:11,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-28 00:11:11,435 INFO L175 Difference]: Start difference. First operand has 494 places, 457 transitions, 5634 flow. Second operand 11 states and 129 transitions. [2024-06-28 00:11:11,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 475 transitions, 6984 flow [2024-06-28 00:11:13,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 475 transitions, 6759 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-28 00:11:13,328 INFO L231 Difference]: Finished difference. Result has 493 places, 460 transitions, 5603 flow [2024-06-28 00:11:13,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5409, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5603, PETRI_PLACES=493, PETRI_TRANSITIONS=460} [2024-06-28 00:11:13,329 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 463 predicate places. [2024-06-28 00:11:13,329 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 460 transitions, 5603 flow [2024-06-28 00:11:13,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:13,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:13,329 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 00:11:13,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 00:11:13,330 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:13,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:13,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1872291930, now seen corresponding path program 20 times [2024-06-28 00:11:13,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:13,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678626724] [2024-06-28 00:11:13,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:13,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:14,987 INFO 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 00:11:14,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:14,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678626724] [2024-06-28 00:11:14,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678626724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:14,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:14,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:11:14,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989252611] [2024-06-28 00:11:14,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:14,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:11:14,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:14,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:11:14,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:11:15,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:15,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 460 transitions, 5603 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:15,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:15,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:15,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:16,128 INFO L124 PetriNetUnfolderBase]: 1221/2165 cut-off events. [2024-06-28 00:11:16,128 INFO L125 PetriNetUnfolderBase]: For 386125/386125 co-relation queries the response was YES. [2024-06-28 00:11:16,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16420 conditions, 2165 events. 1221/2165 cut-off events. For 386125/386125 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 13210 event pairs, 274 based on Foata normal form. 2/2165 useless extension candidates. Maximal degree in co-relation 16213. Up to 2057 conditions per place. [2024-06-28 00:11:16,158 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 423 selfloop transitions, 50 changer transitions 1/476 dead transitions. [2024-06-28 00:11:16,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 476 transitions, 6655 flow [2024-06-28 00:11:16,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:11:16,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:11:16,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 00:11:16,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 00:11:16,160 INFO L175 Difference]: Start difference. First operand has 493 places, 460 transitions, 5603 flow. Second operand 11 states and 127 transitions. [2024-06-28 00:11:16,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 476 transitions, 6655 flow [2024-06-28 00:11:18,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 476 transitions, 6501 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 00:11:18,212 INFO L231 Difference]: Finished difference. Result has 497 places, 463 transitions, 5627 flow [2024-06-28 00:11:18,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5467, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5627, PETRI_PLACES=497, PETRI_TRANSITIONS=463} [2024-06-28 00:11:18,213 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 467 predicate places. [2024-06-28 00:11:18,213 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 463 transitions, 5627 flow [2024-06-28 00:11:18,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:18,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:18,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:18,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 00:11:18,214 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:18,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:18,214 INFO L85 PathProgramCache]: Analyzing trace with hash 2079371961, now seen corresponding path program 17 times [2024-06-28 00:11:18,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:18,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248673702] [2024-06-28 00:11:18,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:18,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:19,874 INFO 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 00:11:19,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:19,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248673702] [2024-06-28 00:11:19,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248673702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:19,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:19,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:11:19,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796287420] [2024-06-28 00:11:19,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:19,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:11:19,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:19,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:11:19,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:11:20,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:20,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 463 transitions, 5627 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 00:11:20,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:20,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:20,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:20,732 INFO L124 PetriNetUnfolderBase]: 1225/2173 cut-off events. [2024-06-28 00:11:20,732 INFO L125 PetriNetUnfolderBase]: For 391434/391434 co-relation queries the response was YES. [2024-06-28 00:11:20,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16503 conditions, 2173 events. 1225/2173 cut-off events. For 391434/391434 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 13292 event pairs, 272 based on Foata normal form. 2/2173 useless extension candidates. Maximal degree in co-relation 16295. Up to 2109 conditions per place. [2024-06-28 00:11:20,765 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 451 selfloop transitions, 24 changer transitions 0/477 dead transitions. [2024-06-28 00:11:20,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 477 transitions, 6663 flow [2024-06-28 00:11:20,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:11:20,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:11:20,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 00:11:20,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 00:11:20,767 INFO L175 Difference]: Start difference. First operand has 497 places, 463 transitions, 5627 flow. Second operand 11 states and 118 transitions. [2024-06-28 00:11:20,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 477 transitions, 6663 flow [2024-06-28 00:11:22,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 477 transitions, 6551 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 00:11:22,762 INFO L231 Difference]: Finished difference. Result has 500 places, 464 transitions, 5623 flow [2024-06-28 00:11:22,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5515, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5623, PETRI_PLACES=500, PETRI_TRANSITIONS=464} [2024-06-28 00:11:22,763 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 470 predicate places. [2024-06-28 00:11:22,763 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 464 transitions, 5623 flow [2024-06-28 00:11:22,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 00:11:22,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:22,763 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 00:11:22,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 00:11:22,764 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:22,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:22,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1340434364, now seen corresponding path program 21 times [2024-06-28 00:11:22,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:22,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920240730] [2024-06-28 00:11:22,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:22,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:25,245 INFO 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 00:11:25,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:25,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920240730] [2024-06-28 00:11:25,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920240730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:25,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:25,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:11:25,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691711088] [2024-06-28 00:11:25,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:25,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:11:25,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:25,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:11:25,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:11:25,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:25,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 464 transitions, 5623 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:25,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:25,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:25,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:26,142 INFO L124 PetriNetUnfolderBase]: 1222/2168 cut-off events. [2024-06-28 00:11:26,142 INFO L125 PetriNetUnfolderBase]: For 373667/373667 co-relation queries the response was YES. [2024-06-28 00:11:26,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16134 conditions, 2168 events. 1222/2168 cut-off events. For 373667/373667 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 13269 event pairs, 263 based on Foata normal form. 2/2168 useless extension candidates. Maximal degree in co-relation 15925. Up to 2030 conditions per place. [2024-06-28 00:11:26,175 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 420 selfloop transitions, 56 changer transitions 0/478 dead transitions. [2024-06-28 00:11:26,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 478 transitions, 6611 flow [2024-06-28 00:11:26,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:11:26,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:11:26,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 00:11:26,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 00:11:26,183 INFO L175 Difference]: Start difference. First operand has 500 places, 464 transitions, 5623 flow. Second operand 11 states and 126 transitions. [2024-06-28 00:11:26,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 478 transitions, 6611 flow [2024-06-28 00:11:28,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 478 transitions, 6503 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-28 00:11:28,184 INFO L231 Difference]: Finished difference. Result has 502 places, 464 transitions, 5631 flow [2024-06-28 00:11:28,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5515, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5631, PETRI_PLACES=502, PETRI_TRANSITIONS=464} [2024-06-28 00:11:28,184 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 472 predicate places. [2024-06-28 00:11:28,184 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 464 transitions, 5631 flow [2024-06-28 00:11:28,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:28,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:28,185 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 00:11:28,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 00:11:28,185 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:28,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:28,185 INFO L85 PathProgramCache]: Analyzing trace with hash 585605449, now seen corresponding path program 17 times [2024-06-28 00:11:28,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:28,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720140121] [2024-06-28 00:11:28,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:28,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:30,405 INFO 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 00:11:30,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:30,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720140121] [2024-06-28 00:11:30,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720140121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:30,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:30,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:30,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759875886] [2024-06-28 00:11:30,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:30,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:30,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:30,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:30,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:30,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:30,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 464 transitions, 5631 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:30,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:30,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:30,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:31,640 INFO L124 PetriNetUnfolderBase]: 1218/2162 cut-off events. [2024-06-28 00:11:31,640 INFO L125 PetriNetUnfolderBase]: For 353814/353814 co-relation queries the response was YES. [2024-06-28 00:11:31,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15783 conditions, 2162 events. 1218/2162 cut-off events. For 353814/353814 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 13216 event pairs, 247 based on Foata normal form. 2/2162 useless extension candidates. Maximal degree in co-relation 15573. Up to 1837 conditions per place. [2024-06-28 00:11:31,677 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 388 selfloop transitions, 90 changer transitions 0/480 dead transitions. [2024-06-28 00:11:31,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 480 transitions, 6935 flow [2024-06-28 00:11:31,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:31,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:31,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-28 00:11:31,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 00:11:31,679 INFO L175 Difference]: Start difference. First operand has 502 places, 464 transitions, 5631 flow. Second operand 12 states and 138 transitions. [2024-06-28 00:11:31,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 480 transitions, 6935 flow [2024-06-28 00:11:33,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 480 transitions, 6816 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 00:11:33,743 INFO L231 Difference]: Finished difference. Result has 506 places, 464 transitions, 5697 flow [2024-06-28 00:11:33,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5512, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5697, PETRI_PLACES=506, PETRI_TRANSITIONS=464} [2024-06-28 00:11:33,750 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 476 predicate places. [2024-06-28 00:11:33,750 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 464 transitions, 5697 flow [2024-06-28 00:11:33,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:33,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:33,750 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 00:11:33,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 00:11:33,751 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:33,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:33,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1188112695, now seen corresponding path program 18 times [2024-06-28 00:11:33,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:33,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081199075] [2024-06-28 00:11:33,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:33,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:35,808 INFO 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 00:11:35,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:35,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081199075] [2024-06-28 00:11:35,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081199075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:35,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:35,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:35,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779722948] [2024-06-28 00:11:35,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:35,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:35,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:35,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:35,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:35,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:35,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 464 transitions, 5697 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:35,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:35,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:35,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:36,884 INFO L124 PetriNetUnfolderBase]: 1214/2156 cut-off events. [2024-06-28 00:11:36,884 INFO L125 PetriNetUnfolderBase]: For 335518/335518 co-relation queries the response was YES. [2024-06-28 00:11:36,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15553 conditions, 2156 events. 1214/2156 cut-off events. For 335518/335518 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 13185 event pairs, 267 based on Foata normal form. 2/2156 useless extension candidates. Maximal degree in co-relation 15342. Up to 2082 conditions per place. [2024-06-28 00:11:36,917 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 449 selfloop transitions, 28 changer transitions 0/479 dead transitions. [2024-06-28 00:11:36,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 479 transitions, 6693 flow [2024-06-28 00:11:36,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:36,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:36,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-28 00:11:36,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-28 00:11:36,918 INFO L175 Difference]: Start difference. First operand has 506 places, 464 transitions, 5697 flow. Second operand 12 states and 130 transitions. [2024-06-28 00:11:36,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 479 transitions, 6693 flow [2024-06-28 00:11:38,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 479 transitions, 6441 flow, removed 13 selfloop flow, removed 12 redundant places. [2024-06-28 00:11:38,700 INFO L231 Difference]: Finished difference. Result has 506 places, 464 transitions, 5506 flow [2024-06-28 00:11:38,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5445, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5506, PETRI_PLACES=506, PETRI_TRANSITIONS=464} [2024-06-28 00:11:38,701 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 476 predicate places. [2024-06-28 00:11:38,701 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 464 transitions, 5506 flow [2024-06-28 00:11:38,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:38,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:38,701 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 00:11:38,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 00:11:38,702 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:38,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:38,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1205898018, now seen corresponding path program 22 times [2024-06-28 00:11:38,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:38,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478527109] [2024-06-28 00:11:38,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:38,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:39,468 INFO 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 00:11:39,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:39,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478527109] [2024-06-28 00:11:39,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478527109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:39,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:39,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:11:39,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233805735] [2024-06-28 00:11:39,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:39,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:11:39,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:39,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:11:39,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:11:39,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:11:39,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 464 transitions, 5506 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 00:11:39,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:39,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:11:39,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:40,458 INFO L124 PetriNetUnfolderBase]: 1124/2075 cut-off events. [2024-06-28 00:11:40,458 INFO L125 PetriNetUnfolderBase]: For 371180/371183 co-relation queries the response was YES. [2024-06-28 00:11:40,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15056 conditions, 2075 events. 1124/2075 cut-off events. For 371180/371183 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 13249 event pairs, 151 based on Foata normal form. 5/2077 useless extension candidates. Maximal degree in co-relation 14845. Up to 1313 conditions per place. [2024-06-28 00:11:40,495 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 265 selfloop transitions, 57 changer transitions 0/494 dead transitions. [2024-06-28 00:11:40,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 494 transitions, 6664 flow [2024-06-28 00:11:40,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:11:40,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:11:40,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 181 transitions. [2024-06-28 00:11:40,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41705069124423966 [2024-06-28 00:11:40,496 INFO L175 Difference]: Start difference. First operand has 506 places, 464 transitions, 5506 flow. Second operand 14 states and 181 transitions. [2024-06-28 00:11:40,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 494 transitions, 6664 flow [2024-06-28 00:11:42,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 494 transitions, 6580 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 00:11:42,483 INFO L231 Difference]: Finished difference. Result has 508 places, 466 transitions, 5614 flow [2024-06-28 00:11:42,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5422, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5614, PETRI_PLACES=508, PETRI_TRANSITIONS=466} [2024-06-28 00:11:42,484 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 478 predicate places. [2024-06-28 00:11:42,484 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 466 transitions, 5614 flow [2024-06-28 00:11:42,484 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 00:11:42,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:42,484 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 00:11:42,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 00:11:42,485 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:42,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:42,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1295667293, now seen corresponding path program 19 times [2024-06-28 00:11:42,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:42,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645676834] [2024-06-28 00:11:42,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:42,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:44,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:44,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:44,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645676834] [2024-06-28 00:11:44,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645676834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:44,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:44,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:11:44,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177507109] [2024-06-28 00:11:44,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:44,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:11:44,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:44,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:11:44,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:11:44,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:44,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 466 transitions, 5614 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:44,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:44,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:44,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:45,978 INFO L124 PetriNetUnfolderBase]: 1221/2171 cut-off events. [2024-06-28 00:11:45,979 INFO L125 PetriNetUnfolderBase]: For 344632/344632 co-relation queries the response was YES. [2024-06-28 00:11:46,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15597 conditions, 2171 events. 1221/2171 cut-off events. For 344632/344632 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 13302 event pairs, 192 based on Foata normal form. 2/2171 useless extension candidates. Maximal degree in co-relation 15385. Up to 1920 conditions per place. [2024-06-28 00:11:46,010 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 425 selfloop transitions, 65 changer transitions 0/492 dead transitions. [2024-06-28 00:11:46,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 492 transitions, 7044 flow [2024-06-28 00:11:46,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:11:46,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:11:46,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 154 transitions. [2024-06-28 00:11:46,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38213399503722084 [2024-06-28 00:11:46,012 INFO L175 Difference]: Start difference. First operand has 508 places, 466 transitions, 5614 flow. Second operand 13 states and 154 transitions. [2024-06-28 00:11:46,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 492 transitions, 7044 flow [2024-06-28 00:11:47,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 492 transitions, 6915 flow, removed 32 selfloop flow, removed 11 redundant places. [2024-06-28 00:11:47,670 INFO L231 Difference]: Finished difference. Result has 510 places, 466 transitions, 5622 flow [2024-06-28 00:11:47,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5487, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5622, PETRI_PLACES=510, PETRI_TRANSITIONS=466} [2024-06-28 00:11:47,670 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 480 predicate places. [2024-06-28 00:11:47,670 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 466 transitions, 5622 flow [2024-06-28 00:11:47,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:47,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:47,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:47,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 00:11:47,671 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:47,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:47,671 INFO L85 PathProgramCache]: Analyzing trace with hash -995807398, now seen corresponding path program 23 times [2024-06-28 00:11:47,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:47,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55571906] [2024-06-28 00:11:47,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:47,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:49,980 INFO 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 00:11:49,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:49,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55571906] [2024-06-28 00:11:49,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55571906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:49,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:49,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:49,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018758963] [2024-06-28 00:11:49,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:49,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:49,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:49,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:49,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:50,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:50,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 466 transitions, 5622 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:50,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:50,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:50,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:51,712 INFO L124 PetriNetUnfolderBase]: 1236/2199 cut-off events. [2024-06-28 00:11:51,712 INFO L125 PetriNetUnfolderBase]: For 368633/368633 co-relation queries the response was YES. [2024-06-28 00:11:51,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16143 conditions, 2199 events. 1236/2199 cut-off events. For 368633/368633 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 13544 event pairs, 205 based on Foata normal form. 2/2199 useless extension candidates. Maximal degree in co-relation 15930. Up to 2053 conditions per place. [2024-06-28 00:11:51,750 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 456 selfloop transitions, 39 changer transitions 0/497 dead transitions. [2024-06-28 00:11:51,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 497 transitions, 7107 flow [2024-06-28 00:11:51,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:11:51,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:11:51,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 159 transitions. [2024-06-28 00:11:51,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3663594470046083 [2024-06-28 00:11:51,752 INFO L175 Difference]: Start difference. First operand has 510 places, 466 transitions, 5622 flow. Second operand 14 states and 159 transitions. [2024-06-28 00:11:51,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 497 transitions, 7107 flow [2024-06-28 00:11:53,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 497 transitions, 6970 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-06-28 00:11:53,922 INFO L231 Difference]: Finished difference. Result has 514 places, 472 transitions, 5707 flow [2024-06-28 00:11:53,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5489, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5707, PETRI_PLACES=514, PETRI_TRANSITIONS=472} [2024-06-28 00:11:53,922 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 484 predicate places. [2024-06-28 00:11:53,922 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 472 transitions, 5707 flow [2024-06-28 00:11:53,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:53,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:53,923 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 00:11:53,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 00:11:53,923 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:53,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:53,924 INFO L85 PathProgramCache]: Analyzing trace with hash -2874043, now seen corresponding path program 20 times [2024-06-28 00:11:53,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:53,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625999376] [2024-06-28 00:11:53,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:53,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:57,292 INFO 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 00:11:57,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:57,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625999376] [2024-06-28 00:11:57,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625999376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:57,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:57,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:57,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213939963] [2024-06-28 00:11:57,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:57,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:57,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:57,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:57,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:57,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:57,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 472 transitions, 5707 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:57,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:57,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:57,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:58,797 INFO L124 PetriNetUnfolderBase]: 1232/2193 cut-off events. [2024-06-28 00:11:58,798 INFO L125 PetriNetUnfolderBase]: For 349370/349370 co-relation queries the response was YES. [2024-06-28 00:11:58,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15812 conditions, 2193 events. 1232/2193 cut-off events. For 349370/349370 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 13527 event pairs, 206 based on Foata normal form. 2/2193 useless extension candidates. Maximal degree in co-relation 15596. Up to 2066 conditions per place. [2024-06-28 00:11:58,831 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 444 selfloop transitions, 45 changer transitions 0/491 dead transitions. [2024-06-28 00:11:58,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 491 transitions, 6737 flow [2024-06-28 00:11:58,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:58,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:58,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-28 00:11:58,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-28 00:11:58,833 INFO L175 Difference]: Start difference. First operand has 514 places, 472 transitions, 5707 flow. Second operand 12 states and 141 transitions. [2024-06-28 00:11:58,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 491 transitions, 6737 flow [2024-06-28 00:12:00,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 491 transitions, 6628 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 00:12:00,771 INFO L231 Difference]: Finished difference. Result has 519 places, 472 transitions, 5693 flow [2024-06-28 00:12:00,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5598, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5693, PETRI_PLACES=519, PETRI_TRANSITIONS=472} [2024-06-28 00:12:00,771 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 489 predicate places. [2024-06-28 00:12:00,771 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 472 transitions, 5693 flow [2024-06-28 00:12:00,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:00,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:00,772 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 00:12:00,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 00:12:00,772 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:00,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:00,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1600026748, now seen corresponding path program 24 times [2024-06-28 00:12:00,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:00,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286857074] [2024-06-28 00:12:00,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:00,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:02,821 INFO 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 00:12:02,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:02,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286857074] [2024-06-28 00:12:02,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286857074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:02,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:02,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:02,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202884791] [2024-06-28 00:12:02,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:02,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:02,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:02,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:02,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:03,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:03,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 472 transitions, 5693 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:03,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:03,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:03,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:04,308 INFO L124 PetriNetUnfolderBase]: 1239/2206 cut-off events. [2024-06-28 00:12:04,309 INFO L125 PetriNetUnfolderBase]: For 352991/352991 co-relation queries the response was YES. [2024-06-28 00:12:04,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15867 conditions, 2206 events. 1239/2206 cut-off events. For 352991/352991 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 13585 event pairs, 215 based on Foata normal form. 2/2206 useless extension candidates. Maximal degree in co-relation 15649. Up to 2092 conditions per place. [2024-06-28 00:12:04,343 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 450 selfloop transitions, 44 changer transitions 0/496 dead transitions. [2024-06-28 00:12:04,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 496 transitions, 6783 flow [2024-06-28 00:12:04,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:12:04,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:12:04,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 156 transitions. [2024-06-28 00:12:04,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35944700460829493 [2024-06-28 00:12:04,344 INFO L175 Difference]: Start difference. First operand has 519 places, 472 transitions, 5693 flow. Second operand 14 states and 156 transitions. [2024-06-28 00:12:04,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 496 transitions, 6783 flow [2024-06-28 00:12:06,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 496 transitions, 6681 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-28 00:12:06,187 INFO L231 Difference]: Finished difference. Result has 522 places, 475 transitions, 5733 flow [2024-06-28 00:12:06,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5597, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5733, PETRI_PLACES=522, PETRI_TRANSITIONS=475} [2024-06-28 00:12:06,187 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 492 predicate places. [2024-06-28 00:12:06,187 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 475 transitions, 5733 flow [2024-06-28 00:12:06,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:06,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:06,188 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 00:12:06,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 00:12:06,188 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:06,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:06,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1599880738, now seen corresponding path program 25 times [2024-06-28 00:12:06,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:06,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281124624] [2024-06-28 00:12:06,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:06,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:08,045 INFO 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 00:12:08,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:08,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281124624] [2024-06-28 00:12:08,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281124624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:08,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:08,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:08,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345249874] [2024-06-28 00:12:08,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:08,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:08,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:08,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:08,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:08,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:08,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 475 transitions, 5733 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:08,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:08,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:08,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:09,296 INFO L124 PetriNetUnfolderBase]: 1243/2214 cut-off events. [2024-06-28 00:12:09,297 INFO L125 PetriNetUnfolderBase]: For 357626/357626 co-relation queries the response was YES. [2024-06-28 00:12:09,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15947 conditions, 2214 events. 1243/2214 cut-off events. For 357626/357626 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 13710 event pairs, 211 based on Foata normal form. 2/2214 useless extension candidates. Maximal degree in co-relation 15728. Up to 2086 conditions per place. [2024-06-28 00:12:09,331 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 451 selfloop transitions, 45 changer transitions 0/498 dead transitions. [2024-06-28 00:12:09,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 498 transitions, 6805 flow [2024-06-28 00:12:09,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:12:09,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:12:09,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 158 transitions. [2024-06-28 00:12:09,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3640552995391705 [2024-06-28 00:12:09,333 INFO L175 Difference]: Start difference. First operand has 522 places, 475 transitions, 5733 flow. Second operand 14 states and 158 transitions. [2024-06-28 00:12:09,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 498 transitions, 6805 flow [2024-06-28 00:12:11,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 498 transitions, 6702 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-28 00:12:11,122 INFO L231 Difference]: Finished difference. Result has 525 places, 476 transitions, 5750 flow [2024-06-28 00:12:11,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5630, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5750, PETRI_PLACES=525, PETRI_TRANSITIONS=476} [2024-06-28 00:12:11,123 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 495 predicate places. [2024-06-28 00:12:11,123 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 476 transitions, 5750 flow [2024-06-28 00:12:11,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:11,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:11,123 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 00:12:11,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 00:12:11,123 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:11,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:11,124 INFO L85 PathProgramCache]: Analyzing trace with hash -876766468, now seen corresponding path program 26 times [2024-06-28 00:12:11,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:11,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888861489] [2024-06-28 00:12:11,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:11,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:13,391 INFO 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 00:12:13,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:13,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888861489] [2024-06-28 00:12:13,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888861489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:13,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:13,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:13,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667086922] [2024-06-28 00:12:13,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:13,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:13,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:13,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:13,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:13,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:13,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 476 transitions, 5750 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:13,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:13,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:13,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:14,710 INFO L124 PetriNetUnfolderBase]: 1250/2227 cut-off events. [2024-06-28 00:12:14,710 INFO L125 PetriNetUnfolderBase]: For 362387/362387 co-relation queries the response was YES. [2024-06-28 00:12:14,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16058 conditions, 2227 events. 1250/2227 cut-off events. For 362387/362387 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 13803 event pairs, 217 based on Foata normal form. 2/2227 useless extension candidates. Maximal degree in co-relation 15838. Up to 2112 conditions per place. [2024-06-28 00:12:14,759 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 450 selfloop transitions, 45 changer transitions 0/497 dead transitions. [2024-06-28 00:12:14,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 497 transitions, 6836 flow [2024-06-28 00:12:14,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:12:14,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:12:14,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 00:12:14,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:12:14,761 INFO L175 Difference]: Start difference. First operand has 525 places, 476 transitions, 5750 flow. Second operand 11 states and 132 transitions. [2024-06-28 00:12:14,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 497 transitions, 6836 flow [2024-06-28 00:12:16,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 497 transitions, 6726 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-28 00:12:16,686 INFO L231 Difference]: Finished difference. Result has 524 places, 479 transitions, 5786 flow [2024-06-28 00:12:16,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5644, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5786, PETRI_PLACES=524, PETRI_TRANSITIONS=479} [2024-06-28 00:12:16,686 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 494 predicate places. [2024-06-28 00:12:16,686 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 479 transitions, 5786 flow [2024-06-28 00:12:16,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:16,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:16,687 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 00:12:16,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 00:12:16,687 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:16,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:16,687 INFO L85 PathProgramCache]: Analyzing trace with hash -7494438, now seen corresponding path program 27 times [2024-06-28 00:12:16,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:16,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784702122] [2024-06-28 00:12:16,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:16,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:18,619 INFO 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 00:12:18,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:18,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784702122] [2024-06-28 00:12:18,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784702122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:18,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:18,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:18,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377494513] [2024-06-28 00:12:18,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:18,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:18,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:18,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:18,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:18,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:18,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 479 transitions, 5786 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:18,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:18,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:18,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:19,844 INFO L124 PetriNetUnfolderBase]: 1254/2235 cut-off events. [2024-06-28 00:12:19,844 INFO L125 PetriNetUnfolderBase]: For 366834/366834 co-relation queries the response was YES. [2024-06-28 00:12:19,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16123 conditions, 2235 events. 1254/2235 cut-off events. For 366834/366834 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 13867 event pairs, 221 based on Foata normal form. 2/2235 useless extension candidates. Maximal degree in co-relation 15903. Up to 2120 conditions per place. [2024-06-28 00:12:19,875 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 452 selfloop transitions, 44 changer transitions 0/498 dead transitions. [2024-06-28 00:12:19,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 498 transitions, 6852 flow [2024-06-28 00:12:19,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:12:19,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:12:19,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 00:12:19,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-28 00:12:19,876 INFO L175 Difference]: Start difference. First operand has 524 places, 479 transitions, 5786 flow. Second operand 11 states and 133 transitions. [2024-06-28 00:12:19,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 498 transitions, 6852 flow [2024-06-28 00:12:21,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 498 transitions, 6741 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 00:12:21,863 INFO L231 Difference]: Finished difference. Result has 526 places, 480 transitions, 5797 flow [2024-06-28 00:12:21,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5675, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5797, PETRI_PLACES=526, PETRI_TRANSITIONS=480} [2024-06-28 00:12:21,864 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 496 predicate places. [2024-06-28 00:12:21,864 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 480 transitions, 5797 flow [2024-06-28 00:12:21,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:21,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:21,864 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 00:12:21,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 00:12:21,865 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:21,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:21,865 INFO L85 PathProgramCache]: Analyzing trace with hash -7640448, now seen corresponding path program 28 times [2024-06-28 00:12:21,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:21,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198256154] [2024-06-28 00:12:21,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:21,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:24,371 INFO 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 00:12:24,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:24,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198256154] [2024-06-28 00:12:24,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198256154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:24,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:24,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:24,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545467346] [2024-06-28 00:12:24,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:24,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:24,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:24,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:24,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:24,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:24,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 480 transitions, 5797 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:24,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:24,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:24,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:25,482 INFO L124 PetriNetUnfolderBase]: 1251/2230 cut-off events. [2024-06-28 00:12:25,482 INFO L125 PetriNetUnfolderBase]: For 345114/345114 co-relation queries the response was YES. [2024-06-28 00:12:25,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15755 conditions, 2230 events. 1251/2230 cut-off events. For 345114/345114 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 13812 event pairs, 222 based on Foata normal form. 2/2230 useless extension candidates. Maximal degree in co-relation 15535. Up to 2127 conditions per place. [2024-06-28 00:12:25,521 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 460 selfloop transitions, 37 changer transitions 0/499 dead transitions. [2024-06-28 00:12:25,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 499 transitions, 6839 flow [2024-06-28 00:12:25,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:12:25,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:12:25,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-28 00:12:25,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 00:12:25,522 INFO L175 Difference]: Start difference. First operand has 526 places, 480 transitions, 5797 flow. Second operand 12 states and 136 transitions. [2024-06-28 00:12:25,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 499 transitions, 6839 flow [2024-06-28 00:12:27,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 499 transitions, 6711 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 00:12:27,501 INFO L231 Difference]: Finished difference. Result has 529 places, 480 transitions, 5747 flow [2024-06-28 00:12:27,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5669, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5747, PETRI_PLACES=529, PETRI_TRANSITIONS=480} [2024-06-28 00:12:27,502 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 499 predicate places. [2024-06-28 00:12:27,502 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 480 transitions, 5747 flow [2024-06-28 00:12:27,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:27,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:27,502 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 00:12:27,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 00:12:27,502 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:27,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:27,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1650162563, now seen corresponding path program 18 times [2024-06-28 00:12:27,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:27,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916835466] [2024-06-28 00:12:27,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:27,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:29,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:29,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:29,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916835466] [2024-06-28 00:12:29,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916835466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:29,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:29,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:12:29,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100454] [2024-06-28 00:12:29,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:29,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:12:29,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:29,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:12:29,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:12:29,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:29,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 480 transitions, 5747 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:29,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:29,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:29,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:31,197 INFO L124 PetriNetUnfolderBase]: 1261/2248 cut-off events. [2024-06-28 00:12:31,197 INFO L125 PetriNetUnfolderBase]: For 349987/349987 co-relation queries the response was YES. [2024-06-28 00:12:31,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15865 conditions, 2248 events. 1261/2248 cut-off events. For 349987/349987 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 13940 event pairs, 132 based on Foata normal form. 2/2248 useless extension candidates. Maximal degree in co-relation 15643. Up to 1998 conditions per place. [2024-06-28 00:12:31,236 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 415 selfloop transitions, 92 changer transitions 0/509 dead transitions. [2024-06-28 00:12:31,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 509 transitions, 6905 flow [2024-06-28 00:12:31,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-28 00:12:31,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-28 00:12:31,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 174 transitions. [2024-06-28 00:12:31,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-28 00:12:31,238 INFO L175 Difference]: Start difference. First operand has 529 places, 480 transitions, 5747 flow. Second operand 15 states and 174 transitions. [2024-06-28 00:12:31,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 509 transitions, 6905 flow [2024-06-28 00:12:33,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 509 transitions, 6813 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 00:12:33,103 INFO L231 Difference]: Finished difference. Result has 533 places, 483 transitions, 5919 flow [2024-06-28 00:12:33,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5655, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5919, PETRI_PLACES=533, PETRI_TRANSITIONS=483} [2024-06-28 00:12:33,104 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 503 predicate places. [2024-06-28 00:12:33,104 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 483 transitions, 5919 flow [2024-06-28 00:12:33,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:33,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:33,104 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 00:12:33,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 00:12:33,104 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:33,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:33,105 INFO L85 PathProgramCache]: Analyzing trace with hash -238605666, now seen corresponding path program 29 times [2024-06-28 00:12:33,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:33,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905190534] [2024-06-28 00:12:33,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:33,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:36,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:36,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:36,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905190534] [2024-06-28 00:12:36,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905190534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:36,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:36,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:36,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021780439] [2024-06-28 00:12:36,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:36,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:36,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:36,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:36,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:36,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:36,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 483 transitions, 5919 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:36,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:36,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:36,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:37,647 INFO L124 PetriNetUnfolderBase]: 1265/2256 cut-off events. [2024-06-28 00:12:37,647 INFO L125 PetriNetUnfolderBase]: For 355097/355097 co-relation queries the response was YES. [2024-06-28 00:12:37,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16093 conditions, 2256 events. 1265/2256 cut-off events. For 355097/355097 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 13981 event pairs, 166 based on Foata normal form. 2/2256 useless extension candidates. Maximal degree in co-relation 15870. Up to 1833 conditions per place. [2024-06-28 00:12:37,691 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 366 selfloop transitions, 140 changer transitions 0/508 dead transitions. [2024-06-28 00:12:37,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 508 transitions, 7134 flow [2024-06-28 00:12:37,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:12:37,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:12:37,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-28 00:12:37,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-06-28 00:12:37,693 INFO L175 Difference]: Start difference. First operand has 533 places, 483 transitions, 5919 flow. Second operand 11 states and 142 transitions. [2024-06-28 00:12:37,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 508 transitions, 7134 flow [2024-06-28 00:12:39,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 508 transitions, 6917 flow, removed 28 selfloop flow, removed 12 redundant places. [2024-06-28 00:12:39,841 INFO L231 Difference]: Finished difference. Result has 533 places, 486 transitions, 6063 flow [2024-06-28 00:12:39,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5702, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6063, PETRI_PLACES=533, PETRI_TRANSITIONS=486} [2024-06-28 00:12:39,842 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 503 predicate places. [2024-06-28 00:12:39,842 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 486 transitions, 6063 flow [2024-06-28 00:12:39,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:39,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:39,842 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 00:12:39,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 00:12:39,842 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:39,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:39,844 INFO L85 PathProgramCache]: Analyzing trace with hash 185711305, now seen corresponding path program 21 times [2024-06-28 00:12:39,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:39,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620393456] [2024-06-28 00:12:39,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:39,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:42,377 INFO 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 00:12:42,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:42,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620393456] [2024-06-28 00:12:42,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620393456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:42,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:42,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:42,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549642385] [2024-06-28 00:12:42,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:42,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:42,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:42,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:42,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:42,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:42,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 486 transitions, 6063 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:42,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:42,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:42,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:43,854 INFO L124 PetriNetUnfolderBase]: 1323/2353 cut-off events. [2024-06-28 00:12:43,855 INFO L125 PetriNetUnfolderBase]: For 381529/381529 co-relation queries the response was YES. [2024-06-28 00:12:43,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16876 conditions, 2353 events. 1323/2353 cut-off events. For 381529/381529 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 14699 event pairs, 154 based on Foata normal form. 2/2353 useless extension candidates. Maximal degree in co-relation 16653. Up to 1242 conditions per place. [2024-06-28 00:12:43,894 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 298 selfloop transitions, 229 changer transitions 0/529 dead transitions. [2024-06-28 00:12:43,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 529 transitions, 8084 flow [2024-06-28 00:12:43,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:12:43,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:12:43,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-28 00:12:43,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-28 00:12:43,896 INFO L175 Difference]: Start difference. First operand has 533 places, 486 transitions, 6063 flow. Second operand 12 states and 160 transitions. [2024-06-28 00:12:43,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 529 transitions, 8084 flow [2024-06-28 00:12:45,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 529 transitions, 7752 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-28 00:12:45,754 INFO L231 Difference]: Finished difference. Result has 539 places, 499 transitions, 6351 flow [2024-06-28 00:12:45,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5731, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6351, PETRI_PLACES=539, PETRI_TRANSITIONS=499} [2024-06-28 00:12:45,755 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 509 predicate places. [2024-06-28 00:12:45,755 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 499 transitions, 6351 flow [2024-06-28 00:12:45,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:45,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:45,755 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 00:12:45,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 00:12:45,756 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:45,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:45,756 INFO L85 PathProgramCache]: Analyzing trace with hash 924901538, now seen corresponding path program 30 times [2024-06-28 00:12:45,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:45,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759261634] [2024-06-28 00:12:45,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:45,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:47,892 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 00:12:47,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:47,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759261634] [2024-06-28 00:12:47,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759261634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:47,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:47,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:47,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922375369] [2024-06-28 00:12:47,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:47,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:47,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:47,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:47,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:48,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:48,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 499 transitions, 6351 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:48,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:48,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:48,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:49,182 INFO L124 PetriNetUnfolderBase]: 1330/2366 cut-off events. [2024-06-28 00:12:49,183 INFO L125 PetriNetUnfolderBase]: For 386649/386649 co-relation queries the response was YES. [2024-06-28 00:12:49,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17317 conditions, 2366 events. 1330/2366 cut-off events. For 386649/386649 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 14806 event pairs, 177 based on Foata normal form. 2/2366 useless extension candidates. Maximal degree in co-relation 17090. Up to 1941 conditions per place. [2024-06-28 00:12:49,221 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 383 selfloop transitions, 140 changer transitions 0/525 dead transitions. [2024-06-28 00:12:49,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 525 transitions, 7600 flow [2024-06-28 00:12:49,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:12:49,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:12:49,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 00:12:49,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 00:12:49,223 INFO L175 Difference]: Start difference. First operand has 539 places, 499 transitions, 6351 flow. Second operand 11 states and 143 transitions. [2024-06-28 00:12:49,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 525 transitions, 7600 flow [2024-06-28 00:12:51,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 525 transitions, 7327 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 00:12:51,341 INFO L231 Difference]: Finished difference. Result has 545 places, 505 transitions, 6476 flow [2024-06-28 00:12:51,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6079, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6476, PETRI_PLACES=545, PETRI_TRANSITIONS=505} [2024-06-28 00:12:51,341 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 515 predicate places. [2024-06-28 00:12:51,341 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 505 transitions, 6476 flow [2024-06-28 00:12:51,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:51,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:51,342 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 00:12:51,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 00:12:51,342 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:51,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:51,342 INFO L85 PathProgramCache]: Analyzing trace with hash 180195320, now seen corresponding path program 31 times [2024-06-28 00:12:51,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:51,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409568091] [2024-06-28 00:12:51,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:51,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:53,330 INFO 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 00:12:53,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:53,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409568091] [2024-06-28 00:12:53,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409568091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:53,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:53,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:53,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387140073] [2024-06-28 00:12:53,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:53,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:53,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:53,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:53,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:53,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:53,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 505 transitions, 6476 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:53,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:53,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:53,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:54,627 INFO L124 PetriNetUnfolderBase]: 1345/2395 cut-off events. [2024-06-28 00:12:54,627 INFO L125 PetriNetUnfolderBase]: For 420935/420935 co-relation queries the response was YES. [2024-06-28 00:12:54,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17734 conditions, 2395 events. 1345/2395 cut-off events. For 420935/420935 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 15009 event pairs, 176 based on Foata normal form. 2/2395 useless extension candidates. Maximal degree in co-relation 17506. Up to 1941 conditions per place. [2024-06-28 00:12:54,669 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 385 selfloop transitions, 143 changer transitions 0/530 dead transitions. [2024-06-28 00:12:54,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 530 transitions, 8058 flow [2024-06-28 00:12:54,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:12:54,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:12:54,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-28 00:12:54,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252199413489736 [2024-06-28 00:12:54,670 INFO L175 Difference]: Start difference. First operand has 545 places, 505 transitions, 6476 flow. Second operand 11 states and 145 transitions. [2024-06-28 00:12:54,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 530 transitions, 8058 flow [2024-06-28 00:12:57,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 530 transitions, 7733 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-28 00:12:57,063 INFO L231 Difference]: Finished difference. Result has 551 places, 508 transitions, 6543 flow [2024-06-28 00:12:57,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6155, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6543, PETRI_PLACES=551, PETRI_TRANSITIONS=508} [2024-06-28 00:12:57,064 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 521 predicate places. [2024-06-28 00:12:57,064 INFO L495 AbstractCegarLoop]: Abstraction has has 551 places, 508 transitions, 6543 flow [2024-06-28 00:12:57,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:57,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:57,064 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 00:12:57,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-28 00:12:57,064 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:57,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:57,065 INFO L85 PathProgramCache]: Analyzing trace with hash 925051423, now seen corresponding path program 22 times [2024-06-28 00:12:57,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:57,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636410048] [2024-06-28 00:12:57,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:57,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:59,622 INFO 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 00:12:59,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:59,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636410048] [2024-06-28 00:12:59,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636410048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:59,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:59,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:59,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397632210] [2024-06-28 00:12:59,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:59,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:59,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:59,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:59,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:59,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:59,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 508 transitions, 6543 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:59,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:59,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:59,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:01,097 INFO L124 PetriNetUnfolderBase]: 1341/2389 cut-off events. [2024-06-28 00:13:01,097 INFO L125 PetriNetUnfolderBase]: For 397683/397683 co-relation queries the response was YES. [2024-06-28 00:13:01,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17340 conditions, 2389 events. 1341/2389 cut-off events. For 397683/397683 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 14984 event pairs, 156 based on Foata normal form. 2/2389 useless extension candidates. Maximal degree in co-relation 17110. Up to 1278 conditions per place. [2024-06-28 00:13:01,138 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 306 selfloop transitions, 227 changer transitions 0/535 dead transitions. [2024-06-28 00:13:01,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 535 transitions, 8096 flow [2024-06-28 00:13:01,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:13:01,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:13:01,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-28 00:13:01,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-28 00:13:01,140 INFO L175 Difference]: Start difference. First operand has 551 places, 508 transitions, 6543 flow. Second operand 12 states and 160 transitions. [2024-06-28 00:13:01,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 535 transitions, 8096 flow [2024-06-28 00:13:03,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 535 transitions, 7852 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 00:13:03,157 INFO L231 Difference]: Finished difference. Result has 557 places, 509 transitions, 6771 flow [2024-06-28 00:13:03,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6299, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6771, PETRI_PLACES=557, PETRI_TRANSITIONS=509} [2024-06-28 00:13:03,157 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 527 predicate places. [2024-06-28 00:13:03,158 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 509 transitions, 6771 flow [2024-06-28 00:13:03,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:03,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:03,158 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 00:13:03,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-28 00:13:03,158 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:03,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:03,159 INFO L85 PathProgramCache]: Analyzing trace with hash 925045688, now seen corresponding path program 32 times [2024-06-28 00:13:03,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:03,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912462046] [2024-06-28 00:13:03,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:03,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:06,104 INFO 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 00:13:06,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:06,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912462046] [2024-06-28 00:13:06,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912462046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:06,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:06,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:06,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820386933] [2024-06-28 00:13:06,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:06,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:06,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:06,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:06,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:06,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:06,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 509 transitions, 6771 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:06,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:06,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:06,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:07,409 INFO L124 PetriNetUnfolderBase]: 1338/2384 cut-off events. [2024-06-28 00:13:07,409 INFO L125 PetriNetUnfolderBase]: For 374226/374226 co-relation queries the response was YES. [2024-06-28 00:13:07,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17398 conditions, 2384 events. 1338/2384 cut-off events. For 374226/374226 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 14956 event pairs, 176 based on Foata normal form. 2/2384 useless extension candidates. Maximal degree in co-relation 17164. Up to 1959 conditions per place. [2024-06-28 00:13:07,449 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 388 selfloop transitions, 139 changer transitions 0/529 dead transitions. [2024-06-28 00:13:07,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 529 transitions, 7927 flow [2024-06-28 00:13:07,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:13:07,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:13:07,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-28 00:13:07,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222873900293255 [2024-06-28 00:13:07,451 INFO L175 Difference]: Start difference. First operand has 557 places, 509 transitions, 6771 flow. Second operand 11 states and 144 transitions. [2024-06-28 00:13:07,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 529 transitions, 7927 flow [2024-06-28 00:13:09,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 529 transitions, 7489 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 00:13:09,346 INFO L231 Difference]: Finished difference. Result has 560 places, 509 transitions, 6615 flow [2024-06-28 00:13:09,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6333, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6615, PETRI_PLACES=560, PETRI_TRANSITIONS=509} [2024-06-28 00:13:09,346 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 530 predicate places. [2024-06-28 00:13:09,346 INFO L495 AbstractCegarLoop]: Abstraction has has 560 places, 509 transitions, 6615 flow [2024-06-28 00:13:09,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:09,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:09,347 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 00:13:09,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-28 00:13:09,347 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:09,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:09,347 INFO L85 PathProgramCache]: Analyzing trace with hash 62563012, now seen corresponding path program 33 times [2024-06-28 00:13:09,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:09,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451152006] [2024-06-28 00:13:09,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:09,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:11,158 INFO 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 00:13:11,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:11,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451152006] [2024-06-28 00:13:11,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451152006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:11,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:11,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:13:11,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933135006] [2024-06-28 00:13:11,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:11,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:13:11,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:11,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:13:11,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:13:11,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:11,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 509 transitions, 6615 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:11,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:11,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:11,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:12,396 INFO L124 PetriNetUnfolderBase]: 1342/2391 cut-off events. [2024-06-28 00:13:12,397 INFO L125 PetriNetUnfolderBase]: For 377876/377876 co-relation queries the response was YES. [2024-06-28 00:13:12,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17194 conditions, 2391 events. 1342/2391 cut-off events. For 377876/377876 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 15025 event pairs, 265 based on Foata normal form. 2/2391 useless extension candidates. Maximal degree in co-relation 16960. Up to 2277 conditions per place. [2024-06-28 00:13:12,436 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 506 selfloop transitions, 28 changer transitions 0/536 dead transitions. [2024-06-28 00:13:12,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 536 transitions, 8154 flow [2024-06-28 00:13:12,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:13:12,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:13:12,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 154 transitions. [2024-06-28 00:13:12,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:13:12,438 INFO L175 Difference]: Start difference. First operand has 560 places, 509 transitions, 6615 flow. Second operand 14 states and 154 transitions. [2024-06-28 00:13:12,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 536 transitions, 8154 flow [2024-06-28 00:13:14,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 536 transitions, 7867 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:13:14,539 INFO L231 Difference]: Finished difference. Result has 566 places, 512 transitions, 6467 flow [2024-06-28 00:13:14,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6330, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6467, PETRI_PLACES=566, PETRI_TRANSITIONS=512} [2024-06-28 00:13:14,539 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 536 predicate places. [2024-06-28 00:13:14,539 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 512 transitions, 6467 flow [2024-06-28 00:13:14,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:14,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:14,540 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 00:13:14,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-28 00:13:14,540 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:14,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:14,540 INFO L85 PathProgramCache]: Analyzing trace with hash 64436962, now seen corresponding path program 34 times [2024-06-28 00:13:14,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:14,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053938468] [2024-06-28 00:13:14,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:14,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:16,701 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 00:13:16,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:16,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053938468] [2024-06-28 00:13:16,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053938468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:16,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:16,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:16,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333004538] [2024-06-28 00:13:16,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:16,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:16,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:16,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:16,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:16,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:16,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 512 transitions, 6467 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:16,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:16,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:16,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:18,182 INFO L124 PetriNetUnfolderBase]: 1356/2417 cut-off events. [2024-06-28 00:13:18,182 INFO L125 PetriNetUnfolderBase]: For 411267/411267 co-relation queries the response was YES. [2024-06-28 00:13:18,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17582 conditions, 2417 events. 1356/2417 cut-off events. For 411267/411267 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 15241 event pairs, 268 based on Foata normal form. 2/2417 useless extension candidates. Maximal degree in co-relation 17346. Up to 2334 conditions per place. [2024-06-28 00:13:18,224 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 508 selfloop transitions, 28 changer transitions 0/538 dead transitions. [2024-06-28 00:13:18,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 538 transitions, 8024 flow [2024-06-28 00:13:18,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:13:18,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:13:18,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 147 transitions. [2024-06-28 00:13:18,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36476426799007444 [2024-06-28 00:13:18,225 INFO L175 Difference]: Start difference. First operand has 566 places, 512 transitions, 6467 flow. Second operand 13 states and 147 transitions. [2024-06-28 00:13:18,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 538 transitions, 8024 flow [2024-06-28 00:13:20,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 538 transitions, 7862 flow, removed 41 selfloop flow, removed 11 redundant places. [2024-06-28 00:13:20,243 INFO L231 Difference]: Finished difference. Result has 568 places, 516 transitions, 6458 flow [2024-06-28 00:13:20,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6328, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6458, PETRI_PLACES=568, PETRI_TRANSITIONS=516} [2024-06-28 00:13:20,243 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 538 predicate places. [2024-06-28 00:13:20,244 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 516 transitions, 6458 flow [2024-06-28 00:13:20,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:20,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:20,244 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 00:13:20,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-28 00:13:20,244 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:20,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:20,244 INFO L85 PathProgramCache]: Analyzing trace with hash 64440682, now seen corresponding path program 35 times [2024-06-28 00:13:20,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:20,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832575822] [2024-06-28 00:13:20,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:20,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:22,506 INFO 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 00:13:22,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:22,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832575822] [2024-06-28 00:13:22,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832575822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:22,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:22,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:22,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559779222] [2024-06-28 00:13:22,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:22,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:22,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:22,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:22,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:22,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:22,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 516 transitions, 6458 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:22,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:22,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:22,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:24,034 INFO L124 PetriNetUnfolderBase]: 1353/2412 cut-off events. [2024-06-28 00:13:24,035 INFO L125 PetriNetUnfolderBase]: For 385678/385678 co-relation queries the response was YES. [2024-06-28 00:13:24,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16968 conditions, 2412 events. 1353/2412 cut-off events. For 385678/385678 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 15221 event pairs, 269 based on Foata normal form. 2/2412 useless extension candidates. Maximal degree in co-relation 16734. Up to 2346 conditions per place. [2024-06-28 00:13:24,077 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 507 selfloop transitions, 27 changer transitions 0/536 dead transitions. [2024-06-28 00:13:24,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 536 transitions, 7578 flow [2024-06-28 00:13:24,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:13:24,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:13:24,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 144 transitions. [2024-06-28 00:13:24,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3573200992555831 [2024-06-28 00:13:24,079 INFO L175 Difference]: Start difference. First operand has 568 places, 516 transitions, 6458 flow. Second operand 13 states and 144 transitions. [2024-06-28 00:13:24,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 536 transitions, 7578 flow [2024-06-28 00:13:25,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 536 transitions, 7511 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 00:13:25,939 INFO L231 Difference]: Finished difference. Result has 573 places, 516 transitions, 6449 flow [2024-06-28 00:13:25,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6391, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6449, PETRI_PLACES=573, PETRI_TRANSITIONS=516} [2024-06-28 00:13:25,940 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 543 predicate places. [2024-06-28 00:13:25,940 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 516 transitions, 6449 flow [2024-06-28 00:13:25,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:25,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:25,940 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 00:13:25,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-28 00:13:25,941 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:25,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:25,941 INFO L85 PathProgramCache]: Analyzing trace with hash 151282377, now seen corresponding path program 23 times [2024-06-28 00:13:25,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:25,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510591607] [2024-06-28 00:13:25,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:25,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:29,057 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 00:13:29,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:29,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510591607] [2024-06-28 00:13:29,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510591607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:29,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:29,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:29,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490914468] [2024-06-28 00:13:29,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:29,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:29,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:29,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:29,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:29,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:29,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 516 transitions, 6449 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:29,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:29,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:29,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:30,606 INFO L124 PetriNetUnfolderBase]: 1349/2406 cut-off events. [2024-06-28 00:13:30,606 INFO L125 PetriNetUnfolderBase]: For 360446/360446 co-relation queries the response was YES. [2024-06-28 00:13:30,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16601 conditions, 2406 events. 1349/2406 cut-off events. For 360446/360446 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 15178 event pairs, 266 based on Foata normal form. 2/2406 useless extension candidates. Maximal degree in co-relation 16365. Up to 2324 conditions per place. [2024-06-28 00:13:30,645 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 502 selfloop transitions, 30 changer transitions 0/534 dead transitions. [2024-06-28 00:13:30,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 534 transitions, 7563 flow [2024-06-28 00:13:30,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:13:30,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:13:30,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 00:13:30,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-28 00:13:30,646 INFO L175 Difference]: Start difference. First operand has 573 places, 516 transitions, 6449 flow. Second operand 11 states and 129 transitions. [2024-06-28 00:13:30,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 534 transitions, 7563 flow [2024-06-28 00:13:32,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 534 transitions, 7486 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-28 00:13:32,465 INFO L231 Difference]: Finished difference. Result has 572 places, 516 transitions, 6437 flow [2024-06-28 00:13:32,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6372, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6437, PETRI_PLACES=572, PETRI_TRANSITIONS=516} [2024-06-28 00:13:32,465 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 542 predicate places. [2024-06-28 00:13:32,465 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 516 transitions, 6437 flow [2024-06-28 00:13:32,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:32,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:32,466 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 00:13:32,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-28 00:13:32,466 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:32,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:32,466 INFO L85 PathProgramCache]: Analyzing trace with hash 151276642, now seen corresponding path program 36 times [2024-06-28 00:13:32,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:32,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292695673] [2024-06-28 00:13:32,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:32,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:34,727 INFO 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 00:13:34,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:34,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292695673] [2024-06-28 00:13:34,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292695673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:34,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:34,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:34,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829947480] [2024-06-28 00:13:34,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:34,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:34,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:34,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:34,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:34,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:34,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 516 transitions, 6437 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:34,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:34,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:34,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:36,112 INFO L124 PetriNetUnfolderBase]: 1356/2419 cut-off events. [2024-06-28 00:13:36,113 INFO L125 PetriNetUnfolderBase]: For 364704/364704 co-relation queries the response was YES. [2024-06-28 00:13:36,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16713 conditions, 2419 events. 1356/2419 cut-off events. For 364704/364704 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 15284 event pairs, 270 based on Foata normal form. 2/2419 useless extension candidates. Maximal degree in co-relation 16476. Up to 2352 conditions per place. [2024-06-28 00:13:36,161 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 505 selfloop transitions, 29 changer transitions 0/536 dead transitions. [2024-06-28 00:13:36,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 536 transitions, 7604 flow [2024-06-28 00:13:36,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:13:36,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:13:36,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 00:13:36,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 00:13:36,162 INFO L175 Difference]: Start difference. First operand has 572 places, 516 transitions, 6437 flow. Second operand 11 states and 126 transitions. [2024-06-28 00:13:36,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 536 transitions, 7604 flow [2024-06-28 00:13:38,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 536 transitions, 7530 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 00:13:38,068 INFO L231 Difference]: Finished difference. Result has 573 places, 519 transitions, 6482 flow [2024-06-28 00:13:38,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6369, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6482, PETRI_PLACES=573, PETRI_TRANSITIONS=519} [2024-06-28 00:13:38,069 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 543 predicate places. [2024-06-28 00:13:38,069 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 519 transitions, 6482 flow [2024-06-28 00:13:38,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:38,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:38,069 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 00:13:38,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-28 00:13:38,069 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:38,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:38,070 INFO L85 PathProgramCache]: Analyzing trace with hash 151128772, now seen corresponding path program 37 times [2024-06-28 00:13:38,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:38,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052659412] [2024-06-28 00:13:38,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:38,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:39,849 INFO 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 00:13:39,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:39,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052659412] [2024-06-28 00:13:39,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052659412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:39,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:39,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:39,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235358015] [2024-06-28 00:13:39,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:39,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:39,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:39,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:39,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:39,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:39,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 519 transitions, 6482 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:39,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:39,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:39,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:41,018 INFO L124 PetriNetUnfolderBase]: 1360/2427 cut-off events. [2024-06-28 00:13:41,019 INFO L125 PetriNetUnfolderBase]: For 369101/369101 co-relation queries the response was YES. [2024-06-28 00:13:41,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16788 conditions, 2427 events. 1360/2427 cut-off events. For 369101/369101 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 15354 event pairs, 268 based on Foata normal form. 2/2427 useless extension candidates. Maximal degree in co-relation 16550. Up to 2337 conditions per place. [2024-06-28 00:13:41,062 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 507 selfloop transitions, 30 changer transitions 0/539 dead transitions. [2024-06-28 00:13:41,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 539 transitions, 7975 flow [2024-06-28 00:13:41,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:13:41,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:13:41,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 00:13:41,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-28 00:13:41,063 INFO L175 Difference]: Start difference. First operand has 573 places, 519 transitions, 6482 flow. Second operand 11 states and 129 transitions. [2024-06-28 00:13:41,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 539 transitions, 7975 flow [2024-06-28 00:13:42,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 539 transitions, 7898 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 00:13:42,913 INFO L231 Difference]: Finished difference. Result has 575 places, 520 transitions, 6494 flow [2024-06-28 00:13:42,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6405, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6494, PETRI_PLACES=575, PETRI_TRANSITIONS=520} [2024-06-28 00:13:42,913 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 545 predicate places. [2024-06-28 00:13:42,914 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 520 transitions, 6494 flow [2024-06-28 00:13:42,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:42,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:42,914 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 00:13:42,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-28 00:13:42,914 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:42,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:42,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1151081946, now seen corresponding path program 38 times [2024-06-28 00:13:42,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:42,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047008103] [2024-06-28 00:13:42,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:42,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:42,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:46,248 INFO 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 00:13:46,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:46,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047008103] [2024-06-28 00:13:46,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047008103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:46,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:46,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:13:46,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423110105] [2024-06-28 00:13:46,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:46,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:13:46,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:46,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:13:46,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:13:46,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:46,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 520 transitions, 6494 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:46,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:46,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:46,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:47,583 INFO L124 PetriNetUnfolderBase]: 1357/2422 cut-off events. [2024-06-28 00:13:47,584 INFO L125 PetriNetUnfolderBase]: For 342948/342948 co-relation queries the response was YES. [2024-06-28 00:13:47,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16404 conditions, 2422 events. 1357/2422 cut-off events. For 342948/342948 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 15340 event pairs, 269 based on Foata normal form. 2/2422 useless extension candidates. Maximal degree in co-relation 16166. Up to 2366 conditions per place. [2024-06-28 00:13:47,635 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 510 selfloop transitions, 25 changer transitions 0/537 dead transitions. [2024-06-28 00:13:47,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 537 transitions, 7608 flow [2024-06-28 00:13:47,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:13:47,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:13:47,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-28 00:13:47,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-28 00:13:47,637 INFO L175 Difference]: Start difference. First operand has 575 places, 520 transitions, 6494 flow. Second operand 12 states and 131 transitions. [2024-06-28 00:13:47,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 537 transitions, 7608 flow [2024-06-28 00:13:49,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 537 transitions, 7450 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-06-28 00:13:49,668 INFO L231 Difference]: Finished difference. Result has 576 places, 520 transitions, 6390 flow [2024-06-28 00:13:49,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6336, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6390, PETRI_PLACES=576, PETRI_TRANSITIONS=520} [2024-06-28 00:13:49,669 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 546 predicate places. [2024-06-28 00:13:49,669 INFO L495 AbstractCegarLoop]: Abstraction has has 576 places, 520 transitions, 6390 flow [2024-06-28 00:13:49,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:49,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:49,669 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 00:13:49,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-28 00:13:49,669 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:49,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:49,671 INFO L85 PathProgramCache]: Analyzing trace with hash -993975620, now seen corresponding path program 39 times [2024-06-28 00:13:49,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:49,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93102617] [2024-06-28 00:13:49,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:49,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:49,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:52,132 INFO 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 00:13:52,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:52,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93102617] [2024-06-28 00:13:52,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93102617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:52,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:52,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:52,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594132465] [2024-06-28 00:13:52,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:52,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:52,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:52,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:52,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:52,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:52,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 520 transitions, 6390 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:52,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:52,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:52,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:53,325 INFO L124 PetriNetUnfolderBase]: 1364/2435 cut-off events. [2024-06-28 00:13:53,325 INFO L125 PetriNetUnfolderBase]: For 346740/346740 co-relation queries the response was YES. [2024-06-28 00:13:53,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16390 conditions, 2435 events. 1364/2435 cut-off events. For 346740/346740 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 15450 event pairs, 274 based on Foata normal form. 2/2435 useless extension candidates. Maximal degree in co-relation 16151. Up to 2273 conditions per place. [2024-06-28 00:13:53,367 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 480 selfloop transitions, 61 changer transitions 0/543 dead transitions. [2024-06-28 00:13:53,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 543 transitions, 7668 flow [2024-06-28 00:13:53,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:13:53,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:13:53,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-28 00:13:53,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-28 00:13:53,369 INFO L175 Difference]: Start difference. First operand has 576 places, 520 transitions, 6390 flow. Second operand 11 states and 140 transitions. [2024-06-28 00:13:53,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 543 transitions, 7668 flow [2024-06-28 00:13:55,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 543 transitions, 7608 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-28 00:13:55,197 INFO L231 Difference]: Finished difference. Result has 577 places, 524 transitions, 6554 flow [2024-06-28 00:13:55,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6330, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6554, PETRI_PLACES=577, PETRI_TRANSITIONS=524} [2024-06-28 00:13:55,198 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 547 predicate places. [2024-06-28 00:13:55,198 INFO L495 AbstractCegarLoop]: Abstraction has has 577 places, 524 transitions, 6554 flow [2024-06-28 00:13:55,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:55,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:55,198 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 00:13:55,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-28 00:13:55,198 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:55,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:55,199 INFO L85 PathProgramCache]: Analyzing trace with hash -569658649, now seen corresponding path program 24 times [2024-06-28 00:13:55,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:55,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348221392] [2024-06-28 00:13:55,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:55,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:59,087 INFO 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 00:13:59,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:59,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348221392] [2024-06-28 00:13:59,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348221392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:59,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:59,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:59,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623443564] [2024-06-28 00:13:59,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:59,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:59,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:59,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:59,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:59,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:59,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 524 transitions, 6554 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:59,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:59,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:59,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:00,408 INFO L124 PetriNetUnfolderBase]: 1394/2485 cut-off events. [2024-06-28 00:14:00,409 INFO L125 PetriNetUnfolderBase]: For 351941/351941 co-relation queries the response was YES. [2024-06-28 00:14:00,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16782 conditions, 2485 events. 1394/2485 cut-off events. For 351941/351941 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 15835 event pairs, 250 based on Foata normal form. 2/2485 useless extension candidates. Maximal degree in co-relation 16542. Up to 2266 conditions per place. [2024-06-28 00:14:00,454 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 501 selfloop transitions, 63 changer transitions 0/566 dead transitions. [2024-06-28 00:14:00,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 566 transitions, 7996 flow [2024-06-28 00:14:00,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:14:00,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:14:00,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-28 00:14:00,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-06-28 00:14:00,455 INFO L175 Difference]: Start difference. First operand has 577 places, 524 transitions, 6554 flow. Second operand 12 states and 153 transitions. [2024-06-28 00:14:00,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 566 transitions, 7996 flow [2024-06-28 00:14:02,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 566 transitions, 7806 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-28 00:14:02,962 INFO L231 Difference]: Finished difference. Result has 583 places, 541 transitions, 6735 flow [2024-06-28 00:14:02,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6372, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6735, PETRI_PLACES=583, PETRI_TRANSITIONS=541} [2024-06-28 00:14:02,963 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 553 predicate places. [2024-06-28 00:14:02,963 INFO L495 AbstractCegarLoop]: Abstraction has has 583 places, 541 transitions, 6735 flow [2024-06-28 00:14:02,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:02,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:02,963 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 00:14:02,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-28 00:14:02,963 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:14:02,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:02,964 INFO L85 PathProgramCache]: Analyzing trace with hash -569812254, now seen corresponding path program 40 times [2024-06-28 00:14:02,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:02,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268692669] [2024-06-28 00:14:02,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:02,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:04,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:04,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:04,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268692669] [2024-06-28 00:14:04,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268692669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:04,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:04,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:14:04,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606147176] [2024-06-28 00:14:04,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:04,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:14:04,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:04,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:14:04,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:14:05,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:14:05,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 541 transitions, 6735 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:05,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:05,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:14:05,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:06,402 INFO L124 PetriNetUnfolderBase]: 1409/2514 cut-off events. [2024-06-28 00:14:06,402 INFO L125 PetriNetUnfolderBase]: For 387986/387986 co-relation queries the response was YES. [2024-06-28 00:14:06,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17433 conditions, 2514 events. 1409/2514 cut-off events. For 387986/387986 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 16064 event pairs, 281 based on Foata normal form. 2/2514 useless extension candidates. Maximal degree in co-relation 17189. Up to 2327 conditions per place. [2024-06-28 00:14:06,439 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 496 selfloop transitions, 67 changer transitions 0/565 dead transitions. [2024-06-28 00:14:06,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 565 transitions, 8431 flow [2024-06-28 00:14:06,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:14:06,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:14:06,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-28 00:14:06,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-28 00:14:06,441 INFO L175 Difference]: Start difference. First operand has 583 places, 541 transitions, 6735 flow. Second operand 12 states and 147 transitions. [2024-06-28 00:14:06,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 565 transitions, 8431 flow [2024-06-28 00:14:08,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 565 transitions, 8249 flow, removed 65 selfloop flow, removed 7 redundant places. [2024-06-28 00:14:08,519 INFO L231 Difference]: Finished difference. Result has 590 places, 546 transitions, 6871 flow [2024-06-28 00:14:08,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6597, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6871, PETRI_PLACES=590, PETRI_TRANSITIONS=546} [2024-06-28 00:14:08,519 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 560 predicate places. [2024-06-28 00:14:08,519 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 546 transitions, 6871 flow [2024-06-28 00:14:08,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:08,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:08,520 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 00:14:08,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-28 00:14:08,520 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:14:08,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:08,520 INFO L85 PathProgramCache]: Analyzing trace with hash -569808534, now seen corresponding path program 41 times [2024-06-28 00:14:08,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:08,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507971355] [2024-06-28 00:14:08,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:08,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:10,412 INFO 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 00:14:10,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:10,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507971355] [2024-06-28 00:14:10,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507971355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:10,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:10,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:14:10,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849956362] [2024-06-28 00:14:10,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:10,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:14:10,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:10,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:14:10,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:14:10,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:14:10,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 546 transitions, 6871 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:10,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:10,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:14:10,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:11,635 INFO L124 PetriNetUnfolderBase]: 1413/2522 cut-off events. [2024-06-28 00:14:11,635 INFO L125 PetriNetUnfolderBase]: For 391988/391988 co-relation queries the response was YES. [2024-06-28 00:14:11,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17487 conditions, 2522 events. 1413/2522 cut-off events. For 391988/391988 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 16136 event pairs, 281 based on Foata normal form. 2/2522 useless extension candidates. Maximal degree in co-relation 17242. Up to 2360 conditions per place. [2024-06-28 00:14:11,679 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 498 selfloop transitions, 64 changer transitions 0/564 dead transitions. [2024-06-28 00:14:11,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 564 transitions, 8092 flow [2024-06-28 00:14:11,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:14:11,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:14:11,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-28 00:14:11,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-28 00:14:11,681 INFO L175 Difference]: Start difference. First operand has 590 places, 546 transitions, 6871 flow. Second operand 11 states and 139 transitions. [2024-06-28 00:14:11,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 564 transitions, 8092 flow [2024-06-28 00:14:13,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 564 transitions, 7937 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-28 00:14:13,944 INFO L231 Difference]: Finished difference. Result has 594 places, 547 transitions, 6895 flow [2024-06-28 00:14:13,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6734, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6895, PETRI_PLACES=594, PETRI_TRANSITIONS=547} [2024-06-28 00:14:13,945 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 564 predicate places. [2024-06-28 00:14:13,945 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 547 transitions, 6895 flow [2024-06-28 00:14:13,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:13,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:13,945 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 00:14:13,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-28 00:14:13,946 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:14:13,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:13,946 INFO L85 PathProgramCache]: Analyzing trace with hash -564302004, now seen corresponding path program 42 times [2024-06-28 00:14:13,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:13,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082759067] [2024-06-28 00:14:13,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:13,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:13,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:16,417 INFO 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 00:14:16,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:16,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082759067] [2024-06-28 00:14:16,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082759067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:16,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:16,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:14:16,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806022157] [2024-06-28 00:14:16,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:16,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:14:16,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:16,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:14:16,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:14:16,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:14:16,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 547 transitions, 6895 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:16,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:16,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:14:16,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:17,826 INFO L124 PetriNetUnfolderBase]: 1410/2517 cut-off events. [2024-06-28 00:14:17,827 INFO L125 PetriNetUnfolderBase]: For 362325/362325 co-relation queries the response was YES. [2024-06-28 00:14:17,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17039 conditions, 2517 events. 1410/2517 cut-off events. For 362325/362325 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 16101 event pairs, 280 based on Foata normal form. 2/2517 useless extension candidates. Maximal degree in co-relation 16794. Up to 2355 conditions per place. [2024-06-28 00:14:17,869 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 496 selfloop transitions, 66 changer transitions 0/564 dead transitions. [2024-06-28 00:14:17,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 564 transitions, 8071 flow [2024-06-28 00:14:17,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:14:17,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:14:17,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-28 00:14:17,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-28 00:14:17,871 INFO L175 Difference]: Start difference. First operand has 594 places, 547 transitions, 6895 flow. Second operand 11 states and 138 transitions. [2024-06-28 00:14:17,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 564 transitions, 8071 flow [2024-06-28 00:14:19,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 564 transitions, 7899 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 00:14:19,911 INFO L231 Difference]: Finished difference. Result has 596 places, 547 transitions, 6859 flow [2024-06-28 00:14:19,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6723, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6859, PETRI_PLACES=596, PETRI_TRANSITIONS=547} [2024-06-28 00:14:19,911 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 566 predicate places. [2024-06-28 00:14:19,911 INFO L495 AbstractCegarLoop]: Abstraction has has 596 places, 547 transitions, 6859 flow [2024-06-28 00:14:19,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:19,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:19,912 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 00:14:19,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-28 00:14:19,912 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:14:19,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:19,912 INFO L85 PathProgramCache]: Analyzing trace with hash -564296269, now seen corresponding path program 25 times [2024-06-28 00:14:19,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:19,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723414170] [2024-06-28 00:14:19,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:19,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:23,766 INFO 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 00:14:23,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:23,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723414170] [2024-06-28 00:14:23,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723414170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:23,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:23,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:14:23,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610866560] [2024-06-28 00:14:23,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:23,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:14:23,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:23,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:14:23,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:14:23,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:14:23,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 547 transitions, 6859 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:23,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:23,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:14:23,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:25,122 INFO L124 PetriNetUnfolderBase]: 1416/2527 cut-off events. [2024-06-28 00:14:25,122 INFO L125 PetriNetUnfolderBase]: For 366036/366036 co-relation queries the response was YES. [2024-06-28 00:14:25,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17034 conditions, 2527 events. 1416/2527 cut-off events. For 366036/366036 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 16204 event pairs, 248 based on Foata normal form. 2/2527 useless extension candidates. Maximal degree in co-relation 16788. Up to 2308 conditions per place. [2024-06-28 00:14:25,168 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 506 selfloop transitions, 65 changer transitions 0/573 dead transitions. [2024-06-28 00:14:25,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 573 transitions, 8132 flow [2024-06-28 00:14:25,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:14:25,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:14:25,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-28 00:14:25,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-28 00:14:25,170 INFO L175 Difference]: Start difference. First operand has 596 places, 547 transitions, 6859 flow. Second operand 12 states and 152 transitions. [2024-06-28 00:14:25,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 573 transitions, 8132 flow [2024-06-28 00:14:27,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 573 transitions, 7994 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 00:14:27,375 INFO L231 Difference]: Finished difference. Result has 600 places, 549 transitions, 6896 flow [2024-06-28 00:14:27,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6725, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6896, PETRI_PLACES=600, PETRI_TRANSITIONS=549} [2024-06-28 00:14:27,375 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 570 predicate places. [2024-06-28 00:14:27,376 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 549 transitions, 6896 flow [2024-06-28 00:14:27,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:27,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:27,376 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 00:14:27,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-28 00:14:27,376 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:14:27,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:27,376 INFO L85 PathProgramCache]: Analyzing trace with hash -606909131, now seen corresponding path program 19 times [2024-06-28 00:14:27,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:27,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285431605] [2024-06-28 00:14:27,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:27,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:30,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:30,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:30,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285431605] [2024-06-28 00:14:30,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285431605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:30,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:30,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:14:30,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057695066] [2024-06-28 00:14:30,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:30,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:14:30,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:30,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:14:30,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:14:30,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:14:30,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 549 transitions, 6896 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 00:14:30,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:30,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:14:30,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:31,079 INFO L124 PetriNetUnfolderBase]: 1420/2535 cut-off events. [2024-06-28 00:14:31,079 INFO L125 PetriNetUnfolderBase]: For 370878/370878 co-relation queries the response was YES. [2024-06-28 00:14:31,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17213 conditions, 2535 events. 1420/2535 cut-off events. For 370878/370878 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 16247 event pairs, 264 based on Foata normal form. 2/2535 useless extension candidates. Maximal degree in co-relation 16965. Up to 2436 conditions per place. [2024-06-28 00:14:31,122 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 529 selfloop transitions, 36 changer transitions 0/567 dead transitions. [2024-06-28 00:14:31,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 610 places, 567 transitions, 8130 flow [2024-06-28 00:14:31,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:14:31,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:14:31,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 00:14:31,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 00:14:31,148 INFO L175 Difference]: Start difference. First operand has 600 places, 549 transitions, 6896 flow. Second operand 11 states and 127 transitions. [2024-06-28 00:14:31,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 610 places, 567 transitions, 8130 flow [2024-06-28 00:14:33,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 567 transitions, 8007 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 00:14:33,226 INFO L231 Difference]: Finished difference. Result has 605 places, 550 transitions, 6909 flow [2024-06-28 00:14:33,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6773, PETRI_DIFFERENCE_MINUEND_PLACES=594, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6909, PETRI_PLACES=605, PETRI_TRANSITIONS=550} [2024-06-28 00:14:33,226 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 575 predicate places. [2024-06-28 00:14:33,226 INFO L495 AbstractCegarLoop]: Abstraction has has 605 places, 550 transitions, 6909 flow [2024-06-28 00:14:33,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 00:14:33,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:33,227 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 00:14:33,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-28 00:14:33,227 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:14:33,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:33,227 INFO L85 PathProgramCache]: Analyzing trace with hash 270033604, now seen corresponding path program 43 times [2024-06-28 00:14:33,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:33,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879674549] [2024-06-28 00:14:33,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:33,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:35,341 INFO 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 00:14:35,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:35,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879674549] [2024-06-28 00:14:35,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879674549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:35,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:35,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:14:35,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251506064] [2024-06-28 00:14:35,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:35,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:14:35,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:35,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:14:35,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:14:35,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:14:35,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 605 places, 550 transitions, 6909 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:35,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:35,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:14:35,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:36,604 INFO L124 PetriNetUnfolderBase]: 1424/2543 cut-off events. [2024-06-28 00:14:36,605 INFO L125 PetriNetUnfolderBase]: For 375563/375563 co-relation queries the response was YES. [2024-06-28 00:14:36,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17259 conditions, 2543 events. 1424/2543 cut-off events. For 375563/375563 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 16312 event pairs, 282 based on Foata normal form. 2/2543 useless extension candidates. Maximal degree in co-relation 17010. Up to 2423 conditions per place. [2024-06-28 00:14:36,648 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 525 selfloop transitions, 41 changer transitions 0/568 dead transitions. [2024-06-28 00:14:36,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 568 transitions, 8499 flow [2024-06-28 00:14:36,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:14:36,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:14:36,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 00:14:36,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 00:14:36,649 INFO L175 Difference]: Start difference. First operand has 605 places, 550 transitions, 6909 flow. Second operand 10 states and 124 transitions. [2024-06-28 00:14:36,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 568 transitions, 8499 flow [2024-06-28 00:14:38,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 568 transitions, 8348 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-28 00:14:38,880 INFO L231 Difference]: Finished difference. Result has 605 places, 551 transitions, 6888 flow [2024-06-28 00:14:38,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6758, PETRI_DIFFERENCE_MINUEND_PLACES=595, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6888, PETRI_PLACES=605, PETRI_TRANSITIONS=551} [2024-06-28 00:14:38,880 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 575 predicate places. [2024-06-28 00:14:38,880 INFO L495 AbstractCegarLoop]: Abstraction has has 605 places, 551 transitions, 6888 flow [2024-06-28 00:14:38,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:38,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:38,881 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 00:14:38,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-28 00:14:38,881 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:14:38,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:38,881 INFO L85 PathProgramCache]: Analyzing trace with hash 270181474, now seen corresponding path program 44 times [2024-06-28 00:14:38,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:38,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156075477] [2024-06-28 00:14:38,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:38,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:38,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:42,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:42,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:42,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156075477] [2024-06-28 00:14:42,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156075477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:42,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:42,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:14:42,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540774633] [2024-06-28 00:14:42,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:42,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:14:42,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:42,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:14:42,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:14:42,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:14:42,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 605 places, 551 transitions, 6888 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:42,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:42,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:14:42,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:43,733 INFO L124 PetriNetUnfolderBase]: 1431/2556 cut-off events. [2024-06-28 00:14:43,734 INFO L125 PetriNetUnfolderBase]: For 379039/379039 co-relation queries the response was YES. [2024-06-28 00:14:43,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17307 conditions, 2556 events. 1431/2556 cut-off events. For 379039/379039 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 16436 event pairs, 284 based on Foata normal form. 2/2556 useless extension candidates. Maximal degree in co-relation 17058. Up to 2456 conditions per place. [2024-06-28 00:14:43,781 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 524 selfloop transitions, 45 changer transitions 0/571 dead transitions. [2024-06-28 00:14:43,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 571 transitions, 8161 flow [2024-06-28 00:14:43,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:14:43,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:14:43,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-28 00:14:43,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 00:14:43,783 INFO L175 Difference]: Start difference. First operand has 605 places, 551 transitions, 6888 flow. Second operand 12 states and 138 transitions. [2024-06-28 00:14:43,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 571 transitions, 8161 flow [2024-06-28 00:14:46,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 571 transitions, 7624 flow, removed 46 selfloop flow, removed 18 redundant places. [2024-06-28 00:14:46,213 INFO L231 Difference]: Finished difference. Result has 600 places, 555 transitions, 6541 flow [2024-06-28 00:14:46,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6379, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6541, PETRI_PLACES=600, PETRI_TRANSITIONS=555} [2024-06-28 00:14:46,213 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 570 predicate places. [2024-06-28 00:14:46,214 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 555 transitions, 6541 flow [2024-06-28 00:14:46,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:46,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:46,214 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 00:14:46,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-28 00:14:46,214 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:14:46,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:46,215 INFO L85 PathProgramCache]: Analyzing trace with hash 477117355, now seen corresponding path program 20 times [2024-06-28 00:14:46,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:46,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958140759] [2024-06-28 00:14:46,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:46,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:47,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:47,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:47,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958140759] [2024-06-28 00:14:47,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958140759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:47,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:47,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:14:47,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858302130] [2024-06-28 00:14:47,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:47,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:14:47,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:47,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:14:47,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:14:48,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:14:48,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 555 transitions, 6541 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:48,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:48,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:14:48,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:49,046 INFO L124 PetriNetUnfolderBase]: 1428/2551 cut-off events. [2024-06-28 00:14:49,046 INFO L125 PetriNetUnfolderBase]: For 346875/346875 co-relation queries the response was YES. [2024-06-28 00:14:49,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15881 conditions, 2551 events. 1428/2551 cut-off events. For 346875/346875 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 16411 event pairs, 261 based on Foata normal form. 2/2551 useless extension candidates. Maximal degree in co-relation 15640. Up to 2452 conditions per place. [2024-06-28 00:14:49,096 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 535 selfloop transitions, 35 changer transitions 0/572 dead transitions. [2024-06-28 00:14:49,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 610 places, 572 transitions, 7725 flow [2024-06-28 00:14:49,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:14:49,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:14:49,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 00:14:49,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 00:14:49,097 INFO L175 Difference]: Start difference. First operand has 600 places, 555 transitions, 6541 flow. Second operand 11 states and 126 transitions. [2024-06-28 00:14:49,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 610 places, 572 transitions, 7725 flow [2024-06-28 00:14:51,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 601 places, 572 transitions, 7601 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 00:14:51,484 INFO L231 Difference]: Finished difference. Result has 602 places, 555 transitions, 6491 flow [2024-06-28 00:14:51,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6417, PETRI_DIFFERENCE_MINUEND_PLACES=591, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6491, PETRI_PLACES=602, PETRI_TRANSITIONS=555} [2024-06-28 00:14:51,485 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 572 predicate places. [2024-06-28 00:14:51,485 INFO L495 AbstractCegarLoop]: Abstraction has has 602 places, 555 transitions, 6491 flow [2024-06-28 00:14:51,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:51,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:51,485 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 00:14:51,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-28 00:14:51,487 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:14:51,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:51,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1881128167, now seen corresponding path program 26 times [2024-06-28 00:14:51,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:51,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316182357] [2024-06-28 00:14:51,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:51,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:51,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:54,283 INFO 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 00:14:54,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:54,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316182357] [2024-06-28 00:14:54,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316182357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:54,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:54,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:14:54,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704528098] [2024-06-28 00:14:54,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:54,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:14:54,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:54,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:14:54,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:14:54,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:14:54,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 602 places, 555 transitions, 6491 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:54,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:54,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:14:54,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:55,874 INFO L124 PetriNetUnfolderBase]: 1442/2575 cut-off events. [2024-06-28 00:14:55,874 INFO L125 PetriNetUnfolderBase]: For 316187/316187 co-relation queries the response was YES. [2024-06-28 00:14:55,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15536 conditions, 2575 events. 1442/2575 cut-off events. For 316187/316187 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 16612 event pairs, 258 based on Foata normal form. 2/2575 useless extension candidates. Maximal degree in co-relation 15294. Up to 2369 conditions per place. [2024-06-28 00:14:55,926 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 520 selfloop transitions, 60 changer transitions 0/582 dead transitions. [2024-06-28 00:14:55,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 582 transitions, 8129 flow [2024-06-28 00:14:55,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:14:55,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:14:55,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 00:14:55,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 00:14:55,928 INFO L175 Difference]: Start difference. First operand has 602 places, 555 transitions, 6491 flow. Second operand 11 states and 143 transitions. [2024-06-28 00:14:55,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 582 transitions, 8129 flow [2024-06-28 00:14:57,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 602 places, 582 transitions, 7947 flow, removed 39 selfloop flow, removed 10 redundant places. [2024-06-28 00:14:57,710 INFO L231 Difference]: Finished difference. Result has 605 places, 561 transitions, 6518 flow [2024-06-28 00:14:57,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6309, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6518, PETRI_PLACES=605, PETRI_TRANSITIONS=561} [2024-06-28 00:14:57,711 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 575 predicate places. [2024-06-28 00:14:57,711 INFO L495 AbstractCegarLoop]: Abstraction has has 605 places, 561 transitions, 6518 flow [2024-06-28 00:14:57,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:57,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:57,711 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 00:14:57,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-28 00:14:57,711 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:14:57,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:57,712 INFO L85 PathProgramCache]: Analyzing trace with hash 469483264, now seen corresponding path program 45 times [2024-06-28 00:14:57,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:57,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225256772] [2024-06-28 00:14:57,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:57,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:01,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:01,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:01,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225256772] [2024-06-28 00:15:01,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225256772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:01,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:01,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:15:01,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957004719] [2024-06-28 00:15:01,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:01,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:15:01,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:01,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:15:01,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:15:01,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:15:01,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 605 places, 561 transitions, 6518 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:01,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:01,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:15:01,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:02,903 INFO L124 PetriNetUnfolderBase]: 1446/2583 cut-off events. [2024-06-28 00:15:02,903 INFO L125 PetriNetUnfolderBase]: For 318766/318766 co-relation queries the response was YES. [2024-06-28 00:15:02,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15550 conditions, 2583 events. 1446/2583 cut-off events. For 318766/318766 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 16668 event pairs, 284 based on Foata normal form. 2/2583 useless extension candidates. Maximal degree in co-relation 15307. Up to 2510 conditions per place. [2024-06-28 00:15:02,959 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 541 selfloop transitions, 34 changer transitions 0/577 dead transitions. [2024-06-28 00:15:02,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 577 transitions, 7731 flow [2024-06-28 00:15:02,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:15:02,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:15:02,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-28 00:15:02,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575268817204301 [2024-06-28 00:15:02,961 INFO L175 Difference]: Start difference. First operand has 605 places, 561 transitions, 6518 flow. Second operand 12 states and 133 transitions. [2024-06-28 00:15:02,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 577 transitions, 7731 flow [2024-06-28 00:15:04,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 577 transitions, 7583 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:15:04,803 INFO L231 Difference]: Finished difference. Result has 609 places, 562 transitions, 6471 flow [2024-06-28 00:15:04,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6370, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6471, PETRI_PLACES=609, PETRI_TRANSITIONS=562} [2024-06-28 00:15:04,803 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 579 predicate places. [2024-06-28 00:15:04,803 INFO L495 AbstractCegarLoop]: Abstraction has has 609 places, 562 transitions, 6471 flow [2024-06-28 00:15:04,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:04,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:04,804 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 00:15:04,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-28 00:15:04,804 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:15:04,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:04,804 INFO L85 PathProgramCache]: Analyzing trace with hash 469488999, now seen corresponding path program 27 times [2024-06-28 00:15:04,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:04,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921569853] [2024-06-28 00:15:04,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:04,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:07,661 INFO 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 00:15:07,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:07,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921569853] [2024-06-28 00:15:07,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921569853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:07,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:07,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:15:07,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099101600] [2024-06-28 00:15:07,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:07,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:15:07,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:07,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:15:07,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:15:07,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:15:07,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 562 transitions, 6471 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:07,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:07,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:15:07,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:09,230 INFO L124 PetriNetUnfolderBase]: 1482/2643 cut-off events. [2024-06-28 00:15:09,230 INFO L125 PetriNetUnfolderBase]: For 322212/322212 co-relation queries the response was YES. [2024-06-28 00:15:09,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15720 conditions, 2643 events. 1482/2643 cut-off events. For 322212/322212 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 17107 event pairs, 264 based on Foata normal form. 2/2643 useless extension candidates. Maximal degree in co-relation 15476. Up to 2495 conditions per place. [2024-06-28 00:15:09,277 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 543 selfloop transitions, 49 changer transitions 0/594 dead transitions. [2024-06-28 00:15:09,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 594 transitions, 7861 flow [2024-06-28 00:15:09,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:15:09,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:15:09,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-28 00:15:09,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:15:09,279 INFO L175 Difference]: Start difference. First operand has 609 places, 562 transitions, 6471 flow. Second operand 12 states and 144 transitions. [2024-06-28 00:15:09,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 594 transitions, 7861 flow [2024-06-28 00:15:11,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 594 transitions, 7771 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-28 00:15:11,657 INFO L231 Difference]: Finished difference. Result has 614 places, 573 transitions, 6662 flow [2024-06-28 00:15:11,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6381, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6662, PETRI_PLACES=614, PETRI_TRANSITIONS=573} [2024-06-28 00:15:11,658 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 584 predicate places. [2024-06-28 00:15:11,658 INFO L495 AbstractCegarLoop]: Abstraction has has 614 places, 573 transitions, 6662 flow [2024-06-28 00:15:11,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:11,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:11,658 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 00:15:11,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-28 00:15:11,658 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:15:11,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:11,659 INFO L85 PathProgramCache]: Analyzing trace with hash 270037324, now seen corresponding path program 46 times [2024-06-28 00:15:11,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:11,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723510956] [2024-06-28 00:15:11,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:11,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:13,419 INFO 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 00:15:13,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:13,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723510956] [2024-06-28 00:15:13,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723510956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:13,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:13,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:15:13,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627420120] [2024-06-28 00:15:13,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:13,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:15:13,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:13,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:15:13,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:15:13,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:15:13,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 614 places, 573 transitions, 6662 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:13,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:13,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:15:13,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:14,816 INFO L124 PetriNetUnfolderBase]: 1486/2651 cut-off events. [2024-06-28 00:15:14,817 INFO L125 PetriNetUnfolderBase]: For 326239/326239 co-relation queries the response was YES. [2024-06-28 00:15:14,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15891 conditions, 2651 events. 1486/2651 cut-off events. For 326239/326239 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 17196 event pairs, 290 based on Foata normal form. 2/2651 useless extension candidates. Maximal degree in co-relation 15643. Up to 2551 conditions per place. [2024-06-28 00:15:14,869 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 542 selfloop transitions, 48 changer transitions 0/592 dead transitions. [2024-06-28 00:15:14,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 592 transitions, 7946 flow [2024-06-28 00:15:14,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:15:14,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:15:14,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 00:15:14,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-28 00:15:14,870 INFO L175 Difference]: Start difference. First operand has 614 places, 573 transitions, 6662 flow. Second operand 11 states and 131 transitions. [2024-06-28 00:15:14,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 592 transitions, 7946 flow [2024-06-28 00:15:17,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 592 transitions, 7849 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 00:15:17,131 INFO L231 Difference]: Finished difference. Result has 619 places, 577 transitions, 6747 flow [2024-06-28 00:15:17,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6565, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6747, PETRI_PLACES=619, PETRI_TRANSITIONS=577} [2024-06-28 00:15:17,131 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 589 predicate places. [2024-06-28 00:15:17,132 INFO L495 AbstractCegarLoop]: Abstraction has has 619 places, 577 transitions, 6747 flow [2024-06-28 00:15:17,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:17,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:17,132 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 00:15:17,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-28 00:15:17,132 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:15:17,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:17,132 INFO L85 PathProgramCache]: Analyzing trace with hash 275543854, now seen corresponding path program 47 times [2024-06-28 00:15:17,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:17,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410159069] [2024-06-28 00:15:17,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:17,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:20,601 INFO 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 00:15:20,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:20,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410159069] [2024-06-28 00:15:20,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410159069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:20,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:20,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:15:20,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616278918] [2024-06-28 00:15:20,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:20,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:15:20,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:20,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:15:20,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:15:20,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:15:20,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 619 places, 577 transitions, 6747 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:20,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:20,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:15:20,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:22,072 INFO L124 PetriNetUnfolderBase]: 1483/2646 cut-off events. [2024-06-28 00:15:22,072 INFO L125 PetriNetUnfolderBase]: For 293804/293804 co-relation queries the response was YES. [2024-06-28 00:15:22,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15502 conditions, 2646 events. 1483/2646 cut-off events. For 293804/293804 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 17172 event pairs, 289 based on Foata normal form. 2/2646 useless extension candidates. Maximal degree in co-relation 15253. Up to 2546 conditions per place. [2024-06-28 00:15:22,123 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 544 selfloop transitions, 46 changer transitions 0/592 dead transitions. [2024-06-28 00:15:22,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 592 transitions, 7963 flow [2024-06-28 00:15:22,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:15:22,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:15:22,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-28 00:15:22,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-28 00:15:22,125 INFO L175 Difference]: Start difference. First operand has 619 places, 577 transitions, 6747 flow. Second operand 12 states and 139 transitions. [2024-06-28 00:15:22,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 592 transitions, 7963 flow [2024-06-28 00:15:24,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 623 places, 592 transitions, 7820 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 00:15:24,265 INFO L231 Difference]: Finished difference. Result has 624 places, 577 transitions, 6700 flow [2024-06-28 00:15:24,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6604, PETRI_DIFFERENCE_MINUEND_PLACES=612, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6700, PETRI_PLACES=624, PETRI_TRANSITIONS=577} [2024-06-28 00:15:24,276 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 594 predicate places. [2024-06-28 00:15:24,277 INFO L495 AbstractCegarLoop]: Abstraction has has 624 places, 577 transitions, 6700 flow [2024-06-28 00:15:24,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:24,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:24,277 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 00:15:24,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-28 00:15:24,277 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:15:24,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:24,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1886490547, now seen corresponding path program 28 times [2024-06-28 00:15:24,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:24,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337231162] [2024-06-28 00:15:24,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:24,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:26,993 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 00:15:26,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:26,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337231162] [2024-06-28 00:15:26,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337231162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:26,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:26,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:15:26,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690552242] [2024-06-28 00:15:26,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:26,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:15:26,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:26,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:15:26,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:15:27,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:15:27,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 577 transitions, 6700 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:27,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:27,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:15:27,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:28,503 INFO L124 PetriNetUnfolderBase]: 1479/2640 cut-off events. [2024-06-28 00:15:28,504 INFO L125 PetriNetUnfolderBase]: For 259940/259940 co-relation queries the response was YES. [2024-06-28 00:15:28,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14973 conditions, 2640 events. 1479/2640 cut-off events. For 259940/259940 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 17130 event pairs, 258 based on Foata normal form. 2/2640 useless extension candidates. Maximal degree in co-relation 14723. Up to 2401 conditions per place. [2024-06-28 00:15:28,549 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 530 selfloop transitions, 67 changer transitions 0/599 dead transitions. [2024-06-28 00:15:28,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 634 places, 599 transitions, 7972 flow [2024-06-28 00:15:28,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:15:28,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:15:28,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-28 00:15:28,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281524926686217 [2024-06-28 00:15:28,551 INFO L175 Difference]: Start difference. First operand has 624 places, 577 transitions, 6700 flow. Second operand 11 states and 146 transitions. [2024-06-28 00:15:28,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 634 places, 599 transitions, 7972 flow [2024-06-28 00:15:30,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 599 transitions, 7846 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 00:15:30,472 INFO L231 Difference]: Finished difference. Result has 626 places, 577 transitions, 6713 flow [2024-06-28 00:15:30,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6574, PETRI_DIFFERENCE_MINUEND_PLACES=615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6713, PETRI_PLACES=626, PETRI_TRANSITIONS=577} [2024-06-28 00:15:30,473 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 596 predicate places. [2024-06-28 00:15:30,473 INFO L495 AbstractCegarLoop]: Abstraction has has 626 places, 577 transitions, 6713 flow [2024-06-28 00:15:30,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:30,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:30,473 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 00:15:30,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-28 00:15:30,474 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:15:30,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:30,475 INFO L85 PathProgramCache]: Analyzing trace with hash -128153116, now seen corresponding path program 1 times [2024-06-28 00:15:30,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:30,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442932421] [2024-06-28 00:15:30,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:30,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:30,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:32,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:32,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:32,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442932421] [2024-06-28 00:15:32,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442932421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:32,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:32,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:15:32,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302698800] [2024-06-28 00:15:32,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:32,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:15:32,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:32,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:15:32,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:15:32,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:15:32,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 577 transitions, 6713 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 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 00:15:32,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:32,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:15:32,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:34,098 INFO L124 PetriNetUnfolderBase]: 1520/2727 cut-off events. [2024-06-28 00:15:34,099 INFO L125 PetriNetUnfolderBase]: For 550598/550598 co-relation queries the response was YES. [2024-06-28 00:15:34,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17287 conditions, 2727 events. 1520/2727 cut-off events. For 550598/550598 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 17704 event pairs, 446 based on Foata normal form. 8/2733 useless extension candidates. Maximal degree in co-relation 17037. Up to 2453 conditions per place. [2024-06-28 00:15:34,151 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 567 selfloop transitions, 26 changer transitions 14/609 dead transitions. [2024-06-28 00:15:34,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 609 transitions, 8461 flow [2024-06-28 00:15:34,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:15:34,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:15:34,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 162 transitions. [2024-06-28 00:15:34,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37327188940092165 [2024-06-28 00:15:34,153 INFO L175 Difference]: Start difference. First operand has 626 places, 577 transitions, 6713 flow. Second operand 14 states and 162 transitions. [2024-06-28 00:15:34,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 609 transitions, 8461 flow [2024-06-28 00:15:37,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 627 places, 609 transitions, 8155 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-28 00:15:37,436 INFO L231 Difference]: Finished difference. Result has 628 places, 573 transitions, 6421 flow [2024-06-28 00:15:37,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6407, PETRI_DIFFERENCE_MINUEND_PLACES=614, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6421, PETRI_PLACES=628, PETRI_TRANSITIONS=573} [2024-06-28 00:15:37,437 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 598 predicate places. [2024-06-28 00:15:37,437 INFO L495 AbstractCegarLoop]: Abstraction has has 628 places, 573 transitions, 6421 flow [2024-06-28 00:15:37,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 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 00:15:37,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:37,437 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 00:15:37,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-28 00:15:37,438 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:15:37,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:37,438 INFO L85 PathProgramCache]: Analyzing trace with hash -69945346, now seen corresponding path program 2 times [2024-06-28 00:15:37,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:37,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741612853] [2024-06-28 00:15:37,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:37,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:39,797 INFO 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 00:15:39,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:39,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741612853] [2024-06-28 00:15:39,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741612853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:39,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:39,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:15:39,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421152889] [2024-06-28 00:15:39,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:39,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:15:39,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:39,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:15:39,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:15:39,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:15:39,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 628 places, 573 transitions, 6421 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 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 00:15:39,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:39,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:15:39,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:41,345 INFO L124 PetriNetUnfolderBase]: 1539/2766 cut-off events. [2024-06-28 00:15:41,345 INFO L125 PetriNetUnfolderBase]: For 736436/736436 co-relation queries the response was YES. [2024-06-28 00:15:41,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19115 conditions, 2766 events. 1539/2766 cut-off events. For 736436/736436 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 17932 event pairs, 459 based on Foata normal form. 8/2772 useless extension candidates. Maximal degree in co-relation 18866. Up to 2580 conditions per place. [2024-06-28 00:15:41,401 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 568 selfloop transitions, 28 changer transitions 7/605 dead transitions. [2024-06-28 00:15:41,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 605 transitions, 8181 flow [2024-06-28 00:15:41,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-28 00:15:41,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-28 00:15:41,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 166 transitions. [2024-06-28 00:15:41,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35698924731182796 [2024-06-28 00:15:41,403 INFO L175 Difference]: Start difference. First operand has 628 places, 573 transitions, 6421 flow. Second operand 15 states and 166 transitions. [2024-06-28 00:15:41,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 637 places, 605 transitions, 8181 flow [2024-06-28 00:15:45,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 605 transitions, 8126 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-28 00:15:45,319 INFO L231 Difference]: Finished difference. Result has 626 places, 573 transitions, 6433 flow [2024-06-28 00:15:45,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6374, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=6433, PETRI_PLACES=626, PETRI_TRANSITIONS=573} [2024-06-28 00:15:45,319 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 596 predicate places. [2024-06-28 00:15:45,319 INFO L495 AbstractCegarLoop]: Abstraction has has 626 places, 573 transitions, 6433 flow [2024-06-28 00:15:45,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 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 00:15:45,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:45,320 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 00:15:45,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-28 00:15:45,320 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:15:45,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:45,321 INFO L85 PathProgramCache]: Analyzing trace with hash -69940696, now seen corresponding path program 3 times [2024-06-28 00:15:45,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:45,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054081757] [2024-06-28 00:15:45,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:45,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:47,218 INFO 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 00:15:47,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:47,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054081757] [2024-06-28 00:15:47,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054081757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:47,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:47,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:15:47,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394979122] [2024-06-28 00:15:47,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:47,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:15:47,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:47,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:15:47,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:15:47,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:15:47,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 573 transitions, 6433 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 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 00:15:47,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:47,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:15:47,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:48,863 INFO L124 PetriNetUnfolderBase]: 1508/2705 cut-off events. [2024-06-28 00:15:48,864 INFO L125 PetriNetUnfolderBase]: For 579757/579757 co-relation queries the response was YES. [2024-06-28 00:15:48,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16935 conditions, 2705 events. 1508/2705 cut-off events. For 579757/579757 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 17506 event pairs, 450 based on Foata normal form. 10/2713 useless extension candidates. Maximal degree in co-relation 16688. Up to 2580 conditions per place. [2024-06-28 00:15:48,917 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 558 selfloop transitions, 25 changer transitions 13/598 dead transitions. [2024-06-28 00:15:48,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 598 transitions, 7733 flow [2024-06-28 00:15:48,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:15:48,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:15:48,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 154 transitions. [2024-06-28 00:15:48,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:15:48,919 INFO L175 Difference]: Start difference. First operand has 626 places, 573 transitions, 6433 flow. Second operand 14 states and 154 transitions. [2024-06-28 00:15:48,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 637 places, 598 transitions, 7733 flow [2024-06-28 00:15:51,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 598 transitions, 7674 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-28 00:15:51,907 INFO L231 Difference]: Finished difference. Result has 625 places, 569 transitions, 6384 flow [2024-06-28 00:15:51,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6374, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6384, PETRI_PLACES=625, PETRI_TRANSITIONS=569} [2024-06-28 00:15:51,908 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 595 predicate places. [2024-06-28 00:15:51,908 INFO L495 AbstractCegarLoop]: Abstraction has has 625 places, 569 transitions, 6384 flow [2024-06-28 00:15:51,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 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 00:15:51,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:51,909 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 00:15:51,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-28 00:15:51,909 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:15:51,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:51,909 INFO L85 PathProgramCache]: Analyzing trace with hash -70060666, now seen corresponding path program 4 times [2024-06-28 00:15:51,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:51,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574518547] [2024-06-28 00:15:51,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:51,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:54,710 INFO 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 00:15:54,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:54,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574518547] [2024-06-28 00:15:54,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574518547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:54,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:54,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:15:54,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859351090] [2024-06-28 00:15:54,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:54,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:15:54,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:54,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:15:54,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:15:54,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:15:54,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 569 transitions, 6384 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 00:15:54,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:54,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:15:54,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:56,120 INFO L124 PetriNetUnfolderBase]: 1495/2682 cut-off events. [2024-06-28 00:15:56,120 INFO L125 PetriNetUnfolderBase]: For 538070/538070 co-relation queries the response was YES. [2024-06-28 00:15:56,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16788 conditions, 2682 events. 1495/2682 cut-off events. For 538070/538070 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 17369 event pairs, 442 based on Foata normal form. 8/2688 useless extension candidates. Maximal degree in co-relation 16542. Up to 2562 conditions per place. [2024-06-28 00:15:56,168 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 553 selfloop transitions, 22 changer transitions 16/593 dead transitions. [2024-06-28 00:15:56,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 593 transitions, 7658 flow [2024-06-28 00:15:56,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:15:56,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:15:56,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 151 transitions. [2024-06-28 00:15:56,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.347926267281106 [2024-06-28 00:15:56,170 INFO L175 Difference]: Start difference. First operand has 625 places, 569 transitions, 6384 flow. Second operand 14 states and 151 transitions. [2024-06-28 00:15:56,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 593 transitions, 7658 flow [2024-06-28 00:15:59,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 621 places, 593 transitions, 7606 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-28 00:15:59,043 INFO L231 Difference]: Finished difference. Result has 622 places, 564 transitions, 6325 flow [2024-06-28 00:15:59,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6332, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6325, PETRI_PLACES=622, PETRI_TRANSITIONS=564} [2024-06-28 00:15:59,043 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 592 predicate places. [2024-06-28 00:15:59,044 INFO L495 AbstractCegarLoop]: Abstraction has has 622 places, 564 transitions, 6325 flow [2024-06-28 00:15:59,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 00:15:59,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:59,044 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 00:15:59,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-28 00:15:59,044 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:15:59,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:59,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1677461882, now seen corresponding path program 5 times [2024-06-28 00:15:59,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:59,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596881260] [2024-06-28 00:15:59,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:59,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:02,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:02,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:02,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596881260] [2024-06-28 00:16:02,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596881260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:02,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:02,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:16:02,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876883928] [2024-06-28 00:16:02,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:02,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:16:02,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:02,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:16:02,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:16:02,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:16:02,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 564 transitions, 6325 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 00:16:02,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:02,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:16:02,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:03,768 INFO L124 PetriNetUnfolderBase]: 1492/2674 cut-off events. [2024-06-28 00:16:03,768 INFO L125 PetriNetUnfolderBase]: For 573685/573685 co-relation queries the response was YES. [2024-06-28 00:16:03,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16759 conditions, 2674 events. 1492/2674 cut-off events. For 573685/573685 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 17223 event pairs, 448 based on Foata normal form. 10/2682 useless extension candidates. Maximal degree in co-relation 16513. Up to 2562 conditions per place. [2024-06-28 00:16:03,810 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 552 selfloop transitions, 23 changer transitions 11/588 dead transitions. [2024-06-28 00:16:03,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 588 transitions, 7621 flow [2024-06-28 00:16:03,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:16:03,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:16:03,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 142 transitions. [2024-06-28 00:16:03,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3523573200992556 [2024-06-28 00:16:03,820 INFO L175 Difference]: Start difference. First operand has 622 places, 564 transitions, 6325 flow. Second operand 13 states and 142 transitions. [2024-06-28 00:16:03,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 588 transitions, 7621 flow [2024-06-28 00:16:06,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 588 transitions, 7563 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-28 00:16:06,525 INFO L231 Difference]: Finished difference. Result has 614 places, 563 transitions, 6310 flow [2024-06-28 00:16:06,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6271, PETRI_DIFFERENCE_MINUEND_PLACES=601, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6310, PETRI_PLACES=614, PETRI_TRANSITIONS=563} [2024-06-28 00:16:06,525 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 584 predicate places. [2024-06-28 00:16:06,526 INFO L495 AbstractCegarLoop]: Abstraction has has 614 places, 563 transitions, 6310 flow [2024-06-28 00:16:06,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 00:16:06,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:06,526 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 00:16:06,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-28 00:16:06,526 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:16:06,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:06,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1672997882, now seen corresponding path program 6 times [2024-06-28 00:16:06,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:06,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642855992] [2024-06-28 00:16:06,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:06,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:09,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:09,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:09,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642855992] [2024-06-28 00:16:09,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642855992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:09,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:09,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:16:09,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483182648] [2024-06-28 00:16:09,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:09,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:16:09,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:09,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:16:09,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:16:09,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:16:09,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 614 places, 563 transitions, 6310 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 00:16:09,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:09,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:16:09,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:10,650 INFO L124 PetriNetUnfolderBase]: 1524/2746 cut-off events. [2024-06-28 00:16:10,650 INFO L125 PetriNetUnfolderBase]: For 799248/799248 co-relation queries the response was YES. [2024-06-28 00:16:10,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19992 conditions, 2746 events. 1524/2746 cut-off events. For 799248/799248 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 17751 event pairs, 470 based on Foata normal form. 8/2752 useless extension candidates. Maximal degree in co-relation 19749. Up to 2515 conditions per place. [2024-06-28 00:16:10,689 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 558 selfloop transitions, 18 changer transitions 10/588 dead transitions. [2024-06-28 00:16:10,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 588 transitions, 8016 flow [2024-06-28 00:16:10,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:16:10,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:16:10,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-28 00:16:10,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 00:16:10,691 INFO L175 Difference]: Start difference. First operand has 614 places, 563 transitions, 6310 flow. Second operand 12 states and 135 transitions. [2024-06-28 00:16:10,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 588 transitions, 8016 flow [2024-06-28 00:16:13,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 588 transitions, 7966 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 00:16:13,683 INFO L231 Difference]: Finished difference. Result has 613 places, 558 transitions, 6252 flow [2024-06-28 00:16:13,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6262, PETRI_DIFFERENCE_MINUEND_PLACES=601, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6252, PETRI_PLACES=613, PETRI_TRANSITIONS=558} [2024-06-28 00:16:13,684 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 583 predicate places. [2024-06-28 00:16:13,684 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 558 transitions, 6252 flow [2024-06-28 00:16:13,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 00:16:13,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:13,685 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 00:16:13,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-28 00:16:13,685 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:16:13,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:13,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1677581852, now seen corresponding path program 7 times [2024-06-28 00:16:13,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:13,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186553292] [2024-06-28 00:16:13,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:13,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:16,158 INFO 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 00:16:16,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:16,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186553292] [2024-06-28 00:16:16,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186553292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:16,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:16,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:16:16,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048675400] [2024-06-28 00:16:16,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:16,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:16:16,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:16,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:16:16,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:16:16,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:16:16,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 558 transitions, 6252 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 00:16:16,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:16,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:16:16,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:17,765 INFO L124 PetriNetUnfolderBase]: 1489/2677 cut-off events. [2024-06-28 00:16:17,765 INFO L125 PetriNetUnfolderBase]: For 663663/663663 co-relation queries the response was YES. [2024-06-28 00:16:17,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18210 conditions, 2677 events. 1489/2677 cut-off events. For 663663/663663 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 17225 event pairs, 448 based on Foata normal form. 8/2683 useless extension candidates. Maximal degree in co-relation 17967. Up to 2499 conditions per place. [2024-06-28 00:16:17,811 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 554 selfloop transitions, 18 changer transitions 11/585 dead transitions. [2024-06-28 00:16:17,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 585 transitions, 7930 flow [2024-06-28 00:16:17,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:16:17,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:16:17,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 144 transitions. [2024-06-28 00:16:17,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3573200992555831 [2024-06-28 00:16:17,812 INFO L175 Difference]: Start difference. First operand has 613 places, 558 transitions, 6252 flow. Second operand 13 states and 144 transitions. [2024-06-28 00:16:17,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 585 transitions, 7930 flow [2024-06-28 00:16:20,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 609 places, 585 transitions, 7887 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 00:16:20,519 INFO L231 Difference]: Finished difference. Result has 610 places, 554 transitions, 6216 flow [2024-06-28 00:16:20,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=6215, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6216, PETRI_PLACES=610, PETRI_TRANSITIONS=554} [2024-06-28 00:16:20,520 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 580 predicate places. [2024-06-28 00:16:20,520 INFO L495 AbstractCegarLoop]: Abstraction has has 610 places, 554 transitions, 6216 flow [2024-06-28 00:16:20,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 00:16:20,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:20,520 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 00:16:20,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-28 00:16:20,521 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:16:20,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:20,521 INFO L85 PathProgramCache]: Analyzing trace with hash 826385334, now seen corresponding path program 1 times [2024-06-28 00:16:20,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:20,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33148186] [2024-06-28 00:16:20,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:20,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15