./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe012_pso.oepc_pso.opt_rmo.opt.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-nonrel/safe012_pso.oepc_pso.opt_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe012_pso.oepc_pso.opt_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe012_pso.oepc_pso.opt_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --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 04:03:33,558 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 04:03:33,624 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 04:03:33,629 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 04:03:33,630 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 04:03:33,669 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 04:03:33,669 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 04:03:33,670 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 04:03:33,670 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 04:03:33,673 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 04:03:33,674 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 04:03:33,674 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 04:03:33,675 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 04:03:33,676 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 04:03:33,676 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 04:03:33,676 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 04:03:33,676 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 04:03:33,677 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 04:03:33,677 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 04:03:33,677 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 04:03:33,677 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 04:03:33,678 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 04:03:33,678 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 04:03:33,678 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 04:03:33,678 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 04:03:33,678 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 04:03:33,679 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 04:03:33,679 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 04:03:33,679 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 04:03:33,680 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 04:03:33,680 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 04:03:33,681 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 04:03:33,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 04:03:33,681 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 04:03:33,681 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 04:03:33,681 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 04:03:33,682 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 04:03:33,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 04:03:33,682 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 04:03:33,682 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 04:03:33,682 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 04:03:33,683 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 04:03:33,683 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 04:03:33,689 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 04:03:33,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 04:03:33,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 04:03:33,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 04:03:33,923 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 04:03:33,924 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 04:03:33,925 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_pso.oepc_pso.opt_rmo.opt.i [2024-06-28 04:03:34,999 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 04:03:35,187 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 04:03:35,188 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_pso.oepc_pso.opt_rmo.opt.i [2024-06-28 04:03:35,200 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18a871efb/6726d30bdfe64cbcb58028352420c0dd/FLAG199fa3f54 [2024-06-28 04:03:35,211 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18a871efb/6726d30bdfe64cbcb58028352420c0dd [2024-06-28 04:03:35,213 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 04:03:35,213 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 04:03:35,214 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe012_pso.oepc_pso.opt_rmo.opt.yml/witness.yml [2024-06-28 04:03:35,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 04:03:35,371 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 04:03:35,372 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 04:03:35,372 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 04:03:35,376 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 04:03:35,377 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 04:03:35" (1/2) ... [2024-06-28 04:03:35,378 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@233bc5ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:03:35, skipping insertion in model container [2024-06-28 04:03:35,378 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 04:03:35" (1/2) ... [2024-06-28 04:03:35,379 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@51a5982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:03:35, skipping insertion in model container [2024-06-28 04:03:35,380 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:03:35" (2/2) ... [2024-06-28 04:03:35,380 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@233bc5ec and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:03:35, skipping insertion in model container [2024-06-28 04:03:35,380 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:03:35" (2/2) ... [2024-06-28 04:03:35,381 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 04:03:35,480 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 04:03:35,481 INFO L97 edCorrectnessWitness]: Location invariant before [L836-L836] ((((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-28 04:03:35,481 INFO L97 edCorrectnessWitness]: Location invariant before [L837-L837] ((((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-28 04:03:35,481 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] ((((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-28 04:03:35,481 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 04:03:35,481 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-28 04:03:35,517 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 04:03:35,807 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 04:03:35,816 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 04:03:35,919 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 04:03:35,949 INFO L206 MainTranslator]: Completed translation [2024-06-28 04:03:35,949 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:03:35 WrapperNode [2024-06-28 04:03:35,949 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 04:03:35,950 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 04:03:35,950 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 04:03:35,951 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 04:03:35,956 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 04:03:35" (1/1) ... [2024-06-28 04:03:35,980 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 04:03:35" (1/1) ... [2024-06-28 04:03:36,006 INFO L138 Inliner]: procedures = 175, calls = 43, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 126 [2024-06-28 04:03:36,007 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 04:03:36,007 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 04:03:36,007 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 04:03:36,007 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 04:03:36,020 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 04:03:35" (1/1) ... [2024-06-28 04:03:36,021 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 04:03:35" (1/1) ... [2024-06-28 04:03:36,023 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 04:03:35" (1/1) ... [2024-06-28 04:03:36,035 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 04:03:36,035 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 04:03:35" (1/1) ... [2024-06-28 04:03:36,035 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 04:03:35" (1/1) ... [2024-06-28 04:03:36,042 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 04:03:35" (1/1) ... [2024-06-28 04:03:36,055 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 04:03:35" (1/1) ... [2024-06-28 04:03:36,057 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 04:03:35" (1/1) ... [2024-06-28 04:03:36,058 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 04:03:35" (1/1) ... [2024-06-28 04:03:36,061 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 04:03:36,062 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 04:03:36,062 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 04:03:36,062 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 04:03:36,063 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 04:03:35" (1/1) ... [2024-06-28 04:03:36,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 04:03:36,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 04:03:36,115 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 04:03:36,150 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 04:03:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 04:03:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 04:03:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 04:03:36,166 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 04:03:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 04:03:36,167 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 04:03:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 04:03:36,167 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 04:03:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 04:03:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 04:03:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 04:03:36,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 04:03:36,169 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 04:03:36,269 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 04:03:36,271 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 04:03:36,582 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 04:03:36,583 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 04:03:36,699 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 04:03:36,699 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 04:03:36,700 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 04:03:36 BoogieIcfgContainer [2024-06-28 04:03:36,700 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 04:03:36,702 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 04:03:36,702 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 04:03:36,704 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 04:03:36,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 04:03:35" (1/4) ... [2024-06-28 04:03:36,705 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20594cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 04:03:36, skipping insertion in model container [2024-06-28 04:03:36,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:03:35" (2/4) ... [2024-06-28 04:03:36,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20594cf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 04:03:36, skipping insertion in model container [2024-06-28 04:03:36,706 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 04:03:35" (3/4) ... [2024-06-28 04:03:36,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20594cf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 04:03:36, skipping insertion in model container [2024-06-28 04:03:36,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 04:03:36" (4/4) ... [2024-06-28 04:03:36,707 INFO L112 eAbstractionObserver]: Analyzing ICFG safe012_pso.oepc_pso.opt_rmo.opt.i [2024-06-28 04:03:36,720 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 04:03:36,720 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 04:03:36,720 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 04:03:36,756 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 04:03:36,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 40 transitions, 92 flow [2024-06-28 04:03:36,810 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2024-06-28 04:03:36,810 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 04:03:36,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 37 events. 0/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 04:03:36,813 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 40 transitions, 92 flow [2024-06-28 04:03:36,816 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2024-06-28 04:03:36,826 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 04:03:36,832 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;@509ab259, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 04:03:36,832 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 04:03:36,839 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 04:03:36,839 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 04:03:36,839 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 04:03:36,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:36,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 04:03:36,841 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:36,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:36,845 INFO L85 PathProgramCache]: Analyzing trace with hash 362810851, now seen corresponding path program 1 times [2024-06-28 04:03:36,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:36,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189830773] [2024-06-28 04:03:36,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:36,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:37,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:37,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:37,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189830773] [2024-06-28 04:03:37,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189830773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:37,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:37,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 04:03:37,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061331] [2024-06-28 04:03:37,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:37,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 04:03:37,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:37,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 04:03:37,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 04:03:37,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-28 04:03:37,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:37,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:37,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-28 04:03:37,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:38,019 INFO L124 PetriNetUnfolderBase]: 891/1368 cut-off events. [2024-06-28 04:03:38,019 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-06-28 04:03:38,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2789 conditions, 1368 events. 891/1368 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6471 event pairs, 520 based on Foata normal form. 2/1340 useless extension candidates. Maximal degree in co-relation 2777. Up to 1335 conditions per place. [2024-06-28 04:03:38,029 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 31 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2024-06-28 04:03:38,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 169 flow [2024-06-28 04:03:38,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 04:03:38,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 04:03:38,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-06-28 04:03:38,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2024-06-28 04:03:38,039 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 3 states and 77 transitions. [2024-06-28 04:03:38,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 169 flow [2024-06-28 04:03:38,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 164 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 04:03:38,042 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 98 flow [2024-06-28 04:03:38,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2024-06-28 04:03:38,045 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2024-06-28 04:03:38,046 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 98 flow [2024-06-28 04:03:38,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:38,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:38,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:38,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 04:03:38,046 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:38,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:38,047 INFO L85 PathProgramCache]: Analyzing trace with hash 746924961, now seen corresponding path program 1 times [2024-06-28 04:03:38,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:38,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70576886] [2024-06-28 04:03:38,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:38,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:39,021 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 04:03:39,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:39,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70576886] [2024-06-28 04:03:39,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70576886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:39,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:39,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 04:03:39,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624675740] [2024-06-28 04:03:39,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:39,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 04:03:39,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:39,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 04:03:39,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 04:03:39,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-06-28 04:03:39,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 98 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:39,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:39,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-06-28 04:03:39,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:39,413 INFO L124 PetriNetUnfolderBase]: 1131/1721 cut-off events. [2024-06-28 04:03:39,414 INFO L125 PetriNetUnfolderBase]: For 341/355 co-relation queries the response was YES. [2024-06-28 04:03:39,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3989 conditions, 1721 events. 1131/1721 cut-off events. For 341/355 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7893 event pairs, 589 based on Foata normal form. 13/1728 useless extension candidates. Maximal degree in co-relation 3977. Up to 1639 conditions per place. [2024-06-28 04:03:39,422 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 37 selfloop transitions, 6 changer transitions 0/49 dead transitions. [2024-06-28 04:03:39,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 49 transitions, 222 flow [2024-06-28 04:03:39,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 04:03:39,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 04:03:39,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-06-28 04:03:39,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5875 [2024-06-28 04:03:39,426 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 98 flow. Second operand 4 states and 94 transitions. [2024-06-28 04:03:39,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 49 transitions, 222 flow [2024-06-28 04:03:39,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 49 transitions, 218 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 04:03:39,429 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 121 flow [2024-06-28 04:03:39,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2024-06-28 04:03:39,430 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2024-06-28 04:03:39,430 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 121 flow [2024-06-28 04:03:39,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:39,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:39,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:39,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 04:03:39,433 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:39,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:39,434 INFO L85 PathProgramCache]: Analyzing trace with hash 934192984, now seen corresponding path program 1 times [2024-06-28 04:03:39,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:39,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397443004] [2024-06-28 04:03:39,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:39,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:40,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:40,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:40,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397443004] [2024-06-28 04:03:40,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397443004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:40,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:40,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 04:03:40,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679845179] [2024-06-28 04:03:40,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:40,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 04:03:40,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:40,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 04:03:40,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 04:03:40,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-06-28 04:03:40,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 121 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 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 04:03:40,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:40,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-06-28 04:03:40,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:40,408 INFO L124 PetriNetUnfolderBase]: 888/1371 cut-off events. [2024-06-28 04:03:40,408 INFO L125 PetriNetUnfolderBase]: For 720/723 co-relation queries the response was YES. [2024-06-28 04:03:40,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3475 conditions, 1371 events. 888/1371 cut-off events. For 720/723 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6384 event pairs, 408 based on Foata normal form. 6/1374 useless extension candidates. Maximal degree in co-relation 3460. Up to 1326 conditions per place. [2024-06-28 04:03:40,414 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 39 selfloop transitions, 8 changer transitions 0/53 dead transitions. [2024-06-28 04:03:40,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 53 transitions, 271 flow [2024-06-28 04:03:40,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:03:40,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:03:40,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2024-06-28 04:03:40,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.495 [2024-06-28 04:03:40,415 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 121 flow. Second operand 5 states and 99 transitions. [2024-06-28 04:03:40,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 53 transitions, 271 flow [2024-06-28 04:03:40,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 254 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 04:03:40,418 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 170 flow [2024-06-28 04:03:40,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2024-06-28 04:03:40,418 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2024-06-28 04:03:40,418 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 170 flow [2024-06-28 04:03:40,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 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 04:03:40,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:40,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:40,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 04:03:40,419 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:40,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:40,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1104787214, now seen corresponding path program 1 times [2024-06-28 04:03:40,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:40,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101373692] [2024-06-28 04:03:40,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:40,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:41,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:41,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:41,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101373692] [2024-06-28 04:03:41,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101373692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:41,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:41,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:03:41,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273587186] [2024-06-28 04:03:41,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:41,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:03:41,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:41,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:03:41,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:03:41,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 04:03:41,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 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 04:03:41,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:41,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 04:03:41,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:41,414 INFO L124 PetriNetUnfolderBase]: 1047/1601 cut-off events. [2024-06-28 04:03:41,415 INFO L125 PetriNetUnfolderBase]: For 1527/1527 co-relation queries the response was YES. [2024-06-28 04:03:41,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4594 conditions, 1601 events. 1047/1601 cut-off events. For 1527/1527 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7559 event pairs, 479 based on Foata normal form. 4/1603 useless extension candidates. Maximal degree in co-relation 4576. Up to 1534 conditions per place. [2024-06-28 04:03:41,423 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 51 selfloop transitions, 11 changer transitions 0/67 dead transitions. [2024-06-28 04:03:41,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 67 transitions, 379 flow [2024-06-28 04:03:41,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:03:41,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:03:41,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-06-28 04:03:41,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4708333333333333 [2024-06-28 04:03:41,424 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 170 flow. Second operand 6 states and 113 transitions. [2024-06-28 04:03:41,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 67 transitions, 379 flow [2024-06-28 04:03:41,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 67 transitions, 360 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 04:03:41,427 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 242 flow [2024-06-28 04:03:41,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=242, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2024-06-28 04:03:41,428 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 12 predicate places. [2024-06-28 04:03:41,428 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 242 flow [2024-06-28 04:03:41,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 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 04:03:41,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:41,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:41,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 04:03:41,428 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:41,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:41,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1136444429, now seen corresponding path program 1 times [2024-06-28 04:03:41,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:41,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912821935] [2024-06-28 04:03:41,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:41,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:42,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:42,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:42,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912821935] [2024-06-28 04:03:42,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912821935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:42,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:42,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:03:42,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004080914] [2024-06-28 04:03:42,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:42,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:03:42,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:42,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:03:42,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:03:42,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 04:03:42,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 242 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:42,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:42,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 04:03:42,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:42,543 INFO L124 PetriNetUnfolderBase]: 1042/1599 cut-off events. [2024-06-28 04:03:42,543 INFO L125 PetriNetUnfolderBase]: For 2526/2526 co-relation queries the response was YES. [2024-06-28 04:03:42,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5056 conditions, 1599 events. 1042/1599 cut-off events. For 2526/2526 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7654 event pairs, 461 based on Foata normal form. 2/1599 useless extension candidates. Maximal degree in co-relation 5034. Up to 1541 conditions per place. [2024-06-28 04:03:42,553 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 59 selfloop transitions, 14 changer transitions 0/78 dead transitions. [2024-06-28 04:03:42,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 78 transitions, 477 flow [2024-06-28 04:03:42,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:03:42,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:03:42,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 04:03:42,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-28 04:03:42,557 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 242 flow. Second operand 7 states and 128 transitions. [2024-06-28 04:03:42,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 78 transitions, 477 flow [2024-06-28 04:03:42,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 78 transitions, 471 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 04:03:42,566 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 335 flow [2024-06-28 04:03:42,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=335, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2024-06-28 04:03:42,568 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2024-06-28 04:03:42,568 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 335 flow [2024-06-28 04:03:42,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:42,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:42,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:42,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 04:03:42,569 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:42,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:42,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1021043945, now seen corresponding path program 1 times [2024-06-28 04:03:42,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:42,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765417186] [2024-06-28 04:03:42,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:42,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:43,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:43,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:43,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765417186] [2024-06-28 04:03:43,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765417186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:43,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:43,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:03:43,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875774025] [2024-06-28 04:03:43,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:43,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:03:43,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:43,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:03:43,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:03:43,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 04:03:43,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 335 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:43,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:43,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 04:03:43,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:43,891 INFO L124 PetriNetUnfolderBase]: 1242/1907 cut-off events. [2024-06-28 04:03:43,892 INFO L125 PetriNetUnfolderBase]: For 4429/4455 co-relation queries the response was YES. [2024-06-28 04:03:43,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6477 conditions, 1907 events. 1242/1907 cut-off events. For 4429/4455 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9139 event pairs, 448 based on Foata normal form. 13/1883 useless extension candidates. Maximal degree in co-relation 6450. Up to 1748 conditions per place. [2024-06-28 04:03:43,902 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 48 selfloop transitions, 17 changer transitions 0/76 dead transitions. [2024-06-28 04:03:43,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 523 flow [2024-06-28 04:03:43,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:03:43,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:03:43,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 98 transitions. [2024-06-28 04:03:43,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49 [2024-06-28 04:03:43,904 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 335 flow. Second operand 5 states and 98 transitions. [2024-06-28 04:03:43,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 523 flow [2024-06-28 04:03:43,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 76 transitions, 509 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 04:03:43,909 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 397 flow [2024-06-28 04:03:43,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=397, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2024-06-28 04:03:43,909 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2024-06-28 04:03:43,909 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 397 flow [2024-06-28 04:03:43,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:43,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:43,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:43,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 04:03:43,910 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:43,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:43,911 INFO L85 PathProgramCache]: Analyzing trace with hash 870040347, now seen corresponding path program 1 times [2024-06-28 04:03:43,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:43,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211180369] [2024-06-28 04:03:43,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:43,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:43,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:44,749 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 04:03:44,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:44,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211180369] [2024-06-28 04:03:44,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211180369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:44,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:44,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:03:44,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904761242] [2024-06-28 04:03:44,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:44,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:03:44,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:44,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:03:44,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:03:44,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 04:03:44,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 397 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:44,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:44,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 04:03:44,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:45,195 INFO L124 PetriNetUnfolderBase]: 1112/1712 cut-off events. [2024-06-28 04:03:45,196 INFO L125 PetriNetUnfolderBase]: For 5323/5323 co-relation queries the response was YES. [2024-06-28 04:03:45,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6328 conditions, 1712 events. 1112/1712 cut-off events. For 5323/5323 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8371 event pairs, 435 based on Foata normal form. 26/1737 useless extension candidates. Maximal degree in co-relation 6299. Up to 1489 conditions per place. [2024-06-28 04:03:45,206 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 66 selfloop transitions, 25 changer transitions 0/96 dead transitions. [2024-06-28 04:03:45,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 96 transitions, 699 flow [2024-06-28 04:03:45,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:03:45,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:03:45,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 04:03:45,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 04:03:45,208 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 397 flow. Second operand 9 states and 165 transitions. [2024-06-28 04:03:45,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 96 transitions, 699 flow [2024-06-28 04:03:45,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 96 transitions, 655 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 04:03:45,213 INFO L231 Difference]: Finished difference. Result has 72 places, 69 transitions, 482 flow [2024-06-28 04:03:45,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=482, PETRI_PLACES=72, PETRI_TRANSITIONS=69} [2024-06-28 04:03:45,213 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 31 predicate places. [2024-06-28 04:03:45,213 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 69 transitions, 482 flow [2024-06-28 04:03:45,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:45,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:45,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:45,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 04:03:45,214 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:45,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:45,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1587589869, now seen corresponding path program 1 times [2024-06-28 04:03:45,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:45,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815858221] [2024-06-28 04:03:45,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:45,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:46,125 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 04:03:46,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:46,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815858221] [2024-06-28 04:03:46,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815858221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:46,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:46,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:03:46,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944180368] [2024-06-28 04:03:46,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:46,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:03:46,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:46,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:03:46,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:03:46,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:03:46,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 69 transitions, 482 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:46,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:46,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:03:46,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:46,564 INFO L124 PetriNetUnfolderBase]: 1372/2095 cut-off events. [2024-06-28 04:03:46,565 INFO L125 PetriNetUnfolderBase]: For 7195/7195 co-relation queries the response was YES. [2024-06-28 04:03:46,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7936 conditions, 2095 events. 1372/2095 cut-off events. For 7195/7195 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 9848 event pairs, 476 based on Foata normal form. 2/2096 useless extension candidates. Maximal degree in co-relation 7904. Up to 1948 conditions per place. [2024-06-28 04:03:46,585 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 69 selfloop transitions, 23 changer transitions 0/96 dead transitions. [2024-06-28 04:03:46,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 96 transitions, 776 flow [2024-06-28 04:03:46,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:03:46,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:03:46,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2024-06-28 04:03:46,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 04:03:46,587 INFO L175 Difference]: Start difference. First operand has 72 places, 69 transitions, 482 flow. Second operand 6 states and 112 transitions. [2024-06-28 04:03:46,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 96 transitions, 776 flow [2024-06-28 04:03:46,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 96 transitions, 722 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 04:03:46,597 INFO L231 Difference]: Finished difference. Result has 75 places, 78 transitions, 583 flow [2024-06-28 04:03:46,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=583, PETRI_PLACES=75, PETRI_TRANSITIONS=78} [2024-06-28 04:03:46,599 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 34 predicate places. [2024-06-28 04:03:46,599 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 78 transitions, 583 flow [2024-06-28 04:03:46,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:46,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:46,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:46,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 04:03:46,600 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:46,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:46,600 INFO L85 PathProgramCache]: Analyzing trace with hash -786509795, now seen corresponding path program 1 times [2024-06-28 04:03:46,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:46,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145137187] [2024-06-28 04:03:46,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:46,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:47,259 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 04:03:47,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:47,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145137187] [2024-06-28 04:03:47,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145137187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:47,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:47,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:03:47,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326845335] [2024-06-28 04:03:47,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:47,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:03:47,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:47,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:03:47,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:03:47,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:03:47,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 78 transitions, 583 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:47,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:47,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:03:47,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:47,646 INFO L124 PetriNetUnfolderBase]: 1366/2087 cut-off events. [2024-06-28 04:03:47,646 INFO L125 PetriNetUnfolderBase]: For 8657/8657 co-relation queries the response was YES. [2024-06-28 04:03:47,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8358 conditions, 2087 events. 1366/2087 cut-off events. For 8657/8657 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 9834 event pairs, 462 based on Foata normal form. 2/2088 useless extension candidates. Maximal degree in co-relation 8323. Up to 2048 conditions per place. [2024-06-28 04:03:47,659 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 82 selfloop transitions, 9 changer transitions 0/95 dead transitions. [2024-06-28 04:03:47,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 95 transitions, 849 flow [2024-06-28 04:03:47,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:03:47,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:03:47,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-06-28 04:03:47,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-28 04:03:47,661 INFO L175 Difference]: Start difference. First operand has 75 places, 78 transitions, 583 flow. Second operand 5 states and 88 transitions. [2024-06-28 04:03:47,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 95 transitions, 849 flow [2024-06-28 04:03:47,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 95 transitions, 827 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-06-28 04:03:47,675 INFO L231 Difference]: Finished difference. Result has 80 places, 85 transitions, 652 flow [2024-06-28 04:03:47,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=652, PETRI_PLACES=80, PETRI_TRANSITIONS=85} [2024-06-28 04:03:47,675 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 39 predicate places. [2024-06-28 04:03:47,676 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 85 transitions, 652 flow [2024-06-28 04:03:47,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:47,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:47,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:47,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 04:03:47,676 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:47,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:47,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1505224282, now seen corresponding path program 1 times [2024-06-28 04:03:47,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:47,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687026408] [2024-06-28 04:03:47,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:47,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:48,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:48,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:48,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687026408] [2024-06-28 04:03:48,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687026408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:48,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:48,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:03:48,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740070010] [2024-06-28 04:03:48,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:48,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:03:48,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:48,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:03:48,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:03:48,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 04:03:48,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 85 transitions, 652 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:48,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:48,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 04:03:48,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:49,119 INFO L124 PetriNetUnfolderBase]: 1315/2039 cut-off events. [2024-06-28 04:03:49,119 INFO L125 PetriNetUnfolderBase]: For 8957/8965 co-relation queries the response was YES. [2024-06-28 04:03:49,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8251 conditions, 2039 events. 1315/2039 cut-off events. For 8957/8965 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9938 event pairs, 299 based on Foata normal form. 10/2010 useless extension candidates. Maximal degree in co-relation 8212. Up to 1854 conditions per place. [2024-06-28 04:03:49,131 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 71 selfloop transitions, 17 changer transitions 0/104 dead transitions. [2024-06-28 04:03:49,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 104 transitions, 884 flow [2024-06-28 04:03:49,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:03:49,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:03:49,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-06-28 04:03:49,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4708333333333333 [2024-06-28 04:03:49,133 INFO L175 Difference]: Start difference. First operand has 80 places, 85 transitions, 652 flow. Second operand 6 states and 113 transitions. [2024-06-28 04:03:49,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 104 transitions, 884 flow [2024-06-28 04:03:49,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 104 transitions, 878 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 04:03:49,142 INFO L231 Difference]: Finished difference. Result has 85 places, 87 transitions, 703 flow [2024-06-28 04:03:49,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=703, PETRI_PLACES=85, PETRI_TRANSITIONS=87} [2024-06-28 04:03:49,144 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 44 predicate places. [2024-06-28 04:03:49,146 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 87 transitions, 703 flow [2024-06-28 04:03:49,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:49,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:49,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:49,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 04:03:49,147 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:49,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:49,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1687101112, now seen corresponding path program 2 times [2024-06-28 04:03:49,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:49,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249718834] [2024-06-28 04:03:49,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:49,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:50,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:50,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:50,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249718834] [2024-06-28 04:03:50,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249718834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:50,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:50,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:03:50,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209277640] [2024-06-28 04:03:50,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:50,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:03:50,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:50,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:03:50,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:03:50,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 04:03:50,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 87 transitions, 703 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:50,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:50,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 04:03:50,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:50,688 INFO L124 PetriNetUnfolderBase]: 1393/2166 cut-off events. [2024-06-28 04:03:50,688 INFO L125 PetriNetUnfolderBase]: For 11829/11852 co-relation queries the response was YES. [2024-06-28 04:03:50,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9288 conditions, 2166 events. 1393/2166 cut-off events. For 11829/11852 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10669 event pairs, 392 based on Foata normal form. 13/2138 useless extension candidates. Maximal degree in co-relation 9246. Up to 1966 conditions per place. [2024-06-28 04:03:50,701 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 87 selfloop transitions, 39 changer transitions 0/142 dead transitions. [2024-06-28 04:03:50,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 142 transitions, 1277 flow [2024-06-28 04:03:50,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:03:50,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:03:50,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 04:03:50,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46944444444444444 [2024-06-28 04:03:50,703 INFO L175 Difference]: Start difference. First operand has 85 places, 87 transitions, 703 flow. Second operand 9 states and 169 transitions. [2024-06-28 04:03:50,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 142 transitions, 1277 flow [2024-06-28 04:03:50,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 142 transitions, 1212 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 04:03:50,717 INFO L231 Difference]: Finished difference. Result has 93 places, 112 transitions, 1022 flow [2024-06-28 04:03:50,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1022, PETRI_PLACES=93, PETRI_TRANSITIONS=112} [2024-06-28 04:03:50,718 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 52 predicate places. [2024-06-28 04:03:50,718 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 112 transitions, 1022 flow [2024-06-28 04:03:50,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:50,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:50,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:50,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 04:03:50,719 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:50,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:50,719 INFO L85 PathProgramCache]: Analyzing trace with hash 760639894, now seen corresponding path program 3 times [2024-06-28 04:03:50,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:50,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261042806] [2024-06-28 04:03:50,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:50,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:51,527 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 04:03:51,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:51,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261042806] [2024-06-28 04:03:51,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261042806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:51,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:51,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:03:51,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868100176] [2024-06-28 04:03:51,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:51,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:03:51,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:51,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:03:51,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:03:51,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 04:03:51,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 112 transitions, 1022 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:51,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:51,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 04:03:51,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:52,102 INFO L124 PetriNetUnfolderBase]: 1385/2155 cut-off events. [2024-06-28 04:03:52,102 INFO L125 PetriNetUnfolderBase]: For 13994/14009 co-relation queries the response was YES. [2024-06-28 04:03:52,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9718 conditions, 2155 events. 1385/2155 cut-off events. For 13994/14009 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10607 event pairs, 401 based on Foata normal form. 8/2114 useless extension candidates. Maximal degree in co-relation 9672. Up to 1864 conditions per place. [2024-06-28 04:03:52,117 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 69 selfloop transitions, 46 changer transitions 0/131 dead transitions. [2024-06-28 04:03:52,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 131 transitions, 1328 flow [2024-06-28 04:03:52,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:03:52,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:03:52,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-28 04:03:52,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 04:03:52,118 INFO L175 Difference]: Start difference. First operand has 93 places, 112 transitions, 1022 flow. Second operand 6 states and 115 transitions. [2024-06-28 04:03:52,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 131 transitions, 1328 flow [2024-06-28 04:03:52,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 131 transitions, 1223 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 04:03:52,132 INFO L231 Difference]: Finished difference. Result has 94 places, 114 transitions, 1047 flow [2024-06-28 04:03:52,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1047, PETRI_PLACES=94, PETRI_TRANSITIONS=114} [2024-06-28 04:03:52,133 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 53 predicate places. [2024-06-28 04:03:52,133 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 114 transitions, 1047 flow [2024-06-28 04:03:52,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:52,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:52,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:52,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 04:03:52,134 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:52,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:52,134 INFO L85 PathProgramCache]: Analyzing trace with hash 772518230, now seen corresponding path program 1 times [2024-06-28 04:03:52,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:52,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801457895] [2024-06-28 04:03:52,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:52,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:53,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:53,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:53,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801457895] [2024-06-28 04:03:53,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801457895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:53,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:53,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:03:53,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505985876] [2024-06-28 04:03:53,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:53,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:03:53,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:53,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:03:53,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:03:53,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:03:53,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 114 transitions, 1047 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:53,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:53,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:03:53,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:53,826 INFO L124 PetriNetUnfolderBase]: 1481/2275 cut-off events. [2024-06-28 04:03:53,827 INFO L125 PetriNetUnfolderBase]: For 14275/14275 co-relation queries the response was YES. [2024-06-28 04:03:53,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10397 conditions, 2275 events. 1481/2275 cut-off events. For 14275/14275 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10942 event pairs, 424 based on Foata normal form. 2/2276 useless extension candidates. Maximal degree in co-relation 10352. Up to 2027 conditions per place. [2024-06-28 04:03:53,841 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 95 selfloop transitions, 40 changer transitions 0/139 dead transitions. [2024-06-28 04:03:53,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 139 transitions, 1413 flow [2024-06-28 04:03:53,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:03:53,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:03:53,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-28 04:03:53,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-28 04:03:53,843 INFO L175 Difference]: Start difference. First operand has 94 places, 114 transitions, 1047 flow. Second operand 7 states and 130 transitions. [2024-06-28 04:03:53,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 139 transitions, 1413 flow [2024-06-28 04:03:53,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 139 transitions, 1311 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 04:03:53,864 INFO L231 Difference]: Finished difference. Result has 97 places, 117 transitions, 1071 flow [2024-06-28 04:03:53,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1071, PETRI_PLACES=97, PETRI_TRANSITIONS=117} [2024-06-28 04:03:53,865 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 56 predicate places. [2024-06-28 04:03:53,865 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 117 transitions, 1071 flow [2024-06-28 04:03:53,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:53,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:53,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:53,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 04:03:53,866 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:53,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:53,866 INFO L85 PathProgramCache]: Analyzing trace with hash 2006512804, now seen corresponding path program 2 times [2024-06-28 04:03:53,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:53,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804624708] [2024-06-28 04:03:53,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:53,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:53,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:54,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:54,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:54,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804624708] [2024-06-28 04:03:54,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804624708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:54,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:54,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:03:54,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106562105] [2024-06-28 04:03:54,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:54,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:03:54,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:54,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:03:54,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:03:55,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:03:55,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 117 transitions, 1071 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:55,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:55,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:03:55,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:55,498 INFO L124 PetriNetUnfolderBase]: 1487/2286 cut-off events. [2024-06-28 04:03:55,498 INFO L125 PetriNetUnfolderBase]: For 14343/14347 co-relation queries the response was YES. [2024-06-28 04:03:55,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10628 conditions, 2286 events. 1487/2286 cut-off events. For 14343/14347 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 11051 event pairs, 416 based on Foata normal form. 6/2291 useless extension candidates. Maximal degree in co-relation 10582. Up to 2095 conditions per place. [2024-06-28 04:03:55,512 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 118 selfloop transitions, 32 changer transitions 0/154 dead transitions. [2024-06-28 04:03:55,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 154 transitions, 1540 flow [2024-06-28 04:03:55,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:03:55,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:03:55,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 04:03:55,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-28 04:03:55,514 INFO L175 Difference]: Start difference. First operand has 97 places, 117 transitions, 1071 flow. Second operand 9 states and 161 transitions. [2024-06-28 04:03:55,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 154 transitions, 1540 flow [2024-06-28 04:03:55,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 154 transitions, 1447 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 04:03:55,535 INFO L231 Difference]: Finished difference. Result has 101 places, 123 transitions, 1123 flow [2024-06-28 04:03:55,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1123, PETRI_PLACES=101, PETRI_TRANSITIONS=123} [2024-06-28 04:03:55,536 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 60 predicate places. [2024-06-28 04:03:55,536 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 123 transitions, 1123 flow [2024-06-28 04:03:55,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:55,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:55,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:55,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 04:03:55,537 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:55,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:55,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1662404534, now seen corresponding path program 1 times [2024-06-28 04:03:55,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:55,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567412228] [2024-06-28 04:03:55,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:55,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:56,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:56,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:56,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567412228] [2024-06-28 04:03:56,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567412228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:56,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:56,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:03:56,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509863158] [2024-06-28 04:03:56,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:56,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:03:56,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:56,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:03:56,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:03:56,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:03:56,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 123 transitions, 1123 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:56,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:56,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:03:56,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:57,097 INFO L124 PetriNetUnfolderBase]: 1504/2311 cut-off events. [2024-06-28 04:03:57,097 INFO L125 PetriNetUnfolderBase]: For 14547/14547 co-relation queries the response was YES. [2024-06-28 04:03:57,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10715 conditions, 2311 events. 1504/2311 cut-off events. For 14547/14547 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 11095 event pairs, 261 based on Foata normal form. 4/2314 useless extension candidates. Maximal degree in co-relation 10668. Up to 2127 conditions per place. [2024-06-28 04:03:57,112 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 128 selfloop transitions, 19 changer transitions 0/151 dead transitions. [2024-06-28 04:03:57,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 151 transitions, 1533 flow [2024-06-28 04:03:57,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:03:57,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:03:57,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-28 04:03:57,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-06-28 04:03:57,113 INFO L175 Difference]: Start difference. First operand has 101 places, 123 transitions, 1123 flow. Second operand 7 states and 124 transitions. [2024-06-28 04:03:57,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 151 transitions, 1533 flow [2024-06-28 04:03:57,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 151 transitions, 1451 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 04:03:57,131 INFO L231 Difference]: Finished difference. Result has 104 places, 129 transitions, 1152 flow [2024-06-28 04:03:57,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1152, PETRI_PLACES=104, PETRI_TRANSITIONS=129} [2024-06-28 04:03:57,132 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 63 predicate places. [2024-06-28 04:03:57,132 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 129 transitions, 1152 flow [2024-06-28 04:03:57,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:57,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:57,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:57,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 04:03:57,132 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:57,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:57,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1206151954, now seen corresponding path program 2 times [2024-06-28 04:03:57,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:57,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192203382] [2024-06-28 04:03:57,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:57,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:58,134 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 04:03:58,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:58,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192203382] [2024-06-28 04:03:58,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192203382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:58,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:58,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:03:58,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501481921] [2024-06-28 04:03:58,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:58,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:03:58,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:58,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:03:58,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:03:58,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:03:58,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 129 transitions, 1152 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:58,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:58,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:03:58,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:58,676 INFO L124 PetriNetUnfolderBase]: 1521/2338 cut-off events. [2024-06-28 04:03:58,676 INFO L125 PetriNetUnfolderBase]: For 16690/16690 co-relation queries the response was YES. [2024-06-28 04:03:58,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11089 conditions, 2338 events. 1521/2338 cut-off events. For 16690/16690 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 11297 event pairs, 385 based on Foata normal form. 4/2341 useless extension candidates. Maximal degree in co-relation 11039. Up to 2086 conditions per place. [2024-06-28 04:03:58,692 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 113 selfloop transitions, 37 changer transitions 0/154 dead transitions. [2024-06-28 04:03:58,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 154 transitions, 1549 flow [2024-06-28 04:03:58,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:03:58,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:03:58,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 04:03:58,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-28 04:03:58,693 INFO L175 Difference]: Start difference. First operand has 104 places, 129 transitions, 1152 flow. Second operand 7 states and 128 transitions. [2024-06-28 04:03:58,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 154 transitions, 1549 flow [2024-06-28 04:03:58,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 154 transitions, 1503 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-28 04:03:58,717 INFO L231 Difference]: Finished difference. Result has 109 places, 132 transitions, 1223 flow [2024-06-28 04:03:58,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1106, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1223, PETRI_PLACES=109, PETRI_TRANSITIONS=132} [2024-06-28 04:03:58,717 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 68 predicate places. [2024-06-28 04:03:58,717 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 132 transitions, 1223 flow [2024-06-28 04:03:58,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:58,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:58,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:58,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 04:03:58,718 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:58,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:58,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1119312274, now seen corresponding path program 3 times [2024-06-28 04:03:58,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:58,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120330305] [2024-06-28 04:03:58,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:58,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:59,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:59,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:59,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120330305] [2024-06-28 04:03:59,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120330305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:59,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:59,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:03:59,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750709884] [2024-06-28 04:03:59,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:59,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:03:59,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:59,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:03:59,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:03:59,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:03:59,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 132 transitions, 1223 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:59,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:59,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:03:59,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:00,077 INFO L124 PetriNetUnfolderBase]: 1513/2326 cut-off events. [2024-06-28 04:04:00,077 INFO L125 PetriNetUnfolderBase]: For 18687/18687 co-relation queries the response was YES. [2024-06-28 04:04:00,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11448 conditions, 2326 events. 1513/2326 cut-off events. For 18687/18687 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 11227 event pairs, 374 based on Foata normal form. 4/2329 useless extension candidates. Maximal degree in co-relation 11396. Up to 2000 conditions per place. [2024-06-28 04:04:00,092 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 117 selfloop transitions, 38 changer transitions 0/159 dead transitions. [2024-06-28 04:04:00,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 159 transitions, 1653 flow [2024-06-28 04:04:00,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:04:00,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:04:00,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 04:04:00,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-28 04:04:00,094 INFO L175 Difference]: Start difference. First operand has 109 places, 132 transitions, 1223 flow. Second operand 7 states and 128 transitions. [2024-06-28 04:04:00,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 159 transitions, 1653 flow [2024-06-28 04:04:00,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 159 transitions, 1569 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 04:04:00,151 INFO L231 Difference]: Finished difference. Result has 112 places, 137 transitions, 1295 flow [2024-06-28 04:04:00,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1295, PETRI_PLACES=112, PETRI_TRANSITIONS=137} [2024-06-28 04:04:00,152 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 71 predicate places. [2024-06-28 04:04:00,152 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 137 transitions, 1295 flow [2024-06-28 04:04:00,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:00,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:00,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:00,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 04:04:00,153 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:00,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:00,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1928263856, now seen corresponding path program 1 times [2024-06-28 04:04:00,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:00,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69810489] [2024-06-28 04:04:00,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:00,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:01,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:01,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:01,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69810489] [2024-06-28 04:04:01,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69810489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:01,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:01,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:04:01,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550972824] [2024-06-28 04:04:01,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:01,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:04:01,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:01,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:04:01,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:04:01,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:01,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 137 transitions, 1295 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:01,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:01,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:01,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:02,158 INFO L124 PetriNetUnfolderBase]: 1571/2434 cut-off events. [2024-06-28 04:04:02,158 INFO L125 PetriNetUnfolderBase]: For 22927/22927 co-relation queries the response was YES. [2024-06-28 04:04:02,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12187 conditions, 2434 events. 1571/2434 cut-off events. For 22927/22927 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12015 event pairs, 344 based on Foata normal form. 16/2449 useless extension candidates. Maximal degree in co-relation 12133. Up to 2070 conditions per place. [2024-06-28 04:04:02,175 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 130 selfloop transitions, 36 changer transitions 0/170 dead transitions. [2024-06-28 04:04:02,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 170 transitions, 1766 flow [2024-06-28 04:04:02,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:04:02,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:04:02,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 04:04:02,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 04:04:02,182 INFO L175 Difference]: Start difference. First operand has 112 places, 137 transitions, 1295 flow. Second operand 8 states and 150 transitions. [2024-06-28 04:04:02,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 170 transitions, 1766 flow [2024-06-28 04:04:02,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 170 transitions, 1672 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 04:04:02,264 INFO L231 Difference]: Finished difference. Result has 116 places, 139 transitions, 1314 flow [2024-06-28 04:04:02,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1203, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1314, PETRI_PLACES=116, PETRI_TRANSITIONS=139} [2024-06-28 04:04:02,264 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 75 predicate places. [2024-06-28 04:04:02,265 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 139 transitions, 1314 flow [2024-06-28 04:04:02,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:02,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:02,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:02,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 04:04:02,265 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:02,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:02,266 INFO L85 PathProgramCache]: Analyzing trace with hash 490788510, now seen corresponding path program 2 times [2024-06-28 04:04:02,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:02,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109227357] [2024-06-28 04:04:02,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:02,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:03,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:03,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:03,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109227357] [2024-06-28 04:04:03,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109227357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:03,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:03,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:04:03,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828669909] [2024-06-28 04:04:03,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:03,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:04:03,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:03,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:04:03,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:04:03,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:03,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 139 transitions, 1314 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:03,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:03,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:03,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:04,124 INFO L124 PetriNetUnfolderBase]: 1673/2610 cut-off events. [2024-06-28 04:04:04,125 INFO L125 PetriNetUnfolderBase]: For 25916/25920 co-relation queries the response was YES. [2024-06-28 04:04:04,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13234 conditions, 2610 events. 1673/2610 cut-off events. For 25916/25920 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 13151 event pairs, 377 based on Foata normal form. 16/2625 useless extension candidates. Maximal degree in co-relation 13179. Up to 2041 conditions per place. [2024-06-28 04:04:04,142 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 143 selfloop transitions, 36 changer transitions 0/183 dead transitions. [2024-06-28 04:04:04,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 183 transitions, 1923 flow [2024-06-28 04:04:04,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:04:04,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:04:04,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 04:04:04,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46944444444444444 [2024-06-28 04:04:04,143 INFO L175 Difference]: Start difference. First operand has 116 places, 139 transitions, 1314 flow. Second operand 9 states and 169 transitions. [2024-06-28 04:04:04,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 183 transitions, 1923 flow [2024-06-28 04:04:04,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 183 transitions, 1836 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 04:04:04,179 INFO L231 Difference]: Finished difference. Result has 119 places, 141 transitions, 1343 flow [2024-06-28 04:04:04,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1227, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1343, PETRI_PLACES=119, PETRI_TRANSITIONS=141} [2024-06-28 04:04:04,179 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 78 predicate places. [2024-06-28 04:04:04,179 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 141 transitions, 1343 flow [2024-06-28 04:04:04,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:04,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:04,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:04,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 04:04:04,180 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:04,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:04,181 INFO L85 PathProgramCache]: Analyzing trace with hash 490781070, now seen corresponding path program 3 times [2024-06-28 04:04:04,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:04,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450491803] [2024-06-28 04:04:04,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:04,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:05,255 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 04:04:05,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:05,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450491803] [2024-06-28 04:04:05,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450491803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:05,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:05,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:04:05,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169724208] [2024-06-28 04:04:05,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:05,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:04:05,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:05,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:04:05,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:04:05,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:05,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 141 transitions, 1343 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:05,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:05,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:05,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:05,973 INFO L124 PetriNetUnfolderBase]: 1662/2593 cut-off events. [2024-06-28 04:04:05,973 INFO L125 PetriNetUnfolderBase]: For 27385/27389 co-relation queries the response was YES. [2024-06-28 04:04:05,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13064 conditions, 2593 events. 1662/2593 cut-off events. For 27385/27389 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 13034 event pairs, 406 based on Foata normal form. 20/2612 useless extension candidates. Maximal degree in co-relation 13008. Up to 2282 conditions per place. [2024-06-28 04:04:05,991 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 143 selfloop transitions, 35 changer transitions 0/182 dead transitions. [2024-06-28 04:04:05,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 182 transitions, 1856 flow [2024-06-28 04:04:05,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:04:05,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:04:05,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-28 04:04:05,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 04:04:05,993 INFO L175 Difference]: Start difference. First operand has 119 places, 141 transitions, 1343 flow. Second operand 10 states and 180 transitions. [2024-06-28 04:04:05,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 182 transitions, 1856 flow [2024-06-28 04:04:06,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 182 transitions, 1803 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 04:04:06,033 INFO L231 Difference]: Finished difference. Result has 124 places, 143 transitions, 1393 flow [2024-06-28 04:04:06,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1290, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1393, PETRI_PLACES=124, PETRI_TRANSITIONS=143} [2024-06-28 04:04:06,034 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 83 predicate places. [2024-06-28 04:04:06,034 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 143 transitions, 1393 flow [2024-06-28 04:04:06,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:06,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:06,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:06,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 04:04:06,035 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:06,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:06,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1593032044, now seen corresponding path program 1 times [2024-06-28 04:04:06,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:06,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770351705] [2024-06-28 04:04:06,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:06,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:06,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:06,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:06,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770351705] [2024-06-28 04:04:06,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770351705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:06,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:06,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:04:06,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884100737] [2024-06-28 04:04:06,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:06,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:04:06,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:06,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:04:06,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:04:06,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:06,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 143 transitions, 1393 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 04:04:06,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:06,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:06,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:07,111 INFO L124 PetriNetUnfolderBase]: 1682/2623 cut-off events. [2024-06-28 04:04:07,111 INFO L125 PetriNetUnfolderBase]: For 28383/28383 co-relation queries the response was YES. [2024-06-28 04:04:07,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13427 conditions, 2623 events. 1682/2623 cut-off events. For 28383/28383 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 13208 event pairs, 420 based on Foata normal form. 4/2626 useless extension candidates. Maximal degree in co-relation 13369. Up to 2461 conditions per place. [2024-06-28 04:04:07,131 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 119 selfloop transitions, 32 changer transitions 0/155 dead transitions. [2024-06-28 04:04:07,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 155 transitions, 1749 flow [2024-06-28 04:04:07,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:04:07,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:04:07,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-06-28 04:04:07,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46 [2024-06-28 04:04:07,132 INFO L175 Difference]: Start difference. First operand has 124 places, 143 transitions, 1393 flow. Second operand 5 states and 92 transitions. [2024-06-28 04:04:07,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 155 transitions, 1749 flow [2024-06-28 04:04:07,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 155 transitions, 1670 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 04:04:07,174 INFO L231 Difference]: Finished difference. Result has 120 places, 146 transitions, 1422 flow [2024-06-28 04:04:07,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1422, PETRI_PLACES=120, PETRI_TRANSITIONS=146} [2024-06-28 04:04:07,175 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 79 predicate places. [2024-06-28 04:04:07,175 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 146 transitions, 1422 flow [2024-06-28 04:04:07,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 04:04:07,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:07,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:07,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 04:04:07,175 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:07,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:07,176 INFO L85 PathProgramCache]: Analyzing trace with hash -366709414, now seen corresponding path program 2 times [2024-06-28 04:04:07,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:07,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392852753] [2024-06-28 04:04:07,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:07,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:07,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:07,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:07,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392852753] [2024-06-28 04:04:07,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392852753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:07,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:07,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:07,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878509041] [2024-06-28 04:04:07,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:07,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:07,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:07,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:07,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:07,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:07,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 146 transitions, 1422 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:07,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:07,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:07,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:08,491 INFO L124 PetriNetUnfolderBase]: 1670/2607 cut-off events. [2024-06-28 04:04:08,492 INFO L125 PetriNetUnfolderBase]: For 30175/30175 co-relation queries the response was YES. [2024-06-28 04:04:08,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13609 conditions, 2607 events. 1670/2607 cut-off events. For 30175/30175 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 13105 event pairs, 418 based on Foata normal form. 4/2610 useless extension candidates. Maximal degree in co-relation 13550. Up to 2429 conditions per place. [2024-06-28 04:04:08,511 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 122 selfloop transitions, 35 changer transitions 0/161 dead transitions. [2024-06-28 04:04:08,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 161 transitions, 1808 flow [2024-06-28 04:04:08,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:04:08,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:04:08,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-28 04:04:08,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44583333333333336 [2024-06-28 04:04:08,512 INFO L175 Difference]: Start difference. First operand has 120 places, 146 transitions, 1422 flow. Second operand 6 states and 107 transitions. [2024-06-28 04:04:08,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 161 transitions, 1808 flow [2024-06-28 04:04:08,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 161 transitions, 1732 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 04:04:08,556 INFO L231 Difference]: Finished difference. Result has 123 places, 149 transitions, 1458 flow [2024-06-28 04:04:08,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1350, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1458, PETRI_PLACES=123, PETRI_TRANSITIONS=149} [2024-06-28 04:04:08,557 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 82 predicate places. [2024-06-28 04:04:08,557 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 149 transitions, 1458 flow [2024-06-28 04:04:08,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:08,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:08,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:08,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 04:04:08,558 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:08,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:08,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1163111206, now seen corresponding path program 1 times [2024-06-28 04:04:08,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:08,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945457022] [2024-06-28 04:04:08,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:08,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:09,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:09,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:09,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945457022] [2024-06-28 04:04:09,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945457022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:09,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:09,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:04:09,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461225001] [2024-06-28 04:04:09,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:09,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:04:09,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:09,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:04:09,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:04:09,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 04:04:09,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 149 transitions, 1458 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 04:04:09,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:09,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 04:04:09,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:09,551 INFO L124 PetriNetUnfolderBase]: 1581/2516 cut-off events. [2024-06-28 04:04:09,551 INFO L125 PetriNetUnfolderBase]: For 30890/30895 co-relation queries the response was YES. [2024-06-28 04:04:09,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13534 conditions, 2516 events. 1581/2516 cut-off events. For 30890/30895 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 12827 event pairs, 399 based on Foata normal form. 5/2513 useless extension candidates. Maximal degree in co-relation 13474. Up to 2321 conditions per place. [2024-06-28 04:04:09,571 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 132 selfloop transitions, 36 changer transitions 0/175 dead transitions. [2024-06-28 04:04:09,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 175 transitions, 1982 flow [2024-06-28 04:04:09,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:04:09,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:04:09,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-28 04:04:09,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46785714285714286 [2024-06-28 04:04:09,573 INFO L175 Difference]: Start difference. First operand has 123 places, 149 transitions, 1458 flow. Second operand 7 states and 131 transitions. [2024-06-28 04:04:09,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 175 transitions, 1982 flow [2024-06-28 04:04:09,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 175 transitions, 1896 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 04:04:09,623 INFO L231 Difference]: Finished difference. Result has 126 places, 155 transitions, 1534 flow [2024-06-28 04:04:09,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1372, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1534, PETRI_PLACES=126, PETRI_TRANSITIONS=155} [2024-06-28 04:04:09,624 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 85 predicate places. [2024-06-28 04:04:09,624 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 155 transitions, 1534 flow [2024-06-28 04:04:09,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 04:04:09,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:09,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:09,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 04:04:09,625 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:09,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:09,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1163231362, now seen corresponding path program 1 times [2024-06-28 04:04:09,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:09,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744885441] [2024-06-28 04:04:09,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:09,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:10,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:10,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:10,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744885441] [2024-06-28 04:04:10,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744885441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:10,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:10,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:04:10,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719277581] [2024-06-28 04:04:10,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:10,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:04:10,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:10,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:04:10,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:04:10,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:10,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 155 transitions, 1534 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 04:04:10,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:10,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:10,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:10,646 INFO L124 PetriNetUnfolderBase]: 1716/2670 cut-off events. [2024-06-28 04:04:10,646 INFO L125 PetriNetUnfolderBase]: For 34478/34478 co-relation queries the response was YES. [2024-06-28 04:04:10,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14445 conditions, 2670 events. 1716/2670 cut-off events. For 34478/34478 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 13429 event pairs, 416 based on Foata normal form. 2/2671 useless extension candidates. Maximal degree in co-relation 14384. Up to 2574 conditions per place. [2024-06-28 04:04:10,664 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 163 selfloop transitions, 20 changer transitions 0/187 dead transitions. [2024-06-28 04:04:10,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 187 transitions, 2115 flow [2024-06-28 04:04:10,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:04:10,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:04:10,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 04:04:10,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-06-28 04:04:10,666 INFO L175 Difference]: Start difference. First operand has 126 places, 155 transitions, 1534 flow. Second operand 7 states and 122 transitions. [2024-06-28 04:04:10,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 187 transitions, 2115 flow [2024-06-28 04:04:10,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 187 transitions, 2049 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-28 04:04:10,716 INFO L231 Difference]: Finished difference. Result has 133 places, 170 transitions, 1673 flow [2024-06-28 04:04:10,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1473, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1673, PETRI_PLACES=133, PETRI_TRANSITIONS=170} [2024-06-28 04:04:10,716 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 92 predicate places. [2024-06-28 04:04:10,716 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 170 transitions, 1673 flow [2024-06-28 04:04:10,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 04:04:10,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:10,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:10,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 04:04:10,717 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:10,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:10,718 INFO L85 PathProgramCache]: Analyzing trace with hash -98998300, now seen corresponding path program 2 times [2024-06-28 04:04:10,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:10,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018080032] [2024-06-28 04:04:10,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:10,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:11,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:11,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:11,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018080032] [2024-06-28 04:04:11,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018080032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:11,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:11,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:11,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844304631] [2024-06-28 04:04:11,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:11,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:11,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:11,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:11,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:11,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 04:04:11,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 170 transitions, 1673 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:11,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:11,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 04:04:11,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:12,018 INFO L124 PetriNetUnfolderBase]: 1652/2614 cut-off events. [2024-06-28 04:04:12,018 INFO L125 PetriNetUnfolderBase]: For 37658/37661 co-relation queries the response was YES. [2024-06-28 04:04:12,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14758 conditions, 2614 events. 1652/2614 cut-off events. For 37658/37661 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 13328 event pairs, 399 based on Foata normal form. 5/2615 useless extension candidates. Maximal degree in co-relation 14692. Up to 2428 conditions per place. [2024-06-28 04:04:12,038 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 146 selfloop transitions, 35 changer transitions 0/192 dead transitions. [2024-06-28 04:04:12,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 192 transitions, 2174 flow [2024-06-28 04:04:12,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:04:12,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:04:12,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-28 04:04:12,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 04:04:12,040 INFO L175 Difference]: Start difference. First operand has 133 places, 170 transitions, 1673 flow. Second operand 7 states and 126 transitions. [2024-06-28 04:04:12,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 192 transitions, 2174 flow [2024-06-28 04:04:12,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 192 transitions, 2154 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-28 04:04:12,108 INFO L231 Difference]: Finished difference. Result has 139 places, 176 transitions, 1811 flow [2024-06-28 04:04:12,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1653, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1811, PETRI_PLACES=139, PETRI_TRANSITIONS=176} [2024-06-28 04:04:12,108 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 98 predicate places. [2024-06-28 04:04:12,108 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 176 transitions, 1811 flow [2024-06-28 04:04:12,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:12,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:12,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:12,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 04:04:12,109 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:12,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:12,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1569157762, now seen corresponding path program 2 times [2024-06-28 04:04:12,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:12,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896399004] [2024-06-28 04:04:12,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:12,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:12,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:12,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896399004] [2024-06-28 04:04:12,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896399004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:12,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:12,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:12,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22854009] [2024-06-28 04:04:12,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:12,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:12,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:12,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:12,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:12,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:12,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 176 transitions, 1811 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:12,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:12,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:12,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:13,225 INFO L124 PetriNetUnfolderBase]: 1751/2721 cut-off events. [2024-06-28 04:04:13,225 INFO L125 PetriNetUnfolderBase]: For 40972/40972 co-relation queries the response was YES. [2024-06-28 04:04:13,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15528 conditions, 2721 events. 1751/2721 cut-off events. For 40972/40972 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 13705 event pairs, 419 based on Foata normal form. 2/2722 useless extension candidates. Maximal degree in co-relation 15459. Up to 2619 conditions per place. [2024-06-28 04:04:13,245 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 168 selfloop transitions, 23 changer transitions 0/195 dead transitions. [2024-06-28 04:04:13,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 195 transitions, 2324 flow [2024-06-28 04:04:13,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:04:13,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:04:13,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-28 04:04:13,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45416666666666666 [2024-06-28 04:04:13,247 INFO L175 Difference]: Start difference. First operand has 139 places, 176 transitions, 1811 flow. Second operand 6 states and 109 transitions. [2024-06-28 04:04:13,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 195 transitions, 2324 flow [2024-06-28 04:04:13,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 195 transitions, 2223 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 04:04:13,315 INFO L231 Difference]: Finished difference. Result has 142 places, 180 transitions, 1816 flow [2024-06-28 04:04:13,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1714, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1816, PETRI_PLACES=142, PETRI_TRANSITIONS=180} [2024-06-28 04:04:13,315 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 101 predicate places. [2024-06-28 04:04:13,315 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 180 transitions, 1816 flow [2024-06-28 04:04:13,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:13,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:13,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:13,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 04:04:13,316 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:13,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:13,316 INFO L85 PathProgramCache]: Analyzing trace with hash -366703462, now seen corresponding path program 3 times [2024-06-28 04:04:13,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:13,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840800358] [2024-06-28 04:04:13,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:13,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:13,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:13,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:13,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840800358] [2024-06-28 04:04:13,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840800358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:13,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:13,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:04:13,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944992045] [2024-06-28 04:04:13,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:13,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:04:13,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:13,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:04:13,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:04:13,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:13,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 180 transitions, 1816 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 04:04:13,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:13,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:13,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:14,376 INFO L124 PetriNetUnfolderBase]: 1745/2713 cut-off events. [2024-06-28 04:04:14,377 INFO L125 PetriNetUnfolderBase]: For 43153/43153 co-relation queries the response was YES. [2024-06-28 04:04:14,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15543 conditions, 2713 events. 1745/2713 cut-off events. For 43153/43153 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 13652 event pairs, 417 based on Foata normal form. 2/2714 useless extension candidates. Maximal degree in co-relation 15472. Up to 2641 conditions per place. [2024-06-28 04:04:14,396 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 175 selfloop transitions, 12 changer transitions 0/191 dead transitions. [2024-06-28 04:04:14,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 191 transitions, 2235 flow [2024-06-28 04:04:14,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:04:14,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:04:14,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-28 04:04:14,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42083333333333334 [2024-06-28 04:04:14,397 INFO L175 Difference]: Start difference. First operand has 142 places, 180 transitions, 1816 flow. Second operand 6 states and 101 transitions. [2024-06-28 04:04:14,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 191 transitions, 2235 flow [2024-06-28 04:04:14,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 191 transitions, 2184 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 04:04:14,475 INFO L231 Difference]: Finished difference. Result has 144 places, 181 transitions, 1805 flow [2024-06-28 04:04:14,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1766, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1805, PETRI_PLACES=144, PETRI_TRANSITIONS=181} [2024-06-28 04:04:14,476 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 103 predicate places. [2024-06-28 04:04:14,476 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 181 transitions, 1805 flow [2024-06-28 04:04:14,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 04:04:14,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:14,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:14,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 04:04:14,477 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:14,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:14,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1569157576, now seen corresponding path program 3 times [2024-06-28 04:04:14,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:14,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814076394] [2024-06-28 04:04:14,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:14,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:15,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:15,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:15,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814076394] [2024-06-28 04:04:15,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814076394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:15,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:15,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:15,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625070117] [2024-06-28 04:04:15,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:15,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:15,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:15,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:15,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:15,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 04:04:15,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 181 transitions, 1805 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:15,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:15,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 04:04:15,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:15,663 INFO L124 PetriNetUnfolderBase]: 1645/2604 cut-off events. [2024-06-28 04:04:15,664 INFO L125 PetriNetUnfolderBase]: For 41742/41745 co-relation queries the response was YES. [2024-06-28 04:04:15,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14889 conditions, 2604 events. 1645/2604 cut-off events. For 41742/41745 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 13207 event pairs, 395 based on Foata normal form. 5/2605 useless extension candidates. Maximal degree in co-relation 14818. Up to 2395 conditions per place. [2024-06-28 04:04:15,684 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 146 selfloop transitions, 39 changer transitions 0/198 dead transitions. [2024-06-28 04:04:15,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 198 transitions, 2239 flow [2024-06-28 04:04:15,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:04:15,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:04:15,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-28 04:04:15,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 04:04:15,685 INFO L175 Difference]: Start difference. First operand has 144 places, 181 transitions, 1805 flow. Second operand 6 states and 115 transitions. [2024-06-28 04:04:15,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 198 transitions, 2239 flow [2024-06-28 04:04:15,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 198 transitions, 2191 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 04:04:15,767 INFO L231 Difference]: Finished difference. Result has 147 places, 181 transitions, 1853 flow [2024-06-28 04:04:15,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1757, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1853, PETRI_PLACES=147, PETRI_TRANSITIONS=181} [2024-06-28 04:04:15,768 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 106 predicate places. [2024-06-28 04:04:15,768 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 181 transitions, 1853 flow [2024-06-28 04:04:15,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:15,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:15,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:15,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 04:04:15,769 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:15,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:15,769 INFO L85 PathProgramCache]: Analyzing trace with hash -366694534, now seen corresponding path program 1 times [2024-06-28 04:04:15,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:15,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381998565] [2024-06-28 04:04:15,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:15,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:16,816 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 04:04:16,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:16,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381998565] [2024-06-28 04:04:16,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381998565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:16,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:16,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:04:16,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063928960] [2024-06-28 04:04:16,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:16,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:04:16,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:16,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:04:16,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:04:16,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:16,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 181 transitions, 1853 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:16,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:16,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:16,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:17,363 INFO L124 PetriNetUnfolderBase]: 1731/2694 cut-off events. [2024-06-28 04:04:17,363 INFO L125 PetriNetUnfolderBase]: For 44478/44478 co-relation queries the response was YES. [2024-06-28 04:04:17,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15512 conditions, 2694 events. 1731/2694 cut-off events. For 44478/44478 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 13500 event pairs, 413 based on Foata normal form. 2/2695 useless extension candidates. Maximal degree in co-relation 15440. Up to 2619 conditions per place. [2024-06-28 04:04:17,384 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 176 selfloop transitions, 13 changer transitions 0/193 dead transitions. [2024-06-28 04:04:17,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 193 transitions, 2282 flow [2024-06-28 04:04:17,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:04:17,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:04:17,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-28 04:04:17,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42083333333333334 [2024-06-28 04:04:17,385 INFO L175 Difference]: Start difference. First operand has 147 places, 181 transitions, 1853 flow. Second operand 6 states and 101 transitions. [2024-06-28 04:04:17,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 193 transitions, 2282 flow [2024-06-28 04:04:17,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 193 transitions, 2193 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 04:04:17,448 INFO L231 Difference]: Finished difference. Result has 148 places, 183 transitions, 1815 flow [2024-06-28 04:04:17,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1764, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1815, PETRI_PLACES=148, PETRI_TRANSITIONS=183} [2024-06-28 04:04:17,451 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 107 predicate places. [2024-06-28 04:04:17,451 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 183 transitions, 1815 flow [2024-06-28 04:04:17,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:17,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:17,451 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 04:04:17,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 04:04:17,452 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:17,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:17,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1836112693, now seen corresponding path program 1 times [2024-06-28 04:04:17,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:17,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90312064] [2024-06-28 04:04:17,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:17,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:18,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:18,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:18,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90312064] [2024-06-28 04:04:18,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90312064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:18,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:18,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:04:18,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237246925] [2024-06-28 04:04:18,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:18,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:04:18,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:18,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:04:18,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:04:18,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:18,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 183 transitions, 1815 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:18,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:18,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:18,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:19,128 INFO L124 PetriNetUnfolderBase]: 1772/2766 cut-off events. [2024-06-28 04:04:19,128 INFO L125 PetriNetUnfolderBase]: For 49685/49685 co-relation queries the response was YES. [2024-06-28 04:04:19,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15963 conditions, 2766 events. 1772/2766 cut-off events. For 49685/49685 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 13882 event pairs, 269 based on Foata normal form. 12/2777 useless extension candidates. Maximal degree in co-relation 15890. Up to 2497 conditions per place. [2024-06-28 04:04:19,149 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 189 selfloop transitions, 20 changer transitions 0/213 dead transitions. [2024-06-28 04:04:19,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 213 transitions, 2348 flow [2024-06-28 04:04:19,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:04:19,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:04:19,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 04:04:19,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.440625 [2024-06-28 04:04:19,151 INFO L175 Difference]: Start difference. First operand has 148 places, 183 transitions, 1815 flow. Second operand 8 states and 141 transitions. [2024-06-28 04:04:19,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 213 transitions, 2348 flow [2024-06-28 04:04:19,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 213 transitions, 2311 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 04:04:19,270 INFO L231 Difference]: Finished difference. Result has 152 places, 184 transitions, 1848 flow [2024-06-28 04:04:19,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1780, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1848, PETRI_PLACES=152, PETRI_TRANSITIONS=184} [2024-06-28 04:04:19,271 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 111 predicate places. [2024-06-28 04:04:19,271 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 184 transitions, 1848 flow [2024-06-28 04:04:19,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:19,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:19,271 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 04:04:19,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 04:04:19,271 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:19,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:19,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1263993705, now seen corresponding path program 2 times [2024-06-28 04:04:19,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:19,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385185339] [2024-06-28 04:04:19,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:19,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:20,551 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 04:04:20,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:20,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385185339] [2024-06-28 04:04:20,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385185339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:20,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:20,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:04:20,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701042365] [2024-06-28 04:04:20,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:20,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:04:20,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:20,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:04:20,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:04:20,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:20,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 184 transitions, 1848 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:20,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:20,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:20,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:21,251 INFO L124 PetriNetUnfolderBase]: 1854/2908 cut-off events. [2024-06-28 04:04:21,251 INFO L125 PetriNetUnfolderBase]: For 53842/53842 co-relation queries the response was YES. [2024-06-28 04:04:21,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16764 conditions, 2908 events. 1854/2908 cut-off events. For 53842/53842 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 14931 event pairs, 416 based on Foata normal form. 12/2919 useless extension candidates. Maximal degree in co-relation 16690. Up to 2479 conditions per place. [2024-06-28 04:04:21,274 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 168 selfloop transitions, 43 changer transitions 0/215 dead transitions. [2024-06-28 04:04:21,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 215 transitions, 2410 flow [2024-06-28 04:04:21,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:04:21,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:04:21,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 04:04:21,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-28 04:04:21,276 INFO L175 Difference]: Start difference. First operand has 152 places, 184 transitions, 1848 flow. Second operand 8 states and 145 transitions. [2024-06-28 04:04:21,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 215 transitions, 2410 flow [2024-06-28 04:04:21,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 215 transitions, 2360 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 04:04:21,355 INFO L231 Difference]: Finished difference. Result has 154 places, 186 transitions, 1930 flow [2024-06-28 04:04:21,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1798, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1930, PETRI_PLACES=154, PETRI_TRANSITIONS=186} [2024-06-28 04:04:21,355 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 113 predicate places. [2024-06-28 04:04:21,355 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 186 transitions, 1930 flow [2024-06-28 04:04:21,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:21,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:21,356 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 04:04:21,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 04:04:21,356 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:21,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:21,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1268577675, now seen corresponding path program 3 times [2024-06-28 04:04:21,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:21,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805951672] [2024-06-28 04:04:21,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:21,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:22,541 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 04:04:22,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:22,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805951672] [2024-06-28 04:04:22,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805951672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:22,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:22,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:04:22,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844175442] [2024-06-28 04:04:22,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:22,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:04:22,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:22,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:04:22,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:04:22,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:22,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 186 transitions, 1930 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:22,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:22,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:22,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:23,250 INFO L124 PetriNetUnfolderBase]: 1834/2876 cut-off events. [2024-06-28 04:04:23,250 INFO L125 PetriNetUnfolderBase]: For 55272/55272 co-relation queries the response was YES. [2024-06-28 04:04:23,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16608 conditions, 2876 events. 1834/2876 cut-off events. For 55272/55272 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 14748 event pairs, 398 based on Foata normal form. 12/2887 useless extension candidates. Maximal degree in co-relation 16533. Up to 2452 conditions per place. [2024-06-28 04:04:23,272 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 169 selfloop transitions, 42 changer transitions 0/215 dead transitions. [2024-06-28 04:04:23,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 215 transitions, 2422 flow [2024-06-28 04:04:23,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:04:23,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:04:23,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 04:04:23,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 04:04:23,274 INFO L175 Difference]: Start difference. First operand has 154 places, 186 transitions, 1930 flow. Second operand 8 states and 144 transitions. [2024-06-28 04:04:23,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 215 transitions, 2422 flow [2024-06-28 04:04:23,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 215 transitions, 2326 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 04:04:23,354 INFO L231 Difference]: Finished difference. Result has 155 places, 185 transitions, 1884 flow [2024-06-28 04:04:23,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1796, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1884, PETRI_PLACES=155, PETRI_TRANSITIONS=185} [2024-06-28 04:04:23,356 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 114 predicate places. [2024-06-28 04:04:23,356 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 185 transitions, 1884 flow [2024-06-28 04:04:23,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:23,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:23,356 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 04:04:23,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 04:04:23,356 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:23,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:23,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1222212041, now seen corresponding path program 1 times [2024-06-28 04:04:23,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:23,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427958473] [2024-06-28 04:04:23,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:23,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:24,132 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 04:04:24,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:24,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427958473] [2024-06-28 04:04:24,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427958473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:24,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:24,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:24,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170974002] [2024-06-28 04:04:24,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:24,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:24,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:24,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:24,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:24,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 04:04:24,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 185 transitions, 1884 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:24,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:24,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 04:04:24,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:24,639 INFO L124 PetriNetUnfolderBase]: 1775/2814 cut-off events. [2024-06-28 04:04:24,639 INFO L125 PetriNetUnfolderBase]: For 55865/55868 co-relation queries the response was YES. [2024-06-28 04:04:24,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16337 conditions, 2814 events. 1775/2814 cut-off events. For 55865/55868 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 14608 event pairs, 417 based on Foata normal form. 4/2814 useless extension candidates. Maximal degree in co-relation 16261. Up to 2560 conditions per place. [2024-06-28 04:04:24,660 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 164 selfloop transitions, 46 changer transitions 0/224 dead transitions. [2024-06-28 04:04:24,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 224 transitions, 2570 flow [2024-06-28 04:04:24,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:04:24,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:04:24,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 04:04:24,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-28 04:04:24,662 INFO L175 Difference]: Start difference. First operand has 155 places, 185 transitions, 1884 flow. Second operand 8 states and 145 transitions. [2024-06-28 04:04:24,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 224 transitions, 2570 flow [2024-06-28 04:04:24,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 224 transitions, 2459 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 04:04:24,758 INFO L231 Difference]: Finished difference. Result has 158 places, 203 transitions, 2078 flow [2024-06-28 04:04:24,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1773, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2078, PETRI_PLACES=158, PETRI_TRANSITIONS=203} [2024-06-28 04:04:24,759 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 117 predicate places. [2024-06-28 04:04:24,759 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 203 transitions, 2078 flow [2024-06-28 04:04:24,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:24,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:24,759 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 04:04:24,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 04:04:24,759 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:24,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:24,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1222302406, now seen corresponding path program 1 times [2024-06-28 04:04:24,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:24,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824442038] [2024-06-28 04:04:24,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:24,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:25,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:25,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:25,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824442038] [2024-06-28 04:04:25,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824442038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:25,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:25,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:25,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524363721] [2024-06-28 04:04:25,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:25,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:25,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:25,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:25,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:25,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:25,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 203 transitions, 2078 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:25,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:25,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:25,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:25,938 INFO L124 PetriNetUnfolderBase]: 1862/2914 cut-off events. [2024-06-28 04:04:25,938 INFO L125 PetriNetUnfolderBase]: For 60212/60212 co-relation queries the response was YES. [2024-06-28 04:04:25,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17221 conditions, 2914 events. 1862/2914 cut-off events. For 60212/60212 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 14962 event pairs, 434 based on Foata normal form. 2/2915 useless extension candidates. Maximal degree in co-relation 17143. Up to 2768 conditions per place. [2024-06-28 04:04:25,963 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 200 selfloop transitions, 35 changer transitions 0/239 dead transitions. [2024-06-28 04:04:25,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 239 transitions, 2825 flow [2024-06-28 04:04:25,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:04:25,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:04:25,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 04:04:25,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 04:04:25,969 INFO L175 Difference]: Start difference. First operand has 158 places, 203 transitions, 2078 flow. Second operand 8 states and 140 transitions. [2024-06-28 04:04:25,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 239 transitions, 2825 flow [2024-06-28 04:04:26,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 239 transitions, 2768 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-06-28 04:04:26,075 INFO L231 Difference]: Finished difference. Result has 166 places, 216 transitions, 2267 flow [2024-06-28 04:04:26,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2021, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2267, PETRI_PLACES=166, PETRI_TRANSITIONS=216} [2024-06-28 04:04:26,076 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 125 predicate places. [2024-06-28 04:04:26,076 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 216 transitions, 2267 flow [2024-06-28 04:04:26,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:26,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:26,076 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 04:04:26,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 04:04:26,076 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:26,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:26,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1696710343, now seen corresponding path program 2 times [2024-06-28 04:04:26,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:26,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431885337] [2024-06-28 04:04:26,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:26,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:26,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:26,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:26,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431885337] [2024-06-28 04:04:26,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431885337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:26,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:26,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:04:26,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738353581] [2024-06-28 04:04:26,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:26,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:04:26,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:26,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:04:26,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:04:26,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 04:04:26,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 216 transitions, 2267 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:26,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:26,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 04:04:26,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:27,486 INFO L124 PetriNetUnfolderBase]: 1811/2859 cut-off events. [2024-06-28 04:04:27,487 INFO L125 PetriNetUnfolderBase]: For 64011/64014 co-relation queries the response was YES. [2024-06-28 04:04:27,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17220 conditions, 2859 events. 1811/2859 cut-off events. For 64011/64014 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 14777 event pairs, 419 based on Foata normal form. 4/2859 useless extension candidates. Maximal degree in co-relation 17138. Up to 2625 conditions per place. [2024-06-28 04:04:27,510 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 170 selfloop transitions, 50 changer transitions 0/237 dead transitions. [2024-06-28 04:04:27,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 237 transitions, 2798 flow [2024-06-28 04:04:27,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:04:27,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:04:27,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 04:04:27,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41944444444444445 [2024-06-28 04:04:27,519 INFO L175 Difference]: Start difference. First operand has 166 places, 216 transitions, 2267 flow. Second operand 9 states and 151 transitions. [2024-06-28 04:04:27,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 237 transitions, 2798 flow [2024-06-28 04:04:27,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 237 transitions, 2738 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 04:04:27,614 INFO L231 Difference]: Finished difference. Result has 172 places, 220 transitions, 2359 flow [2024-06-28 04:04:27,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2207, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2359, PETRI_PLACES=172, PETRI_TRANSITIONS=220} [2024-06-28 04:04:27,615 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 131 predicate places. [2024-06-28 04:04:27,615 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 220 transitions, 2359 flow [2024-06-28 04:04:27,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:27,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:27,615 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 04:04:27,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 04:04:27,616 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:27,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:27,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1226021321, now seen corresponding path program 3 times [2024-06-28 04:04:27,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:27,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901179694] [2024-06-28 04:04:27,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:27,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:28,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:28,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:28,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901179694] [2024-06-28 04:04:28,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901179694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:28,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:28,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:28,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427548558] [2024-06-28 04:04:28,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:28,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:28,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:28,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:28,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:28,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 04:04:28,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 220 transitions, 2359 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:28,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:28,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 04:04:28,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:29,101 INFO L124 PetriNetUnfolderBase]: 1820/2874 cut-off events. [2024-06-28 04:04:29,101 INFO L125 PetriNetUnfolderBase]: For 68007/68010 co-relation queries the response was YES. [2024-06-28 04:04:29,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17536 conditions, 2874 events. 1820/2874 cut-off events. For 68007/68010 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 14867 event pairs, 417 based on Foata normal form. 4/2874 useless extension candidates. Maximal degree in co-relation 17452. Up to 2666 conditions per place. [2024-06-28 04:04:29,126 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 184 selfloop transitions, 38 changer transitions 0/239 dead transitions. [2024-06-28 04:04:29,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 239 transitions, 2901 flow [2024-06-28 04:04:29,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:04:29,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:04:29,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 04:04:29,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 04:04:29,128 INFO L175 Difference]: Start difference. First operand has 172 places, 220 transitions, 2359 flow. Second operand 8 states and 136 transitions. [2024-06-28 04:04:29,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 239 transitions, 2901 flow [2024-06-28 04:04:29,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 239 transitions, 2784 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 04:04:29,245 INFO L231 Difference]: Finished difference. Result has 175 places, 225 transitions, 2395 flow [2024-06-28 04:04:29,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2246, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2395, PETRI_PLACES=175, PETRI_TRANSITIONS=225} [2024-06-28 04:04:29,245 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 134 predicate places. [2024-06-28 04:04:29,246 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 225 transitions, 2395 flow [2024-06-28 04:04:29,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:29,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:29,246 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 04:04:29,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 04:04:29,246 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:29,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:29,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1700429568, now seen corresponding path program 2 times [2024-06-28 04:04:29,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:29,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474801074] [2024-06-28 04:04:29,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:29,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:29,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:29,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:29,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474801074] [2024-06-28 04:04:29,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474801074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:29,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:29,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:04:29,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816247063] [2024-06-28 04:04:29,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:29,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:04:29,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:29,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:04:29,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:04:29,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:29,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 225 transitions, 2395 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:29,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:29,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:29,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:30,580 INFO L124 PetriNetUnfolderBase]: 1908/2978 cut-off events. [2024-06-28 04:04:30,580 INFO L125 PetriNetUnfolderBase]: For 73367/73367 co-relation queries the response was YES. [2024-06-28 04:04:30,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18365 conditions, 2978 events. 1908/2978 cut-off events. For 73367/73367 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 15303 event pairs, 435 based on Foata normal form. 2/2979 useless extension candidates. Maximal degree in co-relation 18280. Up to 2859 conditions per place. [2024-06-28 04:04:30,605 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 216 selfloop transitions, 31 changer transitions 0/251 dead transitions. [2024-06-28 04:04:30,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 251 transitions, 3088 flow [2024-06-28 04:04:30,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:04:30,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:04:30,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 04:04:30,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-28 04:04:30,606 INFO L175 Difference]: Start difference. First operand has 175 places, 225 transitions, 2395 flow. Second operand 8 states and 138 transitions. [2024-06-28 04:04:30,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 251 transitions, 3088 flow [2024-06-28 04:04:30,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 251 transitions, 2996 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 04:04:30,715 INFO L231 Difference]: Finished difference. Result has 180 places, 232 transitions, 2459 flow [2024-06-28 04:04:30,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2304, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2459, PETRI_PLACES=180, PETRI_TRANSITIONS=232} [2024-06-28 04:04:30,716 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 139 predicate places. [2024-06-28 04:04:30,716 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 232 transitions, 2459 flow [2024-06-28 04:04:30,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:30,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:30,716 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 04:04:30,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 04:04:30,716 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:30,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:30,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1226027056, now seen corresponding path program 3 times [2024-06-28 04:04:30,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:30,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271926605] [2024-06-28 04:04:30,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:30,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:31,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:31,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:31,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271926605] [2024-06-28 04:04:31,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271926605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:31,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:31,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:04:31,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955377274] [2024-06-28 04:04:31,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:31,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:04:31,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:31,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:04:31,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:04:31,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:31,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 232 transitions, 2459 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:31,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:31,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:31,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:32,109 INFO L124 PetriNetUnfolderBase]: 1902/2972 cut-off events. [2024-06-28 04:04:32,109 INFO L125 PetriNetUnfolderBase]: For 76283/76283 co-relation queries the response was YES. [2024-06-28 04:04:32,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18403 conditions, 2972 events. 1902/2972 cut-off events. For 76283/76283 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 15298 event pairs, 435 based on Foata normal form. 2/2973 useless extension candidates. Maximal degree in co-relation 18316. Up to 2854 conditions per place. [2024-06-28 04:04:32,133 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 215 selfloop transitions, 35 changer transitions 0/254 dead transitions. [2024-06-28 04:04:32,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 254 transitions, 3047 flow [2024-06-28 04:04:32,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:04:32,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:04:32,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-28 04:04:32,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3886363636363636 [2024-06-28 04:04:32,139 INFO L175 Difference]: Start difference. First operand has 180 places, 232 transitions, 2459 flow. Second operand 11 states and 171 transitions. [2024-06-28 04:04:32,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 254 transitions, 3047 flow [2024-06-28 04:04:32,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 254 transitions, 2986 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 04:04:32,275 INFO L231 Difference]: Finished difference. Result has 187 places, 234 transitions, 2496 flow [2024-06-28 04:04:32,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2401, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2496, PETRI_PLACES=187, PETRI_TRANSITIONS=234} [2024-06-28 04:04:32,275 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 146 predicate places. [2024-06-28 04:04:32,276 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 234 transitions, 2496 flow [2024-06-28 04:04:32,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:32,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:32,276 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 04:04:32,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 04:04:32,276 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:32,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:32,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1509744210, now seen corresponding path program 4 times [2024-06-28 04:04:32,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:32,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420365045] [2024-06-28 04:04:32,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:32,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:32,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:32,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:32,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420365045] [2024-06-28 04:04:32,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420365045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:32,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:32,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:04:32,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435388213] [2024-06-28 04:04:32,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:32,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:04:32,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:32,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:04:32,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:04:33,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:33,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 234 transitions, 2496 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:33,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:33,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:33,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:33,646 INFO L124 PetriNetUnfolderBase]: 1928/3006 cut-off events. [2024-06-28 04:04:33,646 INFO L125 PetriNetUnfolderBase]: For 81614/81614 co-relation queries the response was YES. [2024-06-28 04:04:33,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18868 conditions, 3006 events. 1928/3006 cut-off events. For 81614/81614 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 15433 event pairs, 442 based on Foata normal form. 2/3007 useless extension candidates. Maximal degree in co-relation 18779. Up to 2876 conditions per place. [2024-06-28 04:04:33,671 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 225 selfloop transitions, 30 changer transitions 0/259 dead transitions. [2024-06-28 04:04:33,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 259 transitions, 3280 flow [2024-06-28 04:04:33,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:04:33,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:04:33,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-28 04:04:33,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-28 04:04:33,672 INFO L175 Difference]: Start difference. First operand has 187 places, 234 transitions, 2496 flow. Second operand 7 states and 125 transitions. [2024-06-28 04:04:33,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 259 transitions, 3280 flow [2024-06-28 04:04:33,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 259 transitions, 3216 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 04:04:33,813 INFO L231 Difference]: Finished difference. Result has 188 places, 241 transitions, 2597 flow [2024-06-28 04:04:33,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2432, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2597, PETRI_PLACES=188, PETRI_TRANSITIONS=241} [2024-06-28 04:04:33,814 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 147 predicate places. [2024-06-28 04:04:33,815 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 241 transitions, 2597 flow [2024-06-28 04:04:33,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:33,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:33,815 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 04:04:33,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 04:04:33,815 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:33,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:33,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1509738630, now seen corresponding path program 5 times [2024-06-28 04:04:33,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:33,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743740662] [2024-06-28 04:04:33,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:33,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:34,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:34,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:34,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743740662] [2024-06-28 04:04:34,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743740662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:34,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:34,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:34,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771817367] [2024-06-28 04:04:34,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:34,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:34,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:34,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:34,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:34,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:34,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 241 transitions, 2597 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:34,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:34,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:34,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:35,084 INFO L124 PetriNetUnfolderBase]: 1922/2998 cut-off events. [2024-06-28 04:04:35,084 INFO L125 PetriNetUnfolderBase]: For 85096/85096 co-relation queries the response was YES. [2024-06-28 04:04:35,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18948 conditions, 2998 events. 1922/2998 cut-off events. For 85096/85096 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 15394 event pairs, 438 based on Foata normal form. 2/2999 useless extension candidates. Maximal degree in co-relation 18856. Up to 2871 conditions per place. [2024-06-28 04:04:35,111 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 225 selfloop transitions, 32 changer transitions 0/261 dead transitions. [2024-06-28 04:04:35,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 261 transitions, 3247 flow [2024-06-28 04:04:35,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:04:35,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:04:35,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-28 04:04:35,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45357142857142857 [2024-06-28 04:04:35,112 INFO L175 Difference]: Start difference. First operand has 188 places, 241 transitions, 2597 flow. Second operand 7 states and 127 transitions. [2024-06-28 04:04:35,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 261 transitions, 3247 flow [2024-06-28 04:04:35,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 261 transitions, 3176 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 04:04:35,250 INFO L231 Difference]: Finished difference. Result has 192 places, 241 transitions, 2596 flow [2024-06-28 04:04:35,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2526, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2596, PETRI_PLACES=192, PETRI_TRANSITIONS=241} [2024-06-28 04:04:35,251 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 151 predicate places. [2024-06-28 04:04:35,251 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 241 transitions, 2596 flow [2024-06-28 04:04:35,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:35,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:35,251 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 04:04:35,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 04:04:35,251 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:35,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:35,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1399245925, now seen corresponding path program 4 times [2024-06-28 04:04:35,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:35,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607508863] [2024-06-28 04:04:35,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:35,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:35,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:35,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:35,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607508863] [2024-06-28 04:04:35,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607508863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:35,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:35,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:35,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475807931] [2024-06-28 04:04:35,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:35,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:35,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:35,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:35,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:36,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 04:04:36,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 241 transitions, 2596 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:36,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:36,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 04:04:36,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:36,586 INFO L124 PetriNetUnfolderBase]: 1855/2923 cut-off events. [2024-06-28 04:04:36,586 INFO L125 PetriNetUnfolderBase]: For 87642/87645 co-relation queries the response was YES. [2024-06-28 04:04:36,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18414 conditions, 2923 events. 1855/2923 cut-off events. For 87642/87645 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 15106 event pairs, 425 based on Foata normal form. 4/2923 useless extension candidates. Maximal degree in co-relation 18321. Up to 2670 conditions per place. [2024-06-28 04:04:36,613 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 195 selfloop transitions, 42 changer transitions 0/260 dead transitions. [2024-06-28 04:04:36,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 260 transitions, 3130 flow [2024-06-28 04:04:36,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:04:36,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:04:36,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-28 04:04:36,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-28 04:04:36,614 INFO L175 Difference]: Start difference. First operand has 192 places, 241 transitions, 2596 flow. Second operand 7 states and 130 transitions. [2024-06-28 04:04:36,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 260 transitions, 3130 flow [2024-06-28 04:04:36,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 260 transitions, 3007 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 04:04:36,881 INFO L231 Difference]: Finished difference. Result has 193 places, 241 transitions, 2569 flow [2024-06-28 04:04:36,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2473, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2569, PETRI_PLACES=193, PETRI_TRANSITIONS=241} [2024-06-28 04:04:36,881 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 152 predicate places. [2024-06-28 04:04:36,881 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 241 transitions, 2569 flow [2024-06-28 04:04:36,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:36,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:36,882 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 04:04:36,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 04:04:36,882 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:36,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:36,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1517095860, now seen corresponding path program 6 times [2024-06-28 04:04:36,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:36,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361764563] [2024-06-28 04:04:36,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:36,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:37,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:37,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:37,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361764563] [2024-06-28 04:04:37,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361764563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:37,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:37,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:37,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455876470] [2024-06-28 04:04:37,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:37,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:37,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:37,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:37,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:37,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:37,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 241 transitions, 2569 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:37,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:37,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:37,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:38,099 INFO L124 PetriNetUnfolderBase]: 1910/2980 cut-off events. [2024-06-28 04:04:38,100 INFO L125 PetriNetUnfolderBase]: For 91366/91366 co-relation queries the response was YES. [2024-06-28 04:04:38,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18841 conditions, 2980 events. 1910/2980 cut-off events. For 91366/91366 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 15271 event pairs, 439 based on Foata normal form. 2/2981 useless extension candidates. Maximal degree in co-relation 18748. Up to 2902 conditions per place. [2024-06-28 04:04:38,126 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 234 selfloop transitions, 16 changer transitions 0/254 dead transitions. [2024-06-28 04:04:38,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 254 transitions, 3120 flow [2024-06-28 04:04:38,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:04:38,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:04:38,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-28 04:04:38,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40714285714285714 [2024-06-28 04:04:38,127 INFO L175 Difference]: Start difference. First operand has 193 places, 241 transitions, 2569 flow. Second operand 7 states and 114 transitions. [2024-06-28 04:04:38,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 254 transitions, 3120 flow [2024-06-28 04:04:38,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 254 transitions, 2984 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 04:04:38,294 INFO L231 Difference]: Finished difference. Result has 193 places, 242 transitions, 2482 flow [2024-06-28 04:04:38,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2435, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2482, PETRI_PLACES=193, PETRI_TRANSITIONS=242} [2024-06-28 04:04:38,294 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 152 predicate places. [2024-06-28 04:04:38,294 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 242 transitions, 2482 flow [2024-06-28 04:04:38,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:38,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:38,295 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 04:04:38,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 04:04:38,295 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:38,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:38,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1517362987, now seen corresponding path program 1 times [2024-06-28 04:04:38,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:38,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061460183] [2024-06-28 04:04:38,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:38,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:38,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:39,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:39,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:39,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061460183] [2024-06-28 04:04:39,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061460183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:39,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:39,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:39,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192147643] [2024-06-28 04:04:39,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:39,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:39,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:39,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:39,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:39,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:39,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 242 transitions, 2482 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:39,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:39,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:39,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:39,572 INFO L124 PetriNetUnfolderBase]: 1907/2980 cut-off events. [2024-06-28 04:04:39,572 INFO L125 PetriNetUnfolderBase]: For 94361/94361 co-relation queries the response was YES. [2024-06-28 04:04:39,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18773 conditions, 2980 events. 1907/2980 cut-off events. For 94361/94361 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 15342 event pairs, 436 based on Foata normal form. 1/2980 useless extension candidates. Maximal degree in co-relation 18680. Up to 2900 conditions per place. [2024-06-28 04:04:39,598 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 233 selfloop transitions, 18 changer transitions 0/255 dead transitions. [2024-06-28 04:04:39,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 255 transitions, 3050 flow [2024-06-28 04:04:39,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:04:39,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:04:39,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-28 04:04:39,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42083333333333334 [2024-06-28 04:04:39,600 INFO L175 Difference]: Start difference. First operand has 193 places, 242 transitions, 2482 flow. Second operand 6 states and 101 transitions. [2024-06-28 04:04:39,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 255 transitions, 3050 flow [2024-06-28 04:04:39,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 255 transitions, 3018 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 04:04:39,779 INFO L231 Difference]: Finished difference. Result has 194 places, 245 transitions, 2532 flow [2024-06-28 04:04:39,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2450, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2532, PETRI_PLACES=194, PETRI_TRANSITIONS=245} [2024-06-28 04:04:39,779 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 153 predicate places. [2024-06-28 04:04:39,779 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 245 transitions, 2532 flow [2024-06-28 04:04:39,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:39,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:39,780 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 04:04:39,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 04:04:39,780 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:39,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:39,780 INFO L85 PathProgramCache]: Analyzing trace with hash 572748831, now seen corresponding path program 1 times [2024-06-28 04:04:39,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:39,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878915132] [2024-06-28 04:04:39,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:39,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:40,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:40,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:40,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878915132] [2024-06-28 04:04:40,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878915132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:40,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:40,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:40,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286340376] [2024-06-28 04:04:40,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:40,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:40,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:40,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:40,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:40,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:40,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 245 transitions, 2532 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:40,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:40,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:40,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:41,252 INFO L124 PetriNetUnfolderBase]: 2001/3123 cut-off events. [2024-06-28 04:04:41,252 INFO L125 PetriNetUnfolderBase]: For 104939/104943 co-relation queries the response was YES. [2024-06-28 04:04:41,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20138 conditions, 3123 events. 2001/3123 cut-off events. For 104939/104943 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 16211 event pairs, 429 based on Foata normal form. 8/3130 useless extension candidates. Maximal degree in co-relation 20044. Up to 2897 conditions per place. [2024-06-28 04:04:41,279 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 230 selfloop transitions, 57 changer transitions 0/291 dead transitions. [2024-06-28 04:04:41,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 291 transitions, 3581 flow [2024-06-28 04:04:41,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:04:41,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:04:41,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 04:04:41,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.440625 [2024-06-28 04:04:41,281 INFO L175 Difference]: Start difference. First operand has 194 places, 245 transitions, 2532 flow. Second operand 8 states and 141 transitions. [2024-06-28 04:04:41,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 291 transitions, 3581 flow [2024-06-28 04:04:41,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 291 transitions, 3539 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 04:04:41,495 INFO L231 Difference]: Finished difference. Result has 201 places, 267 transitions, 2989 flow [2024-06-28 04:04:41,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2490, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2989, PETRI_PLACES=201, PETRI_TRANSITIONS=267} [2024-06-28 04:04:41,496 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 160 predicate places. [2024-06-28 04:04:41,496 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 267 transitions, 2989 flow [2024-06-28 04:04:41,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:41,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:41,496 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 04:04:41,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 04:04:41,496 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:41,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:41,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1450165195, now seen corresponding path program 2 times [2024-06-28 04:04:41,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:41,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045315887] [2024-06-28 04:04:41,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:41,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:41,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:42,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:42,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:42,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045315887] [2024-06-28 04:04:42,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045315887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:42,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:42,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:42,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612382480] [2024-06-28 04:04:42,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:42,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:42,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:42,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:42,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:42,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:42,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 267 transitions, 2989 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:42,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:42,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:42,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:42,866 INFO L124 PetriNetUnfolderBase]: 2021/3158 cut-off events. [2024-06-28 04:04:42,867 INFO L125 PetriNetUnfolderBase]: For 112905/112909 co-relation queries the response was YES. [2024-06-28 04:04:42,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21238 conditions, 3158 events. 2021/3158 cut-off events. For 112905/112909 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 16437 event pairs, 429 based on Foata normal form. 8/3165 useless extension candidates. Maximal degree in co-relation 21140. Up to 2913 conditions per place. [2024-06-28 04:04:42,897 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 229 selfloop transitions, 60 changer transitions 0/293 dead transitions. [2024-06-28 04:04:42,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 293 transitions, 3814 flow [2024-06-28 04:04:42,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:04:42,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:04:42,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-28 04:04:42,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 04:04:42,898 INFO L175 Difference]: Start difference. First operand has 201 places, 267 transitions, 2989 flow. Second operand 7 states and 126 transitions. [2024-06-28 04:04:42,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 293 transitions, 3814 flow [2024-06-28 04:04:43,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 293 transitions, 3755 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-06-28 04:04:43,129 INFO L231 Difference]: Finished difference. Result has 207 places, 272 transitions, 3182 flow [2024-06-28 04:04:43,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2930, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3182, PETRI_PLACES=207, PETRI_TRANSITIONS=272} [2024-06-28 04:04:43,130 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 166 predicate places. [2024-06-28 04:04:43,130 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 272 transitions, 3182 flow [2024-06-28 04:04:43,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:43,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:43,130 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 04:04:43,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 04:04:43,130 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:43,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:43,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1830088293, now seen corresponding path program 3 times [2024-06-28 04:04:43,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:43,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581509480] [2024-06-28 04:04:43,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:43,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:43,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:43,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:43,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581509480] [2024-06-28 04:04:43,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581509480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:43,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:43,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:43,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595644571] [2024-06-28 04:04:43,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:43,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:43,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:43,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:43,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:43,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:43,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 272 transitions, 3182 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:43,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:43,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:43,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:44,322 INFO L124 PetriNetUnfolderBase]: 2009/3142 cut-off events. [2024-06-28 04:04:44,323 INFO L125 PetriNetUnfolderBase]: For 115399/115403 co-relation queries the response was YES. [2024-06-28 04:04:44,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21344 conditions, 3142 events. 2009/3142 cut-off events. For 115399/115403 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 16377 event pairs, 431 based on Foata normal form. 8/3149 useless extension candidates. Maximal degree in co-relation 21243. Up to 3003 conditions per place. [2024-06-28 04:04:44,355 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 251 selfloop transitions, 28 changer transitions 0/283 dead transitions. [2024-06-28 04:04:44,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 283 transitions, 3784 flow [2024-06-28 04:04:44,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:04:44,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:04:44,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-28 04:04:44,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 04:04:44,357 INFO L175 Difference]: Start difference. First operand has 207 places, 272 transitions, 3182 flow. Second operand 6 states and 104 transitions. [2024-06-28 04:04:44,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 283 transitions, 3784 flow [2024-06-28 04:04:44,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 283 transitions, 3641 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 04:04:44,661 INFO L231 Difference]: Finished difference. Result has 207 places, 272 transitions, 3105 flow [2024-06-28 04:04:44,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3039, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3105, PETRI_PLACES=207, PETRI_TRANSITIONS=272} [2024-06-28 04:04:44,661 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 166 predicate places. [2024-06-28 04:04:44,661 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 272 transitions, 3105 flow [2024-06-28 04:04:44,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:44,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:44,662 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 04:04:44,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 04:04:44,662 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:44,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:44,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1830079365, now seen corresponding path program 1 times [2024-06-28 04:04:44,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:44,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207344013] [2024-06-28 04:04:44,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:44,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:44,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:45,542 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 04:04:45,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:45,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207344013] [2024-06-28 04:04:45,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207344013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:45,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:45,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:04:45,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182370149] [2024-06-28 04:04:45,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:45,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:04:45,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:45,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:04:45,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:04:45,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:45,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 272 transitions, 3105 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:45,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:45,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:45,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:46,280 INFO L124 PetriNetUnfolderBase]: 2053/3208 cut-off events. [2024-06-28 04:04:46,281 INFO L125 PetriNetUnfolderBase]: For 116487/116487 co-relation queries the response was YES. [2024-06-28 04:04:46,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21336 conditions, 3208 events. 2053/3208 cut-off events. For 116487/116487 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 16765 event pairs, 454 based on Foata normal form. 12/3219 useless extension candidates. Maximal degree in co-relation 21236. Up to 2969 conditions per place. [2024-06-28 04:04:46,311 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 247 selfloop transitions, 38 changer transitions 0/289 dead transitions. [2024-06-28 04:04:46,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 289 transitions, 3779 flow [2024-06-28 04:04:46,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:04:46,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:04:46,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-28 04:04:46,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45416666666666666 [2024-06-28 04:04:46,313 INFO L175 Difference]: Start difference. First operand has 207 places, 272 transitions, 3105 flow. Second operand 6 states and 109 transitions. [2024-06-28 04:04:46,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 289 transitions, 3779 flow [2024-06-28 04:04:46,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 289 transitions, 3725 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 04:04:46,605 INFO L231 Difference]: Finished difference. Result has 209 places, 273 transitions, 3149 flow [2024-06-28 04:04:46,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3051, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3149, PETRI_PLACES=209, PETRI_TRANSITIONS=273} [2024-06-28 04:04:46,605 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 168 predicate places. [2024-06-28 04:04:46,605 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 273 transitions, 3149 flow [2024-06-28 04:04:46,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:46,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:46,606 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 04:04:46,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 04:04:46,606 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:46,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:46,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1161495265, now seen corresponding path program 4 times [2024-06-28 04:04:46,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:46,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207701467] [2024-06-28 04:04:46,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:46,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:47,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:47,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:47,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207701467] [2024-06-28 04:04:47,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207701467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:47,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:47,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:47,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433565570] [2024-06-28 04:04:47,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:47,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:47,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:47,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:47,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:47,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:47,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 273 transitions, 3149 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:47,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:47,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:47,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:48,079 INFO L124 PetriNetUnfolderBase]: 2115/3306 cut-off events. [2024-06-28 04:04:48,079 INFO L125 PetriNetUnfolderBase]: For 119812/119816 co-relation queries the response was YES. [2024-06-28 04:04:48,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22309 conditions, 3306 events. 2115/3306 cut-off events. For 119812/119816 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 17375 event pairs, 451 based on Foata normal form. 8/3313 useless extension candidates. Maximal degree in co-relation 22208. Up to 3049 conditions per place. [2024-06-28 04:04:48,113 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 245 selfloop transitions, 62 changer transitions 0/311 dead transitions. [2024-06-28 04:04:48,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 311 transitions, 4117 flow [2024-06-28 04:04:48,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:04:48,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:04:48,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 04:04:48,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 04:04:48,115 INFO L175 Difference]: Start difference. First operand has 209 places, 273 transitions, 3149 flow. Second operand 9 states and 156 transitions. [2024-06-28 04:04:48,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 311 transitions, 4117 flow [2024-06-28 04:04:48,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 311 transitions, 4045 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-28 04:04:48,387 INFO L231 Difference]: Finished difference. Result has 214 places, 284 transitions, 3374 flow [2024-06-28 04:04:48,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3077, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3374, PETRI_PLACES=214, PETRI_TRANSITIONS=284} [2024-06-28 04:04:48,388 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 173 predicate places. [2024-06-28 04:04:48,388 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 284 transitions, 3374 flow [2024-06-28 04:04:48,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:48,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:48,388 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 04:04:48,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 04:04:48,388 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:48,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:48,389 INFO L85 PathProgramCache]: Analyzing trace with hash 276823463, now seen corresponding path program 5 times [2024-06-28 04:04:48,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:48,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717044785] [2024-06-28 04:04:48,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:48,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:48,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:48,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:48,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717044785] [2024-06-28 04:04:48,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717044785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:48,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:48,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:48,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541167271] [2024-06-28 04:04:48,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:48,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:48,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:48,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:48,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:49,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:49,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 284 transitions, 3374 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:49,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:49,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:49,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:49,611 INFO L124 PetriNetUnfolderBase]: 2191/3411 cut-off events. [2024-06-28 04:04:49,611 INFO L125 PetriNetUnfolderBase]: For 134223/134227 co-relation queries the response was YES. [2024-06-28 04:04:49,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23802 conditions, 3411 events. 2191/3411 cut-off events. For 134223/134227 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 17946 event pairs, 454 based on Foata normal form. 8/3418 useless extension candidates. Maximal degree in co-relation 23700. Up to 3013 conditions per place. [2024-06-28 04:04:49,645 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 226 selfloop transitions, 88 changer transitions 0/318 dead transitions. [2024-06-28 04:04:49,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 318 transitions, 4442 flow [2024-06-28 04:04:49,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:04:49,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:04:49,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 04:04:49,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 04:04:49,647 INFO L175 Difference]: Start difference. First operand has 214 places, 284 transitions, 3374 flow. Second operand 8 states and 144 transitions. [2024-06-28 04:04:49,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 318 transitions, 4442 flow [2024-06-28 04:04:49,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 318 transitions, 4190 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-06-28 04:04:49,906 INFO L231 Difference]: Finished difference. Result has 217 places, 296 transitions, 3518 flow [2024-06-28 04:04:49,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3136, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3518, PETRI_PLACES=217, PETRI_TRANSITIONS=296} [2024-06-28 04:04:49,906 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 176 predicate places. [2024-06-28 04:04:49,907 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 296 transitions, 3518 flow [2024-06-28 04:04:49,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:49,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:49,907 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 04:04:49,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 04:04:49,907 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:49,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:49,907 INFO L85 PathProgramCache]: Analyzing trace with hash -648289249, now seen corresponding path program 6 times [2024-06-28 04:04:49,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:49,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803774696] [2024-06-28 04:04:49,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:49,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:50,661 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 04:04:50,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:50,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803774696] [2024-06-28 04:04:50,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803774696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:50,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:50,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:50,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040636004] [2024-06-28 04:04:50,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:50,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:50,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:50,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:50,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:50,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:50,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 296 transitions, 3518 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:50,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:50,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:50,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:51,440 INFO L124 PetriNetUnfolderBase]: 2179/3397 cut-off events. [2024-06-28 04:04:51,441 INFO L125 PetriNetUnfolderBase]: For 138006/138010 co-relation queries the response was YES. [2024-06-28 04:04:51,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24076 conditions, 3397 events. 2179/3397 cut-off events. For 138006/138010 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 17916 event pairs, 461 based on Foata normal form. 8/3404 useless extension candidates. Maximal degree in co-relation 23974. Up to 3166 conditions per place. [2024-06-28 04:04:51,474 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 246 selfloop transitions, 63 changer transitions 0/313 dead transitions. [2024-06-28 04:04:51,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 313 transitions, 4203 flow [2024-06-28 04:04:51,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:04:51,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:04:51,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 04:04:51,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-28 04:04:51,475 INFO L175 Difference]: Start difference. First operand has 217 places, 296 transitions, 3518 flow. Second operand 9 states and 148 transitions. [2024-06-28 04:04:51,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 313 transitions, 4203 flow [2024-06-28 04:04:51,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 313 transitions, 4083 flow, removed 46 selfloop flow, removed 3 redundant places. [2024-06-28 04:04:51,792 INFO L231 Difference]: Finished difference. Result has 223 places, 296 transitions, 3531 flow [2024-06-28 04:04:51,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3398, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3531, PETRI_PLACES=223, PETRI_TRANSITIONS=296} [2024-06-28 04:04:51,792 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 182 predicate places. [2024-06-28 04:04:51,792 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 296 transitions, 3531 flow [2024-06-28 04:04:51,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:51,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:51,793 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 04:04:51,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 04:04:51,793 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:51,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:51,794 INFO L85 PathProgramCache]: Analyzing trace with hash 2133036877, now seen corresponding path program 7 times [2024-06-28 04:04:51,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:51,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229126380] [2024-06-28 04:04:51,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:51,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:52,474 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 04:04:52,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:52,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229126380] [2024-06-28 04:04:52,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229126380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:52,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:52,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:52,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12091215] [2024-06-28 04:04:52,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:52,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:52,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:52,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:52,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:52,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:52,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 296 transitions, 3531 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:52,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:52,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:52,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:53,224 INFO L124 PetriNetUnfolderBase]: 2167/3377 cut-off events. [2024-06-28 04:04:53,224 INFO L125 PetriNetUnfolderBase]: For 131017/131021 co-relation queries the response was YES. [2024-06-28 04:04:53,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23262 conditions, 3377 events. 2167/3377 cut-off events. For 131017/131021 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 17777 event pairs, 455 based on Foata normal form. 8/3384 useless extension candidates. Maximal degree in co-relation 23158. Up to 3118 conditions per place. [2024-06-28 04:04:53,261 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 250 selfloop transitions, 63 changer transitions 0/317 dead transitions. [2024-06-28 04:04:53,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 317 transitions, 4248 flow [2024-06-28 04:04:53,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:04:53,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:04:53,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-28 04:04:53,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 04:04:53,262 INFO L175 Difference]: Start difference. First operand has 223 places, 296 transitions, 3531 flow. Second operand 7 states and 126 transitions. [2024-06-28 04:04:53,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 317 transitions, 4248 flow [2024-06-28 04:04:53,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 317 transitions, 4064 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 04:04:53,606 INFO L231 Difference]: Finished difference. Result has 222 places, 296 transitions, 3490 flow [2024-06-28 04:04:53,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3347, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3490, PETRI_PLACES=222, PETRI_TRANSITIONS=296} [2024-06-28 04:04:53,607 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 181 predicate places. [2024-06-28 04:04:53,607 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 296 transitions, 3490 flow [2024-06-28 04:04:53,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:53,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:53,607 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 04:04:53,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 04:04:53,607 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:53,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:53,608 INFO L85 PathProgramCache]: Analyzing trace with hash -220389127, now seen corresponding path program 8 times [2024-06-28 04:04:53,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:53,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629824063] [2024-06-28 04:04:53,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:53,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:54,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:54,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:54,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629824063] [2024-06-28 04:04:54,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629824063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:54,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:54,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:54,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427897327] [2024-06-28 04:04:54,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:54,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:54,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:54,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:54,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:54,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:54,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 296 transitions, 3490 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:54,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:54,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:54,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:54,886 INFO L124 PetriNetUnfolderBase]: 2187/3409 cut-off events. [2024-06-28 04:04:54,887 INFO L125 PetriNetUnfolderBase]: For 136717/136721 co-relation queries the response was YES. [2024-06-28 04:04:54,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23608 conditions, 3409 events. 2187/3409 cut-off events. For 136717/136721 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 17977 event pairs, 459 based on Foata normal form. 8/3416 useless extension candidates. Maximal degree in co-relation 23503. Up to 3261 conditions per place. [2024-06-28 04:04:54,921 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 279 selfloop transitions, 28 changer transitions 0/311 dead transitions. [2024-06-28 04:04:54,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 311 transitions, 4214 flow [2024-06-28 04:04:54,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:04:54,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:04:54,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-28 04:04:54,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-06-28 04:04:54,922 INFO L175 Difference]: Start difference. First operand has 222 places, 296 transitions, 3490 flow. Second operand 7 states and 116 transitions. [2024-06-28 04:04:54,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 311 transitions, 4214 flow [2024-06-28 04:04:55,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 311 transitions, 4100 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 04:04:55,179 INFO L231 Difference]: Finished difference. Result has 222 places, 299 transitions, 3504 flow [2024-06-28 04:04:55,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3376, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3504, PETRI_PLACES=222, PETRI_TRANSITIONS=299} [2024-06-28 04:04:55,180 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 181 predicate places. [2024-06-28 04:04:55,180 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 299 transitions, 3504 flow [2024-06-28 04:04:55,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:55,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:55,180 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 04:04:55,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 04:04:55,180 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:55,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:55,181 INFO L85 PathProgramCache]: Analyzing trace with hash -442576357, now seen corresponding path program 9 times [2024-06-28 04:04:55,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:55,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747826087] [2024-06-28 04:04:55,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:55,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:55,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:55,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:55,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:55,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747826087] [2024-06-28 04:04:55,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747826087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:55,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:55,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:55,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794784959] [2024-06-28 04:04:55,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:55,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:55,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:55,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:55,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:55,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:55,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 299 transitions, 3504 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:55,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:55,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:55,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:56,429 INFO L124 PetriNetUnfolderBase]: 2207/3441 cut-off events. [2024-06-28 04:04:56,430 INFO L125 PetriNetUnfolderBase]: For 131860/131864 co-relation queries the response was YES. [2024-06-28 04:04:56,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23640 conditions, 3441 events. 2207/3441 cut-off events. For 131860/131864 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 18199 event pairs, 446 based on Foata normal form. 8/3448 useless extension candidates. Maximal degree in co-relation 23536. Up to 3029 conditions per place. [2024-06-28 04:04:56,463 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 223 selfloop transitions, 95 changer transitions 0/322 dead transitions. [2024-06-28 04:04:56,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 322 transitions, 4392 flow [2024-06-28 04:04:56,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:04:56,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:04:56,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 04:04:56,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-28 04:04:56,465 INFO L175 Difference]: Start difference. First operand has 222 places, 299 transitions, 3504 flow. Second operand 7 states and 128 transitions. [2024-06-28 04:04:56,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 322 transitions, 4392 flow [2024-06-28 04:04:56,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 322 transitions, 4266 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 04:04:56,757 INFO L231 Difference]: Finished difference. Result has 224 places, 302 transitions, 3644 flow [2024-06-28 04:04:56,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3378, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3644, PETRI_PLACES=224, PETRI_TRANSITIONS=302} [2024-06-28 04:04:56,757 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 183 predicate places. [2024-06-28 04:04:56,757 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 302 transitions, 3644 flow [2024-06-28 04:04:56,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:56,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:56,763 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 04:04:56,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 04:04:56,763 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:56,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:56,764 INFO L85 PathProgramCache]: Analyzing trace with hash -214675207, now seen corresponding path program 10 times [2024-06-28 04:04:56,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:56,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409353859] [2024-06-28 04:04:56,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:56,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:57,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:57,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:57,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409353859] [2024-06-28 04:04:57,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409353859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:57,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:57,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:57,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723552891] [2024-06-28 04:04:57,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:57,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:57,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:57,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:57,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:57,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:57,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 302 transitions, 3644 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:57,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:57,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:57,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:58,062 INFO L124 PetriNetUnfolderBase]: 2195/3425 cut-off events. [2024-06-28 04:04:58,062 INFO L125 PetriNetUnfolderBase]: For 133747/133751 co-relation queries the response was YES. [2024-06-28 04:04:58,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23627 conditions, 3425 events. 2195/3425 cut-off events. For 133747/133751 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 18125 event pairs, 453 based on Foata normal form. 8/3432 useless extension candidates. Maximal degree in co-relation 23523. Up to 3237 conditions per place. [2024-06-28 04:04:58,101 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 276 selfloop transitions, 36 changer transitions 0/316 dead transitions. [2024-06-28 04:04:58,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 316 transitions, 4338 flow [2024-06-28 04:04:58,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:04:58,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:04:58,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-28 04:04:58,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 04:04:58,102 INFO L175 Difference]: Start difference. First operand has 224 places, 302 transitions, 3644 flow. Second operand 7 states and 119 transitions. [2024-06-28 04:04:58,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 316 transitions, 4338 flow [2024-06-28 04:04:58,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 316 transitions, 4132 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-28 04:04:58,405 INFO L231 Difference]: Finished difference. Result has 226 places, 302 transitions, 3516 flow [2024-06-28 04:04:58,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3438, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3516, PETRI_PLACES=226, PETRI_TRANSITIONS=302} [2024-06-28 04:04:58,405 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 185 predicate places. [2024-06-28 04:04:58,406 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 302 transitions, 3516 flow [2024-06-28 04:04:58,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:58,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:58,406 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 04:04:58,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 04:04:58,408 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:58,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:58,408 INFO L85 PathProgramCache]: Analyzing trace with hash -206570629, now seen corresponding path program 2 times [2024-06-28 04:04:58,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:58,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74231323] [2024-06-28 04:04:58,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:58,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:59,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:59,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:59,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74231323] [2024-06-28 04:04:59,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74231323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:59,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:59,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:04:59,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208280741] [2024-06-28 04:04:59,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:59,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:04:59,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:59,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:04:59,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:04:59,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:04:59,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 302 transitions, 3516 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:59,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:59,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:04:59,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:00,109 INFO L124 PetriNetUnfolderBase]: 2239/3495 cut-off events. [2024-06-28 04:05:00,110 INFO L125 PetriNetUnfolderBase]: For 140169/140169 co-relation queries the response was YES. [2024-06-28 04:05:00,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23633 conditions, 3495 events. 2239/3495 cut-off events. For 140169/140169 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 18572 event pairs, 472 based on Foata normal form. 12/3506 useless extension candidates. Maximal degree in co-relation 23529. Up to 3226 conditions per place. [2024-06-28 04:05:00,145 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 278 selfloop transitions, 40 changer transitions 0/322 dead transitions. [2024-06-28 04:05:00,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 322 transitions, 4288 flow [2024-06-28 04:05:00,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:05:00,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:05:00,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 04:05:00,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392857142857143 [2024-06-28 04:05:00,146 INFO L175 Difference]: Start difference. First operand has 226 places, 302 transitions, 3516 flow. Second operand 7 states and 123 transitions. [2024-06-28 04:05:00,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 322 transitions, 4288 flow [2024-06-28 04:05:00,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 322 transitions, 4040 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 04:05:00,476 INFO L231 Difference]: Finished difference. Result has 225 places, 303 transitions, 3369 flow [2024-06-28 04:05:00,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3268, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3369, PETRI_PLACES=225, PETRI_TRANSITIONS=303} [2024-06-28 04:05:00,477 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 184 predicate places. [2024-06-28 04:05:00,477 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 303 transitions, 3369 flow [2024-06-28 04:05:00,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:00,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:00,478 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 04:05:00,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 04:05:00,478 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:00,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:00,478 INFO L85 PathProgramCache]: Analyzing trace with hash -206095399, now seen corresponding path program 3 times [2024-06-28 04:05:00,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:00,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127473557] [2024-06-28 04:05:00,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:00,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:01,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:01,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:01,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127473557] [2024-06-28 04:05:01,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127473557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:01,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:01,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:05:01,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006521206] [2024-06-28 04:05:01,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:01,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:05:01,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:01,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:05:01,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:05:01,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:05:01,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 303 transitions, 3369 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:01,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:01,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:05:01,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:02,039 INFO L124 PetriNetUnfolderBase]: 2241/3503 cut-off events. [2024-06-28 04:05:02,039 INFO L125 PetriNetUnfolderBase]: For 137459/137459 co-relation queries the response was YES. [2024-06-28 04:05:02,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23264 conditions, 3503 events. 2241/3503 cut-off events. For 137459/137459 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 18601 event pairs, 462 based on Foata normal form. 8/3510 useless extension candidates. Maximal degree in co-relation 23161. Up to 3142 conditions per place. [2024-06-28 04:05:02,070 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 279 selfloop transitions, 42 changer transitions 0/325 dead transitions. [2024-06-28 04:05:02,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 325 transitions, 4165 flow [2024-06-28 04:05:02,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:05:02,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:05:02,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-28 04:05:02,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-06-28 04:05:02,071 INFO L175 Difference]: Start difference. First operand has 225 places, 303 transitions, 3369 flow. Second operand 7 states and 124 transitions. [2024-06-28 04:05:02,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 325 transitions, 4165 flow [2024-06-28 04:05:02,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 325 transitions, 4082 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 04:05:02,342 INFO L231 Difference]: Finished difference. Result has 227 places, 304 transitions, 3392 flow [2024-06-28 04:05:02,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3286, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3392, PETRI_PLACES=227, PETRI_TRANSITIONS=304} [2024-06-28 04:05:02,343 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 186 predicate places. [2024-06-28 04:05:02,343 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 304 transitions, 3392 flow [2024-06-28 04:05:02,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:02,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:02,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:02,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 04:05:02,344 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:02,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:02,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1055557477, now seen corresponding path program 1 times [2024-06-28 04:05:02,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:02,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492871750] [2024-06-28 04:05:02,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:02,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:03,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:03,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:03,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492871750] [2024-06-28 04:05:03,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492871750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:03,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:03,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:05:03,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491484769] [2024-06-28 04:05:03,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:03,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:05:03,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:03,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:05:03,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:05:03,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 04:05:03,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 304 transitions, 3392 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:03,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:03,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 04:05:03,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:04,041 INFO L124 PetriNetUnfolderBase]: 2177/3424 cut-off events. [2024-06-28 04:05:04,041 INFO L125 PetriNetUnfolderBase]: For 139379/139412 co-relation queries the response was YES. [2024-06-28 04:05:04,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22914 conditions, 3424 events. 2177/3424 cut-off events. For 139379/139412 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 18333 event pairs, 404 based on Foata normal form. 6/3410 useless extension candidates. Maximal degree in co-relation 22810. Up to 3011 conditions per place. [2024-06-28 04:05:04,075 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 236 selfloop transitions, 74 changer transitions 0/335 dead transitions. [2024-06-28 04:05:04,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 335 transitions, 4238 flow [2024-06-28 04:05:04,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:05:04,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:05:04,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 04:05:04,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527777777777778 [2024-06-28 04:05:04,077 INFO L175 Difference]: Start difference. First operand has 227 places, 304 transitions, 3392 flow. Second operand 9 states and 163 transitions. [2024-06-28 04:05:04,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 335 transitions, 4238 flow [2024-06-28 04:05:04,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 335 transitions, 4148 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 04:05:04,330 INFO L231 Difference]: Finished difference. Result has 231 places, 308 transitions, 3515 flow [2024-06-28 04:05:04,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3302, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3515, PETRI_PLACES=231, PETRI_TRANSITIONS=308} [2024-06-28 04:05:04,331 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 190 predicate places. [2024-06-28 04:05:04,331 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 308 transitions, 3515 flow [2024-06-28 04:05:04,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:04,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:04,331 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 04:05:04,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 04:05:04,331 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:04,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:04,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1055617927, now seen corresponding path program 2 times [2024-06-28 04:05:04,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:04,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298053814] [2024-06-28 04:05:04,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:04,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:05,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:05,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:05,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298053814] [2024-06-28 04:05:05,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298053814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:05,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:05,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:05:05,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581792795] [2024-06-28 04:05:05,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:05,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:05:05,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:05,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:05:05,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:05:05,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 04:05:05,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 308 transitions, 3515 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:05,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:05,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 04:05:05,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:06,053 INFO L124 PetriNetUnfolderBase]: 2189/3440 cut-off events. [2024-06-28 04:05:06,053 INFO L125 PetriNetUnfolderBase]: For 145720/145753 co-relation queries the response was YES. [2024-06-28 04:05:06,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23326 conditions, 3440 events. 2189/3440 cut-off events. For 145720/145753 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 18424 event pairs, 445 based on Foata normal form. 6/3426 useless extension candidates. Maximal degree in co-relation 23221. Up to 3101 conditions per place. [2024-06-28 04:05:06,091 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 236 selfloop transitions, 71 changer transitions 0/332 dead transitions. [2024-06-28 04:05:06,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 332 transitions, 4227 flow [2024-06-28 04:05:06,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:05:06,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:05:06,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 04:05:06,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-06-28 04:05:06,095 INFO L175 Difference]: Start difference. First operand has 231 places, 308 transitions, 3515 flow. Second operand 9 states and 158 transitions. [2024-06-28 04:05:06,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 332 transitions, 4227 flow [2024-06-28 04:05:06,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 332 transitions, 4086 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 04:05:06,529 INFO L231 Difference]: Finished difference. Result has 235 places, 310 transitions, 3557 flow [2024-06-28 04:05:06,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3386, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3557, PETRI_PLACES=235, PETRI_TRANSITIONS=310} [2024-06-28 04:05:06,530 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 194 predicate places. [2024-06-28 04:05:06,530 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 310 transitions, 3557 flow [2024-06-28 04:05:06,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:06,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:06,531 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 04:05:06,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 04:05:06,531 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:06,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:06,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1055618051, now seen corresponding path program 1 times [2024-06-28 04:05:06,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:06,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301629772] [2024-06-28 04:05:06,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:06,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:07,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:07,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:07,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301629772] [2024-06-28 04:05:07,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301629772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:07,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:07,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:05:07,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065320980] [2024-06-28 04:05:07,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:07,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:05:07,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:07,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:05:07,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:05:07,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:05:07,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 310 transitions, 3557 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:07,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:07,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:05:07,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:08,261 INFO L124 PetriNetUnfolderBase]: 2291/3569 cut-off events. [2024-06-28 04:05:08,262 INFO L125 PetriNetUnfolderBase]: For 151282/151282 co-relation queries the response was YES. [2024-06-28 04:05:08,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24330 conditions, 3569 events. 2291/3569 cut-off events. For 151282/151282 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 19005 event pairs, 452 based on Foata normal form. 2/3570 useless extension candidates. Maximal degree in co-relation 24223. Up to 3313 conditions per place. [2024-06-28 04:05:08,298 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 287 selfloop transitions, 65 changer transitions 0/356 dead transitions. [2024-06-28 04:05:08,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 356 transitions, 4658 flow [2024-06-28 04:05:08,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:05:08,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:05:08,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-28 04:05:08,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42272727272727273 [2024-06-28 04:05:08,307 INFO L175 Difference]: Start difference. First operand has 235 places, 310 transitions, 3557 flow. Second operand 11 states and 186 transitions. [2024-06-28 04:05:08,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 356 transitions, 4658 flow [2024-06-28 04:05:08,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 356 transitions, 4488 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 04:05:08,690 INFO L231 Difference]: Finished difference. Result has 241 places, 325 transitions, 3746 flow [2024-06-28 04:05:08,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3406, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3746, PETRI_PLACES=241, PETRI_TRANSITIONS=325} [2024-06-28 04:05:08,695 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 200 predicate places. [2024-06-28 04:05:08,695 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 325 transitions, 3746 flow [2024-06-28 04:05:08,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:08,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:08,695 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 04:05:08,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 04:05:08,695 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:08,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:08,696 INFO L85 PathProgramCache]: Analyzing trace with hash -763334527, now seen corresponding path program 3 times [2024-06-28 04:05:08,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:08,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524648039] [2024-06-28 04:05:08,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:08,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:09,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:09,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:09,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524648039] [2024-06-28 04:05:09,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524648039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:09,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:09,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:05:09,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533222647] [2024-06-28 04:05:09,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:09,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:05:09,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:09,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:05:09,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:05:09,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 04:05:09,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 325 transitions, 3746 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:09,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:09,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 04:05:09,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:10,550 INFO L124 PetriNetUnfolderBase]: 2270/3562 cut-off events. [2024-06-28 04:05:10,551 INFO L125 PetriNetUnfolderBase]: For 173015/173048 co-relation queries the response was YES. [2024-06-28 04:05:10,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24625 conditions, 3562 events. 2270/3562 cut-off events. For 173015/173048 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 19217 event pairs, 451 based on Foata normal form. 17/3559 useless extension candidates. Maximal degree in co-relation 24515. Up to 3111 conditions per place. [2024-06-28 04:05:10,587 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 232 selfloop transitions, 94 changer transitions 0/354 dead transitions. [2024-06-28 04:05:10,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 354 transitions, 4594 flow [2024-06-28 04:05:10,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:05:10,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:05:10,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 04:05:10,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527777777777778 [2024-06-28 04:05:10,588 INFO L175 Difference]: Start difference. First operand has 241 places, 325 transitions, 3746 flow. Second operand 9 states and 163 transitions. [2024-06-28 04:05:10,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 354 transitions, 4594 flow [2024-06-28 04:05:11,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 354 transitions, 4480 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 04:05:11,073 INFO L231 Difference]: Finished difference. Result has 245 places, 331 transitions, 3945 flow [2024-06-28 04:05:11,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3632, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3945, PETRI_PLACES=245, PETRI_TRANSITIONS=331} [2024-06-28 04:05:11,073 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 204 predicate places. [2024-06-28 04:05:11,074 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 331 transitions, 3945 flow [2024-06-28 04:05:11,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:11,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:11,074 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 04:05:11,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 04:05:11,074 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:11,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:11,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1173705607, now seen corresponding path program 4 times [2024-06-28 04:05:11,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:11,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158341451] [2024-06-28 04:05:11,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:11,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:11,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:12,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:12,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:12,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158341451] [2024-06-28 04:05:12,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158341451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:12,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:12,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:05:12,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926919988] [2024-06-28 04:05:12,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:12,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:05:12,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:12,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:05:12,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:05:12,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 04:05:12,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 331 transitions, 3945 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:12,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:12,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 04:05:12,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:13,006 INFO L124 PetriNetUnfolderBase]: 2328/3650 cut-off events. [2024-06-28 04:05:13,006 INFO L125 PetriNetUnfolderBase]: For 189314/189347 co-relation queries the response was YES. [2024-06-28 04:05:13,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25968 conditions, 3650 events. 2328/3650 cut-off events. For 189314/189347 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 19744 event pairs, 459 based on Foata normal form. 17/3647 useless extension candidates. Maximal degree in co-relation 25855. Up to 3267 conditions per place. [2024-06-28 04:05:13,051 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 255 selfloop transitions, 74 changer transitions 0/357 dead transitions. [2024-06-28 04:05:13,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 357 transitions, 4805 flow [2024-06-28 04:05:13,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:05:13,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:05:13,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 04:05:13,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-28 04:05:13,053 INFO L175 Difference]: Start difference. First operand has 245 places, 331 transitions, 3945 flow. Second operand 9 states and 159 transitions. [2024-06-28 04:05:13,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 357 transitions, 4805 flow [2024-06-28 04:05:13,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 357 transitions, 4631 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 04:05:13,632 INFO L231 Difference]: Finished difference. Result has 249 places, 337 transitions, 4055 flow [2024-06-28 04:05:13,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3771, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4055, PETRI_PLACES=249, PETRI_TRANSITIONS=337} [2024-06-28 04:05:13,633 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 208 predicate places. [2024-06-28 04:05:13,633 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 337 transitions, 4055 flow [2024-06-28 04:05:13,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:13,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:13,633 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 04:05:13,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 04:05:13,634 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:13,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:13,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1173710381, now seen corresponding path program 2 times [2024-06-28 04:05:13,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:13,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948250362] [2024-06-28 04:05:13,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:13,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:14,551 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 04:05:14,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:14,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948250362] [2024-06-28 04:05:14,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948250362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:14,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:14,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:05:14,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420105705] [2024-06-28 04:05:14,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:14,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:05:14,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:14,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:05:14,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:05:14,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:05:14,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 337 transitions, 4055 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:14,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:14,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:05:14,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:15,462 INFO L124 PetriNetUnfolderBase]: 2415/3763 cut-off events. [2024-06-28 04:05:15,462 INFO L125 PetriNetUnfolderBase]: For 182528/182528 co-relation queries the response was YES. [2024-06-28 04:05:15,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27222 conditions, 3763 events. 2415/3763 cut-off events. For 182528/182528 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 20280 event pairs, 467 based on Foata normal form. 2/3764 useless extension candidates. Maximal degree in co-relation 27107. Up to 3600 conditions per place. [2024-06-28 04:05:15,503 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 319 selfloop transitions, 37 changer transitions 0/360 dead transitions. [2024-06-28 04:05:15,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 360 transitions, 4888 flow [2024-06-28 04:05:15,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:05:15,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:05:15,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 04:05:15,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025 [2024-06-28 04:05:15,505 INFO L175 Difference]: Start difference. First operand has 249 places, 337 transitions, 4055 flow. Second operand 10 states and 161 transitions. [2024-06-28 04:05:15,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 360 transitions, 4888 flow [2024-06-28 04:05:16,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 360 transitions, 4731 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 04:05:16,137 INFO L231 Difference]: Finished difference. Result has 253 places, 340 transitions, 4017 flow [2024-06-28 04:05:16,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3898, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4017, PETRI_PLACES=253, PETRI_TRANSITIONS=340} [2024-06-28 04:05:16,138 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 212 predicate places. [2024-06-28 04:05:16,138 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 340 transitions, 4017 flow [2024-06-28 04:05:16,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:16,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:16,139 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 04:05:16,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 04:05:16,139 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:16,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:16,139 INFO L85 PathProgramCache]: Analyzing trace with hash -648043233, now seen corresponding path program 3 times [2024-06-28 04:05:16,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:16,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371533068] [2024-06-28 04:05:16,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:16,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:17,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:17,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:17,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371533068] [2024-06-28 04:05:17,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371533068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:17,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:17,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:05:17,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673062540] [2024-06-28 04:05:17,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:17,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:05:17,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:17,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:05:17,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:05:17,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:05:17,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 340 transitions, 4017 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:17,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:17,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:05:17,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:18,053 INFO L124 PetriNetUnfolderBase]: 2441/3799 cut-off events. [2024-06-28 04:05:18,053 INFO L125 PetriNetUnfolderBase]: For 184009/184009 co-relation queries the response was YES. [2024-06-28 04:05:18,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27477 conditions, 3799 events. 2441/3799 cut-off events. For 184009/184009 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 20501 event pairs, 469 based on Foata normal form. 2/3800 useless extension candidates. Maximal degree in co-relation 27361. Up to 3610 conditions per place. [2024-06-28 04:05:18,096 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 316 selfloop transitions, 49 changer transitions 0/369 dead transitions. [2024-06-28 04:05:18,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 369 transitions, 5027 flow [2024-06-28 04:05:18,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:05:18,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:05:18,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 04:05:18,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415 [2024-06-28 04:05:18,097 INFO L175 Difference]: Start difference. First operand has 253 places, 340 transitions, 4017 flow. Second operand 10 states and 166 transitions. [2024-06-28 04:05:18,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 369 transitions, 5027 flow [2024-06-28 04:05:18,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 369 transitions, 4946 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 04:05:18,596 INFO L231 Difference]: Finished difference. Result has 257 places, 347 transitions, 4145 flow [2024-06-28 04:05:18,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3936, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4145, PETRI_PLACES=257, PETRI_TRANSITIONS=347} [2024-06-28 04:05:18,597 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 216 predicate places. [2024-06-28 04:05:18,597 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 347 transitions, 4145 flow [2024-06-28 04:05:18,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:18,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:18,597 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 04:05:18,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 04:05:18,598 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:18,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:18,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1173883361, now seen corresponding path program 4 times [2024-06-28 04:05:18,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:18,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765380403] [2024-06-28 04:05:18,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:18,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:19,488 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 04:05:19,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:19,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765380403] [2024-06-28 04:05:19,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765380403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:19,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:19,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:05:19,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454466818] [2024-06-28 04:05:19,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:19,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:05:19,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:19,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:05:19,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:05:19,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:05:19,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 347 transitions, 4145 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:19,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:19,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:05:19,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:20,439 INFO L124 PetriNetUnfolderBase]: 2435/3791 cut-off events. [2024-06-28 04:05:20,440 INFO L125 PetriNetUnfolderBase]: For 187913/187913 co-relation queries the response was YES. [2024-06-28 04:05:20,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27519 conditions, 3791 events. 2435/3791 cut-off events. For 187913/187913 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 20456 event pairs, 466 based on Foata normal form. 2/3792 useless extension candidates. Maximal degree in co-relation 27401. Up to 3628 conditions per place. [2024-06-28 04:05:20,481 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 329 selfloop transitions, 37 changer transitions 0/370 dead transitions. [2024-06-28 04:05:20,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 370 transitions, 4983 flow [2024-06-28 04:05:20,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:05:20,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:05:20,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-28 04:05:20,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-28 04:05:20,483 INFO L175 Difference]: Start difference. First operand has 257 places, 347 transitions, 4145 flow. Second operand 11 states and 175 transitions. [2024-06-28 04:05:20,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 370 transitions, 4983 flow [2024-06-28 04:05:20,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 370 transitions, 4886 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 04:05:20,993 INFO L231 Difference]: Finished difference. Result has 262 places, 348 transitions, 4144 flow [2024-06-28 04:05:20,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4052, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4144, PETRI_PLACES=262, PETRI_TRANSITIONS=348} [2024-06-28 04:05:20,995 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 221 predicate places. [2024-06-28 04:05:20,996 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 348 transitions, 4144 flow [2024-06-28 04:05:20,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:20,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:20,996 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 04:05:20,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 04:05:20,996 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:20,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:20,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1173890305, now seen corresponding path program 1 times [2024-06-28 04:05:20,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:20,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715292349] [2024-06-28 04:05:20,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:20,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:21,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:21,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:21,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715292349] [2024-06-28 04:05:21,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715292349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:21,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:21,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:05:21,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310638080] [2024-06-28 04:05:21,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:21,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:05:21,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:21,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:05:21,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:05:21,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:05:21,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 348 transitions, 4144 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:21,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:21,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:05:21,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:22,698 INFO L124 PetriNetUnfolderBase]: 2443/3803 cut-off events. [2024-06-28 04:05:22,698 INFO L125 PetriNetUnfolderBase]: For 194114/194114 co-relation queries the response was YES. [2024-06-28 04:05:22,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27742 conditions, 3803 events. 2443/3803 cut-off events. For 194114/194114 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 20505 event pairs, 468 based on Foata normal form. 2/3804 useless extension candidates. Maximal degree in co-relation 27622. Up to 3659 conditions per place. [2024-06-28 04:05:22,738 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 336 selfloop transitions, 27 changer transitions 0/367 dead transitions. [2024-06-28 04:05:22,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 367 transitions, 4962 flow [2024-06-28 04:05:22,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:05:22,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:05:22,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 04:05:22,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-28 04:05:22,739 INFO L175 Difference]: Start difference. First operand has 262 places, 348 transitions, 4144 flow. Second operand 8 states and 133 transitions. [2024-06-28 04:05:22,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 367 transitions, 4962 flow [2024-06-28 04:05:23,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 367 transitions, 4878 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 04:05:23,278 INFO L231 Difference]: Finished difference. Result has 261 places, 350 transitions, 4155 flow [2024-06-28 04:05:23,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4064, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4155, PETRI_PLACES=261, PETRI_TRANSITIONS=350} [2024-06-28 04:05:23,279 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 220 predicate places. [2024-06-28 04:05:23,279 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 350 transitions, 4155 flow [2024-06-28 04:05:23,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:23,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:23,279 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 04:05:23,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 04:05:23,280 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:23,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:23,280 INFO L85 PathProgramCache]: Analyzing trace with hash 2133467467, now seen corresponding path program 2 times [2024-06-28 04:05:23,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:23,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945856382] [2024-06-28 04:05:23,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:23,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:24,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:24,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:24,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945856382] [2024-06-28 04:05:24,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945856382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:24,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:24,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:05:24,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882466188] [2024-06-28 04:05:24,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:24,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:05:24,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:24,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:05:24,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:05:24,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:05:24,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 350 transitions, 4155 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:24,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:24,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:05:24,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:25,130 INFO L124 PetriNetUnfolderBase]: 2451/3815 cut-off events. [2024-06-28 04:05:25,130 INFO L125 PetriNetUnfolderBase]: For 200993/200993 co-relation queries the response was YES. [2024-06-28 04:05:25,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27895 conditions, 3815 events. 2451/3815 cut-off events. For 200993/200993 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 20586 event pairs, 468 based on Foata normal form. 2/3816 useless extension candidates. Maximal degree in co-relation 27774. Up to 3665 conditions per place. [2024-06-28 04:05:25,177 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 335 selfloop transitions, 29 changer transitions 0/368 dead transitions. [2024-06-28 04:05:25,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 368 transitions, 4973 flow [2024-06-28 04:05:25,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:05:25,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:05:25,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 04:05:25,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:05:25,178 INFO L175 Difference]: Start difference. First operand has 261 places, 350 transitions, 4155 flow. Second operand 7 states and 120 transitions. [2024-06-28 04:05:25,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 368 transitions, 4973 flow [2024-06-28 04:05:25,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 368 transitions, 4911 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 04:05:25,726 INFO L231 Difference]: Finished difference. Result has 263 places, 352 transitions, 4195 flow [2024-06-28 04:05:25,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4093, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4195, PETRI_PLACES=263, PETRI_TRANSITIONS=352} [2024-06-28 04:05:25,727 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 222 predicate places. [2024-06-28 04:05:25,727 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 352 transitions, 4195 flow [2024-06-28 04:05:25,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:25,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:25,727 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 04:05:25,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 04:05:25,728 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:25,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:25,728 INFO L85 PathProgramCache]: Analyzing trace with hash -442568421, now seen corresponding path program 5 times [2024-06-28 04:05:25,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:25,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932354852] [2024-06-28 04:05:25,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:25,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:26,713 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 04:05:26,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:26,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932354852] [2024-06-28 04:05:26,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932354852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:26,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:26,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:05:26,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560226062] [2024-06-28 04:05:26,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:26,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:05:26,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:26,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:05:26,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:05:26,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:05:26,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 352 transitions, 4195 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:26,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:26,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:05:26,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:27,566 INFO L124 PetriNetUnfolderBase]: 2461/3829 cut-off events. [2024-06-28 04:05:27,567 INFO L125 PetriNetUnfolderBase]: For 208403/208403 co-relation queries the response was YES. [2024-06-28 04:05:27,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28237 conditions, 3829 events. 2461/3829 cut-off events. For 208403/208403 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 20712 event pairs, 483 based on Foata normal form. 2/3830 useless extension candidates. Maximal degree in co-relation 28115. Up to 3658 conditions per place. [2024-06-28 04:05:27,612 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 335 selfloop transitions, 34 changer transitions 0/373 dead transitions. [2024-06-28 04:05:27,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 373 transitions, 5048 flow [2024-06-28 04:05:27,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:05:27,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:05:27,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 04:05:27,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-28 04:05:27,613 INFO L175 Difference]: Start difference. First operand has 263 places, 352 transitions, 4195 flow. Second operand 8 states and 137 transitions. [2024-06-28 04:05:27,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 373 transitions, 5048 flow [2024-06-28 04:05:28,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 373 transitions, 4966 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 04:05:28,228 INFO L231 Difference]: Finished difference. Result has 266 places, 355 transitions, 4238 flow [2024-06-28 04:05:28,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4113, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4238, PETRI_PLACES=266, PETRI_TRANSITIONS=355} [2024-06-28 04:05:28,229 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 225 predicate places. [2024-06-28 04:05:28,229 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 355 transitions, 4238 flow [2024-06-28 04:05:28,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:28,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:28,229 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 04:05:28,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 04:05:28,229 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:28,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:28,230 INFO L85 PathProgramCache]: Analyzing trace with hash -442741401, now seen corresponding path program 6 times [2024-06-28 04:05:28,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:28,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509818007] [2024-06-28 04:05:28,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:28,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:29,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:29,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:29,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509818007] [2024-06-28 04:05:29,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509818007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:29,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:29,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:05:29,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166921044] [2024-06-28 04:05:29,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:29,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:05:29,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:29,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:05:29,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:05:29,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:05:29,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 355 transitions, 4238 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:29,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:29,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:05:29,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:30,002 INFO L124 PetriNetUnfolderBase]: 2471/3843 cut-off events. [2024-06-28 04:05:30,002 INFO L125 PetriNetUnfolderBase]: For 207925/207925 co-relation queries the response was YES. [2024-06-28 04:05:30,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28224 conditions, 3843 events. 2471/3843 cut-off events. For 207925/207925 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 20775 event pairs, 479 based on Foata normal form. 2/3844 useless extension candidates. Maximal degree in co-relation 28101. Up to 3690 conditions per place. [2024-06-28 04:05:30,051 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 338 selfloop transitions, 35 changer transitions 0/377 dead transitions. [2024-06-28 04:05:30,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 377 transitions, 5144 flow [2024-06-28 04:05:30,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:05:30,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:05:30,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-28 04:05:30,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.385 [2024-06-28 04:05:30,052 INFO L175 Difference]: Start difference. First operand has 266 places, 355 transitions, 4238 flow. Second operand 10 states and 154 transitions. [2024-06-28 04:05:30,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 377 transitions, 5144 flow [2024-06-28 04:05:30,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 377 transitions, 5062 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 04:05:30,721 INFO L231 Difference]: Finished difference. Result has 274 places, 362 transitions, 4378 flow [2024-06-28 04:05:30,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4160, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4378, PETRI_PLACES=274, PETRI_TRANSITIONS=362} [2024-06-28 04:05:30,722 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 233 predicate places. [2024-06-28 04:05:30,722 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 362 transitions, 4378 flow [2024-06-28 04:05:30,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:30,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:30,722 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 04:05:30,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 04:05:30,723 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:30,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:30,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1339344865, now seen corresponding path program 7 times [2024-06-28 04:05:30,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:30,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269029185] [2024-06-28 04:05:30,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:30,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:31,635 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 04:05:31,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:31,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269029185] [2024-06-28 04:05:31,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269029185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:31,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:31,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:05:31,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130810080] [2024-06-28 04:05:31,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:31,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:05:31,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:31,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:05:31,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:05:31,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:05:31,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 362 transitions, 4378 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:31,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:31,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:05:31,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:32,684 INFO L124 PetriNetUnfolderBase]: 2481/3857 cut-off events. [2024-06-28 04:05:32,684 INFO L125 PetriNetUnfolderBase]: For 215158/215158 co-relation queries the response was YES. [2024-06-28 04:05:32,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28531 conditions, 3857 events. 2481/3857 cut-off events. For 215158/215158 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 20866 event pairs, 479 based on Foata normal form. 2/3858 useless extension candidates. Maximal degree in co-relation 28404. Up to 3634 conditions per place. [2024-06-28 04:05:32,722 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 331 selfloop transitions, 63 changer transitions 0/398 dead transitions. [2024-06-28 04:05:32,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 398 transitions, 5633 flow [2024-06-28 04:05:32,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:05:32,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:05:32,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 04:05:32,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 04:05:32,725 INFO L175 Difference]: Start difference. First operand has 274 places, 362 transitions, 4378 flow. Second operand 9 states and 160 transitions. [2024-06-28 04:05:32,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 398 transitions, 5633 flow [2024-06-28 04:05:33,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 398 transitions, 5541 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 04:05:33,266 INFO L231 Difference]: Finished difference. Result has 279 places, 372 transitions, 4629 flow [2024-06-28 04:05:33,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4286, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4629, PETRI_PLACES=279, PETRI_TRANSITIONS=372} [2024-06-28 04:05:33,267 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 238 predicate places. [2024-06-28 04:05:33,267 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 372 transitions, 4629 flow [2024-06-28 04:05:33,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:33,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:33,267 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 04:05:33,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 04:05:33,267 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:33,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:33,268 INFO L85 PathProgramCache]: Analyzing trace with hash -442746175, now seen corresponding path program 5 times [2024-06-28 04:05:33,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:33,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167110061] [2024-06-28 04:05:33,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:33,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:34,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:34,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:34,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167110061] [2024-06-28 04:05:34,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167110061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:34,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:34,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:05:34,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85217265] [2024-06-28 04:05:34,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:34,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:05:34,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:34,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:05:34,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:05:34,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-28 04:05:34,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 372 transitions, 4629 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:34,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:34,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-28 04:05:34,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:35,227 INFO L124 PetriNetUnfolderBase]: 2432/3806 cut-off events. [2024-06-28 04:05:35,227 INFO L125 PetriNetUnfolderBase]: For 237237/237270 co-relation queries the response was YES. [2024-06-28 04:05:35,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28557 conditions, 3806 events. 2432/3806 cut-off events. For 237237/237270 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 20692 event pairs, 429 based on Foata normal form. 17/3803 useless extension candidates. Maximal degree in co-relation 28427. Up to 3100 conditions per place. [2024-06-28 04:05:35,274 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 281 selfloop transitions, 82 changer transitions 0/405 dead transitions. [2024-06-28 04:05:35,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 405 transitions, 5586 flow [2024-06-28 04:05:35,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:05:35,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:05:35,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-28 04:05:35,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-28 04:05:35,276 INFO L175 Difference]: Start difference. First operand has 279 places, 372 transitions, 4629 flow. Second operand 8 states and 156 transitions. [2024-06-28 04:05:35,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 405 transitions, 5586 flow [2024-06-28 04:05:36,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 405 transitions, 5413 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-28 04:05:36,020 INFO L231 Difference]: Finished difference. Result has 282 places, 376 transitions, 4759 flow [2024-06-28 04:05:36,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4456, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4759, PETRI_PLACES=282, PETRI_TRANSITIONS=376} [2024-06-28 04:05:36,021 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 241 predicate places. [2024-06-28 04:05:36,021 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 376 transitions, 4759 flow [2024-06-28 04:05:36,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:36,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:36,022 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 04:05:36,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 04:05:36,022 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:36,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:36,022 INFO L85 PathProgramCache]: Analyzing trace with hash -214660327, now seen corresponding path program 3 times [2024-06-28 04:05:36,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:36,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347556899] [2024-06-28 04:05:36,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:36,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:36,816 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 04:05:36,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:36,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347556899] [2024-06-28 04:05:36,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347556899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:36,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:36,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:05:36,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498208889] [2024-06-28 04:05:36,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:36,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:05:36,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:36,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:05:36,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:05:36,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:05:36,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 376 transitions, 4759 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:36,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:36,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:05:36,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:37,657 INFO L124 PetriNetUnfolderBase]: 2520/3918 cut-off events. [2024-06-28 04:05:37,658 INFO L125 PetriNetUnfolderBase]: For 235354/235354 co-relation queries the response was YES. [2024-06-28 04:05:37,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30013 conditions, 3918 events. 2520/3918 cut-off events. For 235354/235354 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 21263 event pairs, 494 based on Foata normal form. 2/3919 useless extension candidates. Maximal degree in co-relation 29882. Up to 3801 conditions per place. [2024-06-28 04:05:37,707 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 369 selfloop transitions, 16 changer transitions 0/389 dead transitions. [2024-06-28 04:05:37,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 389 transitions, 5593 flow [2024-06-28 04:05:37,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:05:37,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:05:37,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-28 04:05:37,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035714285714286 [2024-06-28 04:05:37,715 INFO L175 Difference]: Start difference. First operand has 282 places, 376 transitions, 4759 flow. Second operand 7 states and 113 transitions. [2024-06-28 04:05:37,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 389 transitions, 5593 flow [2024-06-28 04:05:38,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 389 transitions, 5439 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-28 04:05:38,455 INFO L231 Difference]: Finished difference. Result has 284 places, 378 transitions, 4678 flow [2024-06-28 04:05:38,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4605, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4678, PETRI_PLACES=284, PETRI_TRANSITIONS=378} [2024-06-28 04:05:38,457 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 243 predicate places. [2024-06-28 04:05:38,457 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 378 transitions, 4678 flow [2024-06-28 04:05:38,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:38,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:38,457 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 04:05:38,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 04:05:38,458 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:38,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:38,458 INFO L85 PathProgramCache]: Analyzing trace with hash 433623271, now seen corresponding path program 1 times [2024-06-28 04:05:38,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:38,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461151285] [2024-06-28 04:05:38,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:38,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:39,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:39,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:39,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461151285] [2024-06-28 04:05:39,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461151285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:39,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:39,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:05:39,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693683528] [2024-06-28 04:05:39,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:39,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:05:39,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:39,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:05:39,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:05:39,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:05:39,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 378 transitions, 4678 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:39,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:39,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:05:39,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:40,323 INFO L124 PetriNetUnfolderBase]: 2517/3914 cut-off events. [2024-06-28 04:05:40,323 INFO L125 PetriNetUnfolderBase]: For 230945/230945 co-relation queries the response was YES. [2024-06-28 04:05:40,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29836 conditions, 3914 events. 2517/3914 cut-off events. For 230945/230945 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 21181 event pairs, 491 based on Foata normal form. 1/3914 useless extension candidates. Maximal degree in co-relation 29704. Up to 3786 conditions per place. [2024-06-28 04:05:40,368 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 360 selfloop transitions, 25 changer transitions 0/389 dead transitions. [2024-06-28 04:05:40,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 389 transitions, 5484 flow [2024-06-28 04:05:40,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:05:40,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:05:40,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-28 04:05:40,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-28 04:05:40,370 INFO L175 Difference]: Start difference. First operand has 284 places, 378 transitions, 4678 flow. Second operand 7 states and 115 transitions. [2024-06-28 04:05:40,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 389 transitions, 5484 flow [2024-06-28 04:05:41,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 389 transitions, 5409 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 04:05:41,213 INFO L231 Difference]: Finished difference. Result has 286 places, 378 transitions, 4663 flow [2024-06-28 04:05:41,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4603, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4663, PETRI_PLACES=286, PETRI_TRANSITIONS=378} [2024-06-28 04:05:41,214 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 245 predicate places. [2024-06-28 04:05:41,214 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 378 transitions, 4663 flow [2024-06-28 04:05:41,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:41,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:41,214 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 04:05:41,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 04:05:41,214 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:41,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:41,215 INFO L85 PathProgramCache]: Analyzing trace with hash -206386117, now seen corresponding path program 4 times [2024-06-28 04:05:41,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:41,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715817085] [2024-06-28 04:05:41,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:41,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:41,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:41,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:41,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:41,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715817085] [2024-06-28 04:05:41,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715817085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:41,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:41,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:05:41,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002508465] [2024-06-28 04:05:41,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:41,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:05:41,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:41,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:05:41,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:05:42,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:05:42,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 378 transitions, 4663 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:42,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:42,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:05:42,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:42,833 INFO L124 PetriNetUnfolderBase]: 2525/3926 cut-off events. [2024-06-28 04:05:42,833 INFO L125 PetriNetUnfolderBase]: For 239502/239502 co-relation queries the response was YES. [2024-06-28 04:05:42,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30003 conditions, 3926 events. 2525/3926 cut-off events. For 239502/239502 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 21267 event pairs, 495 based on Foata normal form. 2/3927 useless extension candidates. Maximal degree in co-relation 29870. Up to 3797 conditions per place. [2024-06-28 04:05:42,883 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 364 selfloop transitions, 23 changer transitions 0/391 dead transitions. [2024-06-28 04:05:42,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 391 transitions, 5505 flow [2024-06-28 04:05:42,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:05:42,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:05:42,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-28 04:05:42,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40714285714285714 [2024-06-28 04:05:42,884 INFO L175 Difference]: Start difference. First operand has 286 places, 378 transitions, 4663 flow. Second operand 7 states and 114 transitions. [2024-06-28 04:05:42,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 391 transitions, 5505 flow [2024-06-28 04:05:43,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 391 transitions, 5437 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 04:05:43,722 INFO L231 Difference]: Finished difference. Result has 287 places, 380 transitions, 4689 flow [2024-06-28 04:05:43,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4595, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4689, PETRI_PLACES=287, PETRI_TRANSITIONS=380} [2024-06-28 04:05:43,723 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 246 predicate places. [2024-06-28 04:05:43,723 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 380 transitions, 4689 flow [2024-06-28 04:05:43,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:43,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:43,723 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 04:05:43,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 04:05:43,723 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:43,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:43,724 INFO L85 PathProgramCache]: Analyzing trace with hash -206089447, now seen corresponding path program 5 times [2024-06-28 04:05:43,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:43,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824591841] [2024-06-28 04:05:43,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:43,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:44,474 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 04:05:44,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:44,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824591841] [2024-06-28 04:05:44,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824591841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:44,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:44,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:05:44,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478132574] [2024-06-28 04:05:44,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:44,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:05:44,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:44,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:05:44,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:05:44,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:05:44,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 380 transitions, 4689 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:44,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:44,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:05:44,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:45,348 INFO L124 PetriNetUnfolderBase]: 2520/3919 cut-off events. [2024-06-28 04:05:45,349 INFO L125 PetriNetUnfolderBase]: For 243441/243441 co-relation queries the response was YES. [2024-06-28 04:05:45,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30072 conditions, 3919 events. 2520/3919 cut-off events. For 243441/243441 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 21230 event pairs, 488 based on Foata normal form. 2/3920 useless extension candidates. Maximal degree in co-relation 29938. Up to 3797 conditions per place. [2024-06-28 04:05:45,397 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 372 selfloop transitions, 17 changer transitions 0/393 dead transitions. [2024-06-28 04:05:45,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 393 transitions, 5535 flow [2024-06-28 04:05:45,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:05:45,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:05:45,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-28 04:05:45,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035714285714286 [2024-06-28 04:05:45,398 INFO L175 Difference]: Start difference. First operand has 287 places, 380 transitions, 4689 flow. Second operand 7 states and 113 transitions. [2024-06-28 04:05:45,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 393 transitions, 5535 flow [2024-06-28 04:05:46,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 393 transitions, 5457 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 04:05:46,248 INFO L231 Difference]: Finished difference. Result has 289 places, 382 transitions, 4694 flow [2024-06-28 04:05:46,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4615, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4694, PETRI_PLACES=289, PETRI_TRANSITIONS=382} [2024-06-28 04:05:46,249 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 248 predicate places. [2024-06-28 04:05:46,249 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 382 transitions, 4694 flow [2024-06-28 04:05:46,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:46,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:46,250 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 04:05:46,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 04:05:46,250 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:46,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:46,250 INFO L85 PathProgramCache]: Analyzing trace with hash -214667271, now seen corresponding path program 8 times [2024-06-28 04:05:46,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:46,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503308680] [2024-06-28 04:05:46,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:46,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:47,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:47,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:47,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503308680] [2024-06-28 04:05:47,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503308680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:47,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:47,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:05:47,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875547403] [2024-06-28 04:05:47,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:47,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:05:47,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:47,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:05:47,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:05:47,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:05:47,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 382 transitions, 4694 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:47,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:47,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:05:47,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:48,020 INFO L124 PetriNetUnfolderBase]: 2514/3911 cut-off events. [2024-06-28 04:05:48,020 INFO L125 PetriNetUnfolderBase]: For 239525/239525 co-relation queries the response was YES. [2024-06-28 04:05:48,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29815 conditions, 3911 events. 2514/3911 cut-off events. For 239525/239525 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 21198 event pairs, 491 based on Foata normal form. 2/3912 useless extension candidates. Maximal degree in co-relation 29680. Up to 3784 conditions per place. [2024-06-28 04:05:48,067 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 372 selfloop transitions, 20 changer transitions 0/396 dead transitions. [2024-06-28 04:05:48,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 396 transitions, 5540 flow [2024-06-28 04:05:48,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:05:48,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:05:48,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-28 04:05:48,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 04:05:48,069 INFO L175 Difference]: Start difference. First operand has 289 places, 382 transitions, 4694 flow. Second operand 8 states and 128 transitions. [2024-06-28 04:05:48,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 396 transitions, 5540 flow [2024-06-28 04:05:48,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 396 transitions, 5461 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 04:05:48,896 INFO L231 Difference]: Finished difference. Result has 292 places, 383 transitions, 4681 flow [2024-06-28 04:05:48,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4619, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4681, PETRI_PLACES=292, PETRI_TRANSITIONS=383} [2024-06-28 04:05:48,897 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 251 predicate places. [2024-06-28 04:05:48,897 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 383 transitions, 4681 flow [2024-06-28 04:05:48,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:48,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:48,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:48,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 04:05:48,897 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:48,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:48,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1221888491, now seen corresponding path program 1 times [2024-06-28 04:05:48,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:48,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196566505] [2024-06-28 04:05:48,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:48,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:49,903 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 04:05:49,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:49,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196566505] [2024-06-28 04:05:49,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196566505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:49,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:49,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:05:49,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322955914] [2024-06-28 04:05:49,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:49,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:05:49,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:49,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:05:49,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:05:49,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:05:49,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 383 transitions, 4681 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:49,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:49,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:05:49,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:50,822 INFO L124 PetriNetUnfolderBase]: 2519/3918 cut-off events. [2024-06-28 04:05:50,823 INFO L125 PetriNetUnfolderBase]: For 246041/246041 co-relation queries the response was YES. [2024-06-28 04:05:50,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29937 conditions, 3918 events. 2519/3918 cut-off events. For 246041/246041 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 21269 event pairs, 496 based on Foata normal form. 1/3918 useless extension candidates. Maximal degree in co-relation 29801. Up to 3490 conditions per place. [2024-06-28 04:05:50,870 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 289 selfloop transitions, 112 changer transitions 0/405 dead transitions. [2024-06-28 04:05:50,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 405 transitions, 5785 flow [2024-06-28 04:05:50,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:05:50,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:05:50,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 04:05:50,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4607142857142857 [2024-06-28 04:05:50,872 INFO L175 Difference]: Start difference. First operand has 292 places, 383 transitions, 4681 flow. Second operand 7 states and 129 transitions. [2024-06-28 04:05:50,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 405 transitions, 5785 flow [2024-06-28 04:05:51,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 405 transitions, 5725 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 04:05:51,382 INFO L231 Difference]: Finished difference. Result has 293 places, 389 transitions, 5000 flow [2024-06-28 04:05:51,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4621, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5000, PETRI_PLACES=293, PETRI_TRANSITIONS=389} [2024-06-28 04:05:51,383 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 252 predicate places. [2024-06-28 04:05:51,383 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 389 transitions, 5000 flow [2024-06-28 04:05:51,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:51,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:51,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:51,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 04:05:51,383 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:51,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:51,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1194183961, now seen corresponding path program 2 times [2024-06-28 04:05:51,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:51,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166084116] [2024-06-28 04:05:51,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:51,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:52,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:52,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:52,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166084116] [2024-06-28 04:05:52,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166084116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:52,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:52,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:05:52,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243900814] [2024-06-28 04:05:52,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:52,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:05:52,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:52,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:05:52,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:05:52,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:05:52,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 389 transitions, 5000 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:52,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:52,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:05:52,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:53,454 INFO L124 PetriNetUnfolderBase]: 2534/3939 cut-off events. [2024-06-28 04:05:53,454 INFO L125 PetriNetUnfolderBase]: For 256183/256183 co-relation queries the response was YES. [2024-06-28 04:05:53,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30691 conditions, 3939 events. 2534/3939 cut-off events. For 256183/256183 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 21394 event pairs, 494 based on Foata normal form. 1/3939 useless extension candidates. Maximal degree in co-relation 30554. Up to 3610 conditions per place. [2024-06-28 04:05:53,494 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 312 selfloop transitions, 94 changer transitions 0/410 dead transitions. [2024-06-28 04:05:53,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 410 transitions, 5986 flow [2024-06-28 04:05:53,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:05:53,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:05:53,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-28 04:05:53,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-06-28 04:05:53,495 INFO L175 Difference]: Start difference. First operand has 293 places, 389 transitions, 5000 flow. Second operand 7 states and 124 transitions. [2024-06-28 04:05:53,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 410 transitions, 5986 flow [2024-06-28 04:05:54,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 410 transitions, 5832 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 04:05:54,218 INFO L231 Difference]: Finished difference. Result has 296 places, 398 transitions, 5201 flow [2024-06-28 04:05:54,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4854, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5201, PETRI_PLACES=296, PETRI_TRANSITIONS=398} [2024-06-28 04:05:54,219 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 255 predicate places. [2024-06-28 04:05:54,219 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 398 transitions, 5201 flow [2024-06-28 04:05:54,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:54,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:54,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:54,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 04:05:54,220 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:54,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:54,220 INFO L85 PathProgramCache]: Analyzing trace with hash 189821551, now seen corresponding path program 1 times [2024-06-28 04:05:54,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:54,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815141630] [2024-06-28 04:05:54,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:54,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:55,122 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 04:05:55,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:55,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815141630] [2024-06-28 04:05:55,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815141630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:55,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:55,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:05:55,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723081701] [2024-06-28 04:05:55,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:55,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:05:55,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:55,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:05:55,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:05:55,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:05:55,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 398 transitions, 5201 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:55,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:55,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:05:55,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:56,115 INFO L124 PetriNetUnfolderBase]: 2560/3977 cut-off events. [2024-06-28 04:05:56,115 INFO L125 PetriNetUnfolderBase]: For 261827/261827 co-relation queries the response was YES. [2024-06-28 04:05:56,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31335 conditions, 3977 events. 2560/3977 cut-off events. For 261827/261827 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 21571 event pairs, 471 based on Foata normal form. 2/3978 useless extension candidates. Maximal degree in co-relation 31197. Up to 3608 conditions per place. [2024-06-28 04:05:56,166 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 330 selfloop transitions, 94 changer transitions 0/428 dead transitions. [2024-06-28 04:05:56,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 428 transitions, 6429 flow [2024-06-28 04:05:56,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:05:56,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:05:56,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 04:05:56,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446875 [2024-06-28 04:05:56,168 INFO L175 Difference]: Start difference. First operand has 296 places, 398 transitions, 5201 flow. Second operand 8 states and 143 transitions. [2024-06-28 04:05:56,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 428 transitions, 6429 flow [2024-06-28 04:05:57,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 428 transitions, 6204 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 04:05:57,203 INFO L231 Difference]: Finished difference. Result has 300 places, 407 transitions, 5360 flow [2024-06-28 04:05:57,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4978, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5360, PETRI_PLACES=300, PETRI_TRANSITIONS=407} [2024-06-28 04:05:57,204 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 259 predicate places. [2024-06-28 04:05:57,204 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 407 transitions, 5360 flow [2024-06-28 04:05:57,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:57,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:57,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:57,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 04:05:57,205 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:57,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:57,205 INFO L85 PathProgramCache]: Analyzing trace with hash -70971107, now seen corresponding path program 2 times [2024-06-28 04:05:57,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:57,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288046867] [2024-06-28 04:05:57,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:57,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:58,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:58,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:58,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288046867] [2024-06-28 04:05:58,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288046867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:58,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:58,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:05:58,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580606080] [2024-06-28 04:05:58,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:58,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:05:58,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:58,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:05:58,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:05:58,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:05:58,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 407 transitions, 5360 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:58,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:58,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:05:58,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:59,066 INFO L124 PetriNetUnfolderBase]: 2570/3991 cut-off events. [2024-06-28 04:05:59,066 INFO L125 PetriNetUnfolderBase]: For 264914/264914 co-relation queries the response was YES. [2024-06-28 04:05:59,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31975 conditions, 3991 events. 2570/3991 cut-off events. For 264914/264914 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 21638 event pairs, 471 based on Foata normal form. 2/3992 useless extension candidates. Maximal degree in co-relation 31836. Up to 3618 conditions per place. [2024-06-28 04:05:59,114 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 328 selfloop transitions, 98 changer transitions 0/430 dead transitions. [2024-06-28 04:05:59,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 430 transitions, 6514 flow [2024-06-28 04:05:59,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:05:59,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:05:59,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 04:05:59,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-28 04:05:59,116 INFO L175 Difference]: Start difference. First operand has 300 places, 407 transitions, 5360 flow. Second operand 7 states and 128 transitions. [2024-06-28 04:05:59,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 430 transitions, 6514 flow [2024-06-28 04:05:59,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 430 transitions, 6412 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-28 04:05:59,896 INFO L231 Difference]: Finished difference. Result has 304 places, 410 transitions, 5556 flow [2024-06-28 04:05:59,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5258, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5556, PETRI_PLACES=304, PETRI_TRANSITIONS=410} [2024-06-28 04:05:59,897 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 263 predicate places. [2024-06-28 04:05:59,897 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 410 transitions, 5556 flow [2024-06-28 04:05:59,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:59,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:59,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:59,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 04:05:59,898 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:59,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:59,898 INFO L85 PathProgramCache]: Analyzing trace with hash -77883797, now seen corresponding path program 3 times [2024-06-28 04:05:59,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:59,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189454662] [2024-06-28 04:05:59,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:59,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:00,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:00,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:00,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189454662] [2024-06-28 04:06:00,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189454662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:00,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:00,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:06:00,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593832698] [2024-06-28 04:06:00,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:00,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:06:00,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:00,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:06:00,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:06:00,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:06:00,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 410 transitions, 5556 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:00,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:00,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:06:00,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:01,727 INFO L124 PetriNetUnfolderBase]: 2564/3981 cut-off events. [2024-06-28 04:06:01,727 INFO L125 PetriNetUnfolderBase]: For 268616/268616 co-relation queries the response was YES. [2024-06-28 04:06:01,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32164 conditions, 3981 events. 2564/3981 cut-off events. For 268616/268616 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 21576 event pairs, 486 based on Foata normal form. 2/3982 useless extension candidates. Maximal degree in co-relation 32023. Up to 3764 conditions per place. [2024-06-28 04:06:01,778 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 373 selfloop transitions, 43 changer transitions 0/420 dead transitions. [2024-06-28 04:06:01,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 420 transitions, 6432 flow [2024-06-28 04:06:01,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:06:01,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:06:01,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-28 04:06:01,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-28 04:06:01,779 INFO L175 Difference]: Start difference. First operand has 304 places, 410 transitions, 5556 flow. Second operand 6 states and 106 transitions. [2024-06-28 04:06:01,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 420 transitions, 6432 flow [2024-06-28 04:06:02,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 420 transitions, 6213 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-28 04:06:02,712 INFO L231 Difference]: Finished difference. Result has 304 places, 410 transitions, 5437 flow [2024-06-28 04:06:02,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5337, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5437, PETRI_PLACES=304, PETRI_TRANSITIONS=410} [2024-06-28 04:06:02,713 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 263 predicate places. [2024-06-28 04:06:02,713 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 410 transitions, 5437 flow [2024-06-28 04:06:02,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:02,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:02,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:02,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 04:06:02,713 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:02,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:02,714 INFO L85 PathProgramCache]: Analyzing trace with hash -78121133, now seen corresponding path program 3 times [2024-06-28 04:06:02,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:02,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566150254] [2024-06-28 04:06:02,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:02,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:03,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:03,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:03,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566150254] [2024-06-28 04:06:03,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566150254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:03,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:03,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:06:03,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718727207] [2024-06-28 04:06:03,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:03,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:06:03,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:03,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:06:03,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:06:03,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:06:03,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 410 transitions, 5437 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:03,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:03,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:06:03,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:04,839 INFO L124 PetriNetUnfolderBase]: 2625/4075 cut-off events. [2024-06-28 04:06:04,840 INFO L125 PetriNetUnfolderBase]: For 259596/259596 co-relation queries the response was YES. [2024-06-28 04:06:04,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32548 conditions, 4075 events. 2625/4075 cut-off events. For 259596/259596 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 22097 event pairs, 482 based on Foata normal form. 1/4075 useless extension candidates. Maximal degree in co-relation 32408. Up to 3858 conditions per place. [2024-06-28 04:06:04,889 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 392 selfloop transitions, 65 changer transitions 0/461 dead transitions. [2024-06-28 04:06:04,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 461 transitions, 6933 flow [2024-06-28 04:06:04,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:06:04,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:06:04,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 04:06:04,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405 [2024-06-28 04:06:04,890 INFO L175 Difference]: Start difference. First operand has 304 places, 410 transitions, 5437 flow. Second operand 10 states and 162 transitions. [2024-06-28 04:06:04,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 461 transitions, 6933 flow [2024-06-28 04:06:05,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 461 transitions, 6787 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 04:06:05,805 INFO L231 Difference]: Finished difference. Result has 311 places, 442 transitions, 6006 flow [2024-06-28 04:06:05,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5331, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6006, PETRI_PLACES=311, PETRI_TRANSITIONS=442} [2024-06-28 04:06:05,806 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 270 predicate places. [2024-06-28 04:06:05,806 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 442 transitions, 6006 flow [2024-06-28 04:06:05,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:05,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:05,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:05,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 04:06:05,807 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:05,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:05,807 INFO L85 PathProgramCache]: Analyzing trace with hash 571621221, now seen corresponding path program 1 times [2024-06-28 04:06:05,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:05,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774553326] [2024-06-28 04:06:05,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:05,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:06,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:06,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:06,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774553326] [2024-06-28 04:06:06,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774553326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:06,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:06,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:06:06,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147456424] [2024-06-28 04:06:06,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:06,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:06:06,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:06,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:06:06,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:06:06,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:06:06,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 442 transitions, 6006 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:06,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:06,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:06:06,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:07,761 INFO L124 PetriNetUnfolderBase]: 2740/4249 cut-off events. [2024-06-28 04:06:07,761 INFO L125 PetriNetUnfolderBase]: For 275161/275167 co-relation queries the response was YES. [2024-06-28 04:06:07,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34289 conditions, 4249 events. 2740/4249 cut-off events. For 275161/275167 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 23140 event pairs, 452 based on Foata normal form. 10/4258 useless extension candidates. Maximal degree in co-relation 34146. Up to 3780 conditions per place. [2024-06-28 04:06:07,808 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 386 selfloop transitions, 113 changer transitions 0/503 dead transitions. [2024-06-28 04:06:07,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 503 transitions, 7798 flow [2024-06-28 04:06:07,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:06:07,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:06:07,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 04:06:07,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 04:06:07,810 INFO L175 Difference]: Start difference. First operand has 311 places, 442 transitions, 6006 flow. Second operand 9 states and 162 transitions. [2024-06-28 04:06:07,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 503 transitions, 7798 flow [2024-06-28 04:06:08,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 503 transitions, 7639 flow, removed 54 selfloop flow, removed 2 redundant places. [2024-06-28 04:06:08,763 INFO L231 Difference]: Finished difference. Result has 320 places, 467 transitions, 6630 flow [2024-06-28 04:06:08,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5847, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6630, PETRI_PLACES=320, PETRI_TRANSITIONS=467} [2024-06-28 04:06:08,763 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 279 predicate places. [2024-06-28 04:06:08,763 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 467 transitions, 6630 flow [2024-06-28 04:06:08,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:08,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:08,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:08,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 04:06:08,764 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:08,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:08,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1472998501, now seen corresponding path program 2 times [2024-06-28 04:06:08,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:08,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211364064] [2024-06-28 04:06:08,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:08,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:09,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:09,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:09,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211364064] [2024-06-28 04:06:09,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211364064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:09,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:09,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:06:09,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194284937] [2024-06-28 04:06:09,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:09,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:06:09,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:09,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:06:09,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:06:09,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:06:09,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 467 transitions, 6630 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:09,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:09,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:06:09,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:10,705 INFO L124 PetriNetUnfolderBase]: 2792/4325 cut-off events. [2024-06-28 04:06:10,706 INFO L125 PetriNetUnfolderBase]: For 297183/297189 co-relation queries the response was YES. [2024-06-28 04:06:10,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36014 conditions, 4325 events. 2792/4325 cut-off events. For 297183/297189 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 23579 event pairs, 458 based on Foata normal form. 10/4334 useless extension candidates. Maximal degree in co-relation 35867. Up to 3964 conditions per place. [2024-06-28 04:06:10,767 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 415 selfloop transitions, 86 changer transitions 0/505 dead transitions. [2024-06-28 04:06:10,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 505 transitions, 8110 flow [2024-06-28 04:06:10,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:06:10,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:06:10,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-28 04:06:10,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42727272727272725 [2024-06-28 04:06:10,769 INFO L175 Difference]: Start difference. First operand has 320 places, 467 transitions, 6630 flow. Second operand 11 states and 188 transitions. [2024-06-28 04:06:10,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 505 transitions, 8110 flow [2024-06-28 04:06:12,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 505 transitions, 7929 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-06-28 04:06:12,064 INFO L231 Difference]: Finished difference. Result has 327 places, 475 transitions, 6836 flow [2024-06-28 04:06:12,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6471, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6836, PETRI_PLACES=327, PETRI_TRANSITIONS=475} [2024-06-28 04:06:12,065 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 286 predicate places. [2024-06-28 04:06:12,065 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 475 transitions, 6836 flow [2024-06-28 04:06:12,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:12,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:12,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:12,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 04:06:12,065 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:12,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:12,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1583210033, now seen corresponding path program 3 times [2024-06-28 04:06:12,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:12,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072975050] [2024-06-28 04:06:12,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:12,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:12,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:12,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:12,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072975050] [2024-06-28 04:06:12,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072975050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:12,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:12,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:06:12,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964173605] [2024-06-28 04:06:12,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:12,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:06:12,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:12,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:06:12,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:06:12,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:06:12,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 475 transitions, 6836 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:12,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:12,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:06:12,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:13,927 INFO L124 PetriNetUnfolderBase]: 2949/4562 cut-off events. [2024-06-28 04:06:13,927 INFO L125 PetriNetUnfolderBase]: For 301386/301388 co-relation queries the response was YES. [2024-06-28 04:06:13,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38138 conditions, 4562 events. 2949/4562 cut-off events. For 301386/301388 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 25041 event pairs, 493 based on Foata normal form. 6/4567 useless extension candidates. Maximal degree in co-relation 37989. Up to 4255 conditions per place. [2024-06-28 04:06:13,990 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 482 selfloop transitions, 59 changer transitions 0/545 dead transitions. [2024-06-28 04:06:13,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 545 transitions, 8924 flow [2024-06-28 04:06:13,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:06:13,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:06:13,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-28 04:06:13,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4159090909090909 [2024-06-28 04:06:13,991 INFO L175 Difference]: Start difference. First operand has 327 places, 475 transitions, 6836 flow. Second operand 11 states and 183 transitions. [2024-06-28 04:06:13,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 545 transitions, 8924 flow [2024-06-28 04:06:15,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 545 transitions, 8753 flow, removed 59 selfloop flow, removed 5 redundant places. [2024-06-28 04:06:15,221 INFO L231 Difference]: Finished difference. Result has 337 places, 509 transitions, 7631 flow [2024-06-28 04:06:15,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6731, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7631, PETRI_PLACES=337, PETRI_TRANSITIONS=509} [2024-06-28 04:06:15,221 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 296 predicate places. [2024-06-28 04:06:15,221 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 509 transitions, 7631 flow [2024-06-28 04:06:15,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:15,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:15,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:15,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 04:06:15,223 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:15,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:15,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1216783090, now seen corresponding path program 1 times [2024-06-28 04:06:15,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:15,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747572565] [2024-06-28 04:06:15,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:15,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:16,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:16,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:16,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747572565] [2024-06-28 04:06:16,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747572565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:16,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:16,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:06:16,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219319065] [2024-06-28 04:06:16,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:16,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:06:16,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:16,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:06:16,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:06:16,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:06:16,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 509 transitions, 7631 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:16,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:16,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:06:16,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:17,089 INFO L124 PetriNetUnfolderBase]: 2959/4567 cut-off events. [2024-06-28 04:06:17,090 INFO L125 PetriNetUnfolderBase]: For 297730/297730 co-relation queries the response was YES. [2024-06-28 04:06:17,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38382 conditions, 4567 events. 2959/4567 cut-off events. For 297730/297730 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 25002 event pairs, 521 based on Foata normal form. 2/4568 useless extension candidates. Maximal degree in co-relation 38228. Up to 4246 conditions per place. [2024-06-28 04:06:17,155 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 443 selfloop transitions, 76 changer transitions 0/523 dead transitions. [2024-06-28 04:06:17,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 523 transitions, 8803 flow [2024-06-28 04:06:17,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:06:17,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:06:17,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-28 04:06:17,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44583333333333336 [2024-06-28 04:06:17,157 INFO L175 Difference]: Start difference. First operand has 337 places, 509 transitions, 7631 flow. Second operand 6 states and 107 transitions. [2024-06-28 04:06:17,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 523 transitions, 8803 flow [2024-06-28 04:06:18,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 523 transitions, 8621 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-28 04:06:18,551 INFO L231 Difference]: Finished difference. Result has 337 places, 512 transitions, 7709 flow [2024-06-28 04:06:18,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7449, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7709, PETRI_PLACES=337, PETRI_TRANSITIONS=512} [2024-06-28 04:06:18,551 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 296 predicate places. [2024-06-28 04:06:18,551 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 512 transitions, 7709 flow [2024-06-28 04:06:18,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:18,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:18,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:18,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 04:06:18,552 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:18,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:18,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1282032125, now seen corresponding path program 4 times [2024-06-28 04:06:18,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:18,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362503818] [2024-06-28 04:06:18,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:18,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:19,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:19,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:19,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362503818] [2024-06-28 04:06:19,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362503818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:19,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:19,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:06:19,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245679077] [2024-06-28 04:06:19,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:19,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:06:19,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:19,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:06:19,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:06:19,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:06:19,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 512 transitions, 7709 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:19,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:19,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:06:19,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:20,544 INFO L124 PetriNetUnfolderBase]: 3011/4649 cut-off events. [2024-06-28 04:06:20,544 INFO L125 PetriNetUnfolderBase]: For 319957/319963 co-relation queries the response was YES. [2024-06-28 04:06:20,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39619 conditions, 4649 events. 3011/4649 cut-off events. For 319957/319963 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 25581 event pairs, 504 based on Foata normal form. 10/4658 useless extension candidates. Maximal degree in co-relation 39465. Up to 4154 conditions per place. [2024-06-28 04:06:20,608 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 446 selfloop transitions, 96 changer transitions 0/546 dead transitions. [2024-06-28 04:06:20,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 546 transitions, 9375 flow [2024-06-28 04:06:20,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:06:20,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:06:20,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 04:06:20,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-28 04:06:20,610 INFO L175 Difference]: Start difference. First operand has 337 places, 512 transitions, 7709 flow. Second operand 8 states and 145 transitions. [2024-06-28 04:06:20,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 546 transitions, 9375 flow [2024-06-28 04:06:21,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 546 transitions, 9185 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 04:06:21,721 INFO L231 Difference]: Finished difference. Result has 341 places, 520 transitions, 7958 flow [2024-06-28 04:06:21,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7523, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7958, PETRI_PLACES=341, PETRI_TRANSITIONS=520} [2024-06-28 04:06:21,722 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 300 predicate places. [2024-06-28 04:06:21,722 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 520 transitions, 7958 flow [2024-06-28 04:06:21,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:21,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:21,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:21,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 04:06:21,723 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:21,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:21,723 INFO L85 PathProgramCache]: Analyzing trace with hash -898160941, now seen corresponding path program 5 times [2024-06-28 04:06:21,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:21,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725284249] [2024-06-28 04:06:21,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:21,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:22,442 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 04:06:22,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:22,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725284249] [2024-06-28 04:06:22,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725284249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:22,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:22,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:06:22,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068365713] [2024-06-28 04:06:22,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:22,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:06:22,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:22,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:06:22,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:06:22,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:06:22,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 520 transitions, 7958 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:22,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:22,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:06:22,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:23,716 INFO L124 PetriNetUnfolderBase]: 2999/4619 cut-off events. [2024-06-28 04:06:23,716 INFO L125 PetriNetUnfolderBase]: For 313023/313029 co-relation queries the response was YES. [2024-06-28 04:06:23,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39394 conditions, 4619 events. 2999/4619 cut-off events. For 313023/313029 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 25279 event pairs, 496 based on Foata normal form. 10/4628 useless extension candidates. Maximal degree in co-relation 39239. Up to 4376 conditions per place. [2024-06-28 04:06:23,773 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 485 selfloop transitions, 45 changer transitions 0/534 dead transitions. [2024-06-28 04:06:23,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 534 transitions, 9092 flow [2024-06-28 04:06:23,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:06:23,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:06:23,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 04:06:23,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:06:23,774 INFO L175 Difference]: Start difference. First operand has 341 places, 520 transitions, 7958 flow. Second operand 7 states and 120 transitions. [2024-06-28 04:06:23,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 534 transitions, 9092 flow [2024-06-28 04:06:25,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 534 transitions, 8896 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-28 04:06:25,078 INFO L231 Difference]: Finished difference. Result has 343 places, 520 transitions, 7863 flow [2024-06-28 04:06:25,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7762, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7863, PETRI_PLACES=343, PETRI_TRANSITIONS=520} [2024-06-28 04:06:25,079 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 302 predicate places. [2024-06-28 04:06:25,079 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 520 transitions, 7863 flow [2024-06-28 04:06:25,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:25,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:25,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:25,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 04:06:25,079 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:25,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:25,080 INFO L85 PathProgramCache]: Analyzing trace with hash -905668273, now seen corresponding path program 4 times [2024-06-28 04:06:25,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:25,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768917833] [2024-06-28 04:06:25,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:25,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:25,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:25,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:25,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768917833] [2024-06-28 04:06:25,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768917833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:25,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:25,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:06:25,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167540376] [2024-06-28 04:06:25,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:25,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:06:25,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:25,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:06:25,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:06:26,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:06:26,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 520 transitions, 7863 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:26,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:26,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:06:26,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:27,197 INFO L124 PetriNetUnfolderBase]: 2996/4612 cut-off events. [2024-06-28 04:06:27,197 INFO L125 PetriNetUnfolderBase]: For 303857/303857 co-relation queries the response was YES. [2024-06-28 04:06:27,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38956 conditions, 4612 events. 2996/4612 cut-off events. For 303857/303857 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 25167 event pairs, 527 based on Foata normal form. 1/4612 useless extension candidates. Maximal degree in co-relation 38801. Up to 4129 conditions per place. [2024-06-28 04:06:27,251 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 396 selfloop transitions, 134 changer transitions 0/534 dead transitions. [2024-06-28 04:06:27,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 534 transitions, 8965 flow [2024-06-28 04:06:27,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:06:27,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:06:27,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-06-28 04:06:27,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4708333333333333 [2024-06-28 04:06:27,252 INFO L175 Difference]: Start difference. First operand has 343 places, 520 transitions, 7863 flow. Second operand 6 states and 113 transitions. [2024-06-28 04:06:27,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 534 transitions, 8965 flow [2024-06-28 04:06:28,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 534 transitions, 8828 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-28 04:06:28,481 INFO L231 Difference]: Finished difference. Result has 344 places, 520 transitions, 8055 flow [2024-06-28 04:06:28,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7726, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8055, PETRI_PLACES=344, PETRI_TRANSITIONS=520} [2024-06-28 04:06:28,482 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 303 predicate places. [2024-06-28 04:06:28,482 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 520 transitions, 8055 flow [2024-06-28 04:06:28,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:28,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:28,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:28,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 04:06:28,483 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:28,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:28,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1282026545, now seen corresponding path program 6 times [2024-06-28 04:06:28,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:28,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891068371] [2024-06-28 04:06:28,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:28,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:29,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:29,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:29,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891068371] [2024-06-28 04:06:29,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891068371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:29,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:29,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:06:29,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164136821] [2024-06-28 04:06:29,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:29,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:06:29,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:29,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:06:29,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:06:29,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:06:29,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 520 transitions, 8055 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:29,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:29,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:06:29,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:30,400 INFO L124 PetriNetUnfolderBase]: 2984/4613 cut-off events. [2024-06-28 04:06:30,401 INFO L125 PetriNetUnfolderBase]: For 310572/310578 co-relation queries the response was YES. [2024-06-28 04:06:30,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38985 conditions, 4613 events. 2984/4613 cut-off events. For 310572/310578 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 25416 event pairs, 486 based on Foata normal form. 10/4622 useless extension candidates. Maximal degree in co-relation 38829. Up to 4134 conditions per place. [2024-06-28 04:06:30,465 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 437 selfloop transitions, 106 changer transitions 0/547 dead transitions. [2024-06-28 04:06:30,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 547 transitions, 9297 flow [2024-06-28 04:06:30,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:06:30,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:06:30,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 04:06:30,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45625 [2024-06-28 04:06:30,466 INFO L175 Difference]: Start difference. First operand has 344 places, 520 transitions, 8055 flow. Second operand 8 states and 146 transitions. [2024-06-28 04:06:30,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 547 transitions, 9297 flow [2024-06-28 04:06:31,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 547 transitions, 8908 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 04:06:31,739 INFO L231 Difference]: Finished difference. Result has 346 places, 520 transitions, 7889 flow [2024-06-28 04:06:31,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7666, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7889, PETRI_PLACES=346, PETRI_TRANSITIONS=520} [2024-06-28 04:06:31,740 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 305 predicate places. [2024-06-28 04:06:31,740 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 520 transitions, 7889 flow [2024-06-28 04:06:31,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:31,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:31,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:31,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 04:06:31,740 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:31,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:31,741 INFO L85 PathProgramCache]: Analyzing trace with hash -566212511, now seen corresponding path program 1 times [2024-06-28 04:06:31,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:31,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612314938] [2024-06-28 04:06:31,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:31,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:32,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:32,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:32,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612314938] [2024-06-28 04:06:32,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612314938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:32,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:32,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:06:32,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376567129] [2024-06-28 04:06:32,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:32,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:06:32,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:32,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:06:32,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:06:32,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:06:32,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 520 transitions, 7889 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:32,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:32,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:06:32,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:33,948 INFO L124 PetriNetUnfolderBase]: 3020/4654 cut-off events. [2024-06-28 04:06:33,948 INFO L125 PetriNetUnfolderBase]: For 310762/310762 co-relation queries the response was YES. [2024-06-28 04:06:33,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38962 conditions, 4654 events. 3020/4654 cut-off events. For 310762/310762 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 25420 event pairs, 416 based on Foata normal form. 8/4661 useless extension candidates. Maximal degree in co-relation 38806. Up to 4175 conditions per place. [2024-06-28 04:06:34,012 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 477 selfloop transitions, 68 changer transitions 0/549 dead transitions. [2024-06-28 04:06:34,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 549 transitions, 9313 flow [2024-06-28 04:06:34,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:06:34,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:06:34,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 04:06:34,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446875 [2024-06-28 04:06:34,015 INFO L175 Difference]: Start difference. First operand has 346 places, 520 transitions, 7889 flow. Second operand 8 states and 143 transitions. [2024-06-28 04:06:34,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 549 transitions, 9313 flow [2024-06-28 04:06:35,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 549 transitions, 8926 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 04:06:35,098 INFO L231 Difference]: Finished difference. Result has 346 places, 523 transitions, 7679 flow [2024-06-28 04:06:35,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7504, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7679, PETRI_PLACES=346, PETRI_TRANSITIONS=523} [2024-06-28 04:06:35,099 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 305 predicate places. [2024-06-28 04:06:35,099 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 523 transitions, 7679 flow [2024-06-28 04:06:35,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:35,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:35,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:35,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 04:06:35,099 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:35,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:35,100 INFO L85 PathProgramCache]: Analyzing trace with hash -78213203, now seen corresponding path program 2 times [2024-06-28 04:06:35,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:35,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947714038] [2024-06-28 04:06:35,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:35,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:35,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:35,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:35,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947714038] [2024-06-28 04:06:35,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947714038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:35,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:35,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:06:35,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940570843] [2024-06-28 04:06:35,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:35,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:06:35,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:35,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:06:35,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:06:36,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:06:36,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 523 transitions, 7679 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:36,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:36,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:06:36,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:37,235 INFO L124 PetriNetUnfolderBase]: 3002/4634 cut-off events. [2024-06-28 04:06:37,235 INFO L125 PetriNetUnfolderBase]: For 292148/292148 co-relation queries the response was YES. [2024-06-28 04:06:37,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37818 conditions, 4634 events. 3002/4634 cut-off events. For 292148/292148 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 25340 event pairs, 402 based on Foata normal form. 8/4641 useless extension candidates. Maximal degree in co-relation 37662. Up to 4167 conditions per place. [2024-06-28 04:06:37,304 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 474 selfloop transitions, 68 changer transitions 0/546 dead transitions. [2024-06-28 04:06:37,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 546 transitions, 8931 flow [2024-06-28 04:06:37,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:06:37,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:06:37,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 04:06:37,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4607142857142857 [2024-06-28 04:06:37,305 INFO L175 Difference]: Start difference. First operand has 346 places, 523 transitions, 7679 flow. Second operand 7 states and 129 transitions. [2024-06-28 04:06:37,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 546 transitions, 8931 flow [2024-06-28 04:06:38,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 546 transitions, 8806 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 04:06:38,406 INFO L231 Difference]: Finished difference. Result has 349 places, 523 transitions, 7696 flow [2024-06-28 04:06:38,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7554, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7696, PETRI_PLACES=349, PETRI_TRANSITIONS=523} [2024-06-28 04:06:38,406 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 308 predicate places. [2024-06-28 04:06:38,406 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 523 transitions, 7696 flow [2024-06-28 04:06:38,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:38,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:38,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:38,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 04:06:38,407 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:38,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:38,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1903429149, now seen corresponding path program 7 times [2024-06-28 04:06:38,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:38,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223703159] [2024-06-28 04:06:38,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:38,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:39,091 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 04:06:39,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:39,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223703159] [2024-06-28 04:06:39,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223703159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:39,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:39,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:06:39,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009361461] [2024-06-28 04:06:39,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:39,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:06:39,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:39,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:06:39,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:06:39,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:06:39,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 523 transitions, 7696 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:39,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:39,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:06:39,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:40,429 INFO L124 PetriNetUnfolderBase]: 3116/4810 cut-off events. [2024-06-28 04:06:40,430 INFO L125 PetriNetUnfolderBase]: For 302394/302400 co-relation queries the response was YES. [2024-06-28 04:06:40,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39601 conditions, 4810 events. 3116/4810 cut-off events. For 302394/302400 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 26592 event pairs, 512 based on Foata normal form. 10/4819 useless extension candidates. Maximal degree in co-relation 39444. Up to 4263 conditions per place. [2024-06-28 04:06:40,499 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 429 selfloop transitions, 153 changer transitions 0/586 dead transitions. [2024-06-28 04:06:40,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 586 transitions, 9682 flow [2024-06-28 04:06:40,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:06:40,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:06:40,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-28 04:06:40,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 04:06:40,500 INFO L175 Difference]: Start difference. First operand has 349 places, 523 transitions, 7696 flow. Second operand 10 states and 175 transitions. [2024-06-28 04:06:40,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 586 transitions, 9682 flow [2024-06-28 04:06:41,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 586 transitions, 9536 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 04:06:41,568 INFO L231 Difference]: Finished difference. Result has 354 places, 554 transitions, 8439 flow [2024-06-28 04:06:41,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7552, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8439, PETRI_PLACES=354, PETRI_TRANSITIONS=554} [2024-06-28 04:06:41,569 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 313 predicate places. [2024-06-28 04:06:41,569 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 554 transitions, 8439 flow [2024-06-28 04:06:41,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:41,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:41,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:41,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 04:06:41,570 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:41,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:41,570 INFO L85 PathProgramCache]: Analyzing trace with hash -152475035, now seen corresponding path program 8 times [2024-06-28 04:06:41,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:41,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782349548] [2024-06-28 04:06:41,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:41,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:42,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:42,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:42,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782349548] [2024-06-28 04:06:42,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782349548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:42,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:42,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:06:42,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799480325] [2024-06-28 04:06:42,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:42,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:06:42,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:42,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:06:42,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:06:42,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:06:42,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 554 transitions, 8439 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:42,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:42,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:06:42,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:43,585 INFO L124 PetriNetUnfolderBase]: 3136/4840 cut-off events. [2024-06-28 04:06:43,585 INFO L125 PetriNetUnfolderBase]: For 307619/307625 co-relation queries the response was YES. [2024-06-28 04:06:43,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40367 conditions, 4840 events. 3136/4840 cut-off events. For 307619/307625 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 26799 event pairs, 514 based on Foata normal form. 10/4849 useless extension candidates. Maximal degree in co-relation 40209. Up to 4323 conditions per place. [2024-06-28 04:06:43,654 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 418 selfloop transitions, 156 changer transitions 0/578 dead transitions. [2024-06-28 04:06:43,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 578 transitions, 9753 flow [2024-06-28 04:06:43,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:06:43,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:06:43,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 04:06:43,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175 [2024-06-28 04:06:43,655 INFO L175 Difference]: Start difference. First operand has 354 places, 554 transitions, 8439 flow. Second operand 10 states and 167 transitions. [2024-06-28 04:06:43,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 578 transitions, 9753 flow [2024-06-28 04:06:44,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 578 transitions, 9482 flow, removed 98 selfloop flow, removed 3 redundant places. [2024-06-28 04:06:44,688 INFO L231 Difference]: Finished difference. Result has 361 places, 557 transitions, 8577 flow [2024-06-28 04:06:44,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8202, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8577, PETRI_PLACES=361, PETRI_TRANSITIONS=557} [2024-06-28 04:06:44,688 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 320 predicate places. [2024-06-28 04:06:44,689 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 557 transitions, 8577 flow [2024-06-28 04:06:44,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:44,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:44,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:44,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 04:06:44,689 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:44,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:44,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1018073243, now seen corresponding path program 9 times [2024-06-28 04:06:44,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:44,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35030056] [2024-06-28 04:06:44,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:44,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:45,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:45,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:45,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35030056] [2024-06-28 04:06:45,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35030056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:45,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:45,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:06:45,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558586429] [2024-06-28 04:06:45,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:45,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:06:45,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:45,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:06:45,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:06:45,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:06:45,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 557 transitions, 8577 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:45,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:45,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:06:45,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:46,685 INFO L124 PetriNetUnfolderBase]: 3188/4910 cut-off events. [2024-06-28 04:06:46,685 INFO L125 PetriNetUnfolderBase]: For 324425/324431 co-relation queries the response was YES. [2024-06-28 04:06:46,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41431 conditions, 4910 events. 3188/4910 cut-off events. For 324425/324431 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 27165 event pairs, 524 based on Foata normal form. 10/4919 useless extension candidates. Maximal degree in co-relation 41271. Up to 4235 conditions per place. [2024-06-28 04:06:46,757 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 441 selfloop transitions, 160 changer transitions 0/605 dead transitions. [2024-06-28 04:06:46,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 605 transitions, 10441 flow [2024-06-28 04:06:46,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:06:46,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:06:46,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-28 04:06:46,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43863636363636366 [2024-06-28 04:06:46,758 INFO L175 Difference]: Start difference. First operand has 361 places, 557 transitions, 8577 flow. Second operand 11 states and 193 transitions. [2024-06-28 04:06:46,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 605 transitions, 10441 flow [2024-06-28 04:06:48,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 605 transitions, 10088 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 04:06:48,108 INFO L231 Difference]: Finished difference. Result has 364 places, 563 transitions, 8729 flow [2024-06-28 04:06:48,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8228, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8729, PETRI_PLACES=364, PETRI_TRANSITIONS=563} [2024-06-28 04:06:48,109 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 323 predicate places. [2024-06-28 04:06:48,109 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 563 transitions, 8729 flow [2024-06-28 04:06:48,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:48,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:48,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:48,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 04:06:48,110 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:48,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:48,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1014354173, now seen corresponding path program 10 times [2024-06-28 04:06:48,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:48,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277436218] [2024-06-28 04:06:48,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:48,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:48,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:48,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:48,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277436218] [2024-06-28 04:06:48,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277436218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:48,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:48,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:06:48,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385546301] [2024-06-28 04:06:48,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:48,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:06:48,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:48,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:06:48,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:06:48,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:06:48,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 563 transitions, 8729 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:48,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:48,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:06:48,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:50,240 INFO L124 PetriNetUnfolderBase]: 3250/5010 cut-off events. [2024-06-28 04:06:50,240 INFO L125 PetriNetUnfolderBase]: For 339685/339691 co-relation queries the response was YES. [2024-06-28 04:06:50,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42901 conditions, 5010 events. 3250/5010 cut-off events. For 339685/339691 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 27863 event pairs, 526 based on Foata normal form. 10/5019 useless extension candidates. Maximal degree in co-relation 42741. Up to 4591 conditions per place. [2024-06-28 04:06:50,314 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 513 selfloop transitions, 91 changer transitions 0/608 dead transitions. [2024-06-28 04:06:50,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 608 transitions, 10526 flow [2024-06-28 04:06:50,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:06:50,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:06:50,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-28 04:06:50,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 04:06:50,315 INFO L175 Difference]: Start difference. First operand has 364 places, 563 transitions, 8729 flow. Second operand 11 states and 187 transitions. [2024-06-28 04:06:50,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 608 transitions, 10526 flow [2024-06-28 04:06:51,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 608 transitions, 9820 flow, removed 134 selfloop flow, removed 11 redundant places. [2024-06-28 04:06:51,747 INFO L231 Difference]: Finished difference. Result has 365 places, 574 transitions, 8510 flow [2024-06-28 04:06:51,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8120, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8510, PETRI_PLACES=365, PETRI_TRANSITIONS=574} [2024-06-28 04:06:51,747 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 324 predicate places. [2024-06-28 04:06:51,748 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 574 transitions, 8510 flow [2024-06-28 04:06:51,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:51,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:51,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:51,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 04:06:51,748 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:51,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:51,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1408433297, now seen corresponding path program 11 times [2024-06-28 04:06:51,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:51,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806731295] [2024-06-28 04:06:51,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:51,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:52,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:52,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:52,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806731295] [2024-06-28 04:06:52,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806731295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:52,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:52,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:06:52,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736747386] [2024-06-28 04:06:52,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:52,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:06:52,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:52,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:06:52,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:06:52,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:06:52,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 574 transitions, 8510 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:52,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:52,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:06:52,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:53,908 INFO L124 PetriNetUnfolderBase]: 3238/4996 cut-off events. [2024-06-28 04:06:53,909 INFO L125 PetriNetUnfolderBase]: For 329541/329547 co-relation queries the response was YES. [2024-06-28 04:06:53,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41151 conditions, 4996 events. 3238/4996 cut-off events. For 329541/329547 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 27816 event pairs, 530 based on Foata normal form. 10/5005 useless extension candidates. Maximal degree in co-relation 40994. Up to 4583 conditions per place. [2024-06-28 04:06:53,974 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 513 selfloop transitions, 91 changer transitions 0/608 dead transitions. [2024-06-28 04:06:53,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 608 transitions, 9902 flow [2024-06-28 04:06:53,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:06:53,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:06:53,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 199 transitions. [2024-06-28 04:06:53,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41458333333333336 [2024-06-28 04:06:53,975 INFO L175 Difference]: Start difference. First operand has 365 places, 574 transitions, 8510 flow. Second operand 12 states and 199 transitions. [2024-06-28 04:06:53,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 608 transitions, 9902 flow [2024-06-28 04:06:55,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 608 transitions, 9726 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 04:06:55,567 INFO L231 Difference]: Finished difference. Result has 370 places, 574 transitions, 8522 flow [2024-06-28 04:06:55,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8334, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8522, PETRI_PLACES=370, PETRI_TRANSITIONS=574} [2024-06-28 04:06:55,568 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 329 predicate places. [2024-06-28 04:06:55,568 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 574 transitions, 8522 flow [2024-06-28 04:06:55,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:55,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:55,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:55,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 04:06:55,569 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:55,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:55,569 INFO L85 PathProgramCache]: Analyzing trace with hash 2106573861, now seen corresponding path program 12 times [2024-06-28 04:06:55,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:55,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643381739] [2024-06-28 04:06:55,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:55,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:56,376 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 04:06:56,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:56,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643381739] [2024-06-28 04:06:56,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643381739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:56,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:56,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:06:56,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997269662] [2024-06-28 04:06:56,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:56,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:06:56,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:56,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:06:56,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:06:56,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:06:56,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 574 transitions, 8522 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:56,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:56,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:06:56,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:57,572 INFO L124 PetriNetUnfolderBase]: 3282/5047 cut-off events. [2024-06-28 04:06:57,573 INFO L125 PetriNetUnfolderBase]: For 346195/346201 co-relation queries the response was YES. [2024-06-28 04:06:57,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42179 conditions, 5047 events. 3282/5047 cut-off events. For 346195/346201 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 27985 event pairs, 484 based on Foata normal form. 10/5056 useless extension candidates. Maximal degree in co-relation 42020. Up to 3850 conditions per place. [2024-06-28 04:06:57,643 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 362 selfloop transitions, 241 changer transitions 0/607 dead transitions. [2024-06-28 04:06:57,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 607 transitions, 10178 flow [2024-06-28 04:06:57,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:06:57,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:06:57,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 04:06:57,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-28 04:06:57,645 INFO L175 Difference]: Start difference. First operand has 370 places, 574 transitions, 8522 flow. Second operand 9 states and 164 transitions. [2024-06-28 04:06:57,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 607 transitions, 10178 flow [2024-06-28 04:06:59,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 607 transitions, 10014 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 04:06:59,206 INFO L231 Difference]: Finished difference. Result has 370 places, 580 transitions, 9020 flow [2024-06-28 04:06:59,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8358, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9020, PETRI_PLACES=370, PETRI_TRANSITIONS=580} [2024-06-28 04:06:59,207 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 329 predicate places. [2024-06-28 04:06:59,207 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 580 transitions, 9020 flow [2024-06-28 04:06:59,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:59,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:59,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:59,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 04:06:59,207 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:59,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:59,208 INFO L85 PathProgramCache]: Analyzing trace with hash -59224447, now seen corresponding path program 13 times [2024-06-28 04:06:59,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:59,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466333409] [2024-06-28 04:06:59,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:59,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:59,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:59,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:59,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466333409] [2024-06-28 04:06:59,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466333409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:59,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:59,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:06:59,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731855916] [2024-06-28 04:06:59,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:59,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:06:59,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:59,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:06:59,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:07:00,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:07:00,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 580 transitions, 9020 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:00,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:00,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:07:00,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:01,394 INFO L124 PetriNetUnfolderBase]: 3366/5173 cut-off events. [2024-06-28 04:07:01,394 INFO L125 PetriNetUnfolderBase]: For 382409/382415 co-relation queries the response was YES. [2024-06-28 04:07:01,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44746 conditions, 5173 events. 3366/5173 cut-off events. For 382409/382415 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 28815 event pairs, 548 based on Foata normal form. 10/5182 useless extension candidates. Maximal degree in co-relation 44586. Up to 4727 conditions per place. [2024-06-28 04:07:01,469 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 501 selfloop transitions, 114 changer transitions 0/619 dead transitions. [2024-06-28 04:07:01,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 619 transitions, 10856 flow [2024-06-28 04:07:01,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 04:07:01,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 04:07:01,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 213 transitions. [2024-06-28 04:07:01,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096153846153846 [2024-06-28 04:07:01,470 INFO L175 Difference]: Start difference. First operand has 370 places, 580 transitions, 9020 flow. Second operand 13 states and 213 transitions. [2024-06-28 04:07:01,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 619 transitions, 10856 flow [2024-06-28 04:07:02,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 619 transitions, 10588 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-28 04:07:02,817 INFO L231 Difference]: Finished difference. Result has 379 places, 589 transitions, 9195 flow [2024-06-28 04:07:02,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8752, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9195, PETRI_PLACES=379, PETRI_TRANSITIONS=589} [2024-06-28 04:07:02,829 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 338 predicate places. [2024-06-28 04:07:02,829 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 589 transitions, 9195 flow [2024-06-28 04:07:02,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:02,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:02,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:02,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 04:07:02,829 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:02,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:02,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1377871055, now seen corresponding path program 14 times [2024-06-28 04:07:02,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:02,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199929603] [2024-06-28 04:07:02,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:02,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:03,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:07:03,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:03,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199929603] [2024-06-28 04:07:03,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199929603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:03,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:03,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:07:03,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188158124] [2024-06-28 04:07:03,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:03,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:07:03,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:03,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:07:03,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:07:03,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:07:03,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 589 transitions, 9195 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:03,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:03,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:07:03,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:05,180 INFO L124 PetriNetUnfolderBase]: 3354/5157 cut-off events. [2024-06-28 04:07:05,180 INFO L125 PetriNetUnfolderBase]: For 375517/375523 co-relation queries the response was YES. [2024-06-28 04:07:05,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44324 conditions, 5157 events. 3354/5157 cut-off events. For 375517/375523 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 28788 event pairs, 542 based on Foata normal form. 10/5166 useless extension candidates. Maximal degree in co-relation 44161. Up to 4719 conditions per place. [2024-06-28 04:07:05,265 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 495 selfloop transitions, 114 changer transitions 0/613 dead transitions. [2024-06-28 04:07:05,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 613 transitions, 10661 flow [2024-06-28 04:07:05,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:07:05,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:07:05,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-28 04:07:05,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4159090909090909 [2024-06-28 04:07:05,266 INFO L175 Difference]: Start difference. First operand has 379 places, 589 transitions, 9195 flow. Second operand 11 states and 183 transitions. [2024-06-28 04:07:05,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 613 transitions, 10661 flow [2024-06-28 04:07:06,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 613 transitions, 10400 flow, removed 49 selfloop flow, removed 8 redundant places. [2024-06-28 04:07:06,944 INFO L231 Difference]: Finished difference. Result has 382 places, 589 transitions, 9168 flow [2024-06-28 04:07:06,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8934, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9168, PETRI_PLACES=382, PETRI_TRANSITIONS=589} [2024-06-28 04:07:06,945 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 341 predicate places. [2024-06-28 04:07:06,945 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 589 transitions, 9168 flow [2024-06-28 04:07:06,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:06,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:06,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:06,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 04:07:06,945 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:06,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:06,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1390995215, now seen corresponding path program 15 times [2024-06-28 04:07:06,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:06,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606616809] [2024-06-28 04:07:06,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:06,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:07,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:07:07,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:07,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606616809] [2024-06-28 04:07:07,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606616809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:07,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:07,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:07:07,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672276345] [2024-06-28 04:07:07,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:07,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:07:07,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:07,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:07:07,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:07:07,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:07:07,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 589 transitions, 9168 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:07,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:07,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:07:07,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:09,085 INFO L124 PetriNetUnfolderBase]: 3438/5281 cut-off events. [2024-06-28 04:07:09,085 INFO L125 PetriNetUnfolderBase]: For 408139/408145 co-relation queries the response was YES. [2024-06-28 04:07:09,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46194 conditions, 5281 events. 3438/5281 cut-off events. For 408139/408145 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 29604 event pairs, 500 based on Foata normal form. 10/5290 useless extension candidates. Maximal degree in co-relation 46030. Up to 4419 conditions per place. [2024-06-28 04:07:09,166 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 435 selfloop transitions, 188 changer transitions 0/627 dead transitions. [2024-06-28 04:07:09,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 627 transitions, 11104 flow [2024-06-28 04:07:09,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:07:09,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:07:09,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-28 04:07:09,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340909090909091 [2024-06-28 04:07:09,169 INFO L175 Difference]: Start difference. First operand has 382 places, 589 transitions, 9168 flow. Second operand 11 states and 191 transitions. [2024-06-28 04:07:09,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 627 transitions, 11104 flow [2024-06-28 04:07:11,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 627 transitions, 10876 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 04:07:11,257 INFO L231 Difference]: Finished difference. Result has 383 places, 598 transitions, 9568 flow [2024-06-28 04:07:11,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8940, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9568, PETRI_PLACES=383, PETRI_TRANSITIONS=598} [2024-06-28 04:07:11,260 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 342 predicate places. [2024-06-28 04:07:11,260 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 598 transitions, 9568 flow [2024-06-28 04:07:11,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:11,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:11,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:11,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 04:07:11,260 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:11,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:11,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1390758065, now seen corresponding path program 16 times [2024-06-28 04:07:11,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:11,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841111564] [2024-06-28 04:07:11,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:11,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:12,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:07:12,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:12,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841111564] [2024-06-28 04:07:12,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841111564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:12,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:12,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:07:12,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961123413] [2024-06-28 04:07:12,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:12,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:07:12,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:12,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:07:12,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:07:12,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:07:12,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 598 transitions, 9568 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:12,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:12,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:07:12,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:13,714 INFO L124 PetriNetUnfolderBase]: 3426/5263 cut-off events. [2024-06-28 04:07:13,715 INFO L125 PetriNetUnfolderBase]: For 408855/408861 co-relation queries the response was YES. [2024-06-28 04:07:13,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46307 conditions, 5263 events. 3426/5263 cut-off events. For 408855/408861 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 29480 event pairs, 496 based on Foata normal form. 10/5272 useless extension candidates. Maximal degree in co-relation 46142. Up to 4411 conditions per place. [2024-06-28 04:07:13,784 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 434 selfloop transitions, 192 changer transitions 0/630 dead transitions. [2024-06-28 04:07:13,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 630 transitions, 11298 flow [2024-06-28 04:07:13,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 04:07:13,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 04:07:13,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 216 transitions. [2024-06-28 04:07:13,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153846153846154 [2024-06-28 04:07:13,785 INFO L175 Difference]: Start difference. First operand has 383 places, 598 transitions, 9568 flow. Second operand 13 states and 216 transitions. [2024-06-28 04:07:13,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 630 transitions, 11298 flow [2024-06-28 04:07:15,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 630 transitions, 10985 flow, removed 65 selfloop flow, removed 6 redundant places. [2024-06-28 04:07:15,906 INFO L231 Difference]: Finished difference. Result has 390 places, 598 transitions, 9645 flow [2024-06-28 04:07:15,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9255, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9645, PETRI_PLACES=390, PETRI_TRANSITIONS=598} [2024-06-28 04:07:15,906 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 349 predicate places. [2024-06-28 04:07:15,907 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 598 transitions, 9645 flow [2024-06-28 04:07:15,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:15,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:15,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:15,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 04:07:15,907 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:15,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:15,908 INFO L85 PathProgramCache]: Analyzing trace with hash 2025275871, now seen corresponding path program 17 times [2024-06-28 04:07:15,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:15,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261379251] [2024-06-28 04:07:15,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:15,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:16,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:07:16,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:16,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261379251] [2024-06-28 04:07:16,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261379251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:16,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:16,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:07:16,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60350100] [2024-06-28 04:07:16,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:16,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:07:16,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:16,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:07:16,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:07:16,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:07:16,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 598 transitions, 9645 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:16,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:16,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:07:16,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:17,962 INFO L124 PetriNetUnfolderBase]: 3414/5247 cut-off events. [2024-06-28 04:07:17,962 INFO L125 PetriNetUnfolderBase]: For 405256/405262 co-relation queries the response was YES. [2024-06-28 04:07:18,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46290 conditions, 5247 events. 3414/5247 cut-off events. For 405256/405262 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 29378 event pairs, 496 based on Foata normal form. 10/5256 useless extension candidates. Maximal degree in co-relation 46123. Up to 4403 conditions per place. [2024-06-28 04:07:18,171 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 439 selfloop transitions, 181 changer transitions 0/624 dead transitions. [2024-06-28 04:07:18,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 624 transitions, 11189 flow [2024-06-28 04:07:18,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:07:18,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:07:18,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 04:07:18,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 04:07:18,172 INFO L175 Difference]: Start difference. First operand has 390 places, 598 transitions, 9645 flow. Second operand 9 states and 162 transitions. [2024-06-28 04:07:18,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 624 transitions, 11189 flow [2024-06-28 04:07:20,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 624 transitions, 10768 flow, removed 37 selfloop flow, removed 10 redundant places. [2024-06-28 04:07:20,134 INFO L231 Difference]: Finished difference. Result has 389 places, 598 transitions, 9592 flow [2024-06-28 04:07:20,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9224, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9592, PETRI_PLACES=389, PETRI_TRANSITIONS=598} [2024-06-28 04:07:20,134 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 348 predicate places. [2024-06-28 04:07:20,135 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 598 transitions, 9592 flow [2024-06-28 04:07:20,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:20,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:20,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:20,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 04:07:20,135 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:20,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:20,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1385217125, now seen corresponding path program 18 times [2024-06-28 04:07:20,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:20,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391256397] [2024-06-28 04:07:20,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:20,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:20,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:07:20,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:20,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391256397] [2024-06-28 04:07:20,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391256397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:20,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:20,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:07:20,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541475334] [2024-06-28 04:07:20,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:20,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:07:20,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:20,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:07:20,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:07:21,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:07:21,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 598 transitions, 9592 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:21,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:21,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:07:21,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:22,346 INFO L124 PetriNetUnfolderBase]: 3402/5219 cut-off events. [2024-06-28 04:07:22,346 INFO L125 PetriNetUnfolderBase]: For 402281/402287 co-relation queries the response was YES. [2024-06-28 04:07:22,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45779 conditions, 5219 events. 3402/5219 cut-off events. For 402281/402287 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 29102 event pairs, 562 based on Foata normal form. 10/5228 useless extension candidates. Maximal degree in co-relation 45611. Up to 4847 conditions per place. [2024-06-28 04:07:22,429 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 506 selfloop transitions, 106 changer transitions 0/616 dead transitions. [2024-06-28 04:07:22,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 616 transitions, 10888 flow [2024-06-28 04:07:22,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:07:22,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:07:22,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 04:07:22,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075 [2024-06-28 04:07:22,430 INFO L175 Difference]: Start difference. First operand has 389 places, 598 transitions, 9592 flow. Second operand 10 states and 163 transitions. [2024-06-28 04:07:22,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 616 transitions, 10888 flow [2024-06-28 04:07:24,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 616 transitions, 10427 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 04:07:24,457 INFO L231 Difference]: Finished difference. Result has 390 places, 598 transitions, 9350 flow [2024-06-28 04:07:24,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9131, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9350, PETRI_PLACES=390, PETRI_TRANSITIONS=598} [2024-06-28 04:07:24,458 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 349 predicate places. [2024-06-28 04:07:24,458 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 598 transitions, 9350 flow [2024-06-28 04:07:24,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:24,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:24,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:24,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 04:07:24,459 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:24,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:24,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1699635041, now seen corresponding path program 19 times [2024-06-28 04:07:24,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:24,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539702] [2024-06-28 04:07:24,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:24,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:25,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:07:25,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:25,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539702] [2024-06-28 04:07:25,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:25,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:25,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:07:25,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350124242] [2024-06-28 04:07:25,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:25,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:07:25,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:25,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:07:25,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:07:25,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:07:25,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 598 transitions, 9350 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:25,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:25,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:07:25,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:26,570 INFO L124 PetriNetUnfolderBase]: 3422/5253 cut-off events. [2024-06-28 04:07:26,570 INFO L125 PetriNetUnfolderBase]: For 409250/409256 co-relation queries the response was YES. [2024-06-28 04:07:26,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45594 conditions, 5253 events. 3422/5253 cut-off events. For 409250/409256 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 29359 event pairs, 558 based on Foata normal form. 10/5262 useless extension candidates. Maximal degree in co-relation 45425. Up to 4761 conditions per place. [2024-06-28 04:07:26,655 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 528 selfloop transitions, 95 changer transitions 0/627 dead transitions. [2024-06-28 04:07:26,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 627 transitions, 10952 flow [2024-06-28 04:07:26,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:07:26,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:07:26,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 04:07:26,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-28 04:07:26,656 INFO L175 Difference]: Start difference. First operand has 390 places, 598 transitions, 9350 flow. Second operand 8 states and 145 transitions. [2024-06-28 04:07:26,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 627 transitions, 10952 flow [2024-06-28 04:07:28,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 627 transitions, 10706 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 04:07:28,759 INFO L231 Difference]: Finished difference. Result has 388 places, 601 transitions, 9368 flow [2024-06-28 04:07:28,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9104, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9368, PETRI_PLACES=388, PETRI_TRANSITIONS=601} [2024-06-28 04:07:28,760 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 347 predicate places. [2024-06-28 04:07:28,760 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 601 transitions, 9368 flow [2024-06-28 04:07:28,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:28,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:28,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:28,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 04:07:28,761 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:28,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:28,761 INFO L85 PathProgramCache]: Analyzing trace with hash -2108730550, now seen corresponding path program 2 times [2024-06-28 04:07:28,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:28,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872680432] [2024-06-28 04:07:28,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:28,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:29,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:07:29,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:29,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872680432] [2024-06-28 04:07:29,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872680432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:29,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:29,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:07:29,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181384353] [2024-06-28 04:07:29,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:29,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:07:29,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:29,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:07:29,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:07:29,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:07:29,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 601 transitions, 9368 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:29,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:29,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:07:29,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:30,922 INFO L124 PetriNetUnfolderBase]: 3429/5262 cut-off events. [2024-06-28 04:07:30,922 INFO L125 PetriNetUnfolderBase]: For 413805/413805 co-relation queries the response was YES. [2024-06-28 04:07:30,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45801 conditions, 5262 events. 3429/5262 cut-off events. For 413805/413805 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 29419 event pairs, 571 based on Foata normal form. 3/5264 useless extension candidates. Maximal degree in co-relation 45631. Up to 4917 conditions per place. [2024-06-28 04:07:31,002 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 546 selfloop transitions, 68 changer transitions 0/618 dead transitions. [2024-06-28 04:07:31,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 618 transitions, 10764 flow [2024-06-28 04:07:31,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:07:31,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:07:31,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-28 04:07:31,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43214285714285716 [2024-06-28 04:07:31,004 INFO L175 Difference]: Start difference. First operand has 388 places, 601 transitions, 9368 flow. Second operand 7 states and 121 transitions. [2024-06-28 04:07:31,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 618 transitions, 10764 flow [2024-06-28 04:07:33,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 618 transitions, 10400 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-28 04:07:33,102 INFO L231 Difference]: Finished difference. Result has 388 places, 604 transitions, 9242 flow [2024-06-28 04:07:33,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9004, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9242, PETRI_PLACES=388, PETRI_TRANSITIONS=604} [2024-06-28 04:07:33,103 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 347 predicate places. [2024-06-28 04:07:33,103 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 604 transitions, 9242 flow [2024-06-28 04:07:33,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:33,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:33,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:33,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 04:07:33,104 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:33,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:33,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1706981111, now seen corresponding path program 20 times [2024-06-28 04:07:33,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:33,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177043579] [2024-06-28 04:07:33,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:33,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:33,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:07:33,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:33,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177043579] [2024-06-28 04:07:33,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177043579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:33,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:33,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:07:33,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572833460] [2024-06-28 04:07:33,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:33,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:07:33,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:33,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:07:33,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:07:33,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:07:33,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 604 transitions, 9242 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:33,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:33,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:07:33,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:35,226 INFO L124 PetriNetUnfolderBase]: 3417/5257 cut-off events. [2024-06-28 04:07:35,227 INFO L125 PetriNetUnfolderBase]: For 413077/413083 co-relation queries the response was YES. [2024-06-28 04:07:35,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45214 conditions, 5257 events. 3417/5257 cut-off events. For 413077/413083 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 29485 event pairs, 556 based on Foata normal form. 10/5266 useless extension candidates. Maximal degree in co-relation 45045. Up to 4823 conditions per place. [2024-06-28 04:07:35,308 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 526 selfloop transitions, 98 changer transitions 0/628 dead transitions. [2024-06-28 04:07:35,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 628 transitions, 10594 flow [2024-06-28 04:07:35,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:07:35,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:07:35,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 04:07:35,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-28 04:07:35,310 INFO L175 Difference]: Start difference. First operand has 388 places, 604 transitions, 9242 flow. Second operand 8 states and 145 transitions. [2024-06-28 04:07:35,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 628 transitions, 10594 flow [2024-06-28 04:07:37,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 628 transitions, 10352 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-28 04:07:37,267 INFO L231 Difference]: Finished difference. Result has 390 places, 604 transitions, 9203 flow [2024-06-28 04:07:37,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9000, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9203, PETRI_PLACES=390, PETRI_TRANSITIONS=604} [2024-06-28 04:07:37,268 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 349 predicate places. [2024-06-28 04:07:37,268 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 604 transitions, 9203 flow [2024-06-28 04:07:37,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:37,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:37,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:37,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 04:07:37,268 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:37,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:37,269 INFO L85 PathProgramCache]: Analyzing trace with hash -840089115, now seen corresponding path program 21 times [2024-06-28 04:07:37,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:37,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701969237] [2024-06-28 04:07:37,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:37,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:37,915 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 04:07:37,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:37,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701969237] [2024-06-28 04:07:37,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701969237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:37,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:37,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:07:37,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646441403] [2024-06-28 04:07:37,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:37,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:07:37,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:37,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:07:37,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:07:38,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:07:38,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 604 transitions, 9203 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:38,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:38,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:07:38,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:39,310 INFO L124 PetriNetUnfolderBase]: 3437/5283 cut-off events. [2024-06-28 04:07:39,310 INFO L125 PetriNetUnfolderBase]: For 413094/413100 co-relation queries the response was YES. [2024-06-28 04:07:39,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45371 conditions, 5283 events. 3437/5283 cut-off events. For 413094/413100 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 29657 event pairs, 520 based on Foata normal form. 10/5292 useless extension candidates. Maximal degree in co-relation 45202. Up to 4497 conditions per place. [2024-06-28 04:07:39,382 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 476 selfloop transitions, 154 changer transitions 0/634 dead transitions. [2024-06-28 04:07:39,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 634 transitions, 11005 flow [2024-06-28 04:07:39,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:07:39,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:07:39,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 04:07:39,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 04:07:39,383 INFO L175 Difference]: Start difference. First operand has 390 places, 604 transitions, 9203 flow. Second operand 8 states and 150 transitions. [2024-06-28 04:07:39,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 634 transitions, 11005 flow [2024-06-28 04:07:41,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 634 transitions, 10689 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 04:07:41,521 INFO L231 Difference]: Finished difference. Result has 390 places, 607 transitions, 9287 flow [2024-06-28 04:07:41,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8887, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9287, PETRI_PLACES=390, PETRI_TRANSITIONS=607} [2024-06-28 04:07:41,522 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 349 predicate places. [2024-06-28 04:07:41,522 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 607 transitions, 9287 flow [2024-06-28 04:07:41,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:41,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:41,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:41,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 04:07:41,523 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:41,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:41,523 INFO L85 PathProgramCache]: Analyzing trace with hash -2103016630, now seen corresponding path program 3 times [2024-06-28 04:07:41,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:41,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302412321] [2024-06-28 04:07:41,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:41,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:42,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:07:42,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:42,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302412321] [2024-06-28 04:07:42,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302412321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:42,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:42,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:07:42,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194470754] [2024-06-28 04:07:42,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:42,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:07:42,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:42,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:07:42,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:07:42,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:07:42,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 607 transitions, 9287 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:42,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:42,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:07:42,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:43,726 INFO L124 PetriNetUnfolderBase]: 3431/5274 cut-off events. [2024-06-28 04:07:43,726 INFO L125 PetriNetUnfolderBase]: For 411185/411185 co-relation queries the response was YES. [2024-06-28 04:07:43,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45440 conditions, 5274 events. 3431/5274 cut-off events. For 411185/411185 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 29583 event pairs, 556 based on Foata normal form. 2/5275 useless extension candidates. Maximal degree in co-relation 45270. Up to 4848 conditions per place. [2024-06-28 04:07:43,791 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 531 selfloop transitions, 90 changer transitions 0/625 dead transitions. [2024-06-28 04:07:43,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 625 transitions, 10711 flow [2024-06-28 04:07:43,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:07:43,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:07:43,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 04:07:43,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-06-28 04:07:43,792 INFO L175 Difference]: Start difference. First operand has 390 places, 607 transitions, 9287 flow. Second operand 7 states and 122 transitions. [2024-06-28 04:07:43,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 625 transitions, 10711 flow [2024-06-28 04:07:45,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 625 transitions, 10062 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-28 04:07:45,954 INFO L231 Difference]: Finished difference. Result has 390 places, 610 transitions, 8926 flow [2024-06-28 04:07:45,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8638, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8926, PETRI_PLACES=390, PETRI_TRANSITIONS=610} [2024-06-28 04:07:45,954 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 349 predicate places. [2024-06-28 04:07:45,954 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 610 transitions, 8926 flow [2024-06-28 04:07:45,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:45,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:45,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:45,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 04:07:45,955 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:45,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:45,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1757872949, now seen corresponding path program 22 times [2024-06-28 04:07:45,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:45,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678226437] [2024-06-28 04:07:45,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:45,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:45,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:46,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:07:46,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:46,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678226437] [2024-06-28 04:07:46,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678226437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:46,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:46,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:07:46,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224419086] [2024-06-28 04:07:46,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:46,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:07:46,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:46,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:07:46,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:07:46,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:07:46,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 610 transitions, 8926 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:46,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:46,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:07:46,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:48,030 INFO L124 PetriNetUnfolderBase]: 3451/5305 cut-off events. [2024-06-28 04:07:48,030 INFO L125 PetriNetUnfolderBase]: For 424152/424158 co-relation queries the response was YES. [2024-06-28 04:07:48,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44760 conditions, 5305 events. 3451/5305 cut-off events. For 424152/424158 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 29773 event pairs, 567 based on Foata normal form. 10/5314 useless extension candidates. Maximal degree in co-relation 44591. Up to 5048 conditions per place. [2024-06-28 04:07:48,111 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 585 selfloop transitions, 39 changer transitions 0/628 dead transitions. [2024-06-28 04:07:48,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 628 transitions, 10330 flow [2024-06-28 04:07:48,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:07:48,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:07:48,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 04:07:48,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-28 04:07:48,112 INFO L175 Difference]: Start difference. First operand has 390 places, 610 transitions, 8926 flow. Second operand 8 states and 131 transitions. [2024-06-28 04:07:48,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 628 transitions, 10330 flow [2024-06-28 04:07:50,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 628 transitions, 10076 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-28 04:07:50,008 INFO L231 Difference]: Finished difference. Result has 392 places, 613 transitions, 8842 flow [2024-06-28 04:07:50,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8672, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8842, PETRI_PLACES=392, PETRI_TRANSITIONS=613} [2024-06-28 04:07:50,009 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 351 predicate places. [2024-06-28 04:07:50,009 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 613 transitions, 8842 flow [2024-06-28 04:07:50,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:50,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:50,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:50,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 04:07:50,009 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:50,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:50,010 INFO L85 PathProgramCache]: Analyzing trace with hash 549817375, now seen corresponding path program 23 times [2024-06-28 04:07:50,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:50,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121170440] [2024-06-28 04:07:50,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:50,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:50,625 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 04:07:50,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:50,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121170440] [2024-06-28 04:07:50,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121170440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:50,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:50,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:07:50,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617424391] [2024-06-28 04:07:50,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:50,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:07:50,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:50,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:07:50,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:07:50,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:07:50,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 613 transitions, 8842 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:50,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:50,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:07:50,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:51,979 INFO L124 PetriNetUnfolderBase]: 3503/5383 cut-off events. [2024-06-28 04:07:51,979 INFO L125 PetriNetUnfolderBase]: For 438291/438297 co-relation queries the response was YES. [2024-06-28 04:07:52,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45576 conditions, 5383 events. 3503/5383 cut-off events. For 438291/438297 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 30311 event pairs, 571 based on Foata normal form. 10/5392 useless extension candidates. Maximal degree in co-relation 45407. Up to 4990 conditions per place. [2024-06-28 04:07:52,061 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 575 selfloop transitions, 58 changer transitions 0/637 dead transitions. [2024-06-28 04:07:52,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 637 transitions, 10540 flow [2024-06-28 04:07:52,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:07:52,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:07:52,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 04:07:52,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-28 04:07:52,062 INFO L175 Difference]: Start difference. First operand has 392 places, 613 transitions, 8842 flow. Second operand 8 states and 137 transitions. [2024-06-28 04:07:52,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 637 transitions, 10540 flow [2024-06-28 04:07:53,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 637 transitions, 10398 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 04:07:53,954 INFO L231 Difference]: Finished difference. Result has 394 places, 619 transitions, 9000 flow [2024-06-28 04:07:53,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8700, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9000, PETRI_PLACES=394, PETRI_TRANSITIONS=619} [2024-06-28 04:07:53,955 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 353 predicate places. [2024-06-28 04:07:53,955 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 619 transitions, 9000 flow [2024-06-28 04:07:53,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:53,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:53,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:53,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 04:07:53,955 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:53,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:53,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1906698611, now seen corresponding path program 24 times [2024-06-28 04:07:53,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:53,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036633299] [2024-06-28 04:07:53,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:53,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:54,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:07:54,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:54,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036633299] [2024-06-28 04:07:54,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036633299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:54,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:54,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:07:54,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530719822] [2024-06-28 04:07:54,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:54,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:07:54,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:54,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:07:54,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:07:54,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:07:54,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 619 transitions, 9000 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:54,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:54,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:07:54,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:55,950 INFO L124 PetriNetUnfolderBase]: 3491/5367 cut-off events. [2024-06-28 04:07:55,950 INFO L125 PetriNetUnfolderBase]: For 434231/434237 co-relation queries the response was YES. [2024-06-28 04:07:56,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45172 conditions, 5367 events. 3491/5367 cut-off events. For 434231/434237 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 30187 event pairs, 555 based on Foata normal form. 10/5376 useless extension candidates. Maximal degree in co-relation 45002. Up to 4982 conditions per place. [2024-06-28 04:07:56,038 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 571 selfloop transitions, 61 changer transitions 0/636 dead transitions. [2024-06-28 04:07:56,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 636 transitions, 10362 flow [2024-06-28 04:07:56,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:07:56,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:07:56,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 04:07:56,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-28 04:07:56,039 INFO L175 Difference]: Start difference. First operand has 394 places, 619 transitions, 9000 flow. Second operand 8 states and 135 transitions. [2024-06-28 04:07:56,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 636 transitions, 10362 flow [2024-06-28 04:07:57,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 636 transitions, 10156 flow, removed 74 selfloop flow, removed 4 redundant places. [2024-06-28 04:07:57,910 INFO L231 Difference]: Finished difference. Result has 398 places, 619 transitions, 8922 flow [2024-06-28 04:07:57,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8794, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8922, PETRI_PLACES=398, PETRI_TRANSITIONS=619} [2024-06-28 04:07:57,910 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 357 predicate places. [2024-06-28 04:07:57,910 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 619 transitions, 8922 flow [2024-06-28 04:07:57,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:57,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:57,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:57,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 04:07:57,911 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:57,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:57,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1699629461, now seen corresponding path program 25 times [2024-06-28 04:07:57,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:57,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026373043] [2024-06-28 04:07:57,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:57,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:58,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:07:58,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:58,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026373043] [2024-06-28 04:07:58,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026373043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:58,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:58,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:07:58,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722414667] [2024-06-28 04:07:58,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:58,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:07:58,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:58,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:07:58,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:07:58,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:07:58,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 619 transitions, 8922 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:58,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:58,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:07:58,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:00,385 INFO L124 PetriNetUnfolderBase]: 3479/5355 cut-off events. [2024-06-28 04:08:00,386 INFO L125 PetriNetUnfolderBase]: For 428010/428016 co-relation queries the response was YES. [2024-06-28 04:08:00,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44688 conditions, 5355 events. 3479/5355 cut-off events. For 428010/428016 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 30214 event pairs, 585 based on Foata normal form. 10/5364 useless extension candidates. Maximal degree in co-relation 44516. Up to 4859 conditions per place. [2024-06-28 04:08:00,471 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 550 selfloop transitions, 99 changer transitions 0/653 dead transitions. [2024-06-28 04:08:00,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 653 transitions, 10410 flow [2024-06-28 04:08:00,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:08:00,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:08:00,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-28 04:08:00,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425 [2024-06-28 04:08:00,472 INFO L175 Difference]: Start difference. First operand has 398 places, 619 transitions, 8922 flow. Second operand 10 states and 177 transitions. [2024-06-28 04:08:00,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 653 transitions, 10410 flow [2024-06-28 04:08:02,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 653 transitions, 10246 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 04:08:02,794 INFO L231 Difference]: Finished difference. Result has 401 places, 619 transitions, 8963 flow [2024-06-28 04:08:02,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8758, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8963, PETRI_PLACES=401, PETRI_TRANSITIONS=619} [2024-06-28 04:08:02,794 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 360 predicate places. [2024-06-28 04:08:02,795 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 619 transitions, 8963 flow [2024-06-28 04:08:02,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:02,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:02,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:02,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 04:08:02,795 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:02,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:02,795 INFO L85 PathProgramCache]: Analyzing trace with hash 343365745, now seen corresponding path program 26 times [2024-06-28 04:08:02,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:02,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21021825] [2024-06-28 04:08:02,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:02,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:03,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:03,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:03,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21021825] [2024-06-28 04:08:03,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21021825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:03,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:03,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:08:03,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238548695] [2024-06-28 04:08:03,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:03,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:08:03,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:03,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:08:03,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:08:03,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:08:03,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 619 transitions, 8963 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:03,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:03,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:08:03,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:04,868 INFO L124 PetriNetUnfolderBase]: 3499/5383 cut-off events. [2024-06-28 04:08:04,869 INFO L125 PetriNetUnfolderBase]: For 438398/438404 co-relation queries the response was YES. [2024-06-28 04:08:04,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45129 conditions, 5383 events. 3499/5383 cut-off events. For 438398/438404 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 30400 event pairs, 565 based on Foata normal form. 10/5392 useless extension candidates. Maximal degree in co-relation 44956. Up to 4545 conditions per place. [2024-06-28 04:08:04,943 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 491 selfloop transitions, 150 changer transitions 0/645 dead transitions. [2024-06-28 04:08:04,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 645 transitions, 10635 flow [2024-06-28 04:08:04,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:08:04,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:08:04,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 04:08:04,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45625 [2024-06-28 04:08:04,945 INFO L175 Difference]: Start difference. First operand has 401 places, 619 transitions, 8963 flow. Second operand 8 states and 146 transitions. [2024-06-28 04:08:04,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 645 transitions, 10635 flow [2024-06-28 04:08:07,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 645 transitions, 10368 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 04:08:07,421 INFO L231 Difference]: Finished difference. Result has 399 places, 622 transitions, 9094 flow [2024-06-28 04:08:07,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8696, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9094, PETRI_PLACES=399, PETRI_TRANSITIONS=622} [2024-06-28 04:08:07,422 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 358 predicate places. [2024-06-28 04:08:07,422 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 622 transitions, 9094 flow [2024-06-28 04:08:07,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:07,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:07,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:07,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 04:08:07,423 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:07,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:07,423 INFO L85 PathProgramCache]: Analyzing trace with hash -834726735, now seen corresponding path program 27 times [2024-06-28 04:08:07,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:07,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587616526] [2024-06-28 04:08:07,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:07,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:08,096 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 04:08:08,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:08,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587616526] [2024-06-28 04:08:08,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587616526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:08,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:08,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:08:08,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877588605] [2024-06-28 04:08:08,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:08,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:08:08,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:08,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:08:08,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:08:08,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:08:08,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 622 transitions, 9094 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:08,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:08,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:08:08,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:09,557 INFO L124 PetriNetUnfolderBase]: 3487/5367 cut-off events. [2024-06-28 04:08:09,557 INFO L125 PetriNetUnfolderBase]: For 433888/433894 co-relation queries the response was YES. [2024-06-28 04:08:09,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44917 conditions, 5367 events. 3487/5367 cut-off events. For 433888/433894 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 30280 event pairs, 557 based on Foata normal form. 10/5376 useless extension candidates. Maximal degree in co-relation 44743. Up to 4537 conditions per place. [2024-06-28 04:08:09,624 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 488 selfloop transitions, 152 changer transitions 0/644 dead transitions. [2024-06-28 04:08:09,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 644 transitions, 10504 flow [2024-06-28 04:08:09,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:08:09,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:08:09,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 04:08:09,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-28 04:08:09,626 INFO L175 Difference]: Start difference. First operand has 399 places, 622 transitions, 9094 flow. Second operand 8 states and 145 transitions. [2024-06-28 04:08:09,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 644 transitions, 10504 flow [2024-06-28 04:08:11,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 644 transitions, 9883 flow, removed 80 selfloop flow, removed 7 redundant places. [2024-06-28 04:08:11,792 INFO L231 Difference]: Finished difference. Result has 400 places, 622 transitions, 8783 flow [2024-06-28 04:08:11,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8473, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8783, PETRI_PLACES=400, PETRI_TRANSITIONS=622} [2024-06-28 04:08:11,792 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 359 predicate places. [2024-06-28 04:08:11,792 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 622 transitions, 8783 flow [2024-06-28 04:08:11,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:11,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:11,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:11,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 04:08:11,793 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:11,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:11,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1883651995, now seen corresponding path program 28 times [2024-06-28 04:08:11,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:11,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819068067] [2024-06-28 04:08:11,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:11,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:12,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:12,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:12,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819068067] [2024-06-28 04:08:12,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819068067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:12,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:12,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:08:12,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537906539] [2024-06-28 04:08:12,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:12,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:08:12,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:12,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:08:12,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:08:12,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:08:12,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 622 transitions, 8783 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:12,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:12,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:08:12,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:13,929 INFO L124 PetriNetUnfolderBase]: 3475/5355 cut-off events. [2024-06-28 04:08:13,929 INFO L125 PetriNetUnfolderBase]: For 425818/425824 co-relation queries the response was YES. [2024-06-28 04:08:13,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43582 conditions, 5355 events. 3475/5355 cut-off events. For 425818/425824 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 30346 event pairs, 521 based on Foata normal form. 10/5364 useless extension candidates. Maximal degree in co-relation 43409. Up to 4822 conditions per place. [2024-06-28 04:08:14,019 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 528 selfloop transitions, 117 changer transitions 0/649 dead transitions. [2024-06-28 04:08:14,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 649 transitions, 10235 flow [2024-06-28 04:08:14,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:08:14,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:08:14,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 04:08:14,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-28 04:08:14,020 INFO L175 Difference]: Start difference. First operand has 400 places, 622 transitions, 8783 flow. Second operand 9 states and 159 transitions. [2024-06-28 04:08:14,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 649 transitions, 10235 flow [2024-06-28 04:08:16,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 649 transitions, 9849 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 04:08:16,216 INFO L231 Difference]: Finished difference. Result has 403 places, 622 transitions, 8647 flow [2024-06-28 04:08:16,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8397, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8647, PETRI_PLACES=403, PETRI_TRANSITIONS=622} [2024-06-28 04:08:16,217 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 362 predicate places. [2024-06-28 04:08:16,217 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 622 transitions, 8647 flow [2024-06-28 04:08:16,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:16,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:16,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:16,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 04:08:16,226 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:16,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:16,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1637455101, now seen corresponding path program 1 times [2024-06-28 04:08:16,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:16,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115773182] [2024-06-28 04:08:16,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:16,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:16,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:17,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:17,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:17,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115773182] [2024-06-28 04:08:17,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115773182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:17,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:17,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:08:17,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551980216] [2024-06-28 04:08:17,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:17,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:08:17,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:17,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:08:17,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:08:17,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:08:17,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 622 transitions, 8647 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:17,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:17,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:08:17,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:18,571 INFO L124 PetriNetUnfolderBase]: 3536/5417 cut-off events. [2024-06-28 04:08:18,571 INFO L125 PetriNetUnfolderBase]: For 470595/470595 co-relation queries the response was YES. [2024-06-28 04:08:18,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44485 conditions, 5417 events. 3536/5417 cut-off events. For 470595/470595 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 30335 event pairs, 591 based on Foata normal form. 8/5424 useless extension candidates. Maximal degree in co-relation 44311. Up to 4855 conditions per place. [2024-06-28 04:08:18,656 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 567 selfloop transitions, 99 changer transitions 0/670 dead transitions. [2024-06-28 04:08:18,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 670 transitions, 10633 flow [2024-06-28 04:08:18,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:08:18,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:08:18,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-28 04:08:18,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4575 [2024-06-28 04:08:18,657 INFO L175 Difference]: Start difference. First operand has 403 places, 622 transitions, 8647 flow. Second operand 10 states and 183 transitions. [2024-06-28 04:08:18,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 670 transitions, 10633 flow [2024-06-28 04:08:20,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 670 transitions, 10383 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 04:08:20,861 INFO L231 Difference]: Finished difference. Result has 406 places, 627 transitions, 8720 flow [2024-06-28 04:08:20,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8405, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8720, PETRI_PLACES=406, PETRI_TRANSITIONS=627} [2024-06-28 04:08:20,861 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 365 predicate places. [2024-06-28 04:08:20,861 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 627 transitions, 8720 flow [2024-06-28 04:08:20,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:20,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:20,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:20,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 04:08:20,862 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:20,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:20,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1635581151, now seen corresponding path program 2 times [2024-06-28 04:08:20,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:20,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255426801] [2024-06-28 04:08:20,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:20,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:21,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:21,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:21,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255426801] [2024-06-28 04:08:21,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255426801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:21,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:21,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:08:21,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130835843] [2024-06-28 04:08:21,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:21,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:08:21,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:21,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:08:21,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:08:21,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:08:21,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 627 transitions, 8720 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:21,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:21,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:08:21,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:23,270 INFO L124 PetriNetUnfolderBase]: 3633/5564 cut-off events. [2024-06-28 04:08:23,270 INFO L125 PetriNetUnfolderBase]: For 498746/498746 co-relation queries the response was YES. [2024-06-28 04:08:23,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46373 conditions, 5564 events. 3633/5564 cut-off events. For 498746/498746 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 31296 event pairs, 614 based on Foata normal form. 8/5571 useless extension candidates. Maximal degree in co-relation 46197. Up to 5106 conditions per place. [2024-06-28 04:08:23,360 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 564 selfloop transitions, 102 changer transitions 0/670 dead transitions. [2024-06-28 04:08:23,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 670 transitions, 10674 flow [2024-06-28 04:08:23,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:08:23,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:08:23,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-28 04:08:23,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4525 [2024-06-28 04:08:23,361 INFO L175 Difference]: Start difference. First operand has 406 places, 627 transitions, 8720 flow. Second operand 10 states and 181 transitions. [2024-06-28 04:08:23,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 670 transitions, 10674 flow [2024-06-28 04:08:25,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 670 transitions, 10527 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 04:08:25,612 INFO L231 Difference]: Finished difference. Result has 412 places, 634 transitions, 8872 flow [2024-06-28 04:08:25,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8577, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8872, PETRI_PLACES=412, PETRI_TRANSITIONS=634} [2024-06-28 04:08:25,612 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 371 predicate places. [2024-06-28 04:08:25,612 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 634 transitions, 8872 flow [2024-06-28 04:08:25,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:25,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:25,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:25,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 04:08:25,614 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:25,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:25,614 INFO L85 PathProgramCache]: Analyzing trace with hash 2019746829, now seen corresponding path program 3 times [2024-06-28 04:08:25,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:25,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274750183] [2024-06-28 04:08:25,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:25,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:26,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:26,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:26,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274750183] [2024-06-28 04:08:26,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274750183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:26,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:26,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:08:26,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29444893] [2024-06-28 04:08:26,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:26,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:08:26,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:26,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:08:26,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:08:26,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:08:26,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 634 transitions, 8872 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:26,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:26,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:08:26,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:27,930 INFO L124 PetriNetUnfolderBase]: 3610/5531 cut-off events. [2024-06-28 04:08:27,930 INFO L125 PetriNetUnfolderBase]: For 479952/479952 co-relation queries the response was YES. [2024-06-28 04:08:27,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45672 conditions, 5531 events. 3610/5531 cut-off events. For 479952/479952 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 31127 event pairs, 613 based on Foata normal form. 10/5540 useless extension candidates. Maximal degree in co-relation 45493. Up to 5134 conditions per place. [2024-06-28 04:08:28,022 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 561 selfloop transitions, 101 changer transitions 0/666 dead transitions. [2024-06-28 04:08:28,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 666 transitions, 10550 flow [2024-06-28 04:08:28,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:08:28,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:08:28,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-28 04:08:28,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-28 04:08:28,023 INFO L175 Difference]: Start difference. First operand has 412 places, 634 transitions, 8872 flow. Second operand 10 states and 176 transitions. [2024-06-28 04:08:28,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 666 transitions, 10550 flow [2024-06-28 04:08:29,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 666 transitions, 10455 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 04:08:29,897 INFO L231 Difference]: Finished difference. Result has 418 places, 635 transitions, 9012 flow [2024-06-28 04:08:29,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8785, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9012, PETRI_PLACES=418, PETRI_TRANSITIONS=635} [2024-06-28 04:08:29,898 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 377 predicate places. [2024-06-28 04:08:29,898 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 635 transitions, 9012 flow [2024-06-28 04:08:29,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:29,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:29,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:29,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 04:08:29,898 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:29,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:29,899 INFO L85 PathProgramCache]: Analyzing trace with hash 2106434919, now seen corresponding path program 4 times [2024-06-28 04:08:29,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:29,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722517526] [2024-06-28 04:08:29,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:29,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:30,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:30,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:30,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722517526] [2024-06-28 04:08:30,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722517526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:30,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:30,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:08:30,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060384342] [2024-06-28 04:08:30,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:30,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:08:30,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:30,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:08:30,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:08:31,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:08:31,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 635 transitions, 9012 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:31,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:31,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:08:31,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:32,399 INFO L124 PetriNetUnfolderBase]: 3697/5664 cut-off events. [2024-06-28 04:08:32,400 INFO L125 PetriNetUnfolderBase]: For 521744/521744 co-relation queries the response was YES. [2024-06-28 04:08:32,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47839 conditions, 5664 events. 3697/5664 cut-off events. For 521744/521744 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 31989 event pairs, 630 based on Foata normal form. 8/5671 useless extension candidates. Maximal degree in co-relation 47658. Up to 5286 conditions per place. [2024-06-28 04:08:32,491 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 598 selfloop transitions, 68 changer transitions 0/670 dead transitions. [2024-06-28 04:08:32,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 670 transitions, 10763 flow [2024-06-28 04:08:32,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:08:32,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:08:32,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-28 04:08:32,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-28 04:08:32,492 INFO L175 Difference]: Start difference. First operand has 418 places, 635 transitions, 9012 flow. Second operand 10 states and 176 transitions. [2024-06-28 04:08:32,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 670 transitions, 10763 flow [2024-06-28 04:08:35,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 670 transitions, 10566 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 04:08:35,359 INFO L231 Difference]: Finished difference. Result has 422 places, 638 transitions, 9021 flow [2024-06-28 04:08:35,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8815, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9021, PETRI_PLACES=422, PETRI_TRANSITIONS=638} [2024-06-28 04:08:35,360 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 381 predicate places. [2024-06-28 04:08:35,360 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 638 transitions, 9021 flow [2024-06-28 04:08:35,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:35,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:35,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:35,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 04:08:35,360 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:35,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:35,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1548885621, now seen corresponding path program 5 times [2024-06-28 04:08:35,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:35,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105200869] [2024-06-28 04:08:35,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:35,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:36,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:36,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:36,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105200869] [2024-06-28 04:08:36,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105200869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:36,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:36,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:08:36,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503599807] [2024-06-28 04:08:36,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:36,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:08:36,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:36,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:08:36,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:08:36,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:08:36,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 638 transitions, 9021 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:36,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:36,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:08:36,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:37,714 INFO L124 PetriNetUnfolderBase]: 3743/5734 cut-off events. [2024-06-28 04:08:37,715 INFO L125 PetriNetUnfolderBase]: For 542477/542477 co-relation queries the response was YES. [2024-06-28 04:08:37,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48571 conditions, 5734 events. 3743/5734 cut-off events. For 542477/542477 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 32474 event pairs, 646 based on Foata normal form. 10/5743 useless extension candidates. Maximal degree in co-relation 48388. Up to 5413 conditions per place. [2024-06-28 04:08:37,809 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 596 selfloop transitions, 70 changer transitions 0/670 dead transitions. [2024-06-28 04:08:37,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 670 transitions, 10567 flow [2024-06-28 04:08:37,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:08:37,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:08:37,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 04:08:37,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4325 [2024-06-28 04:08:37,810 INFO L175 Difference]: Start difference. First operand has 422 places, 638 transitions, 9021 flow. Second operand 10 states and 173 transitions. [2024-06-28 04:08:37,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 670 transitions, 10567 flow [2024-06-28 04:08:40,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 670 transitions, 10431 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 04:08:40,599 INFO L231 Difference]: Finished difference. Result has 426 places, 642 transitions, 9094 flow [2024-06-28 04:08:40,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8890, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9094, PETRI_PLACES=426, PETRI_TRANSITIONS=642} [2024-06-28 04:08:40,599 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 385 predicate places. [2024-06-28 04:08:40,599 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 642 transitions, 9094 flow [2024-06-28 04:08:40,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:40,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:40,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:40,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 04:08:40,600 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:40,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:40,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2106588741, now seen corresponding path program 1 times [2024-06-28 04:08:40,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:40,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062348547] [2024-06-28 04:08:40,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:40,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:41,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:41,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:41,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062348547] [2024-06-28 04:08:41,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062348547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:41,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:41,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:08:41,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121555656] [2024-06-28 04:08:41,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:41,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:08:41,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:41,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:08:41,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:08:41,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:08:41,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 642 transitions, 9094 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:41,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:41,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:08:41,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:43,064 INFO L124 PetriNetUnfolderBase]: 3751/5746 cut-off events. [2024-06-28 04:08:43,064 INFO L125 PetriNetUnfolderBase]: For 522505/522505 co-relation queries the response was YES. [2024-06-28 04:08:43,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48856 conditions, 5746 events. 3751/5746 cut-off events. For 522505/522505 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 32589 event pairs, 647 based on Foata normal form. 2/5747 useless extension candidates. Maximal degree in co-relation 48671. Up to 5487 conditions per place. [2024-06-28 04:08:43,156 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 606 selfloop transitions, 55 changer transitions 0/665 dead transitions. [2024-06-28 04:08:43,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 665 transitions, 10534 flow [2024-06-28 04:08:43,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:08:43,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:08:43,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 04:08:43,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-28 04:08:43,158 INFO L175 Difference]: Start difference. First operand has 426 places, 642 transitions, 9094 flow. Second operand 9 states and 152 transitions. [2024-06-28 04:08:43,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 665 transitions, 10534 flow [2024-06-28 04:08:46,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 665 transitions, 10391 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 04:08:46,127 INFO L231 Difference]: Finished difference. Result has 428 places, 644 transitions, 9114 flow [2024-06-28 04:08:46,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8951, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=587, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9114, PETRI_PLACES=428, PETRI_TRANSITIONS=644} [2024-06-28 04:08:46,127 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 387 predicate places. [2024-06-28 04:08:46,128 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 644 transitions, 9114 flow [2024-06-28 04:08:46,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:46,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:46,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:46,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 04:08:46,128 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:46,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:46,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1548741471, now seen corresponding path program 6 times [2024-06-28 04:08:46,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:46,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661179714] [2024-06-28 04:08:46,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:46,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:47,158 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 04:08:47,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:47,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661179714] [2024-06-28 04:08:47,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661179714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:47,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:47,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:08:47,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967063361] [2024-06-28 04:08:47,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:47,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:08:47,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:47,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:08:47,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:08:47,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:08:47,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 644 transitions, 9114 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:47,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:47,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:08:47,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:48,659 INFO L124 PetriNetUnfolderBase]: 3748/5745 cut-off events. [2024-06-28 04:08:48,660 INFO L125 PetriNetUnfolderBase]: For 546910/546910 co-relation queries the response was YES. [2024-06-28 04:08:48,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48023 conditions, 5745 events. 3748/5745 cut-off events. For 546910/546910 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 32606 event pairs, 642 based on Foata normal form. 16/5760 useless extension candidates. Maximal degree in co-relation 47837. Up to 5412 conditions per place. [2024-06-28 04:08:48,751 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 610 selfloop transitions, 59 changer transitions 0/673 dead transitions. [2024-06-28 04:08:48,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 673 transitions, 10648 flow [2024-06-28 04:08:48,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:08:48,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:08:48,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 04:08:48,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 04:08:48,753 INFO L175 Difference]: Start difference. First operand has 428 places, 644 transitions, 9114 flow. Second operand 10 states and 170 transitions. [2024-06-28 04:08:48,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 673 transitions, 10648 flow [2024-06-28 04:08:51,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 673 transitions, 10485 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 04:08:51,961 INFO L231 Difference]: Finished difference. Result has 431 places, 646 transitions, 9133 flow [2024-06-28 04:08:51,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8959, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9133, PETRI_PLACES=431, PETRI_TRANSITIONS=646} [2024-06-28 04:08:51,961 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 390 predicate places. [2024-06-28 04:08:51,961 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 646 transitions, 9133 flow [2024-06-28 04:08:51,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:51,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:51,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:51,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 04:08:51,962 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:51,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:51,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1385497613, now seen corresponding path program 7 times [2024-06-28 04:08:51,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:51,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713583991] [2024-06-28 04:08:51,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:51,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:52,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:52,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:52,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713583991] [2024-06-28 04:08:52,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713583991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:52,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:52,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:08:52,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504591773] [2024-06-28 04:08:52,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:52,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:08:52,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:52,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:08:52,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:08:52,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:08:52,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 646 transitions, 9133 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:52,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:52,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:08:52,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:54,453 INFO L124 PetriNetUnfolderBase]: 3784/5805 cut-off events. [2024-06-28 04:08:54,453 INFO L125 PetriNetUnfolderBase]: For 535497/535497 co-relation queries the response was YES. [2024-06-28 04:08:54,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48537 conditions, 5805 events. 3784/5805 cut-off events. For 535497/535497 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 33043 event pairs, 659 based on Foata normal form. 10/5814 useless extension candidates. Maximal degree in co-relation 48350. Up to 5518 conditions per place. [2024-06-28 04:08:54,551 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 616 selfloop transitions, 52 changer transitions 0/672 dead transitions. [2024-06-28 04:08:54,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 672 transitions, 10638 flow [2024-06-28 04:08:54,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:08:54,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:08:54,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 04:08:54,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4225 [2024-06-28 04:08:54,552 INFO L175 Difference]: Start difference. First operand has 431 places, 646 transitions, 9133 flow. Second operand 10 states and 169 transitions. [2024-06-28 04:08:54,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 672 transitions, 10638 flow [2024-06-28 04:08:57,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 672 transitions, 10508 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 04:08:57,784 INFO L231 Difference]: Finished difference. Result has 433 places, 647 transitions, 9141 flow [2024-06-28 04:08:57,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9003, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=594, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9141, PETRI_PLACES=433, PETRI_TRANSITIONS=647} [2024-06-28 04:08:57,785 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 392 predicate places. [2024-06-28 04:08:57,785 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 647 transitions, 9141 flow [2024-06-28 04:08:57,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:57,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:57,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:57,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 04:08:57,785 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:57,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:57,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1385493893, now seen corresponding path program 8 times [2024-06-28 04:08:57,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:57,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876090204] [2024-06-28 04:08:57,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:57,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:58,758 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 04:08:58,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:58,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876090204] [2024-06-28 04:08:58,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876090204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:58,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:58,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:08:58,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370795675] [2024-06-28 04:08:58,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:58,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:08:58,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:58,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:08:58,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:08:58,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:08:58,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 647 transitions, 9141 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:58,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:58,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:08:58,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:00,504 INFO L124 PetriNetUnfolderBase]: 3871/5938 cut-off events. [2024-06-28 04:09:00,504 INFO L125 PetriNetUnfolderBase]: For 582843/582843 co-relation queries the response was YES. [2024-06-28 04:09:00,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50661 conditions, 5938 events. 3871/5938 cut-off events. For 582843/582843 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 33945 event pairs, 672 based on Foata normal form. 8/5945 useless extension candidates. Maximal degree in co-relation 50473. Up to 5542 conditions per place. [2024-06-28 04:09:00,596 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 621 selfloop transitions, 54 changer transitions 0/679 dead transitions. [2024-06-28 04:09:00,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 679 transitions, 10918 flow [2024-06-28 04:09:00,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:09:00,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:09:00,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-28 04:09:00,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43 [2024-06-28 04:09:00,597 INFO L175 Difference]: Start difference. First operand has 433 places, 647 transitions, 9141 flow. Second operand 10 states and 172 transitions. [2024-06-28 04:09:00,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 679 transitions, 10918 flow [2024-06-28 04:09:03,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 679 transitions, 10805 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 04:09:03,582 INFO L231 Difference]: Finished difference. Result has 436 places, 650 transitions, 9219 flow [2024-06-28 04:09:03,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9028, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=594, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9219, PETRI_PLACES=436, PETRI_TRANSITIONS=650} [2024-06-28 04:09:03,582 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 395 predicate places. [2024-06-28 04:09:03,582 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 650 transitions, 9219 flow [2024-06-28 04:09:03,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:03,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:03,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:03,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 04:09:03,583 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:03,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:03,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1391211905, now seen corresponding path program 2 times [2024-06-28 04:09:03,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:03,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860174505] [2024-06-28 04:09:03,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:03,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:04,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:04,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:04,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860174505] [2024-06-28 04:09:04,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860174505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:04,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:04,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:09:04,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361543585] [2024-06-28 04:09:04,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:04,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:09:04,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:04,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:09:04,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:09:04,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:09:04,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 650 transitions, 9219 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:04,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:04,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:09:04,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:06,557 INFO L124 PetriNetUnfolderBase]: 3879/5950 cut-off events. [2024-06-28 04:09:06,557 INFO L125 PetriNetUnfolderBase]: For 569084/569084 co-relation queries the response was YES. [2024-06-28 04:09:06,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50954 conditions, 5950 events. 3879/5950 cut-off events. For 569084/569084 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 34055 event pairs, 685 based on Foata normal form. 2/5951 useless extension candidates. Maximal degree in co-relation 50764. Up to 5730 conditions per place. [2024-06-28 04:09:06,655 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 631 selfloop transitions, 38 changer transitions 0/673 dead transitions. [2024-06-28 04:09:06,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 673 transitions, 10683 flow [2024-06-28 04:09:06,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:09:06,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:09:06,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-28 04:09:06,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39545454545454545 [2024-06-28 04:09:06,656 INFO L175 Difference]: Start difference. First operand has 436 places, 650 transitions, 9219 flow. Second operand 11 states and 174 transitions. [2024-06-28 04:09:06,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 673 transitions, 10683 flow [2024-06-28 04:09:09,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 673 transitions, 10604 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 04:09:09,912 INFO L231 Difference]: Finished difference. Result has 441 places, 652 transitions, 9275 flow [2024-06-28 04:09:09,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9140, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=612, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9275, PETRI_PLACES=441, PETRI_TRANSITIONS=652} [2024-06-28 04:09:09,912 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 400 predicate places. [2024-06-28 04:09:09,913 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 652 transitions, 9275 flow [2024-06-28 04:09:09,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:09,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:09,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:09,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 04:09:09,913 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:09,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:09,914 INFO L85 PathProgramCache]: Analyzing trace with hash 2025290751, now seen corresponding path program 3 times [2024-06-28 04:09:09,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:09,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538523505] [2024-06-28 04:09:09,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:09,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:10,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:10,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:10,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538523505] [2024-06-28 04:09:10,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538523505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:10,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:10,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:09:10,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369590402] [2024-06-28 04:09:10,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:10,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:09:10,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:10,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:09:10,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:09:10,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:09:10,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 652 transitions, 9275 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:10,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:10,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:09:10,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:12,475 INFO L124 PetriNetUnfolderBase]: 3887/5962 cut-off events. [2024-06-28 04:09:12,476 INFO L125 PetriNetUnfolderBase]: For 580239/580239 co-relation queries the response was YES. [2024-06-28 04:09:12,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51196 conditions, 5962 events. 3887/5962 cut-off events. For 580239/580239 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 34132 event pairs, 687 based on Foata normal form. 2/5963 useless extension candidates. Maximal degree in co-relation 51004. Up to 5742 conditions per place. [2024-06-28 04:09:12,571 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 632 selfloop transitions, 37 changer transitions 0/673 dead transitions. [2024-06-28 04:09:12,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 673 transitions, 10739 flow [2024-06-28 04:09:12,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:09:12,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:09:12,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 04:09:12,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 04:09:12,572 INFO L175 Difference]: Start difference. First operand has 441 places, 652 transitions, 9275 flow. Second operand 9 states and 150 transitions. [2024-06-28 04:09:12,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 673 transitions, 10739 flow [2024-06-28 04:09:16,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 673 transitions, 10620 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 04:09:16,159 INFO L231 Difference]: Finished difference. Result has 441 places, 654 transitions, 9293 flow [2024-06-28 04:09:16,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9156, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=615, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9293, PETRI_PLACES=441, PETRI_TRANSITIONS=654} [2024-06-28 04:09:16,160 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 400 predicate places. [2024-06-28 04:09:16,160 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 654 transitions, 9293 flow [2024-06-28 04:09:16,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:16,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:16,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:16,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 04:09:16,160 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:16,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:16,161 INFO L85 PathProgramCache]: Analyzing trace with hash 2025284799, now seen corresponding path program 9 times [2024-06-28 04:09:16,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:16,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796603367] [2024-06-28 04:09:16,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:16,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:17,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:17,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:17,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796603367] [2024-06-28 04:09:17,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796603367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:17,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:17,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:09:17,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119898524] [2024-06-28 04:09:17,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:17,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:09:17,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:17,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:09:17,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:09:17,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:09:17,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 654 transitions, 9293 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:17,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:17,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:09:17,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:18,780 INFO L124 PetriNetUnfolderBase]: 3943/6050 cut-off events. [2024-06-28 04:09:18,781 INFO L125 PetriNetUnfolderBase]: For 654807/654807 co-relation queries the response was YES. [2024-06-28 04:09:18,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52085 conditions, 6050 events. 3943/6050 cut-off events. For 654807/654807 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 34769 event pairs, 693 based on Foata normal form. 16/6065 useless extension candidates. Maximal degree in co-relation 51892. Up to 5756 conditions per place. [2024-06-28 04:09:18,884 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 636 selfloop transitions, 41 changer transitions 0/681 dead transitions. [2024-06-28 04:09:18,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 681 transitions, 10847 flow [2024-06-28 04:09:18,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:09:18,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:09:18,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 04:09:18,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42 [2024-06-28 04:09:18,885 INFO L175 Difference]: Start difference. First operand has 441 places, 654 transitions, 9293 flow. Second operand 10 states and 168 transitions. [2024-06-28 04:09:18,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 681 transitions, 10847 flow [2024-06-28 04:09:22,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 681 transitions, 10726 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 04:09:22,962 INFO L231 Difference]: Finished difference. Result has 444 places, 656 transitions, 9324 flow [2024-06-28 04:09:22,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9172, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=613, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9324, PETRI_PLACES=444, PETRI_TRANSITIONS=656} [2024-06-28 04:09:22,963 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 403 predicate places. [2024-06-28 04:09:22,963 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 656 transitions, 9324 flow [2024-06-28 04:09:22,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:22,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:22,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:22,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 04:09:22,964 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:22,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:22,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1391219345, now seen corresponding path program 4 times [2024-06-28 04:09:22,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:22,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304421628] [2024-06-28 04:09:22,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:22,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:23,933 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 04:09:23,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:23,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304421628] [2024-06-28 04:09:23,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304421628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:23,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:23,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:09:23,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325801243] [2024-06-28 04:09:23,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:23,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:09:23,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:23,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:09:23,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:09:24,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:09:24,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 656 transitions, 9324 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:24,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:24,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:09:24,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:25,618 INFO L124 PetriNetUnfolderBase]: 3951/6062 cut-off events. [2024-06-28 04:09:25,618 INFO L125 PetriNetUnfolderBase]: For 607066/607066 co-relation queries the response was YES. [2024-06-28 04:09:25,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52371 conditions, 6062 events. 3951/6062 cut-off events. For 607066/607066 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 34827 event pairs, 685 based on Foata normal form. 2/6063 useless extension candidates. Maximal degree in co-relation 52177. Up to 5822 conditions per place. [2024-06-28 04:09:25,725 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 631 selfloop transitions, 44 changer transitions 0/679 dead transitions. [2024-06-28 04:09:25,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 679 transitions, 10804 flow [2024-06-28 04:09:25,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:09:25,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:09:25,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-28 04:09:25,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39545454545454545 [2024-06-28 04:09:25,729 INFO L175 Difference]: Start difference. First operand has 444 places, 656 transitions, 9324 flow. Second operand 11 states and 174 transitions. [2024-06-28 04:09:25,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 679 transitions, 10804 flow [2024-06-28 04:09:30,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 679 transitions, 10704 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 04:09:30,245 INFO L231 Difference]: Finished difference. Result has 447 places, 658 transitions, 9381 flow [2024-06-28 04:09:30,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9224, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=612, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9381, PETRI_PLACES=447, PETRI_TRANSITIONS=658} [2024-06-28 04:09:30,246 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 406 predicate places. [2024-06-28 04:09:30,246 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 658 transitions, 9381 flow [2024-06-28 04:09:30,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:30,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:30,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:30,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 04:09:30,248 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:30,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:30,249 INFO L85 PathProgramCache]: Analyzing trace with hash 2030647179, now seen corresponding path program 10 times [2024-06-28 04:09:30,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:30,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482978633] [2024-06-28 04:09:30,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:30,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:31,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:31,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:31,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482978633] [2024-06-28 04:09:31,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482978633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:31,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:31,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:09:31,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144241397] [2024-06-28 04:09:31,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:31,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:09:31,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:31,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:09:31,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:09:31,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:09:31,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 658 transitions, 9381 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:31,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:31,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:09:31,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:32,878 INFO L124 PetriNetUnfolderBase]: 3948/6061 cut-off events. [2024-06-28 04:09:32,879 INFO L125 PetriNetUnfolderBase]: For 634546/634546 co-relation queries the response was YES. [2024-06-28 04:09:32,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51454 conditions, 6061 events. 3948/6061 cut-off events. For 634546/634546 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 34884 event pairs, 688 based on Foata normal form. 16/6076 useless extension candidates. Maximal degree in co-relation 51259. Up to 5767 conditions per place. [2024-06-28 04:09:32,984 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 641 selfloop transitions, 42 changer transitions 0/687 dead transitions. [2024-06-28 04:09:32,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 687 transitions, 10957 flow [2024-06-28 04:09:32,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:09:32,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:09:32,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 192 transitions. [2024-06-28 04:09:32,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 04:09:32,986 INFO L175 Difference]: Start difference. First operand has 447 places, 658 transitions, 9381 flow. Second operand 12 states and 192 transitions. [2024-06-28 04:09:32,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 687 transitions, 10957 flow [2024-06-28 04:09:36,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 687 transitions, 10800 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-28 04:09:36,825 INFO L231 Difference]: Finished difference. Result has 450 places, 660 transitions, 9384 flow [2024-06-28 04:09:36,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9232, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9384, PETRI_PLACES=450, PETRI_TRANSITIONS=660} [2024-06-28 04:09:36,826 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 409 predicate places. [2024-06-28 04:09:36,826 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 660 transitions, 9384 flow [2024-06-28 04:09:36,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:36,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:36,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:36,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 04:09:36,827 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:36,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:36,827 INFO L85 PathProgramCache]: Analyzing trace with hash -834510045, now seen corresponding path program 5 times [2024-06-28 04:09:36,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:36,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234243215] [2024-06-28 04:09:36,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:36,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:37,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:37,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:37,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234243215] [2024-06-28 04:09:37,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234243215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:37,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:37,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:09:37,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37612675] [2024-06-28 04:09:37,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:37,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:09:37,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:37,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:09:37,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:09:37,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:09:37,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 660 transitions, 9384 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:37,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:37,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:09:37,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:39,481 INFO L124 PetriNetUnfolderBase]: 3956/6093 cut-off events. [2024-06-28 04:09:39,481 INFO L125 PetriNetUnfolderBase]: For 582385/582385 co-relation queries the response was YES. [2024-06-28 04:09:39,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51602 conditions, 6093 events. 3956/6093 cut-off events. For 582385/582385 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 35374 event pairs, 734 based on Foata normal form. 2/6094 useless extension candidates. Maximal degree in co-relation 51406. Up to 5845 conditions per place. [2024-06-28 04:09:39,587 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 639 selfloop transitions, 36 changer transitions 0/679 dead transitions. [2024-06-28 04:09:39,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 679 transitions, 10862 flow [2024-06-28 04:09:39,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:09:39,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:09:39,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 04:09:39,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 04:09:39,588 INFO L175 Difference]: Start difference. First operand has 450 places, 660 transitions, 9384 flow. Second operand 8 states and 136 transitions. [2024-06-28 04:09:39,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 679 transitions, 10862 flow [2024-06-28 04:09:44,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 679 transitions, 10766 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 04:09:44,222 INFO L231 Difference]: Finished difference. Result has 449 places, 662 transitions, 9435 flow [2024-06-28 04:09:44,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9288, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9435, PETRI_PLACES=449, PETRI_TRANSITIONS=662} [2024-06-28 04:09:44,222 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 408 predicate places. [2024-06-28 04:09:44,222 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 662 transitions, 9435 flow [2024-06-28 04:09:44,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:44,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:44,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:44,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 04:09:44,223 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:44,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:44,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1935458309, now seen corresponding path program 6 times [2024-06-28 04:09:44,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:44,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456884147] [2024-06-28 04:09:44,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:44,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:45,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:45,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:45,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456884147] [2024-06-28 04:09:45,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456884147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:45,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:45,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:09:45,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671879653] [2024-06-28 04:09:45,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:45,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:09:45,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:45,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:09:45,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:09:45,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:09:45,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 662 transitions, 9435 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:45,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:45,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:09:45,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:46,935 INFO L124 PetriNetUnfolderBase]: 3964/6105 cut-off events. [2024-06-28 04:09:46,935 INFO L125 PetriNetUnfolderBase]: For 592969/592969 co-relation queries the response was YES. [2024-06-28 04:09:47,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51786 conditions, 6105 events. 3964/6105 cut-off events. For 592969/592969 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 35434 event pairs, 743 based on Foata normal form. 2/6106 useless extension candidates. Maximal degree in co-relation 51589. Up to 5901 conditions per place. [2024-06-28 04:09:47,045 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 654 selfloop transitions, 19 changer transitions 0/677 dead transitions. [2024-06-28 04:09:47,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 677 transitions, 10895 flow [2024-06-28 04:09:47,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:09:47,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:09:47,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 04:09:47,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-28 04:09:47,047 INFO L175 Difference]: Start difference. First operand has 449 places, 662 transitions, 9435 flow. Second operand 8 states and 127 transitions. [2024-06-28 04:09:47,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 677 transitions, 10895 flow [2024-06-28 04:09:51,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 677 transitions, 10764 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 04:09:51,498 INFO L231 Difference]: Finished difference. Result has 451 places, 664 transitions, 9421 flow [2024-06-28 04:09:51,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9304, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=643, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9421, PETRI_PLACES=451, PETRI_TRANSITIONS=664} [2024-06-28 04:09:51,498 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 410 predicate places. [2024-06-28 04:09:51,499 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 664 transitions, 9421 flow [2024-06-28 04:09:51,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:51,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:51,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:51,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 04:09:51,499 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:51,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:51,500 INFO L85 PathProgramCache]: Analyzing trace with hash -840074235, now seen corresponding path program 7 times [2024-06-28 04:09:51,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:51,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444973728] [2024-06-28 04:09:51,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:51,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:52,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:52,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:52,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444973728] [2024-06-28 04:09:52,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444973728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:52,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:52,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:09:52,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398192526] [2024-06-28 04:09:52,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:52,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:09:52,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:52,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:09:52,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:09:52,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:09:52,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 664 transitions, 9421 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:52,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:52,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:09:52,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:54,130 INFO L124 PetriNetUnfolderBase]: 3972/6117 cut-off events. [2024-06-28 04:09:54,131 INFO L125 PetriNetUnfolderBase]: For 604670/604670 co-relation queries the response was YES. [2024-06-28 04:09:54,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51982 conditions, 6117 events. 3972/6117 cut-off events. For 604670/604670 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 35535 event pairs, 734 based on Foata normal form. 2/6118 useless extension candidates. Maximal degree in co-relation 51784. Up to 5869 conditions per place. [2024-06-28 04:09:54,237 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 644 selfloop transitions, 38 changer transitions 0/686 dead transitions. [2024-06-28 04:09:54,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 686 transitions, 10931 flow [2024-06-28 04:09:54,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:09:54,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:09:54,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 04:09:54,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434375 [2024-06-28 04:09:54,238 INFO L175 Difference]: Start difference. First operand has 451 places, 664 transitions, 9421 flow. Second operand 8 states and 139 transitions. [2024-06-28 04:09:54,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 686 transitions, 10931 flow [2024-06-28 04:09:58,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 686 transitions, 10830 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-28 04:09:58,235 INFO L231 Difference]: Finished difference. Result has 453 places, 666 transitions, 9479 flow [2024-06-28 04:09:58,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9320, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9479, PETRI_PLACES=453, PETRI_TRANSITIONS=666} [2024-06-28 04:09:58,236 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 412 predicate places. [2024-06-28 04:09:58,236 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 666 transitions, 9479 flow [2024-06-28 04:09:58,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:58,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:58,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:58,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 04:09:58,236 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:58,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:58,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1906922741, now seen corresponding path program 8 times [2024-06-28 04:09:58,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:58,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202577249] [2024-06-28 04:09:58,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:58,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:59,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:59,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:59,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202577249] [2024-06-28 04:09:59,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202577249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:59,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:59,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:09:59,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324732370] [2024-06-28 04:09:59,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:59,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:09:59,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:59,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:09:59,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:09:59,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:09:59,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 666 transitions, 9479 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:59,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:59,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:09:59,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:00,833 INFO L124 PetriNetUnfolderBase]: 3980/6129 cut-off events. [2024-06-28 04:10:00,834 INFO L125 PetriNetUnfolderBase]: For 616104/616104 co-relation queries the response was YES. [2024-06-28 04:10:00,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52293 conditions, 6129 events. 3980/6129 cut-off events. For 616104/616104 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 35635 event pairs, 741 based on Foata normal form. 2/6130 useless extension candidates. Maximal degree in co-relation 52094. Up to 5911 conditions per place. [2024-06-28 04:10:00,945 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 655 selfloop transitions, 22 changer transitions 0/681 dead transitions. [2024-06-28 04:10:00,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 681 transitions, 10949 flow [2024-06-28 04:10:00,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:10:00,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:10:00,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-28 04:10:00,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 04:10:00,946 INFO L175 Difference]: Start difference. First operand has 453 places, 666 transitions, 9479 flow. Second operand 8 states and 128 transitions. [2024-06-28 04:10:00,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 681 transitions, 10949 flow [2024-06-28 04:10:04,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 681 transitions, 10822 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-28 04:10:04,985 INFO L231 Difference]: Finished difference. Result has 456 places, 668 transitions, 9483 flow [2024-06-28 04:10:04,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9352, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=644, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9483, PETRI_PLACES=456, PETRI_TRANSITIONS=668} [2024-06-28 04:10:04,986 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 415 predicate places. [2024-06-28 04:10:04,986 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 668 transitions, 9483 flow [2024-06-28 04:10:04,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:04,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:10:04,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:10:04,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 04:10:04,987 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:10:04,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:10:04,987 INFO L85 PathProgramCache]: Analyzing trace with hash -2103008694, now seen corresponding path program 1 times [2024-06-28 04:10:04,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:10:04,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891536185] [2024-06-28 04:10:04,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:10:04,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:10:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:10:05,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:10:05,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:10:05,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891536185] [2024-06-28 04:10:05,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891536185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:10:05,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:10:05,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:10:05,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573628892] [2024-06-28 04:10:05,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:10:05,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:10:05,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:10:05,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:10:05,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:10:05,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:10:05,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 668 transitions, 9483 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:05,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:10:05,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:10:05,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:07,503 INFO L124 PetriNetUnfolderBase]: 3977/6125 cut-off events. [2024-06-28 04:10:07,504 INFO L125 PetriNetUnfolderBase]: For 616321/616321 co-relation queries the response was YES. [2024-06-28 04:10:07,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52190 conditions, 6125 events. 3977/6125 cut-off events. For 616321/616321 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 35589 event pairs, 739 based on Foata normal form. 1/6125 useless extension candidates. Maximal degree in co-relation 51990. Up to 5907 conditions per place. [2024-06-28 04:10:07,606 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 646 selfloop transitions, 31 changer transitions 0/681 dead transitions. [2024-06-28 04:10:07,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 681 transitions, 10887 flow [2024-06-28 04:10:07,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:10:07,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:10:07,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 04:10:07,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-28 04:10:07,608 INFO L175 Difference]: Start difference. First operand has 456 places, 668 transitions, 9483 flow. Second operand 8 states and 129 transitions. [2024-06-28 04:10:07,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 681 transitions, 10887 flow [2024-06-28 04:10:11,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 681 transitions, 10756 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-28 04:10:11,903 INFO L231 Difference]: Finished difference. Result has 459 places, 668 transitions, 9424 flow [2024-06-28 04:10:11,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9352, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=637, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9424, PETRI_PLACES=459, PETRI_TRANSITIONS=668} [2024-06-28 04:10:11,903 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 418 predicate places. [2024-06-28 04:10:11,904 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 668 transitions, 9424 flow [2024-06-28 04:10:11,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:11,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:10:11,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:10:11,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 04:10:11,904 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:10:11,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:10:11,904 INFO L85 PathProgramCache]: Analyzing trace with hash -2103008477, now seen corresponding path program 9 times [2024-06-28 04:10:11,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:10:11,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667217357] [2024-06-28 04:10:11,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:10:11,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:10:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:10:12,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:10:12,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:10:12,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667217357] [2024-06-28 04:10:12,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667217357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:10:12,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:10:12,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:10:12,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111406006] [2024-06-28 04:10:12,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:10:12,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:10:12,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:10:12,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:10:12,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:10:13,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:10:13,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 668 transitions, 9424 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:13,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:10:13,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:10:13,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:14,617 INFO L124 PetriNetUnfolderBase]: 3985/6137 cut-off events. [2024-06-28 04:10:14,618 INFO L125 PetriNetUnfolderBase]: For 632913/632913 co-relation queries the response was YES. [2024-06-28 04:10:14,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52336 conditions, 6137 events. 3985/6137 cut-off events. For 632913/632913 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 35652 event pairs, 747 based on Foata normal form. 2/6138 useless extension candidates. Maximal degree in co-relation 52135. Up to 5918 conditions per place. [2024-06-28 04:10:14,730 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 650 selfloop transitions, 29 changer transitions 0/683 dead transitions. [2024-06-28 04:10:14,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 683 transitions, 10908 flow [2024-06-28 04:10:14,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:10:14,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:10:14,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-28 04:10:14,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 04:10:14,731 INFO L175 Difference]: Start difference. First operand has 459 places, 668 transitions, 9424 flow. Second operand 8 states and 128 transitions. [2024-06-28 04:10:14,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 683 transitions, 10908 flow [2024-06-28 04:10:19,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 683 transitions, 10848 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 04:10:19,363 INFO L231 Difference]: Finished difference. Result has 461 places, 670 transitions, 9516 flow [2024-06-28 04:10:19,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9364, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=639, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9516, PETRI_PLACES=461, PETRI_TRANSITIONS=670} [2024-06-28 04:10:19,363 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 420 predicate places. [2024-06-28 04:10:19,363 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 670 transitions, 9516 flow [2024-06-28 04:10:19,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:19,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:10:19,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:10:19,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 04:10:19,364 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:10:19,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:10:19,364 INFO L85 PathProgramCache]: Analyzing trace with hash -840224337, now seen corresponding path program 11 times [2024-06-28 04:10:19,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:10:19,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663678179] [2024-06-28 04:10:19,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:10:19,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:10:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:10:20,283 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 04:10:20,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:10:20,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663678179] [2024-06-28 04:10:20,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663678179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:10:20,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:10:20,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:10:20,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423887111] [2024-06-28 04:10:20,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:10:20,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:10:20,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:10:20,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:10:20,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:10:20,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:10:20,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 670 transitions, 9516 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:20,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:10:20,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:10:20,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:22,034 INFO L124 PetriNetUnfolderBase]: 4021/6193 cut-off events. [2024-06-28 04:10:22,034 INFO L125 PetriNetUnfolderBase]: For 689115/689115 co-relation queries the response was YES. [2024-06-28 04:10:22,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53066 conditions, 6193 events. 4021/6193 cut-off events. For 689115/689115 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 36045 event pairs, 739 based on Foata normal form. 10/6202 useless extension candidates. Maximal degree in co-relation 52864. Up to 5855 conditions per place. [2024-06-28 04:10:22,143 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 632 selfloop transitions, 64 changer transitions 0/700 dead transitions. [2024-06-28 04:10:22,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 700 transitions, 11091 flow [2024-06-28 04:10:22,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:10:22,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:10:22,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 04:10:22,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 04:10:22,144 INFO L175 Difference]: Start difference. First operand has 461 places, 670 transitions, 9516 flow. Second operand 9 states and 162 transitions. [2024-06-28 04:10:22,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 700 transitions, 11091 flow [2024-06-28 04:10:26,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 700 transitions, 10959 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-28 04:10:26,520 INFO L231 Difference]: Finished difference. Result has 464 places, 671 transitions, 9550 flow [2024-06-28 04:10:26,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9384, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=606, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9550, PETRI_PLACES=464, PETRI_TRANSITIONS=671} [2024-06-28 04:10:26,520 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 423 predicate places. [2024-06-28 04:10:26,520 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 671 transitions, 9550 flow [2024-06-28 04:10:26,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:26,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:10:26,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:10:26,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 04:10:26,521 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:10:26,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:10:26,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1935250547, now seen corresponding path program 12 times [2024-06-28 04:10:26,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:10:26,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466341281] [2024-06-28 04:10:26,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:10:26,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:10:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:10:27,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:10:27,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:10:27,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466341281] [2024-06-28 04:10:27,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466341281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:10:27,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:10:27,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:10:27,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538700350] [2024-06-28 04:10:27,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:10:27,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:10:27,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:10:27,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:10:27,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:10:27,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:10:27,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 671 transitions, 9550 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:27,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:10:27,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:10:27,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:29,530 INFO L124 PetriNetUnfolderBase]: 4077/6281 cut-off events. [2024-06-28 04:10:29,530 INFO L125 PetriNetUnfolderBase]: For 723803/723803 co-relation queries the response was YES. [2024-06-28 04:10:29,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53910 conditions, 6281 events. 4077/6281 cut-off events. For 723803/723803 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 36657 event pairs, 759 based on Foata normal form. 16/6296 useless extension candidates. Maximal degree in co-relation 53707. Up to 6003 conditions per place. [2024-06-28 04:10:29,628 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 665 selfloop transitions, 23 changer transitions 0/692 dead transitions. [2024-06-28 04:10:29,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 692 transitions, 11117 flow [2024-06-28 04:10:29,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:10:29,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:10:29,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-28 04:10:29,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-28 04:10:29,629 INFO L175 Difference]: Start difference. First operand has 464 places, 671 transitions, 9550 flow. Second operand 9 states and 145 transitions. [2024-06-28 04:10:29,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 692 transitions, 11117 flow [2024-06-28 04:10:33,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 692 transitions, 10999 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 04:10:33,642 INFO L231 Difference]: Finished difference. Result has 467 places, 673 transitions, 9567 flow [2024-06-28 04:10:33,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9432, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=671, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=648, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9567, PETRI_PLACES=467, PETRI_TRANSITIONS=673} [2024-06-28 04:10:33,643 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 426 predicate places. [2024-06-28 04:10:33,643 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 673 transitions, 9567 flow [2024-06-28 04:10:33,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:33,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:10:33,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:10:33,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 04:10:33,644 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:10:33,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:10:33,644 INFO L85 PathProgramCache]: Analyzing trace with hash 557428495, now seen corresponding path program 10 times [2024-06-28 04:10:33,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:10:33,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677725583] [2024-06-28 04:10:33,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:10:33,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:10:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:10:34,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:10:34,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:10:34,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677725583] [2024-06-28 04:10:34,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677725583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:10:34,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:10:34,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:10:34,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343535947] [2024-06-28 04:10:34,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:10:34,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:10:34,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:10:34,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:10:34,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:10:34,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:10:34,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 673 transitions, 9567 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:34,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:10:34,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:10:34,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:36,455 INFO L124 PetriNetUnfolderBase]: 4085/6293 cut-off events. [2024-06-28 04:10:36,455 INFO L125 PetriNetUnfolderBase]: For 662837/662837 co-relation queries the response was YES. [2024-06-28 04:10:36,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54056 conditions, 6293 events. 4085/6293 cut-off events. For 662837/662837 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 36811 event pairs, 763 based on Foata normal form. 2/6294 useless extension candidates. Maximal degree in co-relation 53852. Up to 6046 conditions per place. [2024-06-28 04:10:36,557 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 649 selfloop transitions, 35 changer transitions 0/688 dead transitions. [2024-06-28 04:10:36,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 688 transitions, 11057 flow [2024-06-28 04:10:36,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:10:36,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:10:36,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 04:10:36,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-28 04:10:36,558 INFO L175 Difference]: Start difference. First operand has 467 places, 673 transitions, 9567 flow. Second operand 8 states and 129 transitions. [2024-06-28 04:10:36,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 688 transitions, 11057 flow [2024-06-28 04:10:40,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 688 transitions, 10975 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 04:10:40,613 INFO L231 Difference]: Finished difference. Result has 469 places, 675 transitions, 9651 flow [2024-06-28 04:10:40,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9485, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=638, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9651, PETRI_PLACES=469, PETRI_TRANSITIONS=675} [2024-06-28 04:10:40,614 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 428 predicate places. [2024-06-28 04:10:40,614 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 675 transitions, 9651 flow [2024-06-28 04:10:40,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:40,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:10:40,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:10:40,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 04:10:40,615 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:10:40,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:10:40,615 INFO L85 PathProgramCache]: Analyzing trace with hash 557687965, now seen corresponding path program 11 times [2024-06-28 04:10:40,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:10:40,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124025569] [2024-06-28 04:10:40,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:10:40,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:10:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:10:41,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:10:41,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:10:41,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124025569] [2024-06-28 04:10:41,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124025569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:10:41,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:10:41,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:10:41,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887277860] [2024-06-28 04:10:41,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:10:41,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:10:41,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:10:41,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:10:41,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:10:41,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:10:41,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 675 transitions, 9651 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:41,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:10:41,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:10:41,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:43,358 INFO L124 PetriNetUnfolderBase]: 4093/6305 cut-off events. [2024-06-28 04:10:43,359 INFO L125 PetriNetUnfolderBase]: For 672475/672475 co-relation queries the response was YES. [2024-06-28 04:10:43,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54138 conditions, 6305 events. 4093/6305 cut-off events. For 672475/672475 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 36790 event pairs, 769 based on Foata normal form. 2/6306 useless extension candidates. Maximal degree in co-relation 53933. Up to 6096 conditions per place. [2024-06-28 04:10:43,465 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 667 selfloop transitions, 19 changer transitions 0/690 dead transitions. [2024-06-28 04:10:43,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 690 transitions, 11143 flow [2024-06-28 04:10:43,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:10:43,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:10:43,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 04:10:43,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-28 04:10:43,466 INFO L175 Difference]: Start difference. First operand has 469 places, 675 transitions, 9651 flow. Second operand 8 states and 126 transitions. [2024-06-28 04:10:43,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 690 transitions, 11143 flow [2024-06-28 04:10:48,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 690 transitions, 10989 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-28 04:10:48,257 INFO L231 Difference]: Finished difference. Result has 470 places, 677 transitions, 9632 flow [2024-06-28 04:10:48,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9501, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=656, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9632, PETRI_PLACES=470, PETRI_TRANSITIONS=677} [2024-06-28 04:10:48,258 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 429 predicate places. [2024-06-28 04:10:48,258 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 677 transitions, 9632 flow [2024-06-28 04:10:48,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:48,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:10:48,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:10:48,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 04:10:48,259 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:10:48,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:10:48,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1707257879, now seen corresponding path program 13 times [2024-06-28 04:10:48,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:10:48,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697380905] [2024-06-28 04:10:48,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:10:48,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:10:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:10:49,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:10:49,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:10:49,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697380905] [2024-06-28 04:10:49,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697380905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:10:49,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:10:49,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:10:49,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230560261] [2024-06-28 04:10:49,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:10:49,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:10:49,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:10:49,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:10:49,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:10:49,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:10:49,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 677 transitions, 9632 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:49,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:10:49,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:10:49,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:51,018 INFO L124 PetriNetUnfolderBase]: 4121/6349 cut-off events. [2024-06-28 04:10:51,019 INFO L125 PetriNetUnfolderBase]: For 706609/706609 co-relation queries the response was YES. [2024-06-28 04:10:51,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54369 conditions, 6349 events. 4121/6349 cut-off events. For 706609/706609 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 37113 event pairs, 739 based on Foata normal form. 8/6356 useless extension candidates. Maximal degree in co-relation 54163. Up to 5838 conditions per place. [2024-06-28 04:10:51,136 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 643 selfloop transitions, 68 changer transitions 0/715 dead transitions. [2024-06-28 04:10:51,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 715 transitions, 11506 flow [2024-06-28 04:10:51,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:10:51,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:10:51,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 04:10:51,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46944444444444444 [2024-06-28 04:10:51,137 INFO L175 Difference]: Start difference. First operand has 470 places, 677 transitions, 9632 flow. Second operand 9 states and 169 transitions. [2024-06-28 04:10:51,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 715 transitions, 11506 flow [2024-06-28 04:10:54,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 715 transitions, 11391 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-28 04:10:54,327 INFO L231 Difference]: Finished difference. Result has 474 places, 679 transitions, 9718 flow [2024-06-28 04:10:54,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9517, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=610, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9718, PETRI_PLACES=474, PETRI_TRANSITIONS=679} [2024-06-28 04:10:54,328 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 433 predicate places. [2024-06-28 04:10:54,328 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 679 transitions, 9718 flow [2024-06-28 04:10:54,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:54,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:10:54,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:10:54,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 04:10:54,328 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:10:54,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:10:54,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1707405749, now seen corresponding path program 14 times [2024-06-28 04:10:54,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:10:54,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257872500] [2024-06-28 04:10:54,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:10:54,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:10:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:10:55,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:10:55,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:10:55,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257872500] [2024-06-28 04:10:55,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257872500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:10:55,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:10:55,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:10:55,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181906294] [2024-06-28 04:10:55,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:10:55,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:10:55,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:10:55,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:10:55,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:10:55,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:10:55,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 679 transitions, 9718 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:55,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:10:55,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:10:55,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:57,034 INFO L124 PetriNetUnfolderBase]: 4177/6437 cut-off events. [2024-06-28 04:10:57,034 INFO L125 PetriNetUnfolderBase]: For 768097/768097 co-relation queries the response was YES. [2024-06-28 04:10:57,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55641 conditions, 6437 events. 4177/6437 cut-off events. For 768097/768097 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 37782 event pairs, 780 based on Foata normal form. 16/6452 useless extension candidates. Maximal degree in co-relation 55433. Up to 6115 conditions per place. [2024-06-28 04:10:57,145 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 661 selfloop transitions, 42 changer transitions 0/707 dead transitions. [2024-06-28 04:10:57,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 707 transitions, 11352 flow [2024-06-28 04:10:57,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:10:57,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:10:57,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 04:10:57,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-28 04:10:57,146 INFO L175 Difference]: Start difference. First operand has 474 places, 679 transitions, 9718 flow. Second operand 9 states and 157 transitions. [2024-06-28 04:10:57,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 707 transitions, 11352 flow [2024-06-28 04:11:02,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 707 transitions, 10990 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-28 04:11:02,492 INFO L231 Difference]: Finished difference. Result has 473 places, 681 transitions, 9538 flow [2024-06-28 04:11:02,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9364, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=637, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9538, PETRI_PLACES=473, PETRI_TRANSITIONS=681} [2024-06-28 04:11:02,493 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 432 predicate places. [2024-06-28 04:11:02,493 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 681 transitions, 9538 flow [2024-06-28 04:11:02,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:02,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:02,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:02,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 04:11:02,493 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:11:02,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:02,494 INFO L85 PathProgramCache]: Analyzing trace with hash -834502605, now seen corresponding path program 12 times [2024-06-28 04:11:02,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:02,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274042199] [2024-06-28 04:11:02,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:02,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:03,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:11:03,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:03,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274042199] [2024-06-28 04:11:03,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274042199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:03,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:03,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:11:03,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851388627] [2024-06-28 04:11:03,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:03,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:11:03,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:03,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:11:03,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:11:03,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:11:03,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 681 transitions, 9538 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:03,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:03,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:11:03,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:05,307 INFO L124 PetriNetUnfolderBase]: 4172/6430 cut-off events. [2024-06-28 04:11:05,307 INFO L125 PetriNetUnfolderBase]: For 685289/685289 co-relation queries the response was YES. [2024-06-28 04:11:05,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54350 conditions, 6430 events. 4172/6430 cut-off events. For 685289/685289 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 37763 event pairs, 777 based on Foata normal form. 2/6431 useless extension candidates. Maximal degree in co-relation 54144. Up to 6162 conditions per place. [2024-06-28 04:11:05,426 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 655 selfloop transitions, 41 changer transitions 0/700 dead transitions. [2024-06-28 04:11:05,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 700 transitions, 11076 flow [2024-06-28 04:11:05,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:11:05,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:11:05,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 04:11:05,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 04:11:05,428 INFO L175 Difference]: Start difference. First operand has 473 places, 681 transitions, 9538 flow. Second operand 8 states and 136 transitions. [2024-06-28 04:11:05,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 700 transitions, 11076 flow [2024-06-28 04:11:10,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 700 transitions, 10952 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 04:11:10,289 INFO L231 Difference]: Finished difference. Result has 474 places, 683 transitions, 9595 flow [2024-06-28 04:11:10,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9414, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=640, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9595, PETRI_PLACES=474, PETRI_TRANSITIONS=683} [2024-06-28 04:11:10,289 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 433 predicate places. [2024-06-28 04:11:10,290 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 683 transitions, 9595 flow [2024-06-28 04:11:10,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:10,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:10,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:10,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 04:11:10,290 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:11:10,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:10,290 INFO L85 PathProgramCache]: Analyzing trace with hash -834717807, now seen corresponding path program 15 times [2024-06-28 04:11:10,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:10,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525695194] [2024-06-28 04:11:10,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:10,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:11,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:11:11,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:11,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525695194] [2024-06-28 04:11:11,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525695194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:11,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:11,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:11:11,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760645041] [2024-06-28 04:11:11,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:11,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:11:11,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:11,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:11:11,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:11:11,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:11:11,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 683 transitions, 9595 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:11,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:11,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:11:11,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:13,184 INFO L124 PetriNetUnfolderBase]: 4215/6499 cut-off events. [2024-06-28 04:11:13,184 INFO L125 PetriNetUnfolderBase]: For 767854/767854 co-relation queries the response was YES. [2024-06-28 04:11:13,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54757 conditions, 6499 events. 4215/6499 cut-off events. For 767854/767854 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 38237 event pairs, 788 based on Foata normal form. 16/6514 useless extension candidates. Maximal degree in co-relation 54550. Up to 6177 conditions per place. [2024-06-28 04:11:13,301 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 664 selfloop transitions, 40 changer transitions 0/708 dead transitions. [2024-06-28 04:11:13,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 708 transitions, 11219 flow [2024-06-28 04:11:13,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:11:13,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:11:13,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 04:11:13,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-28 04:11:13,302 INFO L175 Difference]: Start difference. First operand has 474 places, 683 transitions, 9595 flow. Second operand 9 states and 154 transitions. [2024-06-28 04:11:13,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 708 transitions, 11219 flow [2024-06-28 04:11:18,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 708 transitions, 11056 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-28 04:11:18,334 INFO L231 Difference]: Finished difference. Result has 477 places, 685 transitions, 9608 flow [2024-06-28 04:11:18,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9432, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=643, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9608, PETRI_PLACES=477, PETRI_TRANSITIONS=685} [2024-06-28 04:11:18,335 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 436 predicate places. [2024-06-28 04:11:18,335 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 685 transitions, 9608 flow [2024-06-28 04:11:18,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:18,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:18,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:18,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 04:11:18,336 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:11:18,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:18,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1029623974, now seen corresponding path program 1 times [2024-06-28 04:11:18,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:18,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084613237] [2024-06-28 04:11:18,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:18,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:19,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:11:19,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:19,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084613237] [2024-06-28 04:11:19,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084613237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:19,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:19,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:11:19,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718330478] [2024-06-28 04:11:19,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:19,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:11:19,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:19,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:11:19,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:11:19,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:11:19,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 685 transitions, 9608 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:19,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:19,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:11:19,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:21,524 INFO L124 PetriNetUnfolderBase]: 4228/6520 cut-off events. [2024-06-28 04:11:21,525 INFO L125 PetriNetUnfolderBase]: For 697350/697350 co-relation queries the response was YES. [2024-06-28 04:11:21,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55138 conditions, 6520 events. 4228/6520 cut-off events. For 697350/697350 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 38355 event pairs, 772 based on Foata normal form. 1/6520 useless extension candidates. Maximal degree in co-relation 54931. Up to 5674 conditions per place. [2024-06-28 04:11:21,627 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 445 selfloop transitions, 263 changer transitions 0/712 dead transitions. [2024-06-28 04:11:21,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 712 transitions, 11476 flow [2024-06-28 04:11:21,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:11:21,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:11:21,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 04:11:21,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527777777777778 [2024-06-28 04:11:21,628 INFO L175 Difference]: Start difference. First operand has 477 places, 685 transitions, 9608 flow. Second operand 9 states and 163 transitions. [2024-06-28 04:11:21,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 712 transitions, 11476 flow [2024-06-28 04:11:26,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 712 transitions, 11350 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 04:11:26,641 INFO L231 Difference]: Finished difference. Result has 479 places, 691 transitions, 10218 flow [2024-06-28 04:11:26,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9482, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10218, PETRI_PLACES=479, PETRI_TRANSITIONS=691} [2024-06-28 04:11:26,642 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 438 predicate places. [2024-06-28 04:11:26,642 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 691 transitions, 10218 flow [2024-06-28 04:11:26,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:26,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:26,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:26,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 04:11:26,643 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:11:26,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:26,643 INFO L85 PathProgramCache]: Analyzing trace with hash -2037407415, now seen corresponding path program 1 times [2024-06-28 04:11:26,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:26,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969977878] [2024-06-28 04:11:26,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:26,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:27,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:11:27,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:27,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969977878] [2024-06-28 04:11:27,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969977878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:27,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:27,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:11:27,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73889214] [2024-06-28 04:11:27,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:27,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:11:27,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:27,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:11:27,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:11:27,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:11:27,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 691 transitions, 10218 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:27,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:27,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:11:27,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:29,560 INFO L124 PetriNetUnfolderBase]: 4254/6551 cut-off events. [2024-06-28 04:11:29,561 INFO L125 PetriNetUnfolderBase]: For 730373/730373 co-relation queries the response was YES. [2024-06-28 04:11:29,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56588 conditions, 6551 events. 4254/6551 cut-off events. For 730373/730373 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 38504 event pairs, 688 based on Foata normal form. 2/6552 useless extension candidates. Maximal degree in co-relation 56380. Up to 5617 conditions per place. [2024-06-28 04:11:29,671 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 500 selfloop transitions, 224 changer transitions 0/728 dead transitions. [2024-06-28 04:11:29,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 728 transitions, 12288 flow [2024-06-28 04:11:29,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:11:29,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:11:29,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 04:11:29,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-28 04:11:29,673 INFO L175 Difference]: Start difference. First operand has 479 places, 691 transitions, 10218 flow. Second operand 9 states and 164 transitions. [2024-06-28 04:11:29,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 728 transitions, 12288 flow [2024-06-28 04:11:34,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 728 transitions, 11914 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-28 04:11:34,942 INFO L231 Difference]: Finished difference. Result has 482 places, 697 transitions, 10543 flow [2024-06-28 04:11:34,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9846, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10543, PETRI_PLACES=482, PETRI_TRANSITIONS=697} [2024-06-28 04:11:34,942 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 441 predicate places. [2024-06-28 04:11:34,942 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 697 transitions, 10543 flow [2024-06-28 04:11:34,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:34,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:34,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:34,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 04:11:34,943 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:11:34,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:34,943 INFO L85 PathProgramCache]: Analyzing trace with hash 112487995, now seen corresponding path program 2 times [2024-06-28 04:11:34,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:34,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731704571] [2024-06-28 04:11:34,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:34,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:36,040 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 04:11:36,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:36,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731704571] [2024-06-28 04:11:36,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731704571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:36,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:36,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:11:36,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180809659] [2024-06-28 04:11:36,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:36,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:11:36,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:36,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:11:36,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:11:36,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:11:36,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 697 transitions, 10543 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:36,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:36,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:11:36,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:38,132 INFO L124 PetriNetUnfolderBase]: 4280/6585 cut-off events. [2024-06-28 04:11:38,133 INFO L125 PetriNetUnfolderBase]: For 751387/751387 co-relation queries the response was YES. [2024-06-28 04:11:38,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58223 conditions, 6585 events. 4280/6585 cut-off events. For 751387/751387 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 38675 event pairs, 689 based on Foata normal form. 2/6586 useless extension candidates. Maximal degree in co-relation 58014. Up to 5860 conditions per place. [2024-06-28 04:11:38,246 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 538 selfloop transitions, 191 changer transitions 0/733 dead transitions. [2024-06-28 04:11:38,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 733 transitions, 12639 flow [2024-06-28 04:11:38,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:11:38,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:11:38,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-28 04:11:38,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340909090909091 [2024-06-28 04:11:38,248 INFO L175 Difference]: Start difference. First operand has 482 places, 697 transitions, 10543 flow. Second operand 11 states and 191 transitions. [2024-06-28 04:11:38,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 733 transitions, 12639 flow [2024-06-28 04:11:43,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 733 transitions, 12303 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-06-28 04:11:43,039 INFO L231 Difference]: Finished difference. Result has 487 places, 703 transitions, 10855 flow [2024-06-28 04:11:43,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10229, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10855, PETRI_PLACES=487, PETRI_TRANSITIONS=703} [2024-06-28 04:11:43,039 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 446 predicate places. [2024-06-28 04:11:43,039 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 703 transitions, 10855 flow [2024-06-28 04:11:43,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:43,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:43,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:43,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 04:11:43,040 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:11:43,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:43,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1635004198, now seen corresponding path program 2 times [2024-06-28 04:11:43,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:43,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120885410] [2024-06-28 04:11:43,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:43,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:44,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:11:44,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:44,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120885410] [2024-06-28 04:11:44,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120885410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:44,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:44,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:11:44,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585537622] [2024-06-28 04:11:44,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:44,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:11:44,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:44,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:11:44,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:11:44,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:11:44,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 703 transitions, 10855 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:44,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:44,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:11:44,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:46,080 INFO L124 PetriNetUnfolderBase]: 4285/6598 cut-off events. [2024-06-28 04:11:46,080 INFO L125 PetriNetUnfolderBase]: For 744743/744743 co-relation queries the response was YES. [2024-06-28 04:11:46,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58634 conditions, 6598 events. 4285/6598 cut-off events. For 744743/744743 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 38864 event pairs, 772 based on Foata normal form. 1/6598 useless extension candidates. Maximal degree in co-relation 58424. Up to 6158 conditions per place. [2024-06-28 04:11:46,199 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 595 selfloop transitions, 120 changer transitions 0/719 dead transitions. [2024-06-28 04:11:46,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 719 transitions, 12395 flow [2024-06-28 04:11:46,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:11:46,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:11:46,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 04:11:46,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434375 [2024-06-28 04:11:46,200 INFO L175 Difference]: Start difference. First operand has 487 places, 703 transitions, 10855 flow. Second operand 8 states and 139 transitions. [2024-06-28 04:11:46,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 719 transitions, 12395 flow [2024-06-28 04:11:50,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 719 transitions, 12046 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-28 04:11:50,359 INFO L231 Difference]: Finished difference. Result has 487 places, 706 transitions, 10843 flow [2024-06-28 04:11:50,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10506, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10843, PETRI_PLACES=487, PETRI_TRANSITIONS=706} [2024-06-28 04:11:50,360 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 446 predicate places. [2024-06-28 04:11:50,360 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 706 transitions, 10843 flow [2024-06-28 04:11:50,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:50,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:50,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:50,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 04:11:50,361 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:11:50,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:50,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1635004353, now seen corresponding path program 3 times [2024-06-28 04:11:50,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:50,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946848211] [2024-06-28 04:11:50,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:50,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:51,363 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 04:11:51,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:51,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946848211] [2024-06-28 04:11:51,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946848211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:51,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:51,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:11:51,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141142052] [2024-06-28 04:11:51,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:51,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:11:51,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:51,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:11:51,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:11:51,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:11:51,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 706 transitions, 10843 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:51,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:51,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:11:51,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:53,375 INFO L124 PetriNetUnfolderBase]: 4279/6592 cut-off events. [2024-06-28 04:11:53,375 INFO L125 PetriNetUnfolderBase]: For 735486/735486 co-relation queries the response was YES. [2024-06-28 04:11:53,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58295 conditions, 6592 events. 4279/6592 cut-off events. For 735486/735486 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 38837 event pairs, 684 based on Foata normal form. 2/6593 useless extension candidates. Maximal degree in co-relation 58084. Up to 5862 conditions per place. [2024-06-28 04:11:53,479 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 543 selfloop transitions, 186 changer transitions 0/733 dead transitions. [2024-06-28 04:11:53,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 733 transitions, 12479 flow [2024-06-28 04:11:53,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:11:53,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:11:53,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 04:11:53,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 04:11:53,481 INFO L175 Difference]: Start difference. First operand has 487 places, 706 transitions, 10843 flow. Second operand 9 states and 162 transitions. [2024-06-28 04:11:53,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 733 transitions, 12479 flow [2024-06-28 04:11:57,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 733 transitions, 12165 flow, removed 57 selfloop flow, removed 4 redundant places. [2024-06-28 04:11:57,978 INFO L231 Difference]: Finished difference. Result has 492 places, 706 transitions, 10925 flow [2024-06-28 04:11:57,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10533, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=706, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10925, PETRI_PLACES=492, PETRI_TRANSITIONS=706} [2024-06-28 04:11:57,978 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 451 predicate places. [2024-06-28 04:11:57,979 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 706 transitions, 10925 flow [2024-06-28 04:11:57,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:57,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:57,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:57,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 04:11:57,979 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:11:57,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:57,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1918727087, now seen corresponding path program 4 times [2024-06-28 04:11:57,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:57,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944878596] [2024-06-28 04:11:57,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:57,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:58,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:11:58,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:58,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944878596] [2024-06-28 04:11:58,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944878596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:58,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:58,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:11:58,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554032425] [2024-06-28 04:11:58,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:58,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:11:58,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:58,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:11:58,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:11:58,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:11:58,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 706 transitions, 10925 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:58,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:58,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:11:58,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:12:00,787 INFO L124 PetriNetUnfolderBase]: 4305/6636 cut-off events. [2024-06-28 04:12:00,787 INFO L125 PetriNetUnfolderBase]: For 762834/762834 co-relation queries the response was YES. [2024-06-28 04:12:00,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59384 conditions, 6636 events. 4305/6636 cut-off events. For 762834/762834 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 39187 event pairs, 754 based on Foata normal form. 2/6637 useless extension candidates. Maximal degree in co-relation 59172. Up to 5908 conditions per place. [2024-06-28 04:12:00,903 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 577 selfloop transitions, 156 changer transitions 0/737 dead transitions. [2024-06-28 04:12:00,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 737 transitions, 13217 flow [2024-06-28 04:12:00,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:12:00,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:12:00,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 04:12:00,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.459375 [2024-06-28 04:12:00,904 INFO L175 Difference]: Start difference. First operand has 492 places, 706 transitions, 10925 flow. Second operand 8 states and 147 transitions. [2024-06-28 04:12:00,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 737 transitions, 13217 flow [2024-06-28 04:12:05,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 737 transitions, 12825 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 04:12:05,802 INFO L231 Difference]: Finished difference. Result has 491 places, 712 transitions, 11096 flow [2024-06-28 04:12:05,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10537, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=706, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11096, PETRI_PLACES=491, PETRI_TRANSITIONS=712} [2024-06-28 04:12:05,803 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 450 predicate places. [2024-06-28 04:12:05,803 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 712 transitions, 11096 flow [2024-06-28 04:12:05,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:05,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:12:05,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:12:05,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 04:12:05,804 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:12:05,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:12:05,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1873213498, now seen corresponding path program 3 times [2024-06-28 04:12:05,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:12:05,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051614349] [2024-06-28 04:12:05,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:12:05,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:12:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:12:07,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:12:07,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:12:07,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051614349] [2024-06-28 04:12:07,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051614349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:12:07,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:12:07,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:12:07,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180066962] [2024-06-28 04:12:07,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:12:07,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:12:07,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:12:07,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:12:07,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:12:07,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:12:07,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 712 transitions, 11096 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:07,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:12:07,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:12:07,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:12:08,910 INFO L124 PetriNetUnfolderBase]: 4302/6622 cut-off events. [2024-06-28 04:12:08,910 INFO L125 PetriNetUnfolderBase]: For 749828/749828 co-relation queries the response was YES. [2024-06-28 04:12:09,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59117 conditions, 6622 events. 4302/6622 cut-off events. For 749828/749828 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 38973 event pairs, 774 based on Foata normal form. 1/6622 useless extension candidates. Maximal degree in co-relation 58905. Up to 5970 conditions per place. [2024-06-28 04:12:09,030 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 560 selfloop transitions, 166 changer transitions 0/730 dead transitions. [2024-06-28 04:12:09,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 730 transitions, 12602 flow [2024-06-28 04:12:09,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:12:09,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:12:09,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-28 04:12:09,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-06-28 04:12:09,031 INFO L175 Difference]: Start difference. First operand has 491 places, 712 transitions, 11096 flow. Second operand 7 states and 132 transitions. [2024-06-28 04:12:09,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 730 transitions, 12602 flow [2024-06-28 04:12:13,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 730 transitions, 12293 flow, removed 64 selfloop flow, removed 5 redundant places. [2024-06-28 04:12:13,483 INFO L231 Difference]: Finished difference. Result has 493 places, 712 transitions, 11162 flow [2024-06-28 04:12:13,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10787, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11162, PETRI_PLACES=493, PETRI_TRANSITIONS=712} [2024-06-28 04:12:13,483 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 452 predicate places. [2024-06-28 04:12:13,483 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 712 transitions, 11162 flow [2024-06-28 04:12:13,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:13,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:12:13,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:12:13,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 04:12:13,484 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:12:13,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:12:13,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1873213653, now seen corresponding path program 5 times [2024-06-28 04:12:13,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:12:13,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48720611] [2024-06-28 04:12:13,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:12:13,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:12:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:12:14,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:12:14,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:12:14,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48720611] [2024-06-28 04:12:14,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48720611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:12:14,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:12:14,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:12:14,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96365921] [2024-06-28 04:12:14,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:12:14,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:12:14,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:12:14,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:12:14,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:12:14,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:12:14,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 712 transitions, 11162 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:14,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:12:14,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:12:14,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:12:16,383 INFO L124 PetriNetUnfolderBase]: 4296/6624 cut-off events. [2024-06-28 04:12:16,383 INFO L125 PetriNetUnfolderBase]: For 743237/743237 co-relation queries the response was YES. [2024-06-28 04:12:16,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58728 conditions, 6624 events. 4296/6624 cut-off events. For 743237/743237 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 39187 event pairs, 740 based on Foata normal form. 2/6625 useless extension candidates. Maximal degree in co-relation 58516. Up to 5899 conditions per place. [2024-06-28 04:12:16,508 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 566 selfloop transitions, 169 changer transitions 0/739 dead transitions. [2024-06-28 04:12:16,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 739 transitions, 13010 flow [2024-06-28 04:12:16,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:12:16,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:12:16,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 04:12:16,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.465625 [2024-06-28 04:12:16,509 INFO L175 Difference]: Start difference. First operand has 493 places, 712 transitions, 11162 flow. Second operand 8 states and 149 transitions. [2024-06-28 04:12:16,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 739 transitions, 13010 flow [2024-06-28 04:12:22,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 739 transitions, 12559 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-28 04:12:22,265 INFO L231 Difference]: Finished difference. Result has 494 places, 712 transitions, 11065 flow [2024-06-28 04:12:22,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10711, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11065, PETRI_PLACES=494, PETRI_TRANSITIONS=712} [2024-06-28 04:12:22,280 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 453 predicate places. [2024-06-28 04:12:22,280 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 712 transitions, 11065 flow [2024-06-28 04:12:22,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:22,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:12:22,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:12:22,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 04:12:22,281 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:12:22,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:12:22,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1880570883, now seen corresponding path program 6 times [2024-06-28 04:12:22,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:12:22,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042609203] [2024-06-28 04:12:22,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:12:22,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:12:22,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:12:23,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:12:23,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:12:23,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042609203] [2024-06-28 04:12:23,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042609203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:12:23,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:12:23,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:12:23,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557099828] [2024-06-28 04:12:23,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:12:23,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:12:23,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:12:23,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:12:23,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:12:23,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:12:23,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 712 transitions, 11065 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:23,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:12:23,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:12:23,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:12:25,242 INFO L124 PetriNetUnfolderBase]: 4290/6606 cut-off events. [2024-06-28 04:12:25,242 INFO L125 PetriNetUnfolderBase]: For 740201/740201 co-relation queries the response was YES. [2024-06-28 04:12:25,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58414 conditions, 6606 events. 4290/6606 cut-off events. For 740201/740201 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 38907 event pairs, 754 based on Foata normal form. 2/6607 useless extension candidates. Maximal degree in co-relation 58201. Up to 6215 conditions per place. [2024-06-28 04:12:25,348 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 644 selfloop transitions, 77 changer transitions 0/725 dead transitions. [2024-06-28 04:12:25,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 725 transitions, 12575 flow [2024-06-28 04:12:25,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:12:25,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:12:25,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 04:12:25,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-06-28 04:12:25,349 INFO L175 Difference]: Start difference. First operand has 494 places, 712 transitions, 11065 flow. Second operand 7 states and 122 transitions. [2024-06-28 04:12:25,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 725 transitions, 12575 flow [2024-06-28 04:12:31,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 725 transitions, 11992 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-28 04:12:31,042 INFO L231 Difference]: Finished difference. Result has 493 places, 712 transitions, 10651 flow [2024-06-28 04:12:31,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10482, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=635, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10651, PETRI_PLACES=493, PETRI_TRANSITIONS=712} [2024-06-28 04:12:31,042 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 452 predicate places. [2024-06-28 04:12:31,043 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 712 transitions, 10651 flow [2024-06-28 04:12:31,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:31,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:12:31,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:12:31,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 04:12:31,043 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:12:31,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:12:31,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1761988714, now seen corresponding path program 4 times [2024-06-28 04:12:31,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:12:31,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311254049] [2024-06-28 04:12:31,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:12:31,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:12:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:12:31,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:12:31,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:12:31,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311254049] [2024-06-28 04:12:31,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311254049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:12:31,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:12:31,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:12:31,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758585236] [2024-06-28 04:12:31,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:12:31,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:12:31,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:12:31,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:12:31,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:12:32,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:12:32,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 712 transitions, 10651 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:32,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:12:32,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:12:32,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:12:33,978 INFO L124 PetriNetUnfolderBase]: 4295/6615 cut-off events. [2024-06-28 04:12:33,979 INFO L125 PetriNetUnfolderBase]: For 731837/731837 co-relation queries the response was YES. [2024-06-28 04:12:34,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57626 conditions, 6615 events. 4295/6615 cut-off events. For 731837/731837 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 38978 event pairs, 774 based on Foata normal form. 1/6615 useless extension candidates. Maximal degree in co-relation 57414. Up to 5746 conditions per place. [2024-06-28 04:12:34,097 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 477 selfloop transitions, 261 changer transitions 0/742 dead transitions. [2024-06-28 04:12:34,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 742 transitions, 12611 flow [2024-06-28 04:12:34,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:12:34,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:12:34,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 04:12:34,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527777777777778 [2024-06-28 04:12:34,099 INFO L175 Difference]: Start difference. First operand has 493 places, 712 transitions, 10651 flow. Second operand 9 states and 163 transitions. [2024-06-28 04:12:34,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 742 transitions, 12611 flow [2024-06-28 04:12:38,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 742 transitions, 12443 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 04:12:38,484 INFO L231 Difference]: Finished difference. Result has 496 places, 718 transitions, 11207 flow [2024-06-28 04:12:38,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10485, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11207, PETRI_PLACES=496, PETRI_TRANSITIONS=718} [2024-06-28 04:12:38,485 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 455 predicate places. [2024-06-28 04:12:38,485 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 718 transitions, 11207 flow [2024-06-28 04:12:38,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:38,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:12:38,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:12:38,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 04:12:38,485 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:12:38,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:12:38,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1716779762, now seen corresponding path program 1 times [2024-06-28 04:12:38,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:12:38,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942610088] [2024-06-28 04:12:38,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:12:38,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:12:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:12:39,412 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 04:12:39,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:12:39,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942610088] [2024-06-28 04:12:39,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942610088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:12:39,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:12:39,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:12:39,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576260422] [2024-06-28 04:12:39,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:12:39,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:12:39,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:12:39,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:12:39,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:12:39,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:12:39,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 718 transitions, 11207 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:39,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:12:39,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:12:39,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:12:41,467 INFO L124 PetriNetUnfolderBase]: 4409/6774 cut-off events. [2024-06-28 04:12:41,467 INFO L125 PetriNetUnfolderBase]: For 783748/783754 co-relation queries the response was YES. [2024-06-28 04:12:41,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60465 conditions, 6774 events. 4409/6774 cut-off events. For 783748/783754 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 39931 event pairs, 658 based on Foata normal form. 10/6783 useless extension candidates. Maximal degree in co-relation 60253. Up to 5811 conditions per place. [2024-06-28 04:12:41,589 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 561 selfloop transitions, 231 changer transitions 0/796 dead transitions. [2024-06-28 04:12:41,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 796 transitions, 13916 flow [2024-06-28 04:12:41,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:12:41,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:12:41,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 214 transitions. [2024-06-28 04:12:41,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44583333333333336 [2024-06-28 04:12:41,590 INFO L175 Difference]: Start difference. First operand has 496 places, 718 transitions, 11207 flow. Second operand 12 states and 214 transitions. [2024-06-28 04:12:41,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 796 transitions, 13916 flow [2024-06-28 04:12:47,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 796 transitions, 13214 flow, removed 71 selfloop flow, removed 6 redundant places. [2024-06-28 04:12:47,496 INFO L231 Difference]: Finished difference. Result has 504 places, 752 transitions, 11782 flow [2024-06-28 04:12:47,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10569, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=718, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11782, PETRI_PLACES=504, PETRI_TRANSITIONS=752} [2024-06-28 04:12:47,496 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 463 predicate places. [2024-06-28 04:12:47,496 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 752 transitions, 11782 flow [2024-06-28 04:12:47,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:47,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:12:47,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:12:47,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 04:12:47,497 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:12:47,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:12:47,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1670319212, now seen corresponding path program 5 times [2024-06-28 04:12:47,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:12:47,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735942845] [2024-06-28 04:12:47,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:12:47,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:12:47,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:12:48,484 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 04:12:48,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:12:48,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735942845] [2024-06-28 04:12:48,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735942845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:12:48,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:12:48,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:12:48,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3825615] [2024-06-28 04:12:48,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:12:48,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:12:48,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:12:48,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:12:48,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:12:48,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:12:48,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 752 transitions, 11782 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:48,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:12:48,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:12:48,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:12:50,449 INFO L124 PetriNetUnfolderBase]: 4419/6791 cut-off events. [2024-06-28 04:12:50,450 INFO L125 PetriNetUnfolderBase]: For 780524/780524 co-relation queries the response was YES. [2024-06-28 04:12:50,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61479 conditions, 6791 events. 4419/6791 cut-off events. For 780524/780524 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 40016 event pairs, 779 based on Foata normal form. 1/6791 useless extension candidates. Maximal degree in co-relation 61264. Up to 5885 conditions per place. [2024-06-28 04:12:50,571 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 486 selfloop transitions, 289 changer transitions 0/779 dead transitions. [2024-06-28 04:12:50,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 779 transitions, 13715 flow [2024-06-28 04:12:50,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:12:50,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:12:50,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 04:12:50,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-28 04:12:50,573 INFO L175 Difference]: Start difference. First operand has 504 places, 752 transitions, 11782 flow. Second operand 9 states and 161 transitions. [2024-06-28 04:12:50,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 779 transitions, 13715 flow [2024-06-28 04:12:56,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 779 transitions, 13355 flow, removed 73 selfloop flow, removed 8 redundant places. [2024-06-28 04:12:56,491 INFO L231 Difference]: Finished difference. Result has 505 places, 758 transitions, 12104 flow [2024-06-28 04:12:56,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11424, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12104, PETRI_PLACES=505, PETRI_TRANSITIONS=758} [2024-06-28 04:12:56,491 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 464 predicate places. [2024-06-28 04:12:56,491 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 758 transitions, 12104 flow [2024-06-28 04:12:56,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:56,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:12:56,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:12:56,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 04:12:56,492 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:12:56,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:12:56,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1719575900, now seen corresponding path program 6 times [2024-06-28 04:12:56,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:12:56,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582828523] [2024-06-28 04:12:56,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:12:56,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:12:56,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:12:57,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:12:57,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:12:57,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582828523] [2024-06-28 04:12:57,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582828523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:12:57,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:12:57,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:12:57,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158862830] [2024-06-28 04:12:57,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:12:57,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:12:57,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:12:57,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:12:57,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:12:57,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:12:57,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 758 transitions, 12104 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:57,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:12:57,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:12:57,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:12:59,683 INFO L124 PetriNetUnfolderBase]: 4439/6830 cut-off events. [2024-06-28 04:12:59,683 INFO L125 PetriNetUnfolderBase]: For 778551/778557 co-relation queries the response was YES. [2024-06-28 04:12:59,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61990 conditions, 6830 events. 4439/6830 cut-off events. For 778551/778557 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 40449 event pairs, 760 based on Foata normal form. 7/6836 useless extension candidates. Maximal degree in co-relation 61774. Up to 6240 conditions per place. [2024-06-28 04:12:59,796 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 603 selfloop transitions, 182 changer transitions 0/789 dead transitions. [2024-06-28 04:12:59,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 789 transitions, 13930 flow [2024-06-28 04:12:59,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:12:59,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:12:59,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 04:12:59,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42 [2024-06-28 04:12:59,797 INFO L175 Difference]: Start difference. First operand has 505 places, 758 transitions, 12104 flow. Second operand 10 states and 168 transitions. [2024-06-28 04:12:59,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 789 transitions, 13930 flow [2024-06-28 04:13:05,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 789 transitions, 13406 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 04:13:05,880 INFO L231 Difference]: Finished difference. Result has 510 places, 770 transitions, 12157 flow [2024-06-28 04:13:05,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11598, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12157, PETRI_PLACES=510, PETRI_TRANSITIONS=770} [2024-06-28 04:13:05,881 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 469 predicate places. [2024-06-28 04:13:05,881 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 770 transitions, 12157 flow [2024-06-28 04:13:05,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:05,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:13:05,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:13:05,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 04:13:05,882 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:13:05,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:13:05,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1835052016, now seen corresponding path program 1 times [2024-06-28 04:13:05,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:13:05,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167836021] [2024-06-28 04:13:05,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:13:05,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:13:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:13:06,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:13:06,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:13:06,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167836021] [2024-06-28 04:13:06,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167836021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:13:06,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:13:06,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:13:06,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288195456] [2024-06-28 04:13:06,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:13:06,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:13:06,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:13:06,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:13:06,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:13:07,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:13:07,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 770 transitions, 12157 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:07,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:13:07,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:13:07,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:13:08,986 INFO L124 PetriNetUnfolderBase]: 4483/6903 cut-off events. [2024-06-28 04:13:08,986 INFO L125 PetriNetUnfolderBase]: For 863913/863913 co-relation queries the response was YES. [2024-06-28 04:13:09,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62525 conditions, 6903 events. 4483/6903 cut-off events. For 863913/863913 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 41047 event pairs, 701 based on Foata normal form. 12/6914 useless extension candidates. Maximal degree in co-relation 62308. Up to 6231 conditions per place. [2024-06-28 04:13:09,114 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 648 selfloop transitions, 146 changer transitions 0/798 dead transitions. [2024-06-28 04:13:09,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 798 transitions, 14000 flow [2024-06-28 04:13:09,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:13:09,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:13:09,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 04:13:09,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 04:13:09,115 INFO L175 Difference]: Start difference. First operand has 510 places, 770 transitions, 12157 flow. Second operand 9 states and 160 transitions. [2024-06-28 04:13:09,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 798 transitions, 14000 flow [2024-06-28 04:13:13,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 798 transitions, 13619 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 04:13:13,977 INFO L231 Difference]: Finished difference. Result has 513 places, 771 transitions, 12110 flow [2024-06-28 04:13:13,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11776, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12110, PETRI_PLACES=513, PETRI_TRANSITIONS=771} [2024-06-28 04:13:13,977 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 472 predicate places. [2024-06-28 04:13:13,978 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 771 transitions, 12110 flow [2024-06-28 04:13:13,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:13,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:13:13,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:13:13,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 04:13:13,978 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:13:13,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:13:13,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1591100184, now seen corresponding path program 2 times [2024-06-28 04:13:13,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:13:13,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516377744] [2024-06-28 04:13:13,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:13:13,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:13:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:13:15,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:13:15,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:13:15,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516377744] [2024-06-28 04:13:15,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516377744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:13:15,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:13:15,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:13:15,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90222069] [2024-06-28 04:13:15,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:13:15,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:13:15,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:13:15,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:13:15,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:13:15,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:13:15,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 771 transitions, 12110 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:15,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:13:15,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:13:15,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:13:17,259 INFO L124 PetriNetUnfolderBase]: 4503/6932 cut-off events. [2024-06-28 04:13:17,260 INFO L125 PetriNetUnfolderBase]: For 827562/827568 co-relation queries the response was YES. [2024-06-28 04:13:17,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62971 conditions, 6932 events. 4503/6932 cut-off events. For 827562/827568 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 41292 event pairs, 692 based on Foata normal form. 10/6941 useless extension candidates. Maximal degree in co-relation 62753. Up to 6353 conditions per place. [2024-06-28 04:13:17,388 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 676 selfloop transitions, 124 changer transitions 0/804 dead transitions. [2024-06-28 04:13:17,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 804 transitions, 13996 flow [2024-06-28 04:13:17,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:13:17,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:13:17,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-28 04:13:17,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 04:13:17,389 INFO L175 Difference]: Start difference. First operand has 513 places, 771 transitions, 12110 flow. Second operand 10 states and 175 transitions. [2024-06-28 04:13:17,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 804 transitions, 13996 flow [2024-06-28 04:13:23,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 804 transitions, 13706 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 04:13:23,304 INFO L231 Difference]: Finished difference. Result has 516 places, 775 transitions, 12182 flow [2024-06-28 04:13:23,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11820, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12182, PETRI_PLACES=516, PETRI_TRANSITIONS=775} [2024-06-28 04:13:23,305 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 475 predicate places. [2024-06-28 04:13:23,305 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 775 transitions, 12182 flow [2024-06-28 04:13:23,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:23,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:13:23,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:13:23,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 04:13:23,306 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:13:23,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:13:23,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1788406892, now seen corresponding path program 7 times [2024-06-28 04:13:23,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:13:23,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110475897] [2024-06-28 04:13:23,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:13:23,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:13:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:13:24,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:13:24,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:13:24,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110475897] [2024-06-28 04:13:24,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110475897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:13:24,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:13:24,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:13:24,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479336909] [2024-06-28 04:13:24,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:13:24,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:13:24,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:13:24,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:13:24,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:13:24,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:13:24,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 775 transitions, 12182 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:24,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:13:24,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:13:24,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:13:26,746 INFO L124 PetriNetUnfolderBase]: 4528/6971 cut-off events. [2024-06-28 04:13:26,746 INFO L125 PetriNetUnfolderBase]: For 818681/818687 co-relation queries the response was YES. [2024-06-28 04:13:26,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63384 conditions, 6971 events. 4528/6971 cut-off events. For 818681/818687 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 41547 event pairs, 774 based on Foata normal form. 7/6977 useless extension candidates. Maximal degree in co-relation 63165. Up to 6521 conditions per place. [2024-06-28 04:13:26,871 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 674 selfloop transitions, 128 changer transitions 0/806 dead transitions. [2024-06-28 04:13:26,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 806 transitions, 14097 flow [2024-06-28 04:13:26,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:13:26,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:13:26,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 04:13:26,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41 [2024-06-28 04:13:26,872 INFO L175 Difference]: Start difference. First operand has 516 places, 775 transitions, 12182 flow. Second operand 10 states and 164 transitions. [2024-06-28 04:13:26,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 806 transitions, 14097 flow [2024-06-28 04:13:34,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 806 transitions, 13781 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-28 04:13:34,020 INFO L231 Difference]: Finished difference. Result has 518 places, 790 transitions, 12400 flow [2024-06-28 04:13:34,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11878, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=775, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12400, PETRI_PLACES=518, PETRI_TRANSITIONS=790} [2024-06-28 04:13:34,021 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 477 predicate places. [2024-06-28 04:13:34,224 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 790 transitions, 12400 flow [2024-06-28 04:13:34,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:34,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:13:34,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:13:34,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 04:13:34,224 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:13:34,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:13:34,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1637387382, now seen corresponding path program 3 times [2024-06-28 04:13:34,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:13:34,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636118612] [2024-06-28 04:13:34,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:13:34,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:13:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:13:35,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:13:35,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:13:35,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636118612] [2024-06-28 04:13:35,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636118612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:13:35,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:13:35,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:13:35,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10895250] [2024-06-28 04:13:35,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:13:35,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:13:35,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:13:35,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:13:35,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:13:35,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:13:35,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 790 transitions, 12400 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:35,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:13:35,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:13:35,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:13:37,565 INFO L124 PetriNetUnfolderBase]: 4538/6987 cut-off events. [2024-06-28 04:13:37,565 INFO L125 PetriNetUnfolderBase]: For 835714/835720 co-relation queries the response was YES. [2024-06-28 04:13:37,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63384 conditions, 6987 events. 4538/6987 cut-off events. For 835714/835720 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 41737 event pairs, 684 based on Foata normal form. 8/6994 useless extension candidates. Maximal degree in co-relation 63164. Up to 6544 conditions per place. [2024-06-28 04:13:37,699 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 734 selfloop transitions, 111 changer transitions 0/849 dead transitions. [2024-06-28 04:13:37,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 849 transitions, 14774 flow [2024-06-28 04:13:37,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:13:37,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:13:37,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 197 transitions. [2024-06-28 04:13:37,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41041666666666665 [2024-06-28 04:13:37,717 INFO L175 Difference]: Start difference. First operand has 518 places, 790 transitions, 12400 flow. Second operand 12 states and 197 transitions. [2024-06-28 04:13:37,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 849 transitions, 14774 flow [2024-06-28 04:13:45,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 849 transitions, 14499 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-28 04:13:45,146 INFO L231 Difference]: Finished difference. Result has 531 places, 826 transitions, 13131 flow [2024-06-28 04:13:45,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12125, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=790, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=683, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13131, PETRI_PLACES=531, PETRI_TRANSITIONS=826} [2024-06-28 04:13:45,147 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 490 predicate places. [2024-06-28 04:13:45,147 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 826 transitions, 13131 flow [2024-06-28 04:13:45,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:45,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:13:45,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:13:45,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 04:13:45,148 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:13:45,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:13:45,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1788407264, now seen corresponding path program 4 times [2024-06-28 04:13:45,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:13:45,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394818199] [2024-06-28 04:13:45,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:13:45,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:13:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:13:46,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:13:46,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:13:46,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394818199] [2024-06-28 04:13:46,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394818199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:13:46,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:13:46,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:13:46,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503639464] [2024-06-28 04:13:46,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:13:46,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:13:46,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:13:46,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:13:46,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:13:46,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:13:46,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 826 transitions, 13131 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:46,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:13:46,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:13:46,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:13:48,218 INFO L124 PetriNetUnfolderBase]: 4574/7033 cut-off events. [2024-06-28 04:13:48,218 INFO L125 PetriNetUnfolderBase]: For 881226/881232 co-relation queries the response was YES. [2024-06-28 04:13:48,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64921 conditions, 7033 events. 4574/7033 cut-off events. For 881226/881232 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 41878 event pairs, 676 based on Foata normal form. 10/7042 useless extension candidates. Maximal degree in co-relation 64693. Up to 6376 conditions per place. [2024-06-28 04:13:48,351 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 681 selfloop transitions, 175 changer transitions 0/860 dead transitions. [2024-06-28 04:13:48,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 860 transitions, 15422 flow [2024-06-28 04:13:48,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:13:48,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:13:48,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-28 04:13:48,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43863636363636366 [2024-06-28 04:13:48,352 INFO L175 Difference]: Start difference. First operand has 531 places, 826 transitions, 13131 flow. Second operand 11 states and 193 transitions. [2024-06-28 04:13:48,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 860 transitions, 15422 flow [2024-06-28 04:13:55,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 860 transitions, 15276 flow, removed 54 selfloop flow, removed 3 redundant places. [2024-06-28 04:13:55,015 INFO L231 Difference]: Finished difference. Result has 540 places, 835 transitions, 13631 flow [2024-06-28 04:13:55,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12993, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=826, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13631, PETRI_PLACES=540, PETRI_TRANSITIONS=835} [2024-06-28 04:13:55,016 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 499 predicate places. [2024-06-28 04:13:55,016 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 835 transitions, 13631 flow [2024-06-28 04:13:55,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:55,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:13:55,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:13:55,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 04:13:55,016 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:13:55,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:13:55,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1993889020, now seen corresponding path program 2 times [2024-06-28 04:13:55,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:13:55,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313913794] [2024-06-28 04:13:55,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:13:55,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:13:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:13:56,087 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 04:13:56,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:13:56,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313913794] [2024-06-28 04:13:56,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313913794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:13:56,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:13:56,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:13:56,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885449051] [2024-06-28 04:13:56,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:13:56,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:13:56,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:13:56,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:13:56,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:13:56,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:13:56,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 835 transitions, 13631 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:56,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:13:56,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:13:56,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:13:58,432 INFO L124 PetriNetUnfolderBase]: 4654/7159 cut-off events. [2024-06-28 04:13:58,432 INFO L125 PetriNetUnfolderBase]: For 956884/956890 co-relation queries the response was YES. [2024-06-28 04:13:58,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66535 conditions, 7159 events. 4654/7159 cut-off events. For 956884/956890 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 42835 event pairs, 692 based on Foata normal form. 18/7176 useless extension candidates. Maximal degree in co-relation 66304. Up to 6581 conditions per place. [2024-06-28 04:13:58,570 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 752 selfloop transitions, 105 changer transitions 0/861 dead transitions. [2024-06-28 04:13:58,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 861 transitions, 15593 flow [2024-06-28 04:13:58,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:13:58,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:13:58,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 04:13:58,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446875 [2024-06-28 04:13:58,571 INFO L175 Difference]: Start difference. First operand has 540 places, 835 transitions, 13631 flow. Second operand 8 states and 143 transitions. [2024-06-28 04:13:58,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 861 transitions, 15593 flow [2024-06-28 04:14:04,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 861 transitions, 15330 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-28 04:14:04,594 INFO L231 Difference]: Finished difference. Result has 540 places, 837 transitions, 13656 flow [2024-06-28 04:14:04,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13368, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=835, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=730, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13656, PETRI_PLACES=540, PETRI_TRANSITIONS=837} [2024-06-28 04:14:04,595 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 499 predicate places. [2024-06-28 04:14:04,595 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 837 transitions, 13656 flow [2024-06-28 04:14:04,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:04,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:04,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:04,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 04:14:04,596 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:14:04,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:04,596 INFO L85 PathProgramCache]: Analyzing trace with hash -2064902916, now seen corresponding path program 3 times [2024-06-28 04:14:04,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:04,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962840221] [2024-06-28 04:14:04,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:04,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:05,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:05,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:05,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962840221] [2024-06-28 04:14:05,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962840221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:05,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:05,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:14:05,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324388055] [2024-06-28 04:14:05,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:05,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:14:05,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:05,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:14:05,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:14:05,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:14:05,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 837 transitions, 13656 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:05,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:05,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:14:05,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:07,886 INFO L124 PetriNetUnfolderBase]: 4698/7240 cut-off events. [2024-06-28 04:14:07,886 INFO L125 PetriNetUnfolderBase]: For 959623/959623 co-relation queries the response was YES. [2024-06-28 04:14:07,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67425 conditions, 7240 events. 4698/7240 cut-off events. For 959623/959623 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 43581 event pairs, 808 based on Foata normal form. 12/7251 useless extension candidates. Maximal degree in co-relation 67193. Up to 6747 conditions per place. [2024-06-28 04:14:08,025 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 762 selfloop transitions, 89 changer transitions 0/855 dead transitions. [2024-06-28 04:14:08,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 855 transitions, 15547 flow [2024-06-28 04:14:08,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:14:08,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:14:08,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-28 04:14:08,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-28 04:14:08,026 INFO L175 Difference]: Start difference. First operand has 540 places, 837 transitions, 13656 flow. Second operand 7 states and 125 transitions. [2024-06-28 04:14:08,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 855 transitions, 15547 flow [2024-06-28 04:14:16,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 855 transitions, 15349 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 04:14:16,085 INFO L231 Difference]: Finished difference. Result has 541 places, 838 transitions, 13690 flow [2024-06-28 04:14:16,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13458, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=837, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=748, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13690, PETRI_PLACES=541, PETRI_TRANSITIONS=838} [2024-06-28 04:14:16,085 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 500 predicate places. [2024-06-28 04:14:16,085 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 838 transitions, 13690 flow [2024-06-28 04:14:16,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:16,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:16,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:16,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 04:14:16,086 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:14:16,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:16,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1993704446, now seen corresponding path program 5 times [2024-06-28 04:14:16,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:16,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070848983] [2024-06-28 04:14:16,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:16,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:16,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:16,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:16,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070848983] [2024-06-28 04:14:16,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070848983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:16,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:16,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:14:16,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748388490] [2024-06-28 04:14:16,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:16,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:14:16,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:16,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:14:16,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:14:16,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:14:16,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 838 transitions, 13690 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:16,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:16,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:14:16,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:19,162 INFO L124 PetriNetUnfolderBase]: 4724/7259 cut-off events. [2024-06-28 04:14:19,163 INFO L125 PetriNetUnfolderBase]: For 917457/917463 co-relation queries the response was YES. [2024-06-28 04:14:19,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68125 conditions, 7259 events. 4724/7259 cut-off events. For 917457/917463 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 43435 event pairs, 758 based on Foata normal form. 8/7266 useless extension candidates. Maximal degree in co-relation 67892. Up to 6743 conditions per place. [2024-06-28 04:14:19,294 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 749 selfloop transitions, 132 changer transitions 0/885 dead transitions. [2024-06-28 04:14:19,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 885 transitions, 16486 flow [2024-06-28 04:14:19,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:14:19,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:14:19,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 04:14:19,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-06-28 04:14:19,296 INFO L175 Difference]: Start difference. First operand has 541 places, 838 transitions, 13690 flow. Second operand 9 states and 166 transitions. [2024-06-28 04:14:19,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 885 transitions, 16486 flow [2024-06-28 04:14:25,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 885 transitions, 16345 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 04:14:25,056 INFO L231 Difference]: Finished difference. Result has 548 places, 858 transitions, 14389 flow [2024-06-28 04:14:25,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13549, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=838, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=711, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14389, PETRI_PLACES=548, PETRI_TRANSITIONS=858} [2024-06-28 04:14:25,057 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 507 predicate places. [2024-06-28 04:14:25,057 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 858 transitions, 14389 flow [2024-06-28 04:14:25,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:25,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:25,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:25,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 04:14:25,058 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:14:25,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:25,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1432090200, now seen corresponding path program 6 times [2024-06-28 04:14:25,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:25,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773126657] [2024-06-28 04:14:25,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:25,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:26,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:26,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:26,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773126657] [2024-06-28 04:14:26,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773126657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:26,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:26,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:14:26,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334734418] [2024-06-28 04:14:26,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:26,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:14:26,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:26,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:14:26,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:14:26,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:14:26,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 858 transitions, 14389 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:26,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:26,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:14:26,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:28,399 INFO L124 PetriNetUnfolderBase]: 4744/7281 cut-off events. [2024-06-28 04:14:28,399 INFO L125 PetriNetUnfolderBase]: For 952585/952591 co-relation queries the response was YES. [2024-06-28 04:14:28,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69565 conditions, 7281 events. 4744/7281 cut-off events. For 952585/952591 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 43585 event pairs, 774 based on Foata normal form. 10/7290 useless extension candidates. Maximal degree in co-relation 69329. Up to 6723 conditions per place. [2024-06-28 04:14:28,542 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 767 selfloop transitions, 117 changer transitions 0/888 dead transitions. [2024-06-28 04:14:28,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 888 transitions, 16519 flow [2024-06-28 04:14:28,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:14:28,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:14:28,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 04:14:28,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-28 04:14:28,544 INFO L175 Difference]: Start difference. First operand has 548 places, 858 transitions, 14389 flow. Second operand 9 states and 159 transitions. [2024-06-28 04:14:28,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 888 transitions, 16519 flow [2024-06-28 04:14:33,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 888 transitions, 16317 flow, removed 56 selfloop flow, removed 5 redundant places. [2024-06-28 04:14:33,914 INFO L231 Difference]: Finished difference. Result has 552 places, 864 transitions, 14654 flow [2024-06-28 04:14:33,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14211, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=858, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=741, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14654, PETRI_PLACES=552, PETRI_TRANSITIONS=864} [2024-06-28 04:14:33,917 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 511 predicate places. [2024-06-28 04:14:33,917 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 864 transitions, 14654 flow [2024-06-28 04:14:33,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:33,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:33,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:33,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 04:14:33,918 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:14:33,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:33,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1993709096, now seen corresponding path program 7 times [2024-06-28 04:14:33,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:33,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828189748] [2024-06-28 04:14:33,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:33,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:34,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:34,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:34,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828189748] [2024-06-28 04:14:34,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828189748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:34,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:34,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:14:34,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015362314] [2024-06-28 04:14:34,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:34,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:14:34,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:34,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:14:34,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:14:34,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:14:34,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 864 transitions, 14654 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:34,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:34,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:14:34,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:37,185 INFO L124 PetriNetUnfolderBase]: 4764/7325 cut-off events. [2024-06-28 04:14:37,185 INFO L125 PetriNetUnfolderBase]: For 955785/955791 co-relation queries the response was YES. [2024-06-28 04:14:37,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70141 conditions, 7325 events. 4764/7325 cut-off events. For 955785/955791 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 44003 event pairs, 774 based on Foata normal form. 10/7334 useless extension candidates. Maximal degree in co-relation 69904. Up to 6751 conditions per place. [2024-06-28 04:14:37,341 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 762 selfloop transitions, 129 changer transitions 0/895 dead transitions. [2024-06-28 04:14:37,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 895 transitions, 16765 flow [2024-06-28 04:14:37,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:14:37,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:14:37,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 04:14:37,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 04:14:37,343 INFO L175 Difference]: Start difference. First operand has 552 places, 864 transitions, 14654 flow. Second operand 9 states and 162 transitions. [2024-06-28 04:14:37,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 895 transitions, 16765 flow [2024-06-28 04:14:44,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 895 transitions, 16423 flow, removed 60 selfloop flow, removed 7 redundant places. [2024-06-28 04:14:44,265 INFO L231 Difference]: Finished difference. Result has 554 places, 870 transitions, 14791 flow [2024-06-28 04:14:44,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14312, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=864, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=735, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14791, PETRI_PLACES=554, PETRI_TRANSITIONS=870} [2024-06-28 04:14:44,265 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 513 predicate places. [2024-06-28 04:14:44,265 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 870 transitions, 14791 flow [2024-06-28 04:14:44,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:44,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:44,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:44,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 04:14:44,266 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:14:44,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:44,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1297668270, now seen corresponding path program 8 times [2024-06-28 04:14:44,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:44,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800742169] [2024-06-28 04:14:44,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:44,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:45,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:45,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:45,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800742169] [2024-06-28 04:14:45,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800742169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:45,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:45,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:14:45,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073076066] [2024-06-28 04:14:45,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:45,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:14:45,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:45,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:14:45,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:14:45,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:14:45,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 870 transitions, 14791 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:45,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:45,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:14:45,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:47,979 INFO L124 PetriNetUnfolderBase]: 4771/7335 cut-off events. [2024-06-28 04:14:47,979 INFO L125 PetriNetUnfolderBase]: For 936800/936806 co-relation queries the response was YES. [2024-06-28 04:14:48,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70157 conditions, 7335 events. 4771/7335 cut-off events. For 936800/936806 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 44019 event pairs, 816 based on Foata normal form. 7/7341 useless extension candidates. Maximal degree in co-relation 69919. Up to 6763 conditions per place. [2024-06-28 04:14:48,111 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 763 selfloop transitions, 136 changer transitions 0/903 dead transitions. [2024-06-28 04:14:48,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 903 transitions, 16798 flow [2024-06-28 04:14:48,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:14:48,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:14:48,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 04:14:48,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 04:14:48,112 INFO L175 Difference]: Start difference. First operand has 554 places, 870 transitions, 14791 flow. Second operand 9 states and 165 transitions. [2024-06-28 04:14:48,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 903 transitions, 16798 flow [2024-06-28 04:14:56,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 903 transitions, 16370 flow, removed 88 selfloop flow, removed 7 redundant places. [2024-06-28 04:14:56,594 INFO L231 Difference]: Finished difference. Result has 556 places, 876 transitions, 14772 flow [2024-06-28 04:14:56,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14369, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=870, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=740, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14772, PETRI_PLACES=556, PETRI_TRANSITIONS=876} [2024-06-28 04:14:56,595 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 515 predicate places. [2024-06-28 04:14:56,595 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 876 transitions, 14772 flow [2024-06-28 04:14:56,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:56,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:56,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:56,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 04:14:56,595 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:14:56,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:56,596 INFO L85 PathProgramCache]: Analyzing trace with hash -2027676216, now seen corresponding path program 8 times [2024-06-28 04:14:56,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:56,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874502994] [2024-06-28 04:14:56,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:56,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:57,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:57,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:57,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874502994] [2024-06-28 04:14:57,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874502994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:57,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:57,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:14:57,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342144205] [2024-06-28 04:14:57,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:57,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:14:57,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:57,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:14:57,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:14:57,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:14:57,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 876 transitions, 14772 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:57,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:57,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:14:57,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:59,830 INFO L124 PetriNetUnfolderBase]: 4764/7336 cut-off events. [2024-06-28 04:14:59,830 INFO L125 PetriNetUnfolderBase]: For 940230/940236 co-relation queries the response was YES. [2024-06-28 04:14:59,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69575 conditions, 7336 events. 4764/7336 cut-off events. For 940230/940236 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 44228 event pairs, 796 based on Foata normal form. 9/7344 useless extension candidates. Maximal degree in co-relation 69336. Up to 6986 conditions per place. [2024-06-28 04:14:59,984 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 820 selfloop transitions, 69 changer transitions 0/893 dead transitions. [2024-06-28 04:14:59,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 893 transitions, 16887 flow [2024-06-28 04:14:59,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:14:59,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:14:59,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 04:14:59,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-28 04:14:59,985 INFO L175 Difference]: Start difference. First operand has 556 places, 876 transitions, 14772 flow. Second operand 8 states and 135 transitions. [2024-06-28 04:14:59,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 893 transitions, 16887 flow [2024-06-28 04:15:07,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 893 transitions, 16588 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-28 04:15:07,627 INFO L231 Difference]: Finished difference. Result has 560 places, 878 transitions, 14698 flow [2024-06-28 04:15:07,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14473, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=876, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=807, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14698, PETRI_PLACES=560, PETRI_TRANSITIONS=878} [2024-06-28 04:15:07,627 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 519 predicate places. [2024-06-28 04:15:07,628 INFO L495 AbstractCegarLoop]: Abstraction has has 560 places, 878 transitions, 14698 flow [2024-06-28 04:15:07,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:07,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:07,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:07,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 04:15:07,628 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:07,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:07,628 INFO L85 PathProgramCache]: Analyzing trace with hash 2000384140, now seen corresponding path program 4 times [2024-06-28 04:15:07,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:07,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924890391] [2024-06-28 04:15:07,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:07,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:08,434 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 04:15:08,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:08,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924890391] [2024-06-28 04:15:08,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924890391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:08,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:08,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:15:08,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424794070] [2024-06-28 04:15:08,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:08,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:15:08,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:08,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:15:08,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:15:08,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:15:08,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 878 transitions, 14698 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:08,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:08,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:15:08,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:10,792 INFO L124 PetriNetUnfolderBase]: 4836/7445 cut-off events. [2024-06-28 04:15:10,792 INFO L125 PetriNetUnfolderBase]: For 1027083/1027083 co-relation queries the response was YES. [2024-06-28 04:15:10,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70590 conditions, 7445 events. 4836/7445 cut-off events. For 1027083/1027083 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 44959 event pairs, 815 based on Foata normal form. 12/7456 useless extension candidates. Maximal degree in co-relation 70348. Up to 6961 conditions per place. [2024-06-28 04:15:10,992 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 829 selfloop transitions, 68 changer transitions 0/901 dead transitions. [2024-06-28 04:15:10,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 901 transitions, 16795 flow [2024-06-28 04:15:11,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:15:11,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:15:11,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-28 04:15:11,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45357142857142857 [2024-06-28 04:15:11,005 INFO L175 Difference]: Start difference. First operand has 560 places, 878 transitions, 14698 flow. Second operand 7 states and 127 transitions. [2024-06-28 04:15:11,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 901 transitions, 16795 flow [2024-06-28 04:15:18,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 901 transitions, 16645 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 04:15:18,645 INFO L231 Difference]: Finished difference. Result has 563 places, 882 transitions, 14786 flow [2024-06-28 04:15:18,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14548, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=878, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=810, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14786, PETRI_PLACES=563, PETRI_TRANSITIONS=882} [2024-06-28 04:15:18,646 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 522 predicate places. [2024-06-28 04:15:18,646 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 882 transitions, 14786 flow [2024-06-28 04:15:18,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:18,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:18,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:18,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 04:15:18,647 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:18,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:18,647 INFO L85 PathProgramCache]: Analyzing trace with hash -2064903164, now seen corresponding path program 1 times [2024-06-28 04:15:18,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:18,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812903574] [2024-06-28 04:15:18,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:18,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:19,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:19,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:19,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812903574] [2024-06-28 04:15:19,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812903574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:19,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:19,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:15:19,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174912607] [2024-06-28 04:15:19,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:19,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:15:19,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:19,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:15:19,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:15:19,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:15:19,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 882 transitions, 14786 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:19,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:19,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:15:19,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:22,357 INFO L124 PetriNetUnfolderBase]: 4836/7447 cut-off events. [2024-06-28 04:15:22,358 INFO L125 PetriNetUnfolderBase]: For 952186/952186 co-relation queries the response was YES. [2024-06-28 04:15:22,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71194 conditions, 7447 events. 4836/7447 cut-off events. For 952186/952186 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 45054 event pairs, 836 based on Foata normal form. 2/7448 useless extension candidates. Maximal degree in co-relation 70951. Up to 6981 conditions per place. [2024-06-28 04:15:22,492 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 789 selfloop transitions, 103 changer transitions 0/896 dead transitions. [2024-06-28 04:15:22,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 896 transitions, 16742 flow [2024-06-28 04:15:22,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:15:22,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:15:22,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 04:15:22,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392857142857143 [2024-06-28 04:15:22,494 INFO L175 Difference]: Start difference. First operand has 563 places, 882 transitions, 14786 flow. Second operand 7 states and 123 transitions. [2024-06-28 04:15:22,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 896 transitions, 16742 flow [2024-06-28 04:15:30,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 896 transitions, 16535 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-28 04:15:30,260 INFO L231 Difference]: Finished difference. Result has 566 places, 885 transitions, 14949 flow [2024-06-28 04:15:30,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14579, PETRI_DIFFERENCE_MINUEND_PLACES=559, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=882, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=779, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14949, PETRI_PLACES=566, PETRI_TRANSITIONS=885} [2024-06-28 04:15:30,261 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 525 predicate places. [2024-06-28 04:15:30,261 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 885 transitions, 14949 flow [2024-06-28 04:15:30,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:30,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:30,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:30,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 04:15:30,262 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:30,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:30,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1498299296, now seen corresponding path program 9 times [2024-06-28 04:15:30,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:30,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111958675] [2024-06-28 04:15:30,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:30,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:30,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:31,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:31,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:31,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111958675] [2024-06-28 04:15:31,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111958675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:31,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:31,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:15:31,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882388313] [2024-06-28 04:15:31,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:31,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:15:31,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:31,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:15:31,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:15:31,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:15:31,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 885 transitions, 14949 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:31,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:31,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:15:31,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:33,777 INFO L124 PetriNetUnfolderBase]: 4950/7598 cut-off events. [2024-06-28 04:15:33,777 INFO L125 PetriNetUnfolderBase]: For 1019460/1019466 co-relation queries the response was YES. [2024-06-28 04:15:33,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73715 conditions, 7598 events. 4950/7598 cut-off events. For 1019460/1019466 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 45779 event pairs, 823 based on Foata normal form. 10/7607 useless extension candidates. Maximal degree in co-relation 73471. Up to 6623 conditions per place. [2024-06-28 04:15:33,932 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 718 selfloop transitions, 244 changer transitions 0/966 dead transitions. [2024-06-28 04:15:33,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 966 transitions, 18126 flow [2024-06-28 04:15:33,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 04:15:33,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 04:15:33,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 241 transitions. [2024-06-28 04:15:33,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4303571428571429 [2024-06-28 04:15:33,933 INFO L175 Difference]: Start difference. First operand has 566 places, 885 transitions, 14949 flow. Second operand 14 states and 241 transitions. [2024-06-28 04:15:33,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 966 transitions, 18126 flow [2024-06-28 04:15:40,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 966 transitions, 17829 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-28 04:15:41,004 INFO L231 Difference]: Finished difference. Result has 575 places, 919 transitions, 15950 flow [2024-06-28 04:15:41,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=14656, PETRI_DIFFERENCE_MINUEND_PLACES=559, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=885, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=645, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=15950, PETRI_PLACES=575, PETRI_TRANSITIONS=919} [2024-06-28 04:15:41,005 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 534 predicate places. [2024-06-28 04:15:41,005 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 919 transitions, 15950 flow [2024-06-28 04:15:41,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:41,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:41,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:41,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 04:15:41,005 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:41,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:41,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1380206966, now seen corresponding path program 10 times [2024-06-28 04:15:41,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:41,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794125789] [2024-06-28 04:15:41,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:41,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:41,928 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 04:15:41,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:41,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794125789] [2024-06-28 04:15:41,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794125789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:41,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:41,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:15:41,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716447399] [2024-06-28 04:15:41,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:41,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:15:41,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:41,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:15:41,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:15:42,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:15:42,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 919 transitions, 15950 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:42,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:42,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:15:42,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:45,063 INFO L124 PetriNetUnfolderBase]: 4960/7626 cut-off events. [2024-06-28 04:15:45,063 INFO L125 PetriNetUnfolderBase]: For 1004658/1004664 co-relation queries the response was YES. [2024-06-28 04:15:45,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75280 conditions, 7626 events. 4960/7626 cut-off events. For 1004658/1004664 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 46195 event pairs, 831 based on Foata normal form. 8/7633 useless extension candidates. Maximal degree in co-relation 75035. Up to 7254 conditions per place. [2024-06-28 04:15:45,197 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 888 selfloop transitions, 72 changer transitions 0/964 dead transitions. [2024-06-28 04:15:45,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 964 transitions, 18298 flow [2024-06-28 04:15:45,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:15:45,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:15:45,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 193 transitions. [2024-06-28 04:15:45,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40208333333333335 [2024-06-28 04:15:45,199 INFO L175 Difference]: Start difference. First operand has 575 places, 919 transitions, 15950 flow. Second operand 12 states and 193 transitions. [2024-06-28 04:15:45,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 964 transitions, 18298 flow [2024-06-28 04:15:53,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 964 transitions, 17752 flow, removed 133 selfloop flow, removed 9 redundant places. [2024-06-28 04:15:53,117 INFO L231 Difference]: Finished difference. Result has 582 places, 938 transitions, 15925 flow [2024-06-28 04:15:53,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=15451, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=919, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=851, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15925, PETRI_PLACES=582, PETRI_TRANSITIONS=938} [2024-06-28 04:15:53,118 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 541 predicate places. [2024-06-28 04:15:53,118 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 938 transitions, 15925 flow [2024-06-28 04:15:53,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:53,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:53,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:53,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-28 04:15:53,119 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:53,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:53,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1824746434, now seen corresponding path program 11 times [2024-06-28 04:15:53,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:53,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025310416] [2024-06-28 04:15:53,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:53,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:54,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:54,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:54,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025310416] [2024-06-28 04:15:54,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025310416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:54,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:54,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:15:54,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512945195] [2024-06-28 04:15:54,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:54,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:15:54,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:54,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:15:54,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:15:54,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:15:54,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 938 transitions, 15925 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:54,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:54,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:15:54,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:57,739 INFO L124 PetriNetUnfolderBase]: 5072/7768 cut-off events. [2024-06-28 04:15:57,739 INFO L125 PetriNetUnfolderBase]: For 1066768/1066774 co-relation queries the response was YES. [2024-06-28 04:15:57,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77175 conditions, 7768 events. 5072/7768 cut-off events. For 1066768/1066774 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 46867 event pairs, 837 based on Foata normal form. 10/7777 useless extension candidates. Maximal degree in co-relation 76924. Up to 6863 conditions per place. [2024-06-28 04:15:57,896 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 707 selfloop transitions, 302 changer transitions 0/1013 dead transitions. [2024-06-28 04:15:57,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 1013 transitions, 18976 flow [2024-06-28 04:15:57,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 04:15:57,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 04:15:57,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 228 transitions. [2024-06-28 04:15:57,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43846153846153846 [2024-06-28 04:15:57,897 INFO L175 Difference]: Start difference. First operand has 582 places, 938 transitions, 15925 flow. Second operand 13 states and 228 transitions. [2024-06-28 04:15:57,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 1013 transitions, 18976 flow [2024-06-28 04:16:07,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 590 places, 1013 transitions, 18798 flow, removed 64 selfloop flow, removed 4 redundant places. [2024-06-28 04:16:07,547 INFO L231 Difference]: Finished difference. Result has 593 places, 970 transitions, 17020 flow [2024-06-28 04:16:07,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=15747, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=938, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=274, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=17020, PETRI_PLACES=593, PETRI_TRANSITIONS=970} [2024-06-28 04:16:07,548 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 552 predicate places. [2024-06-28 04:16:07,548 INFO L495 AbstractCegarLoop]: Abstraction has has 593 places, 970 transitions, 17020 flow [2024-06-28 04:16:07,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:07,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:07,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:07,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-28 04:16:07,548 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:07,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:07,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1380027042, now seen corresponding path program 5 times [2024-06-28 04:16:07,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:07,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317353815] [2024-06-28 04:16:07,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:07,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:08,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:08,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:08,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317353815] [2024-06-28 04:16:08,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317353815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:08,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:08,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:16:08,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50352369] [2024-06-28 04:16:08,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:08,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:16:08,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:08,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:16:08,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:16:08,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:16:08,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 970 transitions, 17020 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:08,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:08,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:16:08,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:12,172 INFO L124 PetriNetUnfolderBase]: 5116/7855 cut-off events. [2024-06-28 04:16:12,172 INFO L125 PetriNetUnfolderBase]: For 1160543/1160543 co-relation queries the response was YES. [2024-06-28 04:16:12,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79453 conditions, 7855 events. 5116/7855 cut-off events. For 1160543/1160543 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 47624 event pairs, 860 based on Foata normal form. 12/7866 useless extension candidates. Maximal degree in co-relation 79199. Up to 7253 conditions per place. [2024-06-28 04:16:12,324 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 859 selfloop transitions, 134 changer transitions 0/997 dead transitions. [2024-06-28 04:16:12,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 997 transitions, 19252 flow [2024-06-28 04:16:12,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:16:12,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:16:12,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 04:16:12,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4325 [2024-06-28 04:16:12,325 INFO L175 Difference]: Start difference. First operand has 593 places, 970 transitions, 17020 flow. Second operand 10 states and 173 transitions. [2024-06-28 04:16:12,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 997 transitions, 19252 flow [2024-06-28 04:16:21,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 997 transitions, 18675 flow, removed 180 selfloop flow, removed 6 redundant places. [2024-06-28 04:16:21,905 INFO L231 Difference]: Finished difference. Result has 597 places, 971 transitions, 16755 flow [2024-06-28 04:16:21,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=16443, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=970, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=836, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16755, PETRI_PLACES=597, PETRI_TRANSITIONS=971} [2024-06-28 04:16:21,906 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 556 predicate places. [2024-06-28 04:16:21,906 INFO L495 AbstractCegarLoop]: Abstraction has has 597 places, 971 transitions, 16755 flow [2024-06-28 04:16:21,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:21,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:21,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:21,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-28 04:16:21,907 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:21,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:21,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1380033986, now seen corresponding path program 12 times [2024-06-28 04:16:21,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:21,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848244286] [2024-06-28 04:16:21,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:21,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:22,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:22,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:22,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848244286] [2024-06-28 04:16:22,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848244286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:22,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:22,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:16:22,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345452307] [2024-06-28 04:16:22,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:22,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:16:22,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:22,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:16:22,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:16:23,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:16:23,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 971 transitions, 16755 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:23,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:23,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:16:23,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:26,174 INFO L124 PetriNetUnfolderBase]: 5126/7876 cut-off events. [2024-06-28 04:16:26,174 INFO L125 PetriNetUnfolderBase]: For 1089645/1089651 co-relation queries the response was YES. [2024-06-28 04:16:26,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79190 conditions, 7876 events. 5126/7876 cut-off events. For 1089645/1089651 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 47886 event pairs, 849 based on Foata normal form. 8/7883 useless extension candidates. Maximal degree in co-relation 78934. Up to 7492 conditions per place. [2024-06-28 04:16:26,348 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 925 selfloop transitions, 72 changer transitions 0/1001 dead transitions. [2024-06-28 04:16:26,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 1001 transitions, 18930 flow [2024-06-28 04:16:26,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 04:16:26,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 04:16:26,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 205 transitions. [2024-06-28 04:16:26,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942307692307692 [2024-06-28 04:16:26,349 INFO L175 Difference]: Start difference. First operand has 597 places, 971 transitions, 16755 flow. Second operand 13 states and 205 transitions. [2024-06-28 04:16:26,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 1001 transitions, 18930 flow [2024-06-28 04:16:34,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 1001 transitions, 18598 flow, removed 14 selfloop flow, removed 13 redundant places. [2024-06-28 04:16:34,598 INFO L231 Difference]: Finished difference. Result has 597 places, 974 transitions, 16648 flow [2024-06-28 04:16:34,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=16423, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=971, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=899, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=16648, PETRI_PLACES=597, PETRI_TRANSITIONS=974} [2024-06-28 04:16:34,599 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 556 predicate places. [2024-06-28 04:16:34,599 INFO L495 AbstractCegarLoop]: Abstraction has has 597 places, 974 transitions, 16648 flow [2024-06-28 04:16:34,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:34,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:34,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:34,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-28 04:16:34,599 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:34,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:34,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1352272810, now seen corresponding path program 13 times [2024-06-28 04:16:34,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:34,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968434111] [2024-06-28 04:16:34,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:34,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:35,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:35,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:35,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968434111] [2024-06-28 04:16:35,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968434111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:35,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:35,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:16:35,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355213450] [2024-06-28 04:16:35,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:35,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:16:35,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:35,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:16:35,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:16:35,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:16:35,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 974 transitions, 16648 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:35,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:35,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:16:35,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:38,323 INFO L124 PetriNetUnfolderBase]: 5182/7924 cut-off events. [2024-06-28 04:16:38,323 INFO L125 PetriNetUnfolderBase]: For 1045580/1045586 co-relation queries the response was YES. [2024-06-28 04:16:38,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79152 conditions, 7924 events. 5182/7924 cut-off events. For 1045580/1045586 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 47886 event pairs, 686 based on Foata normal form. 8/7931 useless extension candidates. Maximal degree in co-relation 78900. Up to 6648 conditions per place. [2024-06-28 04:16:38,468 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 749 selfloop transitions, 344 changer transitions 0/1097 dead transitions. [2024-06-28 04:16:38,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 606 places, 1097 transitions, 20806 flow [2024-06-28 04:16:38,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:16:38,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:16:38,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-28 04:16:38,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455 [2024-06-28 04:16:38,469 INFO L175 Difference]: Start difference. First operand has 597 places, 974 transitions, 16648 flow. Second operand 10 states and 182 transitions. [2024-06-28 04:16:38,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 606 places, 1097 transitions, 20806 flow [2024-06-28 04:16:47,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 1097 transitions, 20614 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-28 04:16:47,916 INFO L231 Difference]: Finished difference. Result has 601 places, 1067 transitions, 18816 flow [2024-06-28 04:16:47,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=16456, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=974, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=651, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18816, PETRI_PLACES=601, PETRI_TRANSITIONS=1067} [2024-06-28 04:16:47,917 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 560 predicate places. [2024-06-28 04:16:47,917 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 1067 transitions, 18816 flow [2024-06-28 04:16:47,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:47,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:47,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:47,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-28 04:16:47,918 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:47,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:47,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1380211616, now seen corresponding path program 14 times [2024-06-28 04:16:47,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:47,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781986890] [2024-06-28 04:16:47,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:47,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:49,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:49,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:49,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781986890] [2024-06-28 04:16:49,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781986890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:49,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:49,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:16:49,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439255130] [2024-06-28 04:16:49,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:49,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:16:49,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:49,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:16:49,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:16:49,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:16:49,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 1067 transitions, 18816 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:49,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:49,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:16:49,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:52,416 INFO L124 PetriNetUnfolderBase]: 5228/7996 cut-off events. [2024-06-28 04:16:52,416 INFO L125 PetriNetUnfolderBase]: For 1105938/1105944 co-relation queries the response was YES. [2024-06-28 04:16:52,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82962 conditions, 7996 events. 5228/7996 cut-off events. For 1105938/1105944 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 48437 event pairs, 811 based on Foata normal form. 10/8005 useless extension candidates. Maximal degree in co-relation 82705. Up to 7477 conditions per place. [2024-06-28 04:16:52,571 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 982 selfloop transitions, 125 changer transitions 0/1111 dead transitions. [2024-06-28 04:16:52,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 1111 transitions, 21772 flow [2024-06-28 04:16:52,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 04:16:52,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 04:16:52,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 218 transitions. [2024-06-28 04:16:52,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41923076923076924 [2024-06-28 04:16:52,572 INFO L175 Difference]: Start difference. First operand has 601 places, 1067 transitions, 18816 flow. Second operand 13 states and 218 transitions. [2024-06-28 04:16:52,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 1111 transitions, 21772 flow [2024-06-28 04:17:02,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 1111 transitions, 21596 flow, removed 78 selfloop flow, removed 2 redundant places. [2024-06-28 04:17:02,476 INFO L231 Difference]: Finished difference. Result has 613 places, 1082 transitions, 19314 flow [2024-06-28 04:17:02,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=18640, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1067, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=945, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=19314, PETRI_PLACES=613, PETRI_TRANSITIONS=1082} [2024-06-28 04:17:02,477 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 572 predicate places. [2024-06-28 04:17:02,477 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 1082 transitions, 19314 flow [2024-06-28 04:17:02,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:02,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:02,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:02,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-28 04:17:02,478 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:17:02,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:02,478 INFO L85 PathProgramCache]: Analyzing trace with hash 836282948, now seen corresponding path program 15 times [2024-06-28 04:17:02,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:02,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30070975] [2024-06-28 04:17:02,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:02,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:03,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:03,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:03,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30070975] [2024-06-28 04:17:03,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30070975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:03,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:03,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:17:03,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436601832] [2024-06-28 04:17:03,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:03,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:17:03,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:03,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:17:03,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:17:03,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:17:03,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 1082 transitions, 19314 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:03,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:03,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:17:03,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:06,819 INFO L124 PetriNetUnfolderBase]: 5242/8020 cut-off events. [2024-06-28 04:17:06,820 INFO L125 PetriNetUnfolderBase]: For 1115794/1115800 co-relation queries the response was YES. [2024-06-28 04:17:07,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82879 conditions, 8020 events. 5242/8020 cut-off events. For 1115794/1115800 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 48616 event pairs, 845 based on Foata normal form. 12/8031 useless extension candidates. Maximal degree in co-relation 82618. Up to 7193 conditions per place. [2024-06-28 04:17:07,134 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 800 selfloop transitions, 312 changer transitions 0/1116 dead transitions. [2024-06-28 04:17:07,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 1116 transitions, 21806 flow [2024-06-28 04:17:07,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:17:07,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:17:07,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 205 transitions. [2024-06-28 04:17:07,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-28 04:17:07,135 INFO L175 Difference]: Start difference. First operand has 613 places, 1082 transitions, 19314 flow. Second operand 12 states and 205 transitions. [2024-06-28 04:17:07,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 1116 transitions, 21806 flow [2024-06-28 04:17:17,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 1116 transitions, 21521 flow, removed 77 selfloop flow, removed 9 redundant places. [2024-06-28 04:17:17,134 INFO L231 Difference]: Finished difference. Result has 616 places, 1089 transitions, 19856 flow [2024-06-28 04:17:17,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=19029, PETRI_DIFFERENCE_MINUEND_PLACES=604, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1082, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=305, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=770, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=19856, PETRI_PLACES=616, PETRI_TRANSITIONS=1089} [2024-06-28 04:17:17,135 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 575 predicate places. [2024-06-28 04:17:17,135 INFO L495 AbstractCegarLoop]: Abstraction has has 616 places, 1089 transitions, 19856 flow [2024-06-28 04:17:17,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:17,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:17,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:17,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-28 04:17:17,135 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:17:17,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:17,136 INFO L85 PathProgramCache]: Analyzing trace with hash 879548486, now seen corresponding path program 16 times [2024-06-28 04:17:17,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:17,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972819175] [2024-06-28 04:17:17,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:17,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:18,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:18,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:18,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972819175] [2024-06-28 04:17:18,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972819175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:18,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:18,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:17:18,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899712922] [2024-06-28 04:17:18,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:18,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:17:18,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:18,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:17:18,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:17:18,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:17:18,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 616 places, 1089 transitions, 19856 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:18,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:18,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:17:18,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:21,374 INFO L124 PetriNetUnfolderBase]: 5358/8184 cut-off events. [2024-06-28 04:17:21,375 INFO L125 PetriNetUnfolderBase]: For 1137493/1137499 co-relation queries the response was YES. [2024-06-28 04:17:21,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85404 conditions, 8184 events. 5358/8184 cut-off events. For 1137493/1137499 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 49632 event pairs, 699 based on Foata normal form. 10/8193 useless extension candidates. Maximal degree in co-relation 85141. Up to 6657 conditions per place. [2024-06-28 04:17:21,538 INFO L140 encePairwiseOnDemand]: 26/40 looper letters, 725 selfloop transitions, 426 changer transitions 0/1155 dead transitions. [2024-06-28 04:17:21,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 1155 transitions, 23358 flow [2024-06-28 04:17:21,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:17:21,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:17:21,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-06-28 04:17:21,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-28 04:17:21,539 INFO L175 Difference]: Start difference. First operand has 616 places, 1089 transitions, 19856 flow. Second operand 11 states and 195 transitions. [2024-06-28 04:17:21,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 1155 transitions, 23358 flow [2024-06-28 04:17:31,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 1155 transitions, 22577 flow, removed 91 selfloop flow, removed 9 redundant places. [2024-06-28 04:17:31,161 INFO L231 Difference]: Finished difference. Result has 619 places, 1122 transitions, 20724 flow [2024-06-28 04:17:31,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=19167, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1089, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=396, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=20724, PETRI_PLACES=619, PETRI_TRANSITIONS=1122} [2024-06-28 04:17:31,162 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 578 predicate places. [2024-06-28 04:17:31,162 INFO L495 AbstractCegarLoop]: Abstraction has has 619 places, 1122 transitions, 20724 flow [2024-06-28 04:17:31,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:31,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:31,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:31,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-28 04:17:31,162 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:17:31,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:31,163 INFO L85 PathProgramCache]: Analyzing trace with hash 875079836, now seen corresponding path program 17 times [2024-06-28 04:17:31,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:31,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147703493] [2024-06-28 04:17:31,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:31,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:32,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:32,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:32,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147703493] [2024-06-28 04:17:32,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147703493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:32,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:32,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:17:32,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268886232] [2024-06-28 04:17:32,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:32,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:17:32,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:32,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:17:32,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:17:32,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-28 04:17:32,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 619 places, 1122 transitions, 20724 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:32,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:32,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-28 04:17:32,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15