./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_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/safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/protection/safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_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 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 19:05:13,758 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 19:05:13,820 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 19:05:13,824 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 19:05:13,825 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 19:05:13,848 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 19:05:13,849 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 19:05:13,850 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 19:05:13,850 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 19:05:13,853 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 19:05:13,854 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 19:05:13,854 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 19:05:13,855 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 19:05:13,856 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 19:05:13,856 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 19:05:13,856 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 19:05:13,856 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 19:05:13,857 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 19:05:13,857 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 19:05:13,857 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 19:05:13,857 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 19:05:13,858 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 19:05:13,858 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 19:05:13,858 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 19:05:13,858 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 19:05:13,858 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 19:05:13,859 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 19:05:13,859 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 19:05:13,859 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 19:05:13,860 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 19:05:13,860 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 19:05:13,861 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 19:05:13,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:05:13,861 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 19:05:13,861 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 19:05:13,861 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 19:05:13,862 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 19:05:13,862 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 19:05:13,862 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 19:05:13,862 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 19:05:13,862 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 19:05:13,863 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 19:05:13,863 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 19:05:13,863 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 19:05:14,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 19:05:14,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 19:05:14,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 19:05:14,078 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 19:05:14,079 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 19:05:14,080 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 19:05:15,121 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 19:05:15,339 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 19:05:15,339 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 19:05:15,351 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48dffaa58/51fbfdaa20164931997ccfc03d81750a/FLAG8be467a67 [2024-06-27 19:05:15,361 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48dffaa58/51fbfdaa20164931997ccfc03d81750a [2024-06-27 19:05:15,363 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 19:05:15,364 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 19:05:15,364 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-27 19:05:15,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 19:05:15,537 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 19:05:15,538 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 19:05:15,538 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 19:05:15,542 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 19:05:15,542 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:05:15" (1/2) ... [2024-06-27 19:05:15,543 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9bdda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:15, skipping insertion in model container [2024-06-27 19:05:15,543 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:05:15" (1/2) ... [2024-06-27 19:05:15,544 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6a6ee155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:15, skipping insertion in model container [2024-06-27 19:05:15,545 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:05:15" (2/2) ... [2024-06-27 19:05:15,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9bdda and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:05:15, skipping insertion in model container [2024-06-27 19:05:15,545 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:05:15" (2/2) ... [2024-06-27 19:05:15,545 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 19:05:15,621 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 19:05:15,622 INFO L97 edCorrectnessWitness]: Location invariant before [L836-L836] ((((((((((((((((((! multithreaded || (y == 0 || y == 1)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1)) [2024-06-27 19:05:15,623 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] ((((((((((((((((((! multithreaded || (y == 0 || y == 1)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1)) [2024-06-27 19:05:15,623 INFO L97 edCorrectnessWitness]: Location invariant before [L838-L838] ((((((((((((((((((! multithreaded || (y == 0 || y == 1)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1)) [2024-06-27 19:05:15,623 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 19:05:15,623 INFO L106 edCorrectnessWitness]: ghost_update [L834-L834] multithreaded = 1; [2024-06-27 19:05:15,673 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 19:05:15,830 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1039,1052] [2024-06-27 19:05:15,962 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:05:15,972 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 19:05:16,000 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1039,1052] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 19:05:16,069 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:05:16,100 INFO L206 MainTranslator]: Completed translation [2024-06-27 19:05:16,101 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:05:16 WrapperNode [2024-06-27 19:05:16,101 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 19:05:16,102 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 19:05:16,102 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 19:05:16,102 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 19:05:16,108 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:05:16" (1/1) ... [2024-06-27 19:05:16,121 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:05:16" (1/1) ... [2024-06-27 19:05:16,151 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 122 [2024-06-27 19:05:16,151 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 19:05:16,152 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 19:05:16,152 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 19:05:16,152 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 19:05:16,160 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:05:16" (1/1) ... [2024-06-27 19:05:16,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:05:16" (1/1) ... [2024-06-27 19:05:16,163 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:05:16" (1/1) ... [2024-06-27 19:05:16,176 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 19:05:16,177 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:05:16" (1/1) ... [2024-06-27 19:05:16,177 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:05:16" (1/1) ... [2024-06-27 19:05:16,183 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:05:16" (1/1) ... [2024-06-27 19:05:16,186 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:05:16" (1/1) ... [2024-06-27 19:05:16,195 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:05:16" (1/1) ... [2024-06-27 19:05:16,199 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:05:16" (1/1) ... [2024-06-27 19:05:16,203 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 19:05:16,204 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 19:05:16,204 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 19:05:16,204 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 19:05:16,204 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:05:16" (1/1) ... [2024-06-27 19:05:16,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:05:16,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 19:05:16,235 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 19:05:16,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 19:05:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 19:05:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 19:05:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 19:05:16,266 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 19:05:16,267 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 19:05:16,267 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 19:05:16,267 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 19:05:16,267 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 19:05:16,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 19:05:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 19:05:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 19:05:16,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 19:05:16,270 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 19:05:16,391 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 19:05:16,393 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 19:05:16,692 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 19:05:16,692 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 19:05:16,843 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 19:05:16,843 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 19:05:16,844 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:05:16 BoogieIcfgContainer [2024-06-27 19:05:16,844 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 19:05:16,847 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 19:05:16,847 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 19:05:16,850 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 19:05:16,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 07:05:15" (1/4) ... [2024-06-27 19:05:16,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2d35c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:05:16, skipping insertion in model container [2024-06-27 19:05:16,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:05:15" (2/4) ... [2024-06-27 19:05:16,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2d35c9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:05:16, skipping insertion in model container [2024-06-27 19:05:16,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:05:16" (3/4) ... [2024-06-27 19:05:16,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2d35c9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:05:16, skipping insertion in model container [2024-06-27 19:05:16,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:05:16" (4/4) ... [2024-06-27 19:05:16,853 INFO L112 eAbstractionObserver]: Analyzing ICFG safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 19:05:16,868 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 19:05:16,868 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 19:05:16,868 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 19:05:16,935 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 19:05:16,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 19:05:16,998 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-27 19:05:16,998 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:05:17,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-27 19:05:17,001 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 19:05:17,005 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-06-27 19:05:17,018 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 19:05:17,031 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;@4ca61998, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 19:05:17,031 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 19:05:17,034 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 19:05:17,034 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 19:05:17,034 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:05:17,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:17,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 19:05:17,035 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:17,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:17,070 INFO L85 PathProgramCache]: Analyzing trace with hash 346260118, now seen corresponding path program 1 times [2024-06-27 19:05:17,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:17,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953658509] [2024-06-27 19:05:17,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:17,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:17,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:17,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:17,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953658509] [2024-06-27 19:05:17,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953658509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:17,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:17,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:05:17,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721491279] [2024-06-27 19:05:17,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:17,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:05:17,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:17,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:05:17,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:05:17,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-06-27 19:05:17,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:17,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:17,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-06-27 19:05:17,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:18,421 INFO L124 PetriNetUnfolderBase]: 2456/3908 cut-off events. [2024-06-27 19:05:18,422 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-06-27 19:05:18,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7588 conditions, 3908 events. 2456/3908 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 23806 event pairs, 1936 based on Foata normal form. 108/3705 useless extension candidates. Maximal degree in co-relation 7576. Up to 3570 conditions per place. [2024-06-27 19:05:18,449 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 40 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-06-27 19:05:18,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 223 flow [2024-06-27 19:05:18,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:05:18,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:05:18,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-06-27 19:05:18,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7163120567375887 [2024-06-27 19:05:18,462 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 101 transitions. [2024-06-27 19:05:18,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 223 flow [2024-06-27 19:05:18,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 59 transitions, 218 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 19:05:18,470 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 129 flow [2024-06-27 19:05:18,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-06-27 19:05:18,475 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-27 19:05:18,476 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 129 flow [2024-06-27 19:05:18,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:18,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:18,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:18,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 19:05:18,477 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:18,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:18,478 INFO L85 PathProgramCache]: Analyzing trace with hash 2044418327, now seen corresponding path program 1 times [2024-06-27 19:05:18,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:18,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183377320] [2024-06-27 19:05:18,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:18,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:18,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:18,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183377320] [2024-06-27 19:05:18,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183377320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:18,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:18,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 19:05:18,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345177560] [2024-06-27 19:05:18,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:18,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 19:05:18,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:18,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 19:05:18,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 19:05:18,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-06-27 19:05:18,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:18,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:18,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-06-27 19:05:18,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:19,408 INFO L124 PetriNetUnfolderBase]: 3052/4462 cut-off events. [2024-06-27 19:05:19,408 INFO L125 PetriNetUnfolderBase]: For 485/485 co-relation queries the response was YES. [2024-06-27 19:05:19,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10142 conditions, 4462 events. 3052/4462 cut-off events. For 485/485 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 24387 event pairs, 1198 based on Foata normal form. 6/4277 useless extension candidates. Maximal degree in co-relation 10130. Up to 4369 conditions per place. [2024-06-27 19:05:19,429 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 56 selfloop transitions, 9 changer transitions 0/78 dead transitions. [2024-06-27 19:05:19,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 78 transitions, 342 flow [2024-06-27 19:05:19,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:05:19,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:05:19,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-06-27 19:05:19,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6808510638297872 [2024-06-27 19:05:19,434 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 129 flow. Second operand 4 states and 128 transitions. [2024-06-27 19:05:19,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 78 transitions, 342 flow [2024-06-27 19:05:19,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 78 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 19:05:19,437 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 198 flow [2024-06-27 19:05:19,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2024-06-27 19:05:19,437 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 4 predicate places. [2024-06-27 19:05:19,438 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 198 flow [2024-06-27 19:05:19,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:19,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:19,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:19,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 19:05:19,441 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:19,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:19,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1075877993, now seen corresponding path program 1 times [2024-06-27 19:05:19,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:19,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657071167] [2024-06-27 19:05:19,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:19,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:19,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:19,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:19,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657071167] [2024-06-27 19:05:19,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657071167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:19,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:19,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:05:19,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629004229] [2024-06-27 19:05:19,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:19,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:05:19,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:19,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:05:19,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:05:19,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2024-06-27 19:05:19,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:19,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:19,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2024-06-27 19:05:19,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:19,719 INFO L124 PetriNetUnfolderBase]: 1058/2090 cut-off events. [2024-06-27 19:05:19,719 INFO L125 PetriNetUnfolderBase]: For 551/571 co-relation queries the response was YES. [2024-06-27 19:05:19,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4266 conditions, 2090 events. 1058/2090 cut-off events. For 551/571 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 14292 event pairs, 449 based on Foata normal form. 13/1965 useless extension candidates. Maximal degree in co-relation 4251. Up to 1328 conditions per place. [2024-06-27 19:05:19,730 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 30 selfloop transitions, 5 changer transitions 0/63 dead transitions. [2024-06-27 19:05:19,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 63 transitions, 268 flow [2024-06-27 19:05:19,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:05:19,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:05:19,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-06-27 19:05:19,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7659574468085106 [2024-06-27 19:05:19,734 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 198 flow. Second operand 3 states and 108 transitions. [2024-06-27 19:05:19,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 63 transitions, 268 flow [2024-06-27 19:05:19,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 63 transitions, 266 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-27 19:05:19,737 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 180 flow [2024-06-27 19:05:19,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-06-27 19:05:19,738 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 5 predicate places. [2024-06-27 19:05:19,738 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 180 flow [2024-06-27 19:05:19,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:19,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:19,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:19,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 19:05:19,739 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:19,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:19,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1168079349, now seen corresponding path program 1 times [2024-06-27 19:05:19,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:19,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105084801] [2024-06-27 19:05:19,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:19,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:20,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:20,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:20,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105084801] [2024-06-27 19:05:20,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105084801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:20,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:20,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:05:20,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792388605] [2024-06-27 19:05:20,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:20,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:05:20,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:20,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:05:20,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:05:20,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-27 19:05:20,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 180 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:20,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:20,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-27 19:05:20,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:20,846 INFO L124 PetriNetUnfolderBase]: 2657/4181 cut-off events. [2024-06-27 19:05:20,846 INFO L125 PetriNetUnfolderBase]: For 1994/1999 co-relation queries the response was YES. [2024-06-27 19:05:20,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9880 conditions, 4181 events. 2657/4181 cut-off events. For 1994/1999 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 25275 event pairs, 1617 based on Foata normal form. 3/4000 useless extension candidates. Maximal degree in co-relation 9862. Up to 3821 conditions per place. [2024-06-27 19:05:20,865 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 53 selfloop transitions, 11 changer transitions 1/79 dead transitions. [2024-06-27 19:05:20,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 79 transitions, 399 flow [2024-06-27 19:05:20,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:05:20,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:05:20,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-06-27 19:05:20,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5659574468085107 [2024-06-27 19:05:20,867 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 180 flow. Second operand 5 states and 133 transitions. [2024-06-27 19:05:20,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 79 transitions, 399 flow [2024-06-27 19:05:20,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 79 transitions, 385 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 19:05:20,869 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 267 flow [2024-06-27 19:05:20,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=267, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2024-06-27 19:05:20,870 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 9 predicate places. [2024-06-27 19:05:20,870 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 267 flow [2024-06-27 19:05:20,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:20,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:20,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:20,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 19:05:20,871 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:20,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:20,872 INFO L85 PathProgramCache]: Analyzing trace with hash -36937003, now seen corresponding path program 1 times [2024-06-27 19:05:20,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:20,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27680469] [2024-06-27 19:05:20,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:20,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:21,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:21,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:21,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27680469] [2024-06-27 19:05:21,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27680469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:21,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:21,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:05:21,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661316339] [2024-06-27 19:05:21,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:21,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:05:21,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:21,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:05:21,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:05:21,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-06-27 19:05:21,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 267 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:21,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:21,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-06-27 19:05:21,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:22,331 INFO L124 PetriNetUnfolderBase]: 2610/4284 cut-off events. [2024-06-27 19:05:22,331 INFO L125 PetriNetUnfolderBase]: For 2988/2996 co-relation queries the response was YES. [2024-06-27 19:05:22,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11109 conditions, 4284 events. 2610/4284 cut-off events. For 2988/2996 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 26118 event pairs, 989 based on Foata normal form. 12/4149 useless extension candidates. Maximal degree in co-relation 11089. Up to 3689 conditions per place. [2024-06-27 19:05:22,353 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 74 selfloop transitions, 14 changer transitions 5/106 dead transitions. [2024-06-27 19:05:22,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 106 transitions, 576 flow [2024-06-27 19:05:22,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:05:22,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:05:22,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-06-27 19:05:22,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-06-27 19:05:22,354 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 267 flow. Second operand 6 states and 180 transitions. [2024-06-27 19:05:22,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 106 transitions, 576 flow [2024-06-27 19:05:22,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 106 transitions, 561 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 19:05:22,358 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 313 flow [2024-06-27 19:05:22,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=313, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-06-27 19:05:22,359 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2024-06-27 19:05:22,359 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 313 flow [2024-06-27 19:05:22,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:22,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:22,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:22,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 19:05:22,360 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:22,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:22,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1859659461, now seen corresponding path program 1 times [2024-06-27 19:05:22,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:22,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984614937] [2024-06-27 19:05:22,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:22,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:22,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:22,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:22,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984614937] [2024-06-27 19:05:22,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984614937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:22,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:22,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:05:22,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533101027] [2024-06-27 19:05:22,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:22,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:05:22,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:22,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:05:22,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:05:22,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 19:05:22,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 313 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:22,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:22,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 19:05:22,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:23,517 INFO L124 PetriNetUnfolderBase]: 2824/4563 cut-off events. [2024-06-27 19:05:23,517 INFO L125 PetriNetUnfolderBase]: For 5080/5088 co-relation queries the response was YES. [2024-06-27 19:05:23,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12623 conditions, 4563 events. 2824/4563 cut-off events. For 5080/5088 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 28042 event pairs, 1271 based on Foata normal form. 2/4436 useless extension candidates. Maximal degree in co-relation 12600. Up to 4019 conditions per place. [2024-06-27 19:05:23,544 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 71 selfloop transitions, 12 changer transitions 0/98 dead transitions. [2024-06-27 19:05:23,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 98 transitions, 593 flow [2024-06-27 19:05:23,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:05:23,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:05:23,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-27 19:05:23,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 19:05:23,546 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 313 flow. Second operand 6 states and 150 transitions. [2024-06-27 19:05:23,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 98 transitions, 593 flow [2024-06-27 19:05:23,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 98 transitions, 560 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 19:05:23,551 INFO L231 Difference]: Finished difference. Result has 70 places, 73 transitions, 389 flow [2024-06-27 19:05:23,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=389, PETRI_PLACES=70, PETRI_TRANSITIONS=73} [2024-06-27 19:05:23,552 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 17 predicate places. [2024-06-27 19:05:23,552 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 73 transitions, 389 flow [2024-06-27 19:05:23,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:23,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:23,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:23,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 19:05:23,553 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:23,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:23,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1531106964, now seen corresponding path program 1 times [2024-06-27 19:05:23,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:23,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700425816] [2024-06-27 19:05:23,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:23,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:23,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:24,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:24,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:24,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700425816] [2024-06-27 19:05:24,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700425816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:24,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:24,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:05:24,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252332918] [2024-06-27 19:05:24,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:24,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:05:24,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:24,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:05:24,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:05:24,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 19:05:24,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 73 transitions, 389 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:24,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:24,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 19:05:24,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:24,698 INFO L124 PetriNetUnfolderBase]: 3014/5101 cut-off events. [2024-06-27 19:05:24,699 INFO L125 PetriNetUnfolderBase]: For 6726/6757 co-relation queries the response was YES. [2024-06-27 19:05:24,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14532 conditions, 5101 events. 3014/5101 cut-off events. For 6726/6757 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 32928 event pairs, 1263 based on Foata normal form. 27/4942 useless extension candidates. Maximal degree in co-relation 14505. Up to 4291 conditions per place. [2024-06-27 19:05:24,724 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 79 selfloop transitions, 16 changer transitions 0/109 dead transitions. [2024-06-27 19:05:24,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 109 transitions, 693 flow [2024-06-27 19:05:24,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:05:24,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:05:24,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-27 19:05:24,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-06-27 19:05:24,726 INFO L175 Difference]: Start difference. First operand has 70 places, 73 transitions, 389 flow. Second operand 6 states and 153 transitions. [2024-06-27 19:05:24,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 109 transitions, 693 flow [2024-06-27 19:05:24,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 109 transitions, 687 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-27 19:05:24,732 INFO L231 Difference]: Finished difference. Result has 77 places, 82 transitions, 501 flow [2024-06-27 19:05:24,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=501, PETRI_PLACES=77, PETRI_TRANSITIONS=82} [2024-06-27 19:05:24,734 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 24 predicate places. [2024-06-27 19:05:24,734 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 82 transitions, 501 flow [2024-06-27 19:05:24,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:24,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:24,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:24,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 19:05:24,735 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:24,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:24,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1814859264, now seen corresponding path program 2 times [2024-06-27 19:05:24,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:24,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633661690] [2024-06-27 19:05:24,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:24,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:25,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:25,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:25,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633661690] [2024-06-27 19:05:25,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633661690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:25,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:25,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:05:25,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113782845] [2024-06-27 19:05:25,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:25,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:05:25,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:25,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:05:25,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:05:25,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 19:05:25,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 82 transitions, 501 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:25,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:25,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 19:05:25,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:25,856 INFO L124 PetriNetUnfolderBase]: 3119/5243 cut-off events. [2024-06-27 19:05:25,856 INFO L125 PetriNetUnfolderBase]: For 9825/9854 co-relation queries the response was YES. [2024-06-27 19:05:25,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16397 conditions, 5243 events. 3119/5243 cut-off events. For 9825/9854 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 33772 event pairs, 1196 based on Foata normal form. 16/5057 useless extension candidates. Maximal degree in co-relation 16365. Up to 4358 conditions per place. [2024-06-27 19:05:25,882 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 79 selfloop transitions, 22 changer transitions 0/115 dead transitions. [2024-06-27 19:05:25,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 115 transitions, 817 flow [2024-06-27 19:05:25,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:05:25,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:05:25,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-27 19:05:25,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2024-06-27 19:05:25,884 INFO L175 Difference]: Start difference. First operand has 77 places, 82 transitions, 501 flow. Second operand 6 states and 154 transitions. [2024-06-27 19:05:25,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 115 transitions, 817 flow [2024-06-27 19:05:25,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 115 transitions, 791 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-27 19:05:25,891 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 589 flow [2024-06-27 19:05:25,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=589, PETRI_PLACES=82, PETRI_TRANSITIONS=88} [2024-06-27 19:05:25,893 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 29 predicate places. [2024-06-27 19:05:25,894 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 589 flow [2024-06-27 19:05:25,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:25,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:25,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:25,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 19:05:25,894 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:25,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:25,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1814869184, now seen corresponding path program 1 times [2024-06-27 19:05:25,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:25,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050793503] [2024-06-27 19:05:25,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:25,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:26,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:26,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:26,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050793503] [2024-06-27 19:05:26,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050793503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:26,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:26,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:05:26,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731748107] [2024-06-27 19:05:26,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:26,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:05:26,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:26,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:05:26,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:05:26,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 19:05:26,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 88 transitions, 589 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:26,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:26,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 19:05:26,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:27,337 INFO L124 PetriNetUnfolderBase]: 3042/5023 cut-off events. [2024-06-27 19:05:27,338 INFO L125 PetriNetUnfolderBase]: For 12340/12360 co-relation queries the response was YES. [2024-06-27 19:05:27,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16497 conditions, 5023 events. 3042/5023 cut-off events. For 12340/12360 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 31625 event pairs, 1232 based on Foata normal form. 2/4831 useless extension candidates. Maximal degree in co-relation 16462. Up to 4253 conditions per place. [2024-06-27 19:05:27,366 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 91 selfloop transitions, 23 changer transitions 0/134 dead transitions. [2024-06-27 19:05:27,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 134 transitions, 981 flow [2024-06-27 19:05:27,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:05:27,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:05:27,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 19:05:27,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349544072948328 [2024-06-27 19:05:27,368 INFO L175 Difference]: Start difference. First operand has 82 places, 88 transitions, 589 flow. Second operand 7 states and 176 transitions. [2024-06-27 19:05:27,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 134 transitions, 981 flow [2024-06-27 19:05:27,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 134 transitions, 947 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-27 19:05:27,377 INFO L231 Difference]: Finished difference. Result has 90 places, 100 transitions, 721 flow [2024-06-27 19:05:27,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=721, PETRI_PLACES=90, PETRI_TRANSITIONS=100} [2024-06-27 19:05:27,379 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 37 predicate places. [2024-06-27 19:05:27,379 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 100 transitions, 721 flow [2024-06-27 19:05:27,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:27,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:27,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:27,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 19:05:27,381 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:27,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:27,382 INFO L85 PathProgramCache]: Analyzing trace with hash 491617976, now seen corresponding path program 1 times [2024-06-27 19:05:27,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:27,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007106746] [2024-06-27 19:05:27,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:27,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:27,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:27,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:27,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007106746] [2024-06-27 19:05:27,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007106746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:27,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:27,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:05:27,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376077386] [2024-06-27 19:05:27,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:27,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:05:27,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:27,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:05:27,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:05:28,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:05:28,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 100 transitions, 721 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 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) [2024-06-27 19:05:28,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:28,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:05:28,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:28,797 INFO L124 PetriNetUnfolderBase]: 3278/5484 cut-off events. [2024-06-27 19:05:28,797 INFO L125 PetriNetUnfolderBase]: For 15792/15792 co-relation queries the response was YES. [2024-06-27 19:05:28,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19101 conditions, 5484 events. 3278/5484 cut-off events. For 15792/15792 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 34938 event pairs, 1329 based on Foata normal form. 4/5311 useless extension candidates. Maximal degree in co-relation 19061. Up to 4623 conditions per place. [2024-06-27 19:05:28,832 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 120 selfloop transitions, 16 changer transitions 0/146 dead transitions. [2024-06-27 19:05:28,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 146 transitions, 1160 flow [2024-06-27 19:05:28,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:05:28,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:05:28,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 19:05:28,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258358662613982 [2024-06-27 19:05:28,834 INFO L175 Difference]: Start difference. First operand has 90 places, 100 transitions, 721 flow. Second operand 7 states and 173 transitions. [2024-06-27 19:05:28,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 146 transitions, 1160 flow [2024-06-27 19:05:28,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 146 transitions, 1130 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-06-27 19:05:28,850 INFO L231 Difference]: Finished difference. Result has 98 places, 110 transitions, 827 flow [2024-06-27 19:05:28,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=827, PETRI_PLACES=98, PETRI_TRANSITIONS=110} [2024-06-27 19:05:28,850 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 45 predicate places. [2024-06-27 19:05:28,850 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 110 transitions, 827 flow [2024-06-27 19:05:28,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 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) [2024-06-27 19:05:28,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:28,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:28,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 19:05:28,851 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:28,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:28,852 INFO L85 PathProgramCache]: Analyzing trace with hash 426359716, now seen corresponding path program 2 times [2024-06-27 19:05:28,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:28,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703912133] [2024-06-27 19:05:28,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:28,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:28,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:29,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:29,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:29,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703912133] [2024-06-27 19:05:29,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703912133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:29,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:29,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:05:29,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672919103] [2024-06-27 19:05:29,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:29,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:05:29,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:29,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:05:29,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:05:29,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:05:29,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 110 transitions, 827 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 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) [2024-06-27 19:05:29,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:29,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:05:29,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:30,219 INFO L124 PetriNetUnfolderBase]: 3357/5591 cut-off events. [2024-06-27 19:05:30,219 INFO L125 PetriNetUnfolderBase]: For 19462/19462 co-relation queries the response was YES. [2024-06-27 19:05:30,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20414 conditions, 5591 events. 3357/5591 cut-off events. For 19462/19462 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 35640 event pairs, 1270 based on Foata normal form. 4/5402 useless extension candidates. Maximal degree in co-relation 20369. Up to 4584 conditions per place. [2024-06-27 19:05:30,251 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 118 selfloop transitions, 29 changer transitions 0/157 dead transitions. [2024-06-27 19:05:30,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 157 transitions, 1325 flow [2024-06-27 19:05:30,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:05:30,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:05:30,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-27 19:05:30,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5379939209726444 [2024-06-27 19:05:30,253 INFO L175 Difference]: Start difference. First operand has 98 places, 110 transitions, 827 flow. Second operand 7 states and 177 transitions. [2024-06-27 19:05:30,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 157 transitions, 1325 flow [2024-06-27 19:05:30,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 157 transitions, 1302 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-27 19:05:30,271 INFO L231 Difference]: Finished difference. Result has 104 places, 119 transitions, 954 flow [2024-06-27 19:05:30,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=954, PETRI_PLACES=104, PETRI_TRANSITIONS=119} [2024-06-27 19:05:30,271 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 51 predicate places. [2024-06-27 19:05:30,272 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 119 transitions, 954 flow [2024-06-27 19:05:30,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 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) [2024-06-27 19:05:30,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:30,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:30,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 19:05:30,272 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:30,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:30,273 INFO L85 PathProgramCache]: Analyzing trace with hash 427252338, now seen corresponding path program 3 times [2024-06-27 19:05:30,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:30,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306444298] [2024-06-27 19:05:30,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:30,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:30,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:30,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:30,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306444298] [2024-06-27 19:05:30,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306444298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:30,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:30,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:05:30,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308620777] [2024-06-27 19:05:30,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:30,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:05:30,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:30,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:05:30,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:05:30,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:05:30,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 119 transitions, 954 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 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) [2024-06-27 19:05:30,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:30,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:05:30,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:31,504 INFO L124 PetriNetUnfolderBase]: 3347/5570 cut-off events. [2024-06-27 19:05:31,504 INFO L125 PetriNetUnfolderBase]: For 23487/23487 co-relation queries the response was YES. [2024-06-27 19:05:31,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21459 conditions, 5570 events. 3347/5570 cut-off events. For 23487/23487 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 35331 event pairs, 1281 based on Foata normal form. 4/5385 useless extension candidates. Maximal degree in co-relation 21411. Up to 4576 conditions per place. [2024-06-27 19:05:31,537 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 117 selfloop transitions, 28 changer transitions 0/155 dead transitions. [2024-06-27 19:05:31,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 155 transitions, 1344 flow [2024-06-27 19:05:31,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:05:31,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:05:31,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 19:05:31,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349544072948328 [2024-06-27 19:05:31,539 INFO L175 Difference]: Start difference. First operand has 104 places, 119 transitions, 954 flow. Second operand 7 states and 176 transitions. [2024-06-27 19:05:31,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 155 transitions, 1344 flow [2024-06-27 19:05:31,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 155 transitions, 1308 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-27 19:05:31,566 INFO L231 Difference]: Finished difference. Result has 109 places, 119 transitions, 982 flow [2024-06-27 19:05:31,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=982, PETRI_PLACES=109, PETRI_TRANSITIONS=119} [2024-06-27 19:05:31,566 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 56 predicate places. [2024-06-27 19:05:31,567 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 119 transitions, 982 flow [2024-06-27 19:05:31,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 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) [2024-06-27 19:05:31,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:31,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:31,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 19:05:31,567 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:31,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:31,568 INFO L85 PathProgramCache]: Analyzing trace with hash 426370628, now seen corresponding path program 1 times [2024-06-27 19:05:31,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:31,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204223395] [2024-06-27 19:05:31,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:31,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:32,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:32,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:32,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204223395] [2024-06-27 19:05:32,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204223395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:32,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:32,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:05:32,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693620240] [2024-06-27 19:05:32,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:32,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:05:32,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:32,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:05:32,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:05:32,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 19:05:32,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 119 transitions, 982 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:32,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:32,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 19:05:32,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:33,153 INFO L124 PetriNetUnfolderBase]: 3134/5281 cut-off events. [2024-06-27 19:05:33,153 INFO L125 PetriNetUnfolderBase]: For 24643/24643 co-relation queries the response was YES. [2024-06-27 19:05:33,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20602 conditions, 5281 events. 3134/5281 cut-off events. For 24643/24643 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 33877 event pairs, 1189 based on Foata normal form. 4/5084 useless extension candidates. Maximal degree in co-relation 20552. Up to 4358 conditions per place. [2024-06-27 19:05:33,186 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 129 selfloop transitions, 17 changer transitions 0/166 dead transitions. [2024-06-27 19:05:33,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 166 transitions, 1417 flow [2024-06-27 19:05:33,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:05:33,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:05:33,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-27 19:05:33,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 19:05:33,189 INFO L175 Difference]: Start difference. First operand has 109 places, 119 transitions, 982 flow. Second operand 8 states and 200 transitions. [2024-06-27 19:05:33,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 166 transitions, 1417 flow [2024-06-27 19:05:33,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 166 transitions, 1333 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 19:05:33,216 INFO L231 Difference]: Finished difference. Result has 112 places, 124 transitions, 984 flow [2024-06-27 19:05:33,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=984, PETRI_PLACES=112, PETRI_TRANSITIONS=124} [2024-06-27 19:05:33,217 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 59 predicate places. [2024-06-27 19:05:33,218 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 124 transitions, 984 flow [2024-06-27 19:05:33,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:33,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:33,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:33,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 19:05:33,218 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:33,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:33,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1784766669, now seen corresponding path program 1 times [2024-06-27 19:05:33,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:33,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412380022] [2024-06-27 19:05:33,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:33,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:33,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:33,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:33,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412380022] [2024-06-27 19:05:33,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412380022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:33,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:33,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:05:33,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442623582] [2024-06-27 19:05:33,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:33,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:05:33,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:33,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:05:33,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:05:33,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 19:05:33,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 124 transitions, 984 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:33,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:33,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 19:05:33,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:34,800 INFO L124 PetriNetUnfolderBase]: 3246/5437 cut-off events. [2024-06-27 19:05:34,808 INFO L125 PetriNetUnfolderBase]: For 29551/29630 co-relation queries the response was YES. [2024-06-27 19:05:34,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21676 conditions, 5437 events. 3246/5437 cut-off events. For 29551/29630 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 35113 event pairs, 1178 based on Foata normal form. 41/5184 useless extension candidates. Maximal degree in co-relation 21625. Up to 4501 conditions per place. [2024-06-27 19:05:34,839 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 114 selfloop transitions, 26 changer transitions 0/166 dead transitions. [2024-06-27 19:05:34,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 166 transitions, 1396 flow [2024-06-27 19:05:34,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:05:34,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:05:34,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-27 19:05:34,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-27 19:05:34,842 INFO L175 Difference]: Start difference. First operand has 112 places, 124 transitions, 984 flow. Second operand 7 states and 182 transitions. [2024-06-27 19:05:34,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 166 transitions, 1396 flow [2024-06-27 19:05:34,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 166 transitions, 1357 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 19:05:34,863 INFO L231 Difference]: Finished difference. Result has 114 places, 127 transitions, 1043 flow [2024-06-27 19:05:34,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1043, PETRI_PLACES=114, PETRI_TRANSITIONS=127} [2024-06-27 19:05:34,863 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 61 predicate places. [2024-06-27 19:05:34,863 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 127 transitions, 1043 flow [2024-06-27 19:05:34,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:34,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:34,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:34,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 19:05:34,864 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:34,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:34,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1779967373, now seen corresponding path program 1 times [2024-06-27 19:05:34,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:34,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849487490] [2024-06-27 19:05:34,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:34,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:35,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:35,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:35,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849487490] [2024-06-27 19:05:35,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849487490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:35,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:35,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:05:35,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966410251] [2024-06-27 19:05:35,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:35,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:05:35,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:35,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:05:35,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:05:35,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:05:35,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 127 transitions, 1043 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:35,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:35,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:05:35,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:36,478 INFO L124 PetriNetUnfolderBase]: 3400/5661 cut-off events. [2024-06-27 19:05:36,478 INFO L125 PetriNetUnfolderBase]: For 31826/31826 co-relation queries the response was YES. [2024-06-27 19:05:36,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22854 conditions, 5661 events. 3400/5661 cut-off events. For 31826/31826 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 36042 event pairs, 1273 based on Foata normal form. 4/5489 useless extension candidates. Maximal degree in co-relation 22802. Up to 4759 conditions per place. [2024-06-27 19:05:36,514 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 145 selfloop transitions, 20 changer transitions 0/175 dead transitions. [2024-06-27 19:05:36,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 175 transitions, 1521 flow [2024-06-27 19:05:36,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:05:36,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:05:36,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 19:05:36,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526595744680851 [2024-06-27 19:05:36,516 INFO L175 Difference]: Start difference. First operand has 114 places, 127 transitions, 1043 flow. Second operand 8 states and 198 transitions. [2024-06-27 19:05:36,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 175 transitions, 1521 flow [2024-06-27 19:05:36,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 175 transitions, 1449 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 19:05:36,546 INFO L231 Difference]: Finished difference. Result has 117 places, 131 transitions, 1058 flow [2024-06-27 19:05:36,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=971, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1058, PETRI_PLACES=117, PETRI_TRANSITIONS=131} [2024-06-27 19:05:36,546 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 64 predicate places. [2024-06-27 19:05:36,546 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 131 transitions, 1058 flow [2024-06-27 19:05:36,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:36,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:36,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:36,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 19:05:36,547 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:36,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:36,548 INFO L85 PathProgramCache]: Analyzing trace with hash 359921331, now seen corresponding path program 2 times [2024-06-27 19:05:36,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:36,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270204968] [2024-06-27 19:05:36,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:36,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:36,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:37,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:37,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:37,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270204968] [2024-06-27 19:05:37,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270204968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:37,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:37,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:05:37,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708730488] [2024-06-27 19:05:37,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:37,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:05:37,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:37,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:05:37,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:05:37,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:05:37,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 131 transitions, 1058 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:37,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:37,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:05:37,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:38,311 INFO L124 PetriNetUnfolderBase]: 3438/5545 cut-off events. [2024-06-27 19:05:38,312 INFO L125 PetriNetUnfolderBase]: For 35982/35982 co-relation queries the response was YES. [2024-06-27 19:05:38,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23937 conditions, 5545 events. 3438/5545 cut-off events. For 35982/35982 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 33702 event pairs, 1139 based on Foata normal form. 2/5419 useless extension candidates. Maximal degree in co-relation 23884. Up to 4760 conditions per place. [2024-06-27 19:05:38,351 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 146 selfloop transitions, 44 changer transitions 0/200 dead transitions. [2024-06-27 19:05:38,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 200 transitions, 1776 flow [2024-06-27 19:05:38,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:05:38,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:05:38,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 19:05:38,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526595744680851 [2024-06-27 19:05:38,353 INFO L175 Difference]: Start difference. First operand has 117 places, 131 transitions, 1058 flow. Second operand 8 states and 198 transitions. [2024-06-27 19:05:38,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 200 transitions, 1776 flow [2024-06-27 19:05:38,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 200 transitions, 1712 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 19:05:38,392 INFO L231 Difference]: Finished difference. Result has 123 places, 156 transitions, 1374 flow [2024-06-27 19:05:38,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1001, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1374, PETRI_PLACES=123, PETRI_TRANSITIONS=156} [2024-06-27 19:05:38,393 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 70 predicate places. [2024-06-27 19:05:38,393 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 156 transitions, 1374 flow [2024-06-27 19:05:38,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:38,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:38,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:38,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 19:05:38,394 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:38,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:38,395 INFO L85 PathProgramCache]: Analyzing trace with hash 369444531, now seen corresponding path program 3 times [2024-06-27 19:05:38,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:38,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728431557] [2024-06-27 19:05:38,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:38,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:39,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:39,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:39,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728431557] [2024-06-27 19:05:39,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728431557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:39,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:39,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:05:39,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030481554] [2024-06-27 19:05:39,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:39,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:05:39,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:39,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:05:39,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:05:39,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:05:39,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 156 transitions, 1374 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:39,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:39,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:05:39,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:40,180 INFO L124 PetriNetUnfolderBase]: 3494/5787 cut-off events. [2024-06-27 19:05:40,181 INFO L125 PetriNetUnfolderBase]: For 43269/43269 co-relation queries the response was YES. [2024-06-27 19:05:40,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26050 conditions, 5787 events. 3494/5787 cut-off events. For 43269/43269 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 36644 event pairs, 1201 based on Foata normal form. 4/5605 useless extension candidates. Maximal degree in co-relation 25992. Up to 4651 conditions per place. [2024-06-27 19:05:40,223 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 157 selfloop transitions, 55 changer transitions 0/222 dead transitions. [2024-06-27 19:05:40,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 222 transitions, 2150 flow [2024-06-27 19:05:40,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:05:40,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:05:40,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-27 19:05:40,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390070921985816 [2024-06-27 19:05:40,225 INFO L175 Difference]: Start difference. First operand has 123 places, 156 transitions, 1374 flow. Second operand 9 states and 228 transitions. [2024-06-27 19:05:40,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 222 transitions, 2150 flow [2024-06-27 19:05:40,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 222 transitions, 2042 flow, removed 53 selfloop flow, removed 1 redundant places. [2024-06-27 19:05:40,277 INFO L231 Difference]: Finished difference. Result has 132 places, 166 transitions, 1550 flow [2024-06-27 19:05:40,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1550, PETRI_PLACES=132, PETRI_TRANSITIONS=166} [2024-06-27 19:05:40,278 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 79 predicate places. [2024-06-27 19:05:40,278 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 166 transitions, 1550 flow [2024-06-27 19:05:40,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:40,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:40,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:40,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 19:05:40,279 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:40,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:40,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1122142649, now seen corresponding path program 1 times [2024-06-27 19:05:40,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:40,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742957092] [2024-06-27 19:05:40,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:40,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:41,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:41,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:41,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742957092] [2024-06-27 19:05:41,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742957092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:41,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:41,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:05:41,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038250651] [2024-06-27 19:05:41,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:41,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:05:41,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:41,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:05:41,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:05:41,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:05:41,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 166 transitions, 1550 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:41,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:41,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:05:41,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:42,196 INFO L124 PetriNetUnfolderBase]: 3612/6043 cut-off events. [2024-06-27 19:05:42,197 INFO L125 PetriNetUnfolderBase]: For 50623/50623 co-relation queries the response was YES. [2024-06-27 19:05:42,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28285 conditions, 6043 events. 3612/6043 cut-off events. For 50623/50623 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 38788 event pairs, 1269 based on Foata normal form. 2/5854 useless extension candidates. Maximal degree in co-relation 28223. Up to 5065 conditions per place. [2024-06-27 19:05:42,237 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 197 selfloop transitions, 36 changer transitions 0/243 dead transitions. [2024-06-27 19:05:42,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 243 transitions, 2407 flow [2024-06-27 19:05:42,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:05:42,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:05:42,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-27 19:05:42,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 19:05:42,239 INFO L175 Difference]: Start difference. First operand has 132 places, 166 transitions, 1550 flow. Second operand 9 states and 225 transitions. [2024-06-27 19:05:42,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 243 transitions, 2407 flow [2024-06-27 19:05:42,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 243 transitions, 2316 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 19:05:42,285 INFO L231 Difference]: Finished difference. Result has 139 places, 190 transitions, 1829 flow [2024-06-27 19:05:42,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1464, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1829, PETRI_PLACES=139, PETRI_TRANSITIONS=190} [2024-06-27 19:05:42,285 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 86 predicate places. [2024-06-27 19:05:42,285 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 190 transitions, 1829 flow [2024-06-27 19:05:42,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:42,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:42,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:42,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 19:05:42,286 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:42,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:42,287 INFO L85 PathProgramCache]: Analyzing trace with hash 506808819, now seen corresponding path program 2 times [2024-06-27 19:05:42,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:42,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051804537] [2024-06-27 19:05:42,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:42,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:42,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:42,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:42,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051804537] [2024-06-27 19:05:42,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051804537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:42,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:42,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:05:42,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735015249] [2024-06-27 19:05:42,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:42,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:05:42,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:42,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:05:42,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:05:43,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:05:43,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 190 transitions, 1829 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:43,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:43,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:05:43,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:44,050 INFO L124 PetriNetUnfolderBase]: 3627/6053 cut-off events. [2024-06-27 19:05:44,050 INFO L125 PetriNetUnfolderBase]: For 56301/56301 co-relation queries the response was YES. [2024-06-27 19:05:44,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29509 conditions, 6053 events. 3627/6053 cut-off events. For 56301/56301 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 38666 event pairs, 1231 based on Foata normal form. 2/5868 useless extension candidates. Maximal degree in co-relation 29442. Up to 5067 conditions per place. [2024-06-27 19:05:44,095 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 211 selfloop transitions, 35 changer transitions 0/256 dead transitions. [2024-06-27 19:05:44,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 256 transitions, 2745 flow [2024-06-27 19:05:44,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:05:44,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:05:44,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 19:05:44,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-27 19:05:44,096 INFO L175 Difference]: Start difference. First operand has 139 places, 190 transitions, 1829 flow. Second operand 8 states and 197 transitions. [2024-06-27 19:05:44,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 256 transitions, 2745 flow [2024-06-27 19:05:44,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 256 transitions, 2584 flow, removed 76 selfloop flow, removed 2 redundant places. [2024-06-27 19:05:44,157 INFO L231 Difference]: Finished difference. Result has 147 places, 212 transitions, 2091 flow [2024-06-27 19:05:44,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1742, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2091, PETRI_PLACES=147, PETRI_TRANSITIONS=212} [2024-06-27 19:05:44,158 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 94 predicate places. [2024-06-27 19:05:44,158 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 212 transitions, 2091 flow [2024-06-27 19:05:44,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:44,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:44,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:44,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 19:05:44,159 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:44,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:44,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1503881, now seen corresponding path program 1 times [2024-06-27 19:05:44,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:44,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064537554] [2024-06-27 19:05:44,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:44,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:44,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:44,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:44,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064537554] [2024-06-27 19:05:44,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064537554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:44,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:44,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:05:44,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905680001] [2024-06-27 19:05:44,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:44,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:05:44,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:44,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:05:44,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:05:45,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:05:45,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 212 transitions, 2091 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:45,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:45,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:05:45,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:46,128 INFO L124 PetriNetUnfolderBase]: 3831/6330 cut-off events. [2024-06-27 19:05:46,128 INFO L125 PetriNetUnfolderBase]: For 69330/69330 co-relation queries the response was YES. [2024-06-27 19:05:46,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32232 conditions, 6330 events. 3831/6330 cut-off events. For 69330/69330 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 40402 event pairs, 1231 based on Foata normal form. 24/6174 useless extension candidates. Maximal degree in co-relation 32161. Up to 5117 conditions per place. [2024-06-27 19:05:46,181 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 235 selfloop transitions, 28 changer transitions 0/273 dead transitions. [2024-06-27 19:05:46,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 273 transitions, 2887 flow [2024-06-27 19:05:46,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:05:46,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:05:46,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-27 19:05:46,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342789598108747 [2024-06-27 19:05:46,183 INFO L175 Difference]: Start difference. First operand has 147 places, 212 transitions, 2091 flow. Second operand 9 states and 226 transitions. [2024-06-27 19:05:46,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 273 transitions, 2887 flow [2024-06-27 19:05:46,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 273 transitions, 2806 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-27 19:05:46,256 INFO L231 Difference]: Finished difference. Result has 153 places, 214 transitions, 2107 flow [2024-06-27 19:05:46,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2010, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2107, PETRI_PLACES=153, PETRI_TRANSITIONS=214} [2024-06-27 19:05:46,256 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 100 predicate places. [2024-06-27 19:05:46,257 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 214 transitions, 2107 flow [2024-06-27 19:05:46,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:46,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:46,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:46,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 19:05:46,257 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:46,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:46,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1424717829, now seen corresponding path program 2 times [2024-06-27 19:05:46,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:46,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090852305] [2024-06-27 19:05:46,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:46,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:46,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:47,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:47,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:47,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090852305] [2024-06-27 19:05:47,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090852305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:47,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:47,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:05:47,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169681691] [2024-06-27 19:05:47,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:47,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:05:47,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:47,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:05:47,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:05:47,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:05:47,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 214 transitions, 2107 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:47,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:47,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:05:47,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:48,167 INFO L124 PetriNetUnfolderBase]: 3868/6207 cut-off events. [2024-06-27 19:05:48,167 INFO L125 PetriNetUnfolderBase]: For 72088/72088 co-relation queries the response was YES. [2024-06-27 19:05:48,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33053 conditions, 6207 events. 3868/6207 cut-off events. For 72088/72088 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 37969 event pairs, 1096 based on Foata normal form. 4/6077 useless extension candidates. Maximal degree in co-relation 32980. Up to 5337 conditions per place. [2024-06-27 19:05:48,219 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 207 selfloop transitions, 55 changer transitions 0/272 dead transitions. [2024-06-27 19:05:48,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 272 transitions, 2882 flow [2024-06-27 19:05:48,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:05:48,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:05:48,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-27 19:05:48,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-06-27 19:05:48,220 INFO L175 Difference]: Start difference. First operand has 153 places, 214 transitions, 2107 flow. Second operand 9 states and 222 transitions. [2024-06-27 19:05:48,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 272 transitions, 2882 flow [2024-06-27 19:05:48,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 272 transitions, 2817 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 19:05:48,387 INFO L231 Difference]: Finished difference. Result has 155 places, 216 transitions, 2198 flow [2024-06-27 19:05:48,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2044, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2198, PETRI_PLACES=155, PETRI_TRANSITIONS=216} [2024-06-27 19:05:48,388 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 102 predicate places. [2024-06-27 19:05:48,388 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 216 transitions, 2198 flow [2024-06-27 19:05:48,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:48,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:48,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:48,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 19:05:48,388 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:48,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:48,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1709817699, now seen corresponding path program 3 times [2024-06-27 19:05:48,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:48,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754518804] [2024-06-27 19:05:48,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:48,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:49,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:49,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:49,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754518804] [2024-06-27 19:05:49,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754518804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:49,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:49,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:05:49,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035983934] [2024-06-27 19:05:49,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:49,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:05:49,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:49,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:05:49,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:05:49,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:05:49,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 216 transitions, 2198 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:49,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:49,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:05:49,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:50,326 INFO L124 PetriNetUnfolderBase]: 3933/6304 cut-off events. [2024-06-27 19:05:50,326 INFO L125 PetriNetUnfolderBase]: For 76768/76768 co-relation queries the response was YES. [2024-06-27 19:05:50,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33893 conditions, 6304 events. 3933/6304 cut-off events. For 76768/76768 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 38563 event pairs, 1094 based on Foata normal form. 4/6175 useless extension candidates. Maximal degree in co-relation 33819. Up to 5431 conditions per place. [2024-06-27 19:05:50,367 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 213 selfloop transitions, 61 changer transitions 0/284 dead transitions. [2024-06-27 19:05:50,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 284 transitions, 3094 flow [2024-06-27 19:05:50,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:05:50,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:05:50,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-27 19:05:50,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224586288416075 [2024-06-27 19:05:50,379 INFO L175 Difference]: Start difference. First operand has 155 places, 216 transitions, 2198 flow. Second operand 9 states and 221 transitions. [2024-06-27 19:05:50,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 284 transitions, 3094 flow [2024-06-27 19:05:50,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 284 transitions, 2952 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 19:05:50,456 INFO L231 Difference]: Finished difference. Result has 159 places, 230 transitions, 2388 flow [2024-06-27 19:05:50,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2064, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2388, PETRI_PLACES=159, PETRI_TRANSITIONS=230} [2024-06-27 19:05:50,456 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 106 predicate places. [2024-06-27 19:05:50,456 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 230 transitions, 2388 flow [2024-06-27 19:05:50,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:50,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:50,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:50,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 19:05:50,457 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:50,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:50,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1719937029, now seen corresponding path program 4 times [2024-06-27 19:05:50,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:50,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571439483] [2024-06-27 19:05:50,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:50,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:51,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:51,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:51,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571439483] [2024-06-27 19:05:51,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571439483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:51,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:51,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:05:51,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311025794] [2024-06-27 19:05:51,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:51,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:05:51,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:51,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:05:51,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:05:51,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:05:51,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 230 transitions, 2388 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:51,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:51,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:05:51,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:52,591 INFO L124 PetriNetUnfolderBase]: 4145/6816 cut-off events. [2024-06-27 19:05:52,592 INFO L125 PetriNetUnfolderBase]: For 95138/95138 co-relation queries the response was YES. [2024-06-27 19:05:52,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37144 conditions, 6816 events. 4145/6816 cut-off events. For 95138/95138 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 43652 event pairs, 1206 based on Foata normal form. 24/6646 useless extension candidates. Maximal degree in co-relation 37067. Up to 5309 conditions per place. [2024-06-27 19:05:52,649 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 230 selfloop transitions, 66 changer transitions 0/306 dead transitions. [2024-06-27 19:05:52,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 306 transitions, 3453 flow [2024-06-27 19:05:52,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:05:52,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:05:52,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 256 transitions. [2024-06-27 19:05:52,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446808510638298 [2024-06-27 19:05:52,651 INFO L175 Difference]: Start difference. First operand has 159 places, 230 transitions, 2388 flow. Second operand 10 states and 256 transitions. [2024-06-27 19:05:52,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 306 transitions, 3453 flow [2024-06-27 19:05:52,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 306 transitions, 3332 flow, removed 51 selfloop flow, removed 2 redundant places. [2024-06-27 19:05:52,773 INFO L231 Difference]: Finished difference. Result has 167 places, 234 transitions, 2501 flow [2024-06-27 19:05:52,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2299, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2501, PETRI_PLACES=167, PETRI_TRANSITIONS=234} [2024-06-27 19:05:52,774 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 114 predicate places. [2024-06-27 19:05:52,774 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 234 transitions, 2501 flow [2024-06-27 19:05:52,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:52,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:52,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:52,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 19:05:52,774 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:52,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:52,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1720293219, now seen corresponding path program 5 times [2024-06-27 19:05:52,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:52,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106385422] [2024-06-27 19:05:52,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:52,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:53,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:53,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:53,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106385422] [2024-06-27 19:05:53,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106385422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:53,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:53,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:05:53,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110361963] [2024-06-27 19:05:53,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:53,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:05:53,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:53,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:05:53,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:05:53,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:05:53,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 234 transitions, 2501 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:53,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:53,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:05:53,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:54,872 INFO L124 PetriNetUnfolderBase]: 4356/7153 cut-off events. [2024-06-27 19:05:54,872 INFO L125 PetriNetUnfolderBase]: For 106428/106428 co-relation queries the response was YES. [2024-06-27 19:05:54,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40324 conditions, 7153 events. 4356/7153 cut-off events. For 106428/106428 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 46319 event pairs, 1133 based on Foata normal form. 4/6962 useless extension candidates. Maximal degree in co-relation 40245. Up to 4991 conditions per place. [2024-06-27 19:05:54,941 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 223 selfloop transitions, 73 changer transitions 0/306 dead transitions. [2024-06-27 19:05:54,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 306 transitions, 3632 flow [2024-06-27 19:05:54,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:05:54,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:05:54,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-27 19:05:54,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508274231678487 [2024-06-27 19:05:54,942 INFO L175 Difference]: Start difference. First operand has 167 places, 234 transitions, 2501 flow. Second operand 9 states and 233 transitions. [2024-06-27 19:05:54,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 306 transitions, 3632 flow [2024-06-27 19:05:55,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 306 transitions, 3488 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 19:05:55,095 INFO L231 Difference]: Finished difference. Result has 169 places, 239 transitions, 2619 flow [2024-06-27 19:05:55,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2357, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2619, PETRI_PLACES=169, PETRI_TRANSITIONS=239} [2024-06-27 19:05:55,095 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 116 predicate places. [2024-06-27 19:05:55,095 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 239 transitions, 2619 flow [2024-06-27 19:05:55,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:55,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:55,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:55,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 19:05:55,096 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:55,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:55,097 INFO L85 PathProgramCache]: Analyzing trace with hash -868348390, now seen corresponding path program 1 times [2024-06-27 19:05:55,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:55,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062963128] [2024-06-27 19:05:55,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:55,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:55,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:55,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:55,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062963128] [2024-06-27 19:05:55,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062963128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:55,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:55,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:05:55,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386943785] [2024-06-27 19:05:55,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:55,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:05:55,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:55,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:05:55,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:05:55,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 19:05:55,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 239 transitions, 2619 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:55,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:55,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 19:05:55,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:57,077 INFO L124 PetriNetUnfolderBase]: 4114/7041 cut-off events. [2024-06-27 19:05:57,078 INFO L125 PetriNetUnfolderBase]: For 106055/106165 co-relation queries the response was YES. [2024-06-27 19:05:57,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38651 conditions, 7041 events. 4114/7041 cut-off events. For 106055/106165 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 48088 event pairs, 981 based on Foata normal form. 26/6734 useless extension candidates. Maximal degree in co-relation 38570. Up to 5601 conditions per place. [2024-06-27 19:05:57,234 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 192 selfloop transitions, 34 changer transitions 0/292 dead transitions. [2024-06-27 19:05:57,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 292 transitions, 3288 flow [2024-06-27 19:05:57,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:05:57,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:05:57,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 19:05:57,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5398936170212766 [2024-06-27 19:05:57,235 INFO L175 Difference]: Start difference. First operand has 169 places, 239 transitions, 2619 flow. Second operand 8 states and 203 transitions. [2024-06-27 19:05:57,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 292 transitions, 3288 flow [2024-06-27 19:05:57,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 292 transitions, 3166 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 19:05:57,327 INFO L231 Difference]: Finished difference. Result has 174 places, 248 transitions, 2684 flow [2024-06-27 19:05:57,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2497, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2684, PETRI_PLACES=174, PETRI_TRANSITIONS=248} [2024-06-27 19:05:57,328 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 121 predicate places. [2024-06-27 19:05:57,328 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 248 transitions, 2684 flow [2024-06-27 19:05:57,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:57,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:57,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:57,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 19:05:57,328 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:57,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:57,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1358573132, now seen corresponding path program 2 times [2024-06-27 19:05:57,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:57,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56739669] [2024-06-27 19:05:57,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:57,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:58,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:58,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:58,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56739669] [2024-06-27 19:05:58,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56739669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:58,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:58,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:05:58,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910759004] [2024-06-27 19:05:58,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:58,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:05:58,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:58,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:05:58,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:05:58,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 19:05:58,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 248 transitions, 2684 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:58,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:58,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 19:05:58,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:59,403 INFO L124 PetriNetUnfolderBase]: 4155/7077 cut-off events. [2024-06-27 19:05:59,404 INFO L125 PetriNetUnfolderBase]: For 113492/113631 co-relation queries the response was YES. [2024-06-27 19:05:59,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39994 conditions, 7077 events. 4155/7077 cut-off events. For 113492/113631 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 48369 event pairs, 1224 based on Foata normal form. 24/6769 useless extension candidates. Maximal degree in co-relation 39909. Up to 5663 conditions per place. [2024-06-27 19:05:59,474 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 194 selfloop transitions, 38 changer transitions 0/298 dead transitions. [2024-06-27 19:05:59,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 298 transitions, 3360 flow [2024-06-27 19:05:59,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:05:59,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:05:59,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-27 19:05:59,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-06-27 19:05:59,476 INFO L175 Difference]: Start difference. First operand has 174 places, 248 transitions, 2684 flow. Second operand 8 states and 204 transitions. [2024-06-27 19:05:59,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 298 transitions, 3360 flow [2024-06-27 19:05:59,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 298 transitions, 3284 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 19:05:59,624 INFO L231 Difference]: Finished difference. Result has 179 places, 253 transitions, 2766 flow [2024-06-27 19:05:59,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2608, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2766, PETRI_PLACES=179, PETRI_TRANSITIONS=253} [2024-06-27 19:05:59,625 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 126 predicate places. [2024-06-27 19:05:59,625 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 253 transitions, 2766 flow [2024-06-27 19:05:59,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:59,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:59,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:59,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 19:05:59,626 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:59,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:59,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1468795054, now seen corresponding path program 1 times [2024-06-27 19:05:59,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:59,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991491529] [2024-06-27 19:05:59,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:59,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:00,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:06:00,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:00,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991491529] [2024-06-27 19:06:00,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991491529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:00,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:00,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:06:00,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262034665] [2024-06-27 19:06:00,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:00,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:06:00,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:00,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:06:00,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:06:00,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:06:00,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 253 transitions, 2766 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:00,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:00,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:06:00,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:02,109 INFO L124 PetriNetUnfolderBase]: 4544/7584 cut-off events. [2024-06-27 19:06:02,109 INFO L125 PetriNetUnfolderBase]: For 127457/127457 co-relation queries the response was YES. [2024-06-27 19:06:02,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44240 conditions, 7584 events. 4544/7584 cut-off events. For 127457/127457 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 50518 event pairs, 1310 based on Foata normal form. 2/7366 useless extension candidates. Maximal degree in co-relation 44153. Up to 6398 conditions per place. [2024-06-27 19:06:02,180 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 258 selfloop transitions, 59 changer transitions 0/327 dead transitions. [2024-06-27 19:06:02,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 327 transitions, 3881 flow [2024-06-27 19:06:02,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:06:02,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:06:02,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 238 transitions. [2024-06-27 19:06:02,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5063829787234042 [2024-06-27 19:06:02,181 INFO L175 Difference]: Start difference. First operand has 179 places, 253 transitions, 2766 flow. Second operand 10 states and 238 transitions. [2024-06-27 19:06:02,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 327 transitions, 3881 flow [2024-06-27 19:06:02,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 327 transitions, 3793 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 19:06:02,353 INFO L231 Difference]: Finished difference. Result has 187 places, 274 transitions, 3176 flow [2024-06-27 19:06:02,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2678, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3176, PETRI_PLACES=187, PETRI_TRANSITIONS=274} [2024-06-27 19:06:02,354 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 134 predicate places. [2024-06-27 19:06:02,354 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 274 transitions, 3176 flow [2024-06-27 19:06:02,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:02,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:02,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:02,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 19:06:02,355 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:02,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:02,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1159271342, now seen corresponding path program 3 times [2024-06-27 19:06:02,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:02,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860989798] [2024-06-27 19:06:02,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:02,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:03,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:06:03,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:03,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860989798] [2024-06-27 19:06:03,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860989798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:03,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:03,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:06:03,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616095832] [2024-06-27 19:06:03,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:03,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:06:03,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:03,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:06:03,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:06:03,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 19:06:03,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 274 transitions, 3176 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:03,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:03,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 19:06:03,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:04,473 INFO L124 PetriNetUnfolderBase]: 4251/7243 cut-off events. [2024-06-27 19:06:04,473 INFO L125 PetriNetUnfolderBase]: For 135548/135704 co-relation queries the response was YES. [2024-06-27 19:06:04,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42811 conditions, 7243 events. 4251/7243 cut-off events. For 135548/135704 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 49696 event pairs, 1197 based on Foata normal form. 26/6934 useless extension candidates. Maximal degree in co-relation 42720. Up to 5829 conditions per place. [2024-06-27 19:06:04,543 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 222 selfloop transitions, 30 changer transitions 0/325 dead transitions. [2024-06-27 19:06:04,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 325 transitions, 3926 flow [2024-06-27 19:06:04,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:06:04,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:06:04,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-27 19:06:04,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372340425531915 [2024-06-27 19:06:04,545 INFO L175 Difference]: Start difference. First operand has 187 places, 274 transitions, 3176 flow. Second operand 8 states and 202 transitions. [2024-06-27 19:06:04,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 325 transitions, 3926 flow [2024-06-27 19:06:04,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 325 transitions, 3741 flow, removed 79 selfloop flow, removed 4 redundant places. [2024-06-27 19:06:04,750 INFO L231 Difference]: Finished difference. Result has 192 places, 280 transitions, 3153 flow [2024-06-27 19:06:04,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2991, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3153, PETRI_PLACES=192, PETRI_TRANSITIONS=280} [2024-06-27 19:06:04,750 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 139 predicate places. [2024-06-27 19:06:04,751 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 280 transitions, 3153 flow [2024-06-27 19:06:04,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:04,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:04,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:04,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 19:06:04,751 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:04,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:04,752 INFO L85 PathProgramCache]: Analyzing trace with hash -46629428, now seen corresponding path program 2 times [2024-06-27 19:06:04,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:04,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920546181] [2024-06-27 19:06:04,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:04,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:05,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:06:05,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:05,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920546181] [2024-06-27 19:06:05,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920546181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:05,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:05,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:06:05,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423323313] [2024-06-27 19:06:05,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:05,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:06:05,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:05,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:06:05,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:06:05,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:06:05,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 280 transitions, 3153 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:05,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:05,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:06:05,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:07,198 INFO L124 PetriNetUnfolderBase]: 4655/7739 cut-off events. [2024-06-27 19:06:07,199 INFO L125 PetriNetUnfolderBase]: For 148107/148107 co-relation queries the response was YES. [2024-06-27 19:06:07,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47118 conditions, 7739 events. 4655/7739 cut-off events. For 148107/148107 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 51571 event pairs, 1308 based on Foata normal form. 2/7527 useless extension candidates. Maximal degree in co-relation 47024. Up to 6569 conditions per place. [2024-06-27 19:06:07,273 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 303 selfloop transitions, 34 changer transitions 0/347 dead transitions. [2024-06-27 19:06:07,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 347 transitions, 4160 flow [2024-06-27 19:06:07,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:06:07,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:06:07,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 246 transitions. [2024-06-27 19:06:07,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234042553191489 [2024-06-27 19:06:07,275 INFO L175 Difference]: Start difference. First operand has 192 places, 280 transitions, 3153 flow. Second operand 10 states and 246 transitions. [2024-06-27 19:06:07,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 347 transitions, 4160 flow [2024-06-27 19:06:07,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 347 transitions, 4062 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 19:06:07,481 INFO L231 Difference]: Finished difference. Result has 198 places, 287 transitions, 3250 flow [2024-06-27 19:06:07,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3055, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3250, PETRI_PLACES=198, PETRI_TRANSITIONS=287} [2024-06-27 19:06:07,481 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 145 predicate places. [2024-06-27 19:06:07,482 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 287 transitions, 3250 flow [2024-06-27 19:06:07,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:07,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:07,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:07,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 19:06:07,482 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:07,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:07,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1665752778, now seen corresponding path program 1 times [2024-06-27 19:06:07,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:07,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483832774] [2024-06-27 19:06:07,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:07,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:07,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:06:08,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:08,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483832774] [2024-06-27 19:06:08,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483832774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:08,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:08,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:06:08,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752445191] [2024-06-27 19:06:08,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:08,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:06:08,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:08,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:06:08,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:06:08,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:06:08,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 287 transitions, 3250 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:08,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:08,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:06:08,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:09,515 INFO L124 PetriNetUnfolderBase]: 4757/7799 cut-off events. [2024-06-27 19:06:09,515 INFO L125 PetriNetUnfolderBase]: For 160214/160216 co-relation queries the response was YES. [2024-06-27 19:06:09,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48592 conditions, 7799 events. 4757/7799 cut-off events. For 160214/160216 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 51704 event pairs, 1333 based on Foata normal form. 4/7609 useless extension candidates. Maximal degree in co-relation 48496. Up to 6559 conditions per place. [2024-06-27 19:06:09,593 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 264 selfloop transitions, 69 changer transitions 0/343 dead transitions. [2024-06-27 19:06:09,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 343 transitions, 4360 flow [2024-06-27 19:06:09,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:06:09,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:06:09,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-27 19:06:09,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5379939209726444 [2024-06-27 19:06:09,594 INFO L175 Difference]: Start difference. First operand has 198 places, 287 transitions, 3250 flow. Second operand 7 states and 177 transitions. [2024-06-27 19:06:09,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 343 transitions, 4360 flow [2024-06-27 19:06:09,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 343 transitions, 4239 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-27 19:06:09,826 INFO L231 Difference]: Finished difference. Result has 200 places, 303 transitions, 3496 flow [2024-06-27 19:06:09,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3129, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3496, PETRI_PLACES=200, PETRI_TRANSITIONS=303} [2024-06-27 19:06:09,826 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 147 predicate places. [2024-06-27 19:06:09,826 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 303 transitions, 3496 flow [2024-06-27 19:06:09,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:09,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:09,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:09,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 19:06:09,827 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:09,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:09,827 INFO L85 PathProgramCache]: Analyzing trace with hash -2079229276, now seen corresponding path program 4 times [2024-06-27 19:06:09,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:09,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075233440] [2024-06-27 19:06:09,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:09,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:10,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:06:10,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:10,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075233440] [2024-06-27 19:06:10,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075233440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:10,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:10,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:06:10,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136530606] [2024-06-27 19:06:10,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:10,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:06:10,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:10,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:06:10,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:06:10,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 19:06:10,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 303 transitions, 3496 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:10,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:10,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 19:06:10,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:12,083 INFO L124 PetriNetUnfolderBase]: 4398/7421 cut-off events. [2024-06-27 19:06:12,083 INFO L125 PetriNetUnfolderBase]: For 161710/161860 co-relation queries the response was YES. [2024-06-27 19:06:12,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46102 conditions, 7421 events. 4398/7421 cut-off events. For 161710/161860 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 50604 event pairs, 1094 based on Foata normal form. 25/7113 useless extension candidates. Maximal degree in co-relation 46003. Up to 5913 conditions per place. [2024-06-27 19:06:12,143 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 236 selfloop transitions, 43 changer transitions 0/354 dead transitions. [2024-06-27 19:06:12,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 354 transitions, 4310 flow [2024-06-27 19:06:12,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:06:12,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:06:12,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 19:06:12,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5398936170212766 [2024-06-27 19:06:12,144 INFO L175 Difference]: Start difference. First operand has 200 places, 303 transitions, 3496 flow. Second operand 8 states and 203 transitions. [2024-06-27 19:06:12,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 354 transitions, 4310 flow [2024-06-27 19:06:12,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 354 transitions, 4254 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-06-27 19:06:12,344 INFO L231 Difference]: Finished difference. Result has 207 places, 309 transitions, 3629 flow [2024-06-27 19:06:12,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3440, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3629, PETRI_PLACES=207, PETRI_TRANSITIONS=309} [2024-06-27 19:06:12,344 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 154 predicate places. [2024-06-27 19:06:12,344 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 309 transitions, 3629 flow [2024-06-27 19:06:12,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:12,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:12,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:12,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 19:06:12,345 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:12,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:12,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1216570622, now seen corresponding path program 3 times [2024-06-27 19:06:12,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:12,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084626143] [2024-06-27 19:06:12,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:12,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:13,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:06:13,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:13,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084626143] [2024-06-27 19:06:13,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084626143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:13,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:13,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:06:13,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996127317] [2024-06-27 19:06:13,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:13,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:06:13,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:13,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:06:13,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:06:13,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:06:13,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 309 transitions, 3629 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:13,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:13,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:06:13,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:14,941 INFO L124 PetriNetUnfolderBase]: 4803/7536 cut-off events. [2024-06-27 19:06:14,941 INFO L125 PetriNetUnfolderBase]: For 174829/174829 co-relation queries the response was YES. [2024-06-27 19:06:14,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50341 conditions, 7536 events. 4803/7536 cut-off events. For 174829/174829 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 46675 event pairs, 1012 based on Foata normal form. 2/7431 useless extension candidates. Maximal degree in co-relation 50239. Up to 6429 conditions per place. [2024-06-27 19:06:15,006 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 243 selfloop transitions, 138 changer transitions 0/391 dead transitions. [2024-06-27 19:06:15,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 391 transitions, 5185 flow [2024-06-27 19:06:15,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:06:15,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:06:15,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 256 transitions. [2024-06-27 19:06:15,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446808510638298 [2024-06-27 19:06:15,008 INFO L175 Difference]: Start difference. First operand has 207 places, 309 transitions, 3629 flow. Second operand 10 states and 256 transitions. [2024-06-27 19:06:15,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 391 transitions, 5185 flow [2024-06-27 19:06:15,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 391 transitions, 5057 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-27 19:06:15,229 INFO L231 Difference]: Finished difference. Result has 214 places, 326 transitions, 4293 flow [2024-06-27 19:06:15,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3501, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4293, PETRI_PLACES=214, PETRI_TRANSITIONS=326} [2024-06-27 19:06:15,230 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 161 predicate places. [2024-06-27 19:06:15,230 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 326 transitions, 4293 flow [2024-06-27 19:06:15,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:15,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:15,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:15,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 19:06:15,231 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:15,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:15,231 INFO L85 PathProgramCache]: Analyzing trace with hash -2008203980, now seen corresponding path program 4 times [2024-06-27 19:06:15,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:15,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043670553] [2024-06-27 19:06:15,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:15,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:16,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:06:16,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:16,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043670553] [2024-06-27 19:06:16,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043670553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:16,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:16,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:06:16,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870965070] [2024-06-27 19:06:16,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:16,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:06:16,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:16,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:06:16,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:06:16,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:06:16,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 326 transitions, 4293 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:16,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:16,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:06:16,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:17,725 INFO L124 PetriNetUnfolderBase]: 4849/8049 cut-off events. [2024-06-27 19:06:17,725 INFO L125 PetriNetUnfolderBase]: For 191756/191756 co-relation queries the response was YES. [2024-06-27 19:06:17,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52916 conditions, 8049 events. 4849/8049 cut-off events. For 191756/191756 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 53915 event pairs, 1209 based on Foata normal form. 2/7809 useless extension candidates. Maximal degree in co-relation 52811. Up to 6728 conditions per place. [2024-06-27 19:06:17,793 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 326 selfloop transitions, 50 changer transitions 0/386 dead transitions. [2024-06-27 19:06:17,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 386 transitions, 5349 flow [2024-06-27 19:06:17,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:06:17,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:06:17,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-27 19:06:17,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295508274231678 [2024-06-27 19:06:17,794 INFO L175 Difference]: Start difference. First operand has 214 places, 326 transitions, 4293 flow. Second operand 9 states and 224 transitions. [2024-06-27 19:06:17,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 386 transitions, 5349 flow [2024-06-27 19:06:18,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 386 transitions, 5102 flow, removed 117 selfloop flow, removed 2 redundant places. [2024-06-27 19:06:18,155 INFO L231 Difference]: Finished difference. Result has 222 places, 333 transitions, 4261 flow [2024-06-27 19:06:18,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4048, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4261, PETRI_PLACES=222, PETRI_TRANSITIONS=333} [2024-06-27 19:06:18,155 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 169 predicate places. [2024-06-27 19:06:18,155 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 333 transitions, 4261 flow [2024-06-27 19:06:18,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:18,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:18,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:18,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 19:06:18,156 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:18,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:18,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1208952062, now seen corresponding path program 5 times [2024-06-27 19:06:18,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:18,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623694250] [2024-06-27 19:06:18,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:18,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:19,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:06:19,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:19,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623694250] [2024-06-27 19:06:19,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623694250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:19,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:19,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:06:19,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833777358] [2024-06-27 19:06:19,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:19,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:06:19,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:19,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:06:19,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:06:19,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:06:19,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 333 transitions, 4261 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:19,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:19,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:06:19,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:20,856 INFO L124 PetriNetUnfolderBase]: 4844/8042 cut-off events. [2024-06-27 19:06:20,857 INFO L125 PetriNetUnfolderBase]: For 191932/191932 co-relation queries the response was YES. [2024-06-27 19:06:20,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52669 conditions, 8042 events. 4844/8042 cut-off events. For 191932/191932 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 53864 event pairs, 1211 based on Foata normal form. 2/7802 useless extension candidates. Maximal degree in co-relation 52561. Up to 6721 conditions per place. [2024-06-27 19:06:20,944 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 325 selfloop transitions, 51 changer transitions 0/386 dead transitions. [2024-06-27 19:06:20,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 386 transitions, 5226 flow [2024-06-27 19:06:20,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:06:20,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:06:20,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 19:06:20,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271867612293144 [2024-06-27 19:06:20,945 INFO L175 Difference]: Start difference. First operand has 222 places, 333 transitions, 4261 flow. Second operand 9 states and 223 transitions. [2024-06-27 19:06:20,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 386 transitions, 5226 flow [2024-06-27 19:06:21,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 386 transitions, 5046 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-27 19:06:21,334 INFO L231 Difference]: Finished difference. Result has 226 places, 334 transitions, 4210 flow [2024-06-27 19:06:21,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4081, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4210, PETRI_PLACES=226, PETRI_TRANSITIONS=334} [2024-06-27 19:06:21,335 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 173 predicate places. [2024-06-27 19:06:21,335 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 334 transitions, 4210 flow [2024-06-27 19:06:21,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:21,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:21,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:21,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 19:06:21,335 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:21,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:21,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1778431230, now seen corresponding path program 6 times [2024-06-27 19:06:21,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:21,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716137359] [2024-06-27 19:06:21,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:21,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:22,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:06:22,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:22,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716137359] [2024-06-27 19:06:22,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716137359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:22,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:22,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:06:22,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937768874] [2024-06-27 19:06:22,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:22,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:06:22,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:22,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:06:22,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:06:22,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:06:22,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 334 transitions, 4210 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:22,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:22,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:06:22,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:24,161 INFO L124 PetriNetUnfolderBase]: 4877/8087 cut-off events. [2024-06-27 19:06:24,162 INFO L125 PetriNetUnfolderBase]: For 201280/201280 co-relation queries the response was YES. [2024-06-27 19:06:24,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53204 conditions, 8087 events. 4877/8087 cut-off events. For 201280/201280 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 54328 event pairs, 1196 based on Foata normal form. 2/7850 useless extension candidates. Maximal degree in co-relation 53094. Up to 6552 conditions per place. [2024-06-27 19:06:24,254 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 308 selfloop transitions, 81 changer transitions 0/399 dead transitions. [2024-06-27 19:06:24,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 399 transitions, 5522 flow [2024-06-27 19:06:24,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:06:24,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:06:24,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-27 19:06:24,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342789598108747 [2024-06-27 19:06:24,256 INFO L175 Difference]: Start difference. First operand has 226 places, 334 transitions, 4210 flow. Second operand 9 states and 226 transitions. [2024-06-27 19:06:24,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 399 transitions, 5522 flow [2024-06-27 19:06:24,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 399 transitions, 5420 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 19:06:24,570 INFO L231 Difference]: Finished difference. Result has 231 places, 345 transitions, 4521 flow [2024-06-27 19:06:24,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4108, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4521, PETRI_PLACES=231, PETRI_TRANSITIONS=345} [2024-06-27 19:06:24,571 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 178 predicate places. [2024-06-27 19:06:24,571 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 345 transitions, 4521 flow [2024-06-27 19:06:24,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:24,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:24,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:24,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 19:06:24,571 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:24,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:24,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1464732000, now seen corresponding path program 7 times [2024-06-27 19:06:24,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:24,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95196444] [2024-06-27 19:06:24,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:24,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:25,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:06:25,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:25,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95196444] [2024-06-27 19:06:25,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95196444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:25,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:25,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:06:25,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923457001] [2024-06-27 19:06:25,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:25,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:06:25,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:25,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:06:25,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:06:25,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:06:25,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 345 transitions, 4521 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:25,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:25,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:06:25,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:27,115 INFO L124 PetriNetUnfolderBase]: 4882/7661 cut-off events. [2024-06-27 19:06:27,115 INFO L125 PetriNetUnfolderBase]: For 212102/212102 co-relation queries the response was YES. [2024-06-27 19:06:27,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54138 conditions, 7661 events. 4882/7661 cut-off events. For 212102/212102 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 47743 event pairs, 1012 based on Foata normal form. 2/7560 useless extension candidates. Maximal degree in co-relation 54027. Up to 6532 conditions per place. [2024-06-27 19:06:27,201 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 250 selfloop transitions, 158 changer transitions 0/418 dead transitions. [2024-06-27 19:06:27,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 418 transitions, 5847 flow [2024-06-27 19:06:27,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:06:27,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:06:27,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2024-06-27 19:06:27,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5382978723404256 [2024-06-27 19:06:27,203 INFO L175 Difference]: Start difference. First operand has 231 places, 345 transitions, 4521 flow. Second operand 10 states and 253 transitions. [2024-06-27 19:06:27,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 418 transitions, 5847 flow [2024-06-27 19:06:27,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 418 transitions, 5675 flow, removed 58 selfloop flow, removed 4 redundant places. [2024-06-27 19:06:27,641 INFO L231 Difference]: Finished difference. Result has 238 places, 357 transitions, 5020 flow [2024-06-27 19:06:27,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4349, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5020, PETRI_PLACES=238, PETRI_TRANSITIONS=357} [2024-06-27 19:06:27,641 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 185 predicate places. [2024-06-27 19:06:27,641 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 357 transitions, 5020 flow [2024-06-27 19:06:27,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:27,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:27,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:27,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 19:06:27,642 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:27,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:27,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1251970668, now seen corresponding path program 2 times [2024-06-27 19:06:27,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:27,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458106551] [2024-06-27 19:06:27,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:27,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:28,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:06:28,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:28,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458106551] [2024-06-27 19:06:28,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458106551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:28,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:28,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:06:28,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993276328] [2024-06-27 19:06:28,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:28,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:06:28,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:28,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:06:28,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:06:28,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:06:28,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 357 transitions, 5020 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:28,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:28,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:06:28,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:29,702 INFO L124 PetriNetUnfolderBase]: 4950/8150 cut-off events. [2024-06-27 19:06:29,702 INFO L125 PetriNetUnfolderBase]: For 233721/233723 co-relation queries the response was YES. [2024-06-27 19:06:29,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56602 conditions, 8150 events. 4950/8150 cut-off events. For 233721/233723 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 54922 event pairs, 1340 based on Foata normal form. 4/7949 useless extension candidates. Maximal degree in co-relation 56488. Up to 6902 conditions per place. [2024-06-27 19:06:29,792 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 316 selfloop transitions, 58 changer transitions 0/384 dead transitions. [2024-06-27 19:06:29,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 384 transitions, 5926 flow [2024-06-27 19:06:29,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:06:29,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:06:29,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-06-27 19:06:29,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5574468085106383 [2024-06-27 19:06:29,793 INFO L175 Difference]: Start difference. First operand has 238 places, 357 transitions, 5020 flow. Second operand 5 states and 131 transitions. [2024-06-27 19:06:29,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 384 transitions, 5926 flow [2024-06-27 19:06:30,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 384 transitions, 5679 flow, removed 100 selfloop flow, removed 3 redundant places. [2024-06-27 19:06:30,245 INFO L231 Difference]: Finished difference. Result has 240 places, 360 transitions, 4992 flow [2024-06-27 19:06:30,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4773, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4992, PETRI_PLACES=240, PETRI_TRANSITIONS=360} [2024-06-27 19:06:30,245 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 187 predicate places. [2024-06-27 19:06:30,245 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 360 transitions, 4992 flow [2024-06-27 19:06:30,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:30,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:30,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:30,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 19:06:30,246 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:30,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:30,246 INFO L85 PathProgramCache]: Analyzing trace with hash -2070372976, now seen corresponding path program 3 times [2024-06-27 19:06:30,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:30,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095363043] [2024-06-27 19:06:30,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:30,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:30,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:06:30,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:30,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095363043] [2024-06-27 19:06:30,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095363043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:30,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:30,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:06:30,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560091237] [2024-06-27 19:06:30,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:30,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:06:30,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:30,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:06:30,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:06:30,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:06:30,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 360 transitions, 4992 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:30,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:30,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:06:30,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:32,332 INFO L124 PetriNetUnfolderBase]: 4938/8132 cut-off events. [2024-06-27 19:06:32,333 INFO L125 PetriNetUnfolderBase]: For 231780/231782 co-relation queries the response was YES. [2024-06-27 19:06:32,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56274 conditions, 8132 events. 4938/8132 cut-off events. For 231780/231782 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 54748 event pairs, 1334 based on Foata normal form. 4/7931 useless extension candidates. Maximal degree in co-relation 56158. Up to 6774 conditions per place. [2024-06-27 19:06:32,425 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 317 selfloop transitions, 64 changer transitions 0/391 dead transitions. [2024-06-27 19:06:32,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 391 transitions, 5916 flow [2024-06-27 19:06:32,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:06:32,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:06:32,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-27 19:06:32,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2024-06-27 19:06:32,427 INFO L175 Difference]: Start difference. First operand has 240 places, 360 transitions, 4992 flow. Second operand 6 states and 154 transitions. [2024-06-27 19:06:32,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 391 transitions, 5916 flow [2024-06-27 19:06:32,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 391 transitions, 5805 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-27 19:06:32,791 INFO L231 Difference]: Finished difference. Result has 243 places, 360 transitions, 5025 flow [2024-06-27 19:06:32,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4881, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5025, PETRI_PLACES=243, PETRI_TRANSITIONS=360} [2024-06-27 19:06:32,792 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 190 predicate places. [2024-06-27 19:06:32,792 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 360 transitions, 5025 flow [2024-06-27 19:06:32,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:32,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:32,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:32,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 19:06:32,793 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:32,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:32,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1458080709, now seen corresponding path program 1 times [2024-06-27 19:06:32,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:32,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647669113] [2024-06-27 19:06:32,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:32,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:32,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:33,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:06:33,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:33,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647669113] [2024-06-27 19:06:33,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647669113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:33,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:33,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:06:33,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267557017] [2024-06-27 19:06:33,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:33,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:06:33,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:33,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:06:33,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:06:33,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 19:06:33,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 360 transitions, 5025 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 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) [2024-06-27 19:06:33,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:33,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 19:06:33,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:34,785 INFO L124 PetriNetUnfolderBase]: 4797/8111 cut-off events. [2024-06-27 19:06:34,786 INFO L125 PetriNetUnfolderBase]: For 233909/233983 co-relation queries the response was YES. [2024-06-27 19:06:34,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55682 conditions, 8111 events. 4797/8111 cut-off events. For 233909/233983 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 55916 event pairs, 1202 based on Foata normal form. 7/7855 useless extension candidates. Maximal degree in co-relation 55565. Up to 6684 conditions per place. [2024-06-27 19:06:34,878 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 338 selfloop transitions, 28 changer transitions 0/400 dead transitions. [2024-06-27 19:06:34,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 400 transitions, 6031 flow [2024-06-27 19:06:34,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:06:34,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:06:34,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-27 19:06:34,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541033434650456 [2024-06-27 19:06:34,879 INFO L175 Difference]: Start difference. First operand has 243 places, 360 transitions, 5025 flow. Second operand 7 states and 178 transitions. [2024-06-27 19:06:34,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 400 transitions, 6031 flow [2024-06-27 19:06:35,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 400 transitions, 5890 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 19:06:35,213 INFO L231 Difference]: Finished difference. Result has 245 places, 366 transitions, 5026 flow [2024-06-27 19:06:35,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4886, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5026, PETRI_PLACES=245, PETRI_TRANSITIONS=366} [2024-06-27 19:06:35,214 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 192 predicate places. [2024-06-27 19:06:35,214 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 366 transitions, 5026 flow [2024-06-27 19:06:35,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 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) [2024-06-27 19:06:35,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:35,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:35,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 19:06:35,215 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:35,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:35,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1457960739, now seen corresponding path program 2 times [2024-06-27 19:06:35,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:35,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273598376] [2024-06-27 19:06:35,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:35,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:35,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:06:35,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:35,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273598376] [2024-06-27 19:06:35,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273598376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:35,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:35,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:06:35,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634620561] [2024-06-27 19:06:35,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:35,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:06:35,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:35,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:06:35,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:06:35,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 19:06:35,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 366 transitions, 5026 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 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) [2024-06-27 19:06:35,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:35,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 19:06:35,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:37,525 INFO L124 PetriNetUnfolderBase]: 4874/8235 cut-off events. [2024-06-27 19:06:37,525 INFO L125 PetriNetUnfolderBase]: For 238820/238890 co-relation queries the response was YES. [2024-06-27 19:06:37,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56619 conditions, 8235 events. 4874/8235 cut-off events. For 238820/238890 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 56847 event pairs, 1202 based on Foata normal form. 5/7975 useless extension candidates. Maximal degree in co-relation 56502. Up to 6813 conditions per place. [2024-06-27 19:06:37,603 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 342 selfloop transitions, 28 changer transitions 0/404 dead transitions. [2024-06-27 19:06:37,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 404 transitions, 5970 flow [2024-06-27 19:06:37,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:06:37,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:06:37,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 19:06:37,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258358662613982 [2024-06-27 19:06:37,604 INFO L175 Difference]: Start difference. First operand has 245 places, 366 transitions, 5026 flow. Second operand 7 states and 173 transitions. [2024-06-27 19:06:37,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 404 transitions, 5970 flow [2024-06-27 19:06:37,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 404 transitions, 5908 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-27 19:06:37,975 INFO L231 Difference]: Finished difference. Result has 249 places, 374 transitions, 5121 flow [2024-06-27 19:06:37,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4971, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5121, PETRI_PLACES=249, PETRI_TRANSITIONS=374} [2024-06-27 19:06:37,976 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 196 predicate places. [2024-06-27 19:06:37,976 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 374 transitions, 5121 flow [2024-06-27 19:06:37,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 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) [2024-06-27 19:06:37,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:37,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:37,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 19:06:37,977 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:37,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:37,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1894216517, now seen corresponding path program 3 times [2024-06-27 19:06:37,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:37,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867185000] [2024-06-27 19:06:37,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:37,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:38,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:06:38,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:38,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867185000] [2024-06-27 19:06:38,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867185000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:38,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:38,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:06:38,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989305636] [2024-06-27 19:06:38,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:38,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:06:38,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:38,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:06:38,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:06:38,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 19:06:38,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 374 transitions, 5121 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 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) [2024-06-27 19:06:38,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:38,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 19:06:38,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:40,012 INFO L124 PetriNetUnfolderBase]: 4872/8245 cut-off events. [2024-06-27 19:06:40,012 INFO L125 PetriNetUnfolderBase]: For 240047/240121 co-relation queries the response was YES. [2024-06-27 19:06:40,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56720 conditions, 8245 events. 4872/8245 cut-off events. For 240047/240121 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 57007 event pairs, 1206 based on Foata normal form. 7/7980 useless extension candidates. Maximal degree in co-relation 56601. Up to 6812 conditions per place. [2024-06-27 19:06:40,135 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 341 selfloop transitions, 26 changer transitions 0/401 dead transitions. [2024-06-27 19:06:40,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 401 transitions, 5955 flow [2024-06-27 19:06:40,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:06:40,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:06:40,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-27 19:06:40,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2024-06-27 19:06:40,136 INFO L175 Difference]: Start difference. First operand has 249 places, 374 transitions, 5121 flow. Second operand 6 states and 154 transitions. [2024-06-27 19:06:40,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 401 transitions, 5955 flow [2024-06-27 19:06:40,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 401 transitions, 5858 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-27 19:06:40,523 INFO L231 Difference]: Finished difference. Result has 251 places, 374 transitions, 5087 flow [2024-06-27 19:06:40,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5024, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5087, PETRI_PLACES=251, PETRI_TRANSITIONS=374} [2024-06-27 19:06:40,523 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 198 predicate places. [2024-06-27 19:06:40,524 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 374 transitions, 5087 flow [2024-06-27 19:06:40,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 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) [2024-06-27 19:06:40,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:40,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:40,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 19:06:40,524 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:40,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:40,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1858191262, now seen corresponding path program 1 times [2024-06-27 19:06:40,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:40,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005837981] [2024-06-27 19:06:40,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:40,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:41,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:06:41,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:41,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005837981] [2024-06-27 19:06:41,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005837981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:41,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:41,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:06:41,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158248427] [2024-06-27 19:06:41,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:41,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:06:41,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:41,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:06:41,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:06:41,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:06:41,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 374 transitions, 5087 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:41,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:41,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:06:41,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:42,706 INFO L124 PetriNetUnfolderBase]: 5107/8354 cut-off events. [2024-06-27 19:06:42,706 INFO L125 PetriNetUnfolderBase]: For 243184/243186 co-relation queries the response was YES. [2024-06-27 19:06:42,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57990 conditions, 8354 events. 5107/8354 cut-off events. For 243184/243186 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 55857 event pairs, 1380 based on Foata normal form. 2/8152 useless extension candidates. Maximal degree in co-relation 57870. Up to 7306 conditions per place. [2024-06-27 19:06:42,804 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 367 selfloop transitions, 17 changer transitions 0/394 dead transitions. [2024-06-27 19:06:42,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 394 transitions, 5949 flow [2024-06-27 19:06:42,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:06:42,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:06:42,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-27 19:06:42,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148936170212766 [2024-06-27 19:06:42,805 INFO L175 Difference]: Start difference. First operand has 251 places, 374 transitions, 5087 flow. Second operand 5 states and 121 transitions. [2024-06-27 19:06:42,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 394 transitions, 5949 flow [2024-06-27 19:06:43,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 394 transitions, 5886 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 19:06:43,177 INFO L231 Difference]: Finished difference. Result has 251 places, 376 transitions, 5091 flow [2024-06-27 19:06:43,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5024, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5091, PETRI_PLACES=251, PETRI_TRANSITIONS=376} [2024-06-27 19:06:43,178 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 198 predicate places. [2024-06-27 19:06:43,178 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 376 transitions, 5091 flow [2024-06-27 19:06:43,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:43,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:43,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:43,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 19:06:43,179 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:43,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:43,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1622321460, now seen corresponding path program 1 times [2024-06-27 19:06:43,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:43,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346822509] [2024-06-27 19:06:43,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:43,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:43,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:06:43,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:43,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346822509] [2024-06-27 19:06:43,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346822509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:43,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:43,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:06:43,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258166277] [2024-06-27 19:06:43,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:43,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:06:43,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:43,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:06:43,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:06:44,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:06:44,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 376 transitions, 5091 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:44,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:44,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:06:44,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:45,784 INFO L124 PetriNetUnfolderBase]: 5144/8306 cut-off events. [2024-06-27 19:06:45,784 INFO L125 PetriNetUnfolderBase]: For 252071/252071 co-relation queries the response was YES. [2024-06-27 19:06:45,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58635 conditions, 8306 events. 5144/8306 cut-off events. For 252071/252071 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 54946 event pairs, 1000 based on Foata normal form. 4/8134 useless extension candidates. Maximal degree in co-relation 58514. Up to 7215 conditions per place. [2024-06-27 19:06:45,869 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 396 selfloop transitions, 30 changer transitions 0/436 dead transitions. [2024-06-27 19:06:45,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 436 transitions, 6267 flow [2024-06-27 19:06:45,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:06:45,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:06:45,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-27 19:06:45,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5200945626477541 [2024-06-27 19:06:45,870 INFO L175 Difference]: Start difference. First operand has 251 places, 376 transitions, 5091 flow. Second operand 9 states and 220 transitions. [2024-06-27 19:06:45,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 436 transitions, 6267 flow [2024-06-27 19:06:46,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 436 transitions, 6216 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 19:06:46,219 INFO L231 Difference]: Finished difference. Result has 259 places, 383 transitions, 5268 flow [2024-06-27 19:06:46,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5040, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5268, PETRI_PLACES=259, PETRI_TRANSITIONS=383} [2024-06-27 19:06:46,220 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 206 predicate places. [2024-06-27 19:06:46,220 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 383 transitions, 5268 flow [2024-06-27 19:06:46,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:46,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:46,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:46,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 19:06:46,221 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:46,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:46,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1711987410, now seen corresponding path program 2 times [2024-06-27 19:06:46,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:46,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433790925] [2024-06-27 19:06:46,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:46,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:47,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:06:47,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:47,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433790925] [2024-06-27 19:06:47,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433790925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:47,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:47,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:06:47,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400768479] [2024-06-27 19:06:47,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:47,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:06:47,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:47,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:06:47,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:06:47,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:06:47,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 383 transitions, 5268 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:47,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:47,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:06:47,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:48,767 INFO L124 PetriNetUnfolderBase]: 5186/8353 cut-off events. [2024-06-27 19:06:48,767 INFO L125 PetriNetUnfolderBase]: For 265538/265538 co-relation queries the response was YES. [2024-06-27 19:06:48,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59858 conditions, 8353 events. 5186/8353 cut-off events. For 265538/265538 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 55175 event pairs, 1247 based on Foata normal form. 4/8185 useless extension candidates. Maximal degree in co-relation 59734. Up to 7245 conditions per place. [2024-06-27 19:06:48,865 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 353 selfloop transitions, 82 changer transitions 0/445 dead transitions. [2024-06-27 19:06:48,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 445 transitions, 6481 flow [2024-06-27 19:06:48,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:06:48,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:06:48,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-27 19:06:48,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295508274231678 [2024-06-27 19:06:48,867 INFO L175 Difference]: Start difference. First operand has 259 places, 383 transitions, 5268 flow. Second operand 9 states and 224 transitions. [2024-06-27 19:06:48,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 445 transitions, 6481 flow [2024-06-27 19:06:49,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 445 transitions, 6336 flow, removed 59 selfloop flow, removed 4 redundant places. [2024-06-27 19:06:49,328 INFO L231 Difference]: Finished difference. Result has 266 places, 389 transitions, 5506 flow [2024-06-27 19:06:49,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5123, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5506, PETRI_PLACES=266, PETRI_TRANSITIONS=389} [2024-06-27 19:06:49,328 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 213 predicate places. [2024-06-27 19:06:49,328 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 389 transitions, 5506 flow [2024-06-27 19:06:49,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:49,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:49,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:49,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 19:06:49,329 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:49,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:49,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1711809780, now seen corresponding path program 3 times [2024-06-27 19:06:49,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:49,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562338826] [2024-06-27 19:06:49,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:49,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:49,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:50,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:06:50,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:50,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562338826] [2024-06-27 19:06:50,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562338826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:50,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:50,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:06:50,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767733471] [2024-06-27 19:06:50,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:50,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:06:50,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:50,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:06:50,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:06:50,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:06:50,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 389 transitions, 5506 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:50,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:50,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:06:50,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:51,924 INFO L124 PetriNetUnfolderBase]: 5231/8425 cut-off events. [2024-06-27 19:06:51,925 INFO L125 PetriNetUnfolderBase]: For 277698/277698 co-relation queries the response was YES. [2024-06-27 19:06:51,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60899 conditions, 8425 events. 5231/8425 cut-off events. For 277698/277698 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 55733 event pairs, 1275 based on Foata normal form. 4/8256 useless extension candidates. Maximal degree in co-relation 60771. Up to 7280 conditions per place. [2024-06-27 19:06:52,033 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 400 selfloop transitions, 39 changer transitions 0/449 dead transitions. [2024-06-27 19:06:52,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 449 transitions, 6748 flow [2024-06-27 19:06:52,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:06:52,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:06:52,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 19:06:52,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271867612293144 [2024-06-27 19:06:52,040 INFO L175 Difference]: Start difference. First operand has 266 places, 389 transitions, 5506 flow. Second operand 9 states and 223 transitions. [2024-06-27 19:06:52,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 449 transitions, 6748 flow [2024-06-27 19:06:52,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 449 transitions, 6513 flow, removed 76 selfloop flow, removed 4 redundant places. [2024-06-27 19:06:52,606 INFO L231 Difference]: Finished difference. Result has 272 places, 395 transitions, 5544 flow [2024-06-27 19:06:52,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5327, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5544, PETRI_PLACES=272, PETRI_TRANSITIONS=395} [2024-06-27 19:06:52,606 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 219 predicate places. [2024-06-27 19:06:52,607 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 395 transitions, 5544 flow [2024-06-27 19:06:52,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:52,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:52,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:52,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 19:06:52,607 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:52,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:52,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1607795448, now seen corresponding path program 1 times [2024-06-27 19:06:52,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:52,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31194639] [2024-06-27 19:06:52,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:52,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:53,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:06:53,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:53,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31194639] [2024-06-27 19:06:53,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31194639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:53,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:53,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:06:53,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945238216] [2024-06-27 19:06:53,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:53,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:06:53,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:53,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:06:53,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:06:53,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:06:53,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 395 transitions, 5544 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:53,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:53,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:06:53,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:55,629 INFO L124 PetriNetUnfolderBase]: 5361/8673 cut-off events. [2024-06-27 19:06:55,629 INFO L125 PetriNetUnfolderBase]: For 307393/307393 co-relation queries the response was YES. [2024-06-27 19:06:55,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63001 conditions, 8673 events. 5361/8673 cut-off events. For 307393/307393 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 57925 event pairs, 1297 based on Foata normal form. 16/8504 useless extension candidates. Maximal degree in co-relation 62872. Up to 7389 conditions per place. [2024-06-27 19:06:55,734 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 391 selfloop transitions, 60 changer transitions 0/461 dead transitions. [2024-06-27 19:06:55,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 461 transitions, 6770 flow [2024-06-27 19:06:55,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:06:55,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:06:55,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 264 transitions. [2024-06-27 19:06:55,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 19:06:55,735 INFO L175 Difference]: Start difference. First operand has 272 places, 395 transitions, 5544 flow. Second operand 11 states and 264 transitions. [2024-06-27 19:06:55,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 461 transitions, 6770 flow [2024-06-27 19:06:56,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 461 transitions, 6646 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-27 19:06:56,345 INFO L231 Difference]: Finished difference. Result has 279 places, 396 transitions, 5591 flow [2024-06-27 19:06:56,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5420, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5591, PETRI_PLACES=279, PETRI_TRANSITIONS=396} [2024-06-27 19:06:56,345 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 226 predicate places. [2024-06-27 19:06:56,345 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 396 transitions, 5591 flow [2024-06-27 19:06:56,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:56,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:56,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:56,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 19:06:56,346 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:56,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:56,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1299393792, now seen corresponding path program 4 times [2024-06-27 19:06:56,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:56,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907328976] [2024-06-27 19:06:56,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:56,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:57,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:06:57,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:57,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907328976] [2024-06-27 19:06:57,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907328976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:57,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:57,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:06:57,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146269223] [2024-06-27 19:06:57,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:57,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:06:57,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:57,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:06:57,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:06:57,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:06:57,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 396 transitions, 5591 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:57,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:57,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:06:57,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:59,125 INFO L124 PetriNetUnfolderBase]: 5398/8702 cut-off events. [2024-06-27 19:06:59,125 INFO L125 PetriNetUnfolderBase]: For 305382/305382 co-relation queries the response was YES. [2024-06-27 19:06:59,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63565 conditions, 8702 events. 5398/8702 cut-off events. For 305382/305382 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 57801 event pairs, 1310 based on Foata normal form. 4/8529 useless extension candidates. Maximal degree in co-relation 63434. Up to 7568 conditions per place. [2024-06-27 19:06:59,226 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 414 selfloop transitions, 32 changer transitions 0/456 dead transitions. [2024-06-27 19:06:59,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 456 transitions, 6840 flow [2024-06-27 19:06:59,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:06:59,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:06:59,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-27 19:06:59,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-06-27 19:06:59,227 INFO L175 Difference]: Start difference. First operand has 279 places, 396 transitions, 5591 flow. Second operand 9 states and 222 transitions. [2024-06-27 19:06:59,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 456 transitions, 6840 flow [2024-06-27 19:06:59,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 456 transitions, 6699 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 19:06:59,729 INFO L231 Difference]: Finished difference. Result has 280 places, 402 transitions, 5691 flow [2024-06-27 19:06:59,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5450, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5691, PETRI_PLACES=280, PETRI_TRANSITIONS=402} [2024-06-27 19:06:59,730 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 227 predicate places. [2024-06-27 19:06:59,730 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 402 transitions, 5691 flow [2024-06-27 19:06:59,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:59,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:59,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:59,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 19:06:59,730 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:59,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:59,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1063033858, now seen corresponding path program 2 times [2024-06-27 19:06:59,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:59,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601334877] [2024-06-27 19:06:59,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:59,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:00,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:07:00,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:00,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601334877] [2024-06-27 19:07:00,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601334877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:00,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:00,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:07:00,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254777053] [2024-06-27 19:07:00,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:00,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:07:00,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:00,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:07:00,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:07:01,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:07:01,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 402 transitions, 5691 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:07:01,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:01,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:07:01,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:03,235 INFO L124 PetriNetUnfolderBase]: 5763/9301 cut-off events. [2024-06-27 19:07:03,235 INFO L125 PetriNetUnfolderBase]: For 338075/338075 co-relation queries the response was YES. [2024-06-27 19:07:03,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68680 conditions, 9301 events. 5763/9301 cut-off events. For 338075/338075 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 62508 event pairs, 1388 based on Foata normal form. 16/9127 useless extension candidates. Maximal degree in co-relation 68547. Up to 7952 conditions per place. [2024-06-27 19:07:03,352 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 449 selfloop transitions, 44 changer transitions 0/503 dead transitions. [2024-06-27 19:07:03,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 503 transitions, 7619 flow [2024-06-27 19:07:03,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:07:03,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:07:03,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 287 transitions. [2024-06-27 19:07:03,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5088652482269503 [2024-06-27 19:07:03,353 INFO L175 Difference]: Start difference. First operand has 280 places, 402 transitions, 5691 flow. Second operand 12 states and 287 transitions. [2024-06-27 19:07:03,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 503 transitions, 7619 flow [2024-06-27 19:07:04,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 503 transitions, 7391 flow, removed 87 selfloop flow, removed 4 redundant places. [2024-06-27 19:07:04,030 INFO L231 Difference]: Finished difference. Result has 295 places, 434 transitions, 6285 flow [2024-06-27 19:07:04,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5512, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6285, PETRI_PLACES=295, PETRI_TRANSITIONS=434} [2024-06-27 19:07:04,031 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 242 predicate places. [2024-06-27 19:07:04,031 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 434 transitions, 6285 flow [2024-06-27 19:07:04,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:07:04,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:04,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:04,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 19:07:04,031 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:07:04,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:04,032 INFO L85 PathProgramCache]: Analyzing trace with hash 30647750, now seen corresponding path program 3 times [2024-06-27 19:07:04,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:04,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101890418] [2024-06-27 19:07:04,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:04,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:04,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:07:04,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:04,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101890418] [2024-06-27 19:07:04,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101890418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:04,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:04,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:07:04,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613533572] [2024-06-27 19:07:04,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:04,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:07:04,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:04,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:07:04,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:07:05,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:07:05,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 434 transitions, 6285 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:07:05,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:05,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:07:05,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:07,550 INFO L124 PetriNetUnfolderBase]: 6269/10154 cut-off events. [2024-06-27 19:07:07,551 INFO L125 PetriNetUnfolderBase]: For 374333/374333 co-relation queries the response was YES. [2024-06-27 19:07:07,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76173 conditions, 10154 events. 6269/10154 cut-off events. For 374333/374333 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 69210 event pairs, 1531 based on Foata normal form. 16/9959 useless extension candidates. Maximal degree in co-relation 76032. Up to 8277 conditions per place. [2024-06-27 19:07:07,672 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 413 selfloop transitions, 139 changer transitions 0/562 dead transitions. [2024-06-27 19:07:07,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 562 transitions, 8925 flow [2024-06-27 19:07:07,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:07:07,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:07:07,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 277 transitions. [2024-06-27 19:07:07,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357833655705996 [2024-06-27 19:07:07,673 INFO L175 Difference]: Start difference. First operand has 295 places, 434 transitions, 6285 flow. Second operand 11 states and 277 transitions. [2024-06-27 19:07:07,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 562 transitions, 8925 flow [2024-06-27 19:07:08,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 562 transitions, 8832 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-06-27 19:07:08,350 INFO L231 Difference]: Finished difference. Result has 308 places, 488 transitions, 7887 flow [2024-06-27 19:07:08,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6227, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7887, PETRI_PLACES=308, PETRI_TRANSITIONS=488} [2024-06-27 19:07:08,350 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 255 predicate places. [2024-06-27 19:07:08,351 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 488 transitions, 7887 flow [2024-06-27 19:07:08,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:07:08,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:08,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:08,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 19:07:08,351 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:07:08,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:08,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1808495376, now seen corresponding path program 4 times [2024-06-27 19:07:08,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:08,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020504500] [2024-06-27 19:07:08,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:08,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:09,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:07:09,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:09,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020504500] [2024-06-27 19:07:09,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020504500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:09,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:09,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:07:09,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306582820] [2024-06-27 19:07:09,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:09,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:07:09,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:09,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:07:09,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:07:09,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:07:09,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 488 transitions, 7887 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:07:09,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:09,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:07:09,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:11,745 INFO L124 PetriNetUnfolderBase]: 6625/10711 cut-off events. [2024-06-27 19:07:11,745 INFO L125 PetriNetUnfolderBase]: For 408662/408662 co-relation queries the response was YES. [2024-06-27 19:07:11,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82451 conditions, 10711 events. 6625/10711 cut-off events. For 408662/408662 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 73548 event pairs, 1624 based on Foata normal form. 12/10518 useless extension candidates. Maximal degree in co-relation 82304. Up to 8569 conditions per place. [2024-06-27 19:07:11,920 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 491 selfloop transitions, 68 changer transitions 0/569 dead transitions. [2024-06-27 19:07:11,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 569 transitions, 9559 flow [2024-06-27 19:07:11,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:07:11,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:07:11,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 275 transitions. [2024-06-27 19:07:11,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 19:07:11,922 INFO L175 Difference]: Start difference. First operand has 308 places, 488 transitions, 7887 flow. Second operand 11 states and 275 transitions. [2024-06-27 19:07:11,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 569 transitions, 9559 flow [2024-06-27 19:07:13,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 569 transitions, 9232 flow, removed 134 selfloop flow, removed 4 redundant places. [2024-06-27 19:07:13,145 INFO L231 Difference]: Finished difference. Result has 317 places, 497 transitions, 7929 flow [2024-06-27 19:07:13,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7592, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7929, PETRI_PLACES=317, PETRI_TRANSITIONS=497} [2024-06-27 19:07:13,146 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 264 predicate places. [2024-06-27 19:07:13,146 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 497 transitions, 7929 flow [2024-06-27 19:07:13,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:07:13,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:13,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:13,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 19:07:13,147 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:07:13,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:13,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1341015920, now seen corresponding path program 5 times [2024-06-27 19:07:13,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:13,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187789005] [2024-06-27 19:07:13,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:13,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:14,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:07:14,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:14,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187789005] [2024-06-27 19:07:14,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187789005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:14,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:14,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:07:14,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275356988] [2024-06-27 19:07:14,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:14,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:07:14,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:14,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:07:14,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:07:14,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:07:14,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 497 transitions, 7929 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:07:14,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:14,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:07:14,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:16,763 INFO L124 PetriNetUnfolderBase]: 6718/10781 cut-off events. [2024-06-27 19:07:16,763 INFO L125 PetriNetUnfolderBase]: For 416907/416907 co-relation queries the response was YES. [2024-06-27 19:07:16,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83910 conditions, 10781 events. 6718/10781 cut-off events. For 416907/416907 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 73567 event pairs, 1413 based on Foata normal form. 12/10607 useless extension candidates. Maximal degree in co-relation 83759. Up to 7962 conditions per place. [2024-06-27 19:07:16,909 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 461 selfloop transitions, 90 changer transitions 0/561 dead transitions. [2024-06-27 19:07:16,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 561 transitions, 9399 flow [2024-06-27 19:07:16,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:07:16,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:07:16,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2024-06-27 19:07:16,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5340425531914894 [2024-06-27 19:07:16,910 INFO L175 Difference]: Start difference. First operand has 317 places, 497 transitions, 7929 flow. Second operand 10 states and 251 transitions. [2024-06-27 19:07:16,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 561 transitions, 9399 flow [2024-06-27 19:07:18,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 561 transitions, 9287 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 19:07:18,013 INFO L231 Difference]: Finished difference. Result has 322 places, 498 transitions, 8059 flow [2024-06-27 19:07:18,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7817, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8059, PETRI_PLACES=322, PETRI_TRANSITIONS=498} [2024-06-27 19:07:18,013 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 269 predicate places. [2024-06-27 19:07:18,013 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 498 transitions, 8059 flow [2024-06-27 19:07:18,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:07:18,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:18,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:18,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 19:07:18,014 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:07:18,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:18,014 INFO L85 PathProgramCache]: Analyzing trace with hash -2124787408, now seen corresponding path program 5 times [2024-06-27 19:07:18,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:18,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870313950] [2024-06-27 19:07:18,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:18,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:18,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:07:18,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:18,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870313950] [2024-06-27 19:07:18,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870313950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:18,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:18,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:07:18,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161801535] [2024-06-27 19:07:18,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:18,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:07:18,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:18,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:07:18,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:07:18,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:07:18,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 498 transitions, 8059 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:07:18,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:18,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:07:18,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:21,402 INFO L124 PetriNetUnfolderBase]: 6755/11174 cut-off events. [2024-06-27 19:07:21,402 INFO L125 PetriNetUnfolderBase]: For 421804/421804 co-relation queries the response was YES. [2024-06-27 19:07:21,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85038 conditions, 11174 events. 6755/11174 cut-off events. For 421804/421804 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 78795 event pairs, 1441 based on Foata normal form. 4/10867 useless extension candidates. Maximal degree in co-relation 84886. Up to 9377 conditions per place. [2024-06-27 19:07:21,568 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 462 selfloop transitions, 77 changer transitions 0/549 dead transitions. [2024-06-27 19:07:21,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 549 transitions, 9372 flow [2024-06-27 19:07:21,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:07:21,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:07:21,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-27 19:07:21,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295508274231678 [2024-06-27 19:07:21,569 INFO L175 Difference]: Start difference. First operand has 322 places, 498 transitions, 8059 flow. Second operand 9 states and 224 transitions. [2024-06-27 19:07:21,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 549 transitions, 9372 flow [2024-06-27 19:07:22,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 549 transitions, 9158 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 19:07:22,641 INFO L231 Difference]: Finished difference. Result has 323 places, 500 transitions, 8059 flow [2024-06-27 19:07:22,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7845, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8059, PETRI_PLACES=323, PETRI_TRANSITIONS=500} [2024-06-27 19:07:22,641 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 270 predicate places. [2024-06-27 19:07:22,641 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 500 transitions, 8059 flow [2024-06-27 19:07:22,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:07:22,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:22,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:22,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 19:07:22,642 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:07:22,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:22,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1177197914, now seen corresponding path program 6 times [2024-06-27 19:07:22,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:22,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854088975] [2024-06-27 19:07:22,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:22,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:23,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:07:23,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:23,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854088975] [2024-06-27 19:07:23,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854088975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:23,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:23,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:07:23,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245164042] [2024-06-27 19:07:23,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:23,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:07:23,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:23,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:07:23,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:07:23,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:07:23,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 500 transitions, 8059 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:07:23,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:23,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:07:23,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:26,045 INFO L124 PetriNetUnfolderBase]: 6747/11162 cut-off events. [2024-06-27 19:07:26,045 INFO L125 PetriNetUnfolderBase]: For 407992/407992 co-relation queries the response was YES. [2024-06-27 19:07:26,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84000 conditions, 11162 events. 6747/11162 cut-off events. For 407992/407992 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 78729 event pairs, 1430 based on Foata normal form. 4/10855 useless extension candidates. Maximal degree in co-relation 83847. Up to 9365 conditions per place. [2024-06-27 19:07:26,199 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 463 selfloop transitions, 78 changer transitions 0/551 dead transitions. [2024-06-27 19:07:26,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 551 transitions, 9380 flow [2024-06-27 19:07:26,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:07:26,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:07:26,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 19:07:26,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271867612293144 [2024-06-27 19:07:26,201 INFO L175 Difference]: Start difference. First operand has 323 places, 500 transitions, 8059 flow. Second operand 9 states and 223 transitions. [2024-06-27 19:07:26,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 551 transitions, 9380 flow [2024-06-27 19:07:27,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 551 transitions, 9187 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 19:07:27,277 INFO L231 Difference]: Finished difference. Result has 325 places, 502 transitions, 8086 flow [2024-06-27 19:07:27,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7866, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8086, PETRI_PLACES=325, PETRI_TRANSITIONS=502} [2024-06-27 19:07:27,277 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 272 predicate places. [2024-06-27 19:07:27,277 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 502 transitions, 8086 flow [2024-06-27 19:07:27,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:07:27,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:27,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:27,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 19:07:27,278 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:07:27,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:27,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1177375544, now seen corresponding path program 7 times [2024-06-27 19:07:27,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:27,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48713930] [2024-06-27 19:07:27,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:27,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:28,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:07:28,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:28,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48713930] [2024-06-27 19:07:28,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48713930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:28,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:28,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:07:28,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955611696] [2024-06-27 19:07:28,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:28,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:07:28,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:28,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:07:28,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:07:28,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:07:28,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 502 transitions, 8086 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:07:28,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:28,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:07:28,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:30,528 INFO L124 PetriNetUnfolderBase]: 6747/11030 cut-off events. [2024-06-27 19:07:30,528 INFO L125 PetriNetUnfolderBase]: For 413530/413530 co-relation queries the response was YES. [2024-06-27 19:07:30,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83881 conditions, 11030 events. 6747/11030 cut-off events. For 413530/413530 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 77202 event pairs, 1411 based on Foata normal form. 4/10757 useless extension candidates. Maximal degree in co-relation 83727. Up to 9220 conditions per place. [2024-06-27 19:07:30,680 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 463 selfloop transitions, 85 changer transitions 0/558 dead transitions. [2024-06-27 19:07:30,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 558 transitions, 9555 flow [2024-06-27 19:07:30,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:07:30,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:07:30,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-27 19:07:30,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295508274231678 [2024-06-27 19:07:30,681 INFO L175 Difference]: Start difference. First operand has 325 places, 502 transitions, 8086 flow. Second operand 9 states and 224 transitions. [2024-06-27 19:07:30,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 558 transitions, 9555 flow [2024-06-27 19:07:31,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 558 transitions, 9356 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 19:07:31,810 INFO L231 Difference]: Finished difference. Result has 328 places, 508 transitions, 8269 flow [2024-06-27 19:07:31,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7887, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8269, PETRI_PLACES=328, PETRI_TRANSITIONS=508} [2024-06-27 19:07:31,811 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 275 predicate places. [2024-06-27 19:07:31,811 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 508 transitions, 8269 flow [2024-06-27 19:07:31,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:07:31,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:31,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:31,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 19:07:31,811 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:07:31,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:31,811 INFO L85 PathProgramCache]: Analyzing trace with hash -941015610, now seen corresponding path program 6 times [2024-06-27 19:07:31,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:31,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125219681] [2024-06-27 19:07:31,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:31,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:32,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:07:32,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:32,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125219681] [2024-06-27 19:07:32,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125219681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:32,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:32,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:07:32,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64142164] [2024-06-27 19:07:32,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:32,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:07:32,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:32,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:07:32,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:07:32,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:07:32,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 508 transitions, 8269 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:07:32,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:32,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:07:32,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:35,356 INFO L124 PetriNetUnfolderBase]: 6877/10634 cut-off events. [2024-06-27 19:07:35,356 INFO L125 PetriNetUnfolderBase]: For 449973/449973 co-relation queries the response was YES. [2024-06-27 19:07:35,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85929 conditions, 10634 events. 6877/10634 cut-off events. For 449973/449973 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 69463 event pairs, 1061 based on Foata normal form. 16/10560 useless extension candidates. Maximal degree in co-relation 85773. Up to 9101 conditions per place. [2024-06-27 19:07:35,502 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 366 selfloop transitions, 194 changer transitions 0/570 dead transitions. [2024-06-27 19:07:35,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 570 transitions, 9727 flow [2024-06-27 19:07:35,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:07:35,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:07:35,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2024-06-27 19:07:35,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5382978723404256 [2024-06-27 19:07:35,503 INFO L175 Difference]: Start difference. First operand has 328 places, 508 transitions, 8269 flow. Second operand 10 states and 253 transitions. [2024-06-27 19:07:35,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 570 transitions, 9727 flow [2024-06-27 19:07:36,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 570 transitions, 9484 flow, removed 79 selfloop flow, removed 5 redundant places. [2024-06-27 19:07:36,951 INFO L231 Difference]: Finished difference. Result has 333 places, 509 transitions, 8479 flow [2024-06-27 19:07:36,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8026, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8479, PETRI_PLACES=333, PETRI_TRANSITIONS=509} [2024-06-27 19:07:36,951 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 280 predicate places. [2024-06-27 19:07:36,951 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 509 transitions, 8479 flow [2024-06-27 19:07:36,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:07:36,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:36,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:36,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 19:07:36,952 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:07:36,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:36,952 INFO L85 PathProgramCache]: Analyzing trace with hash -940718940, now seen corresponding path program 7 times [2024-06-27 19:07:36,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:36,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797765304] [2024-06-27 19:07:36,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:36,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:37,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:07:37,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:37,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797765304] [2024-06-27 19:07:37,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797765304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:37,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:37,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:07:37,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850564885] [2024-06-27 19:07:37,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:37,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:07:37,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:37,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:07:37,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:07:38,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:07:38,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 509 transitions, 8479 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:07:38,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:38,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:07:38,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:40,806 INFO L124 PetriNetUnfolderBase]: 7111/11031 cut-off events. [2024-06-27 19:07:40,806 INFO L125 PetriNetUnfolderBase]: For 484475/484475 co-relation queries the response was YES. [2024-06-27 19:07:40,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90104 conditions, 11031 events. 7111/11031 cut-off events. For 484475/484475 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 72578 event pairs, 1084 based on Foata normal form. 12/10958 useless extension candidates. Maximal degree in co-relation 89946. Up to 9040 conditions per place. [2024-06-27 19:07:40,991 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 369 selfloop transitions, 207 changer transitions 0/586 dead transitions. [2024-06-27 19:07:40,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 586 transitions, 10320 flow [2024-06-27 19:07:40,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:07:40,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:07:40,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 284 transitions. [2024-06-27 19:07:40,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5493230174081238 [2024-06-27 19:07:40,992 INFO L175 Difference]: Start difference. First operand has 333 places, 509 transitions, 8479 flow. Second operand 11 states and 284 transitions. [2024-06-27 19:07:40,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 586 transitions, 10320 flow [2024-06-27 19:07:42,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 586 transitions, 9893 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 19:07:42,311 INFO L231 Difference]: Finished difference. Result has 337 places, 512 transitions, 8635 flow [2024-06-27 19:07:42,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8054, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8635, PETRI_PLACES=337, PETRI_TRANSITIONS=512} [2024-06-27 19:07:42,312 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 284 predicate places. [2024-06-27 19:07:42,312 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 512 transitions, 8635 flow [2024-06-27 19:07:42,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:07:42,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:42,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:42,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 19:07:42,312 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:07:42,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:42,313 INFO L85 PathProgramCache]: Analyzing trace with hash -949289820, now seen corresponding path program 8 times [2024-06-27 19:07:42,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:42,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117419882] [2024-06-27 19:07:42,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:42,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:43,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:07:43,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:43,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117419882] [2024-06-27 19:07:43,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117419882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:43,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:43,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:07:43,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672254646] [2024-06-27 19:07:43,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:43,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:07:43,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:43,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:07:43,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:07:43,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:07:43,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 512 transitions, 8635 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:07:43,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:43,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:07:43,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:46,238 INFO L124 PetriNetUnfolderBase]: 7334/11975 cut-off events. [2024-06-27 19:07:46,238 INFO L125 PetriNetUnfolderBase]: For 517573/517573 co-relation queries the response was YES. [2024-06-27 19:07:46,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93018 conditions, 11975 events. 7334/11975 cut-off events. For 517573/517573 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 84926 event pairs, 1500 based on Foata normal form. 28/11707 useless extension candidates. Maximal degree in co-relation 92858. Up to 9826 conditions per place. [2024-06-27 19:07:46,417 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 462 selfloop transitions, 102 changer transitions 0/574 dead transitions. [2024-06-27 19:07:46,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 574 transitions, 10100 flow [2024-06-27 19:07:46,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:07:46,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:07:46,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 252 transitions. [2024-06-27 19:07:46,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361702127659574 [2024-06-27 19:07:46,418 INFO L175 Difference]: Start difference. First operand has 337 places, 512 transitions, 8635 flow. Second operand 10 states and 252 transitions. [2024-06-27 19:07:46,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 574 transitions, 10100 flow [2024-06-27 19:07:47,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 574 transitions, 9918 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-27 19:07:47,734 INFO L231 Difference]: Finished difference. Result has 341 places, 514 transitions, 8726 flow [2024-06-27 19:07:47,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8455, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8726, PETRI_PLACES=341, PETRI_TRANSITIONS=514} [2024-06-27 19:07:47,735 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 288 predicate places. [2024-06-27 19:07:47,735 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 514 transitions, 8726 flow [2024-06-27 19:07:47,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:07:47,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:47,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:47,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 19:07:47,736 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:07:47,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:47,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1177190970, now seen corresponding path program 9 times [2024-06-27 19:07:47,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:47,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80135709] [2024-06-27 19:07:47,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:47,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:48,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:07:48,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:48,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80135709] [2024-06-27 19:07:48,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80135709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:48,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:48,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:07:48,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697192746] [2024-06-27 19:07:48,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:48,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:07:48,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:48,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:07:48,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:07:48,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:07:48,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 514 transitions, 8726 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:07:48,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:48,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:07:48,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:51,697 INFO L124 PetriNetUnfolderBase]: 7306/12036 cut-off events. [2024-06-27 19:07:51,697 INFO L125 PetriNetUnfolderBase]: For 483703/483703 co-relation queries the response was YES. [2024-06-27 19:07:51,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92100 conditions, 12036 events. 7306/12036 cut-off events. For 483703/483703 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 86243 event pairs, 1602 based on Foata normal form. 16/11742 useless extension candidates. Maximal degree in co-relation 91938. Up to 10087 conditions per place. [2024-06-27 19:07:52,175 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 484 selfloop transitions, 80 changer transitions 0/574 dead transitions. [2024-06-27 19:07:52,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 574 transitions, 10136 flow [2024-06-27 19:07:52,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:07:52,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:07:52,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 249 transitions. [2024-06-27 19:07:52,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5297872340425532 [2024-06-27 19:07:52,187 INFO L175 Difference]: Start difference. First operand has 341 places, 514 transitions, 8726 flow. Second operand 10 states and 249 transitions. [2024-06-27 19:07:52,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 574 transitions, 10136 flow [2024-06-27 19:07:53,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 574 transitions, 9776 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-27 19:07:53,588 INFO L231 Difference]: Finished difference. Result has 342 places, 514 transitions, 8533 flow [2024-06-27 19:07:53,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8366, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8533, PETRI_PLACES=342, PETRI_TRANSITIONS=514} [2024-06-27 19:07:53,588 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 289 predicate places. [2024-06-27 19:07:53,588 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 514 transitions, 8533 flow [2024-06-27 19:07:53,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:07:53,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:53,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:53,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 19:07:53,589 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:07:53,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:53,589 INFO L85 PathProgramCache]: Analyzing trace with hash -702909276, now seen corresponding path program 10 times [2024-06-27 19:07:53,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:53,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416327797] [2024-06-27 19:07:53,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:53,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:54,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:07:54,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:54,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416327797] [2024-06-27 19:07:54,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416327797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:54,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:54,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:07:54,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843969475] [2024-06-27 19:07:54,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:54,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:07:54,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:54,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:07:54,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:07:54,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:07:54,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 514 transitions, 8533 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:07:54,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:54,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:07:54,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:57,933 INFO L124 PetriNetUnfolderBase]: 7575/11725 cut-off events. [2024-06-27 19:07:57,934 INFO L125 PetriNetUnfolderBase]: For 526669/526669 co-relation queries the response was YES. [2024-06-27 19:07:58,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96199 conditions, 11725 events. 7575/11725 cut-off events. For 526669/526669 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 78003 event pairs, 1152 based on Foata normal form. 12/11663 useless extension candidates. Maximal degree in co-relation 96036. Up to 9630 conditions per place. [2024-06-27 19:07:58,167 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 307 selfloop transitions, 283 changer transitions 0/600 dead transitions. [2024-06-27 19:07:58,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 600 transitions, 10726 flow [2024-06-27 19:07:58,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:07:58,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:07:58,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 284 transitions. [2024-06-27 19:07:58,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5493230174081238 [2024-06-27 19:07:58,168 INFO L175 Difference]: Start difference. First operand has 342 places, 514 transitions, 8533 flow. Second operand 11 states and 284 transitions. [2024-06-27 19:07:58,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 600 transitions, 10726 flow [2024-06-27 19:07:59,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 600 transitions, 10565 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 19:07:59,511 INFO L231 Difference]: Finished difference. Result has 348 places, 524 transitions, 9483 flow [2024-06-27 19:07:59,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8372, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=274, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9483, PETRI_PLACES=348, PETRI_TRANSITIONS=524} [2024-06-27 19:07:59,511 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 295 predicate places. [2024-06-27 19:07:59,512 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 524 transitions, 9483 flow [2024-06-27 19:07:59,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:07:59,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:59,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:59,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 19:07:59,512 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:07:59,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:59,512 INFO L85 PathProgramCache]: Analyzing trace with hash -703205946, now seen corresponding path program 11 times [2024-06-27 19:07:59,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:59,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296322933] [2024-06-27 19:07:59,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:59,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:08:00,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:08:00,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:08:00,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296322933] [2024-06-27 19:08:00,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296322933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:08:00,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:08:00,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:08:00,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549812360] [2024-06-27 19:08:00,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:08:00,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:08:00,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:08:00,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:08:00,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:08:00,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:08:00,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 524 transitions, 9483 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:08:00,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:08:00,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:08:00,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:08:03,926 INFO L124 PetriNetUnfolderBase]: 7547/11671 cut-off events. [2024-06-27 19:08:03,926 INFO L125 PetriNetUnfolderBase]: For 554742/554742 co-relation queries the response was YES. [2024-06-27 19:08:04,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98808 conditions, 11671 events. 7547/11671 cut-off events. For 554742/554742 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 77504 event pairs, 1179 based on Foata normal form. 16/11608 useless extension candidates. Maximal degree in co-relation 98641. Up to 9795 conditions per place. [2024-06-27 19:08:04,083 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 305 selfloop transitions, 275 changer transitions 0/590 dead transitions. [2024-06-27 19:08:04,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 590 transitions, 11141 flow [2024-06-27 19:08:04,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:08:04,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:08:04,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 252 transitions. [2024-06-27 19:08:04,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361702127659574 [2024-06-27 19:08:04,084 INFO L175 Difference]: Start difference. First operand has 348 places, 524 transitions, 9483 flow. Second operand 10 states and 252 transitions. [2024-06-27 19:08:04,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 590 transitions, 11141 flow [2024-06-27 19:08:06,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 590 transitions, 10625 flow, removed 155 selfloop flow, removed 4 redundant places. [2024-06-27 19:08:06,098 INFO L231 Difference]: Finished difference. Result has 355 places, 528 transitions, 9716 flow [2024-06-27 19:08:06,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9055, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9716, PETRI_PLACES=355, PETRI_TRANSITIONS=528} [2024-06-27 19:08:06,098 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 302 predicate places. [2024-06-27 19:08:06,098 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 528 transitions, 9716 flow [2024-06-27 19:08:06,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:08:06,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:08:06,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:08:06,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 19:08:06,099 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:08:06,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:08:06,100 INFO L85 PathProgramCache]: Analyzing trace with hash -360610686, now seen corresponding path program 12 times [2024-06-27 19:08:06,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:08:06,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373874506] [2024-06-27 19:08:06,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:08:06,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:08:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:08:07,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:08:07,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:08:07,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373874506] [2024-06-27 19:08:07,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373874506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:08:07,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:08:07,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:08:07,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169998660] [2024-06-27 19:08:07,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:08:07,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:08:07,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:08:07,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:08:07,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:08:07,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:08:07,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 528 transitions, 9716 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:08:07,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:08:07,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:08:07,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:08:11,574 INFO L124 PetriNetUnfolderBase]: 8040/12492 cut-off events. [2024-06-27 19:08:11,574 INFO L125 PetriNetUnfolderBase]: For 588798/588798 co-relation queries the response was YES. [2024-06-27 19:08:11,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105812 conditions, 12492 events. 8040/12492 cut-off events. For 588798/588798 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 83819 event pairs, 1085 based on Foata normal form. 12/12430 useless extension candidates. Maximal degree in co-relation 105642. Up to 7593 conditions per place. [2024-06-27 19:08:11,752 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 293 selfloop transitions, 310 changer transitions 0/613 dead transitions. [2024-06-27 19:08:11,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 613 transitions, 11845 flow [2024-06-27 19:08:11,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:08:11,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:08:11,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 284 transitions. [2024-06-27 19:08:11,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5493230174081238 [2024-06-27 19:08:11,753 INFO L175 Difference]: Start difference. First operand has 355 places, 528 transitions, 9716 flow. Second operand 11 states and 284 transitions. [2024-06-27 19:08:11,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 613 transitions, 11845 flow [2024-06-27 19:08:13,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 613 transitions, 11300 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-27 19:08:13,911 INFO L231 Difference]: Finished difference. Result has 362 places, 536 transitions, 10180 flow [2024-06-27 19:08:13,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9177, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=303, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10180, PETRI_PLACES=362, PETRI_TRANSITIONS=536} [2024-06-27 19:08:13,912 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 309 predicate places. [2024-06-27 19:08:13,912 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 536 transitions, 10180 flow [2024-06-27 19:08:13,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:08:13,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:08:13,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:08:13,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 19:08:13,913 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:08:13,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:08:13,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1318693890, now seen corresponding path program 13 times [2024-06-27 19:08:13,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:08:13,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134824432] [2024-06-27 19:08:13,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:08:13,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:08:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:08:15,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:08:15,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:08:15,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134824432] [2024-06-27 19:08:15,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134824432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:08:15,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:08:15,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:08:15,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649157829] [2024-06-27 19:08:15,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:08:15,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:08:15,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:08:15,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:08:15,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:08:15,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:08:15,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 536 transitions, 10180 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:08:15,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:08:15,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:08:15,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:08:18,917 INFO L124 PetriNetUnfolderBase]: 8161/12693 cut-off events. [2024-06-27 19:08:18,917 INFO L125 PetriNetUnfolderBase]: For 622231/622231 co-relation queries the response was YES. [2024-06-27 19:08:19,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109823 conditions, 12693 events. 8161/12693 cut-off events. For 622231/622231 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 86168 event pairs, 1302 based on Foata normal form. 12/12631 useless extension candidates. Maximal degree in co-relation 109650. Up to 10753 conditions per place. [2024-06-27 19:08:19,090 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 381 selfloop transitions, 221 changer transitions 0/612 dead transitions. [2024-06-27 19:08:19,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 612 transitions, 12090 flow [2024-06-27 19:08:19,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:08:19,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:08:19,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 283 transitions. [2024-06-27 19:08:19,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5473887814313346 [2024-06-27 19:08:19,092 INFO L175 Difference]: Start difference. First operand has 362 places, 536 transitions, 10180 flow. Second operand 11 states and 283 transitions. [2024-06-27 19:08:19,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 612 transitions, 12090 flow [2024-06-27 19:08:21,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 612 transitions, 11554 flow, removed 89 selfloop flow, removed 6 redundant places. [2024-06-27 19:08:21,242 INFO L231 Difference]: Finished difference. Result has 367 places, 538 transitions, 10221 flow [2024-06-27 19:08:21,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9668, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=220, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10221, PETRI_PLACES=367, PETRI_TRANSITIONS=538} [2024-06-27 19:08:21,242 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 314 predicate places. [2024-06-27 19:08:21,242 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 538 transitions, 10221 flow [2024-06-27 19:08:21,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:08:21,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:08:21,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:08:21,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 19:08:21,243 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:08:21,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:08:21,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1837947484, now seen corresponding path program 14 times [2024-06-27 19:08:21,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:08:21,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687608993] [2024-06-27 19:08:21,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:08:21,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:08:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:08:22,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:08:22,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:08:22,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687608993] [2024-06-27 19:08:22,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687608993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:08:22,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:08:22,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:08:22,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742722269] [2024-06-27 19:08:22,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:08:22,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:08:22,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:08:22,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:08:22,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:08:22,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:08:22,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 538 transitions, 10221 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:08:22,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:08:22,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:08:22,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:08:25,786 INFO L124 PetriNetUnfolderBase]: 8161/12685 cut-off events. [2024-06-27 19:08:25,786 INFO L125 PetriNetUnfolderBase]: For 583416/583416 co-relation queries the response was YES. [2024-06-27 19:08:25,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108135 conditions, 12685 events. 8161/12685 cut-off events. For 583416/583416 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 86064 event pairs, 1330 based on Foata normal form. 16/12622 useless extension candidates. Maximal degree in co-relation 107960. Up to 11138 conditions per place. [2024-06-27 19:08:25,979 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 381 selfloop transitions, 209 changer transitions 0/600 dead transitions. [2024-06-27 19:08:25,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 600 transitions, 11742 flow [2024-06-27 19:08:25,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:08:25,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:08:25,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 252 transitions. [2024-06-27 19:08:25,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361702127659574 [2024-06-27 19:08:25,980 INFO L175 Difference]: Start difference. First operand has 367 places, 538 transitions, 10221 flow. Second operand 10 states and 252 transitions. [2024-06-27 19:08:25,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 600 transitions, 11742 flow [2024-06-27 19:08:28,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 600 transitions, 11384 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-27 19:08:28,412 INFO L231 Difference]: Finished difference. Result has 370 places, 539 transitions, 10345 flow [2024-06-27 19:08:28,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9887, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10345, PETRI_PLACES=370, PETRI_TRANSITIONS=539} [2024-06-27 19:08:28,413 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 317 predicate places. [2024-06-27 19:08:28,413 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 539 transitions, 10345 flow [2024-06-27 19:08:28,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:08:28,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:08:28,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:08:28,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 19:08:28,414 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:08:28,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:08:28,415 INFO L85 PathProgramCache]: Analyzing trace with hash 641562440, now seen corresponding path program 1 times [2024-06-27 19:08:28,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:08:28,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383021965] [2024-06-27 19:08:28,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:08:28,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:08:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:08:29,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:08:29,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:08:29,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383021965] [2024-06-27 19:08:29,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383021965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:08:29,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:08:29,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:08:29,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851447255] [2024-06-27 19:08:29,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:08:29,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:08:29,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:08:29,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:08:29,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:08:29,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 19:08:29,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 539 transitions, 10345 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:08:29,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:08:29,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 19:08:29,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:08:32,754 INFO L124 PetriNetUnfolderBase]: 7976/13590 cut-off events. [2024-06-27 19:08:32,754 INFO L125 PetriNetUnfolderBase]: For 589313/589362 co-relation queries the response was YES. [2024-06-27 19:08:32,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108357 conditions, 13590 events. 7976/13590 cut-off events. For 589313/589362 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 103782 event pairs, 2700 based on Foata normal form. 23/13219 useless extension candidates. Maximal degree in co-relation 108180. Up to 11352 conditions per place. [2024-06-27 19:08:32,949 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 513 selfloop transitions, 46 changer transitions 0/593 dead transitions. [2024-06-27 19:08:32,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 593 transitions, 11877 flow [2024-06-27 19:08:32,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:08:32,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:08:32,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-27 19:08:32,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390070921985816 [2024-06-27 19:08:32,950 INFO L175 Difference]: Start difference. First operand has 370 places, 539 transitions, 10345 flow. Second operand 9 states and 228 transitions. [2024-06-27 19:08:32,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 593 transitions, 11877 flow [2024-06-27 19:08:35,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 593 transitions, 11559 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 19:08:35,127 INFO L231 Difference]: Finished difference. Result has 372 places, 545 transitions, 10240 flow [2024-06-27 19:08:35,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10027, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10240, PETRI_PLACES=372, PETRI_TRANSITIONS=545} [2024-06-27 19:08:35,127 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 319 predicate places. [2024-06-27 19:08:35,127 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 545 transitions, 10240 flow [2024-06-27 19:08:35,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:08:35,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:08:35,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:08:35,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 19:08:35,129 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:08:35,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:08:35,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1787621924, now seen corresponding path program 1 times [2024-06-27 19:08:35,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:08:35,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593056342] [2024-06-27 19:08:35,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:08:35,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:08:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:08:35,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:08:35,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:08:35,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593056342] [2024-06-27 19:08:35,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593056342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:08:35,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:08:35,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:08:35,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048466736] [2024-06-27 19:08:35,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:08:35,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:08:35,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:08:35,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:08:35,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:08:35,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:08:35,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 545 transitions, 10240 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:08:35,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:08:35,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:08:35,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:08:39,636 INFO L124 PetriNetUnfolderBase]: 8364/13887 cut-off events. [2024-06-27 19:08:39,636 INFO L125 PetriNetUnfolderBase]: For 597646/597646 co-relation queries the response was YES. [2024-06-27 19:08:39,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111597 conditions, 13887 events. 8364/13887 cut-off events. For 597646/597646 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 102900 event pairs, 2422 based on Foata normal form. 4/13579 useless extension candidates. Maximal degree in co-relation 111419. Up to 12151 conditions per place. [2024-06-27 19:08:39,823 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 539 selfloop transitions, 60 changer transitions 0/609 dead transitions. [2024-06-27 19:08:39,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 609 transitions, 11988 flow [2024-06-27 19:08:39,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:08:39,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:08:39,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-27 19:08:39,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508274231678487 [2024-06-27 19:08:39,825 INFO L175 Difference]: Start difference. First operand has 372 places, 545 transitions, 10240 flow. Second operand 9 states and 215 transitions. [2024-06-27 19:08:39,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 609 transitions, 11988 flow [2024-06-27 19:08:41,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 609 transitions, 11776 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-27 19:08:41,753 INFO L231 Difference]: Finished difference. Result has 377 places, 576 transitions, 10641 flow [2024-06-27 19:08:41,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10028, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10641, PETRI_PLACES=377, PETRI_TRANSITIONS=576} [2024-06-27 19:08:41,754 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 324 predicate places. [2024-06-27 19:08:41,754 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 576 transitions, 10641 flow [2024-06-27 19:08:41,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:08:41,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:08:41,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:08:41,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 19:08:41,754 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:08:41,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:08:41,754 INFO L85 PathProgramCache]: Analyzing trace with hash 2047858178, now seen corresponding path program 2 times [2024-06-27 19:08:41,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:08:41,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262678235] [2024-06-27 19:08:41,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:08:41,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:08:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:08:42,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:08:42,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:08:42,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262678235] [2024-06-27 19:08:42,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262678235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:08:42,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:08:42,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:08:42,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19123819] [2024-06-27 19:08:42,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:08:42,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:08:42,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:08:42,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:08:42,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:08:42,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 19:08:42,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 576 transitions, 10641 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:08:42,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:08:42,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 19:08:42,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:08:46,628 INFO L124 PetriNetUnfolderBase]: 8104/13740 cut-off events. [2024-06-27 19:08:46,629 INFO L125 PetriNetUnfolderBase]: For 625643/625694 co-relation queries the response was YES. [2024-06-27 19:08:46,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112466 conditions, 13740 events. 8104/13740 cut-off events. For 625643/625694 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 104607 event pairs, 2718 based on Foata normal form. 32/13392 useless extension candidates. Maximal degree in co-relation 112284. Up to 11680 conditions per place. [2024-06-27 19:08:46,825 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 547 selfloop transitions, 32 changer transitions 0/614 dead transitions. [2024-06-27 19:08:46,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 614 transitions, 12007 flow [2024-06-27 19:08:46,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:08:46,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:08:46,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 19:08:46,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-27 19:08:46,827 INFO L175 Difference]: Start difference. First operand has 377 places, 576 transitions, 10641 flow. Second operand 8 states and 196 transitions. [2024-06-27 19:08:46,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 614 transitions, 12007 flow [2024-06-27 19:08:48,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 614 transitions, 11765 flow, removed 114 selfloop flow, removed 2 redundant places. [2024-06-27 19:08:48,878 INFO L231 Difference]: Finished difference. Result has 383 places, 579 transitions, 10519 flow [2024-06-27 19:08:48,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10399, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10519, PETRI_PLACES=383, PETRI_TRANSITIONS=579} [2024-06-27 19:08:48,879 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 330 predicate places. [2024-06-27 19:08:48,879 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 579 transitions, 10519 flow [2024-06-27 19:08:48,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:08:48,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:08:48,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:08:48,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 19:08:48,879 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:08:48,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:08:48,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1234404436, now seen corresponding path program 2 times [2024-06-27 19:08:48,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:08:48,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092577076] [2024-06-27 19:08:48,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:08:48,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:08:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:08:49,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:08:49,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:08:49,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092577076] [2024-06-27 19:08:49,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092577076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:08:49,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:08:49,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:08:49,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364397708] [2024-06-27 19:08:49,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:08:49,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:08:49,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:08:49,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:08:49,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:08:49,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:08:49,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 579 transitions, 10519 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:08:49,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:08:49,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:08:49,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand