./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix022_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/mutex-meet-nonrel/mix022_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/mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix022_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 [2024-06-28 01:28:23,927 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:28:23,996 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:28:24,001 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:28:24,002 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:28:24,027 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:28:24,028 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:28:24,028 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:28:24,028 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:28:24,033 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:28:24,033 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:28:24,033 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:28:24,034 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:28:24,035 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:28:24,035 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:28:24,036 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:28:24,036 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:28:24,036 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:28:24,036 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:28:24,036 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:28:24,037 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:28:24,037 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:28:24,037 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:28:24,037 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:28:24,038 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:28:24,038 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:28:24,038 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:28:24,038 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:28:24,039 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:28:24,039 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:28:24,040 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:28:24,040 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:28:24,040 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:28:24,040 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:28:24,040 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:28:24,040 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:28:24,041 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:28:24,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:28:24,041 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:28:24,041 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:28:24,041 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:28:24,042 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:28:24,042 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:28:24,042 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:28:24,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:28:24,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:28:24,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:28:24,250 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:28:24,250 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:28:24,251 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-28 01:28:24,369 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:28:24,370 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:28:24,370 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 01:28:25,418 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:28:25,622 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:28:25,622 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 01:28:25,638 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07b178cd8/ac631eadfffa422889680f244a210648/FLAGdbdde1a27 [2024-06-28 01:28:25,648 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07b178cd8/ac631eadfffa422889680f244a210648 [2024-06-28 01:28:25,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:28:25,650 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:28:25,650 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:28:25,651 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:28:25,656 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:28:25,656 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:28:24" (1/2) ... [2024-06-28 01:28:25,657 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ef9377c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:28:25, skipping insertion in model container [2024-06-28 01:28:25,658 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:28:24" (1/2) ... [2024-06-28 01:28:25,659 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2e318575 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:28:25, skipping insertion in model container [2024-06-28 01:28:25,659 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:28:25" (2/2) ... [2024-06-28 01:28:25,660 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ef9377c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:28:25, skipping insertion in model container [2024-06-28 01:28:25,660 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:28:25" (2/2) ... [2024-06-28 01:28:25,661 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:28:25,720 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:28:25,721 INFO L97 edCorrectnessWitness]: Location invariant before [L813-L813] ((((((((((((((! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 01:28:25,721 INFO L97 edCorrectnessWitness]: Location invariant before [L814-L814] ((((((((((((((! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 01:28:25,722 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:28:25,722 INFO L106 edCorrectnessWitness]: ghost_update [L811-L811] multithreaded = 1; [2024-06-28 01:28:25,757 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:28:25,930 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/mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[995,1008] [2024-06-28 01:28:26,073 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:28:26,087 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:28:26,114 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/mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[995,1008] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:28:26,173 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:28:26,204 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:28:26,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:28:26 WrapperNode [2024-06-28 01:28:26,205 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:28:26,206 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:28:26,206 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:28:26,206 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:28:26,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:28:26" (1/1) ... [2024-06-28 01:28:26,225 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:28:26" (1/1) ... [2024-06-28 01:28:26,246 INFO L138 Inliner]: procedures = 174, calls = 35, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 109 [2024-06-28 01:28:26,247 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:28:26,247 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:28:26,247 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:28:26,247 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:28:26,258 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:28:26" (1/1) ... [2024-06-28 01:28:26,259 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:28:26" (1/1) ... [2024-06-28 01:28:26,261 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:28:26" (1/1) ... [2024-06-28 01:28:26,289 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 01:28:26,290 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:28:26" (1/1) ... [2024-06-28 01:28:26,290 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:28:26" (1/1) ... [2024-06-28 01:28:26,296 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:28:26" (1/1) ... [2024-06-28 01:28:26,298 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:28:26" (1/1) ... [2024-06-28 01:28:26,299 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:28:26" (1/1) ... [2024-06-28 01:28:26,300 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:28:26" (1/1) ... [2024-06-28 01:28:26,302 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:28:26,303 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:28:26,303 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:28:26,303 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:28:26,304 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:28:26" (1/1) ... [2024-06-28 01:28:26,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:28:26,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:28:26,331 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:28:26,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:28:26,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:28:26,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:28:26,364 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:28:26,365 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:28:26,365 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:28:26,365 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:28:26,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:28:26,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:28:26,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:28:26,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:28:26,367 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:28:26,466 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:28:26,467 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:28:26,814 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:28:26,814 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:28:26,955 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:28:26,956 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:28:26,956 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:28:26 BoogieIcfgContainer [2024-06-28 01:28:26,956 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:28:26,959 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:28:26,959 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:28:26,962 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:28:26,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:28:24" (1/4) ... [2024-06-28 01:28:26,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19cf29ad and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:28:26, skipping insertion in model container [2024-06-28 01:28:26,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:28:25" (2/4) ... [2024-06-28 01:28:26,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19cf29ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:28:26, skipping insertion in model container [2024-06-28 01:28:26,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:28:26" (3/4) ... [2024-06-28 01:28:26,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19cf29ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:28:26, skipping insertion in model container [2024-06-28 01:28:26,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:28:26" (4/4) ... [2024-06-28 01:28:26,970 INFO L112 eAbstractionObserver]: Analyzing ICFG mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 01:28:26,984 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:28:26,985 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:28:26,985 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:28:27,020 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:28:27,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 36 transitions, 80 flow [2024-06-28 01:28:27,085 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2024-06-28 01:28:27,085 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:28:27,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 34 events. 1/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-06-28 01:28:27,089 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 36 transitions, 80 flow [2024-06-28 01:28:27,092 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 34 transitions, 74 flow [2024-06-28 01:28:27,102 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:28:27,108 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;@159c3ea1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:28:27,108 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 01:28:27,113 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:28:27,113 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:28:27,113 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:28:27,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:27,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:28:27,115 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:27,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:27,121 INFO L85 PathProgramCache]: Analyzing trace with hash 308678707, now seen corresponding path program 1 times [2024-06-28 01:28:27,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:27,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425015066] [2024-06-28 01:28:27,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:27,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:27,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:27,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:27,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425015066] [2024-06-28 01:28:27,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425015066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:27,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:27,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:28:27,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426480503] [2024-06-28 01:28:27,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:27,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:28:27,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:27,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:28:27,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:28:27,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-06-28 01:28:27,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:27,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:27,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-06-28 01:28:27,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:28,135 INFO L124 PetriNetUnfolderBase]: 475/841 cut-off events. [2024-06-28 01:28:28,136 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-06-28 01:28:28,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1657 conditions, 841 events. 475/841 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4213 event pairs, 182 based on Foata normal form. 43/824 useless extension candidates. Maximal degree in co-relation 1646. Up to 787 conditions per place. [2024-06-28 01:28:28,145 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 30 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-06-28 01:28:28,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 165 flow [2024-06-28 01:28:28,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:28:28,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:28:28,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2024-06-28 01:28:28,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6851851851851852 [2024-06-28 01:28:28,157 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 74 flow. Second operand 3 states and 74 transitions. [2024-06-28 01:28:28,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 165 flow [2024-06-28 01:28:28,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:28:28,162 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 98 flow [2024-06-28 01:28:28,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2024-06-28 01:28:28,166 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2024-06-28 01:28:28,166 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 98 flow [2024-06-28 01:28:28,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:28,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:28,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:28:28,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:28:28,167 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:28,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:28,168 INFO L85 PathProgramCache]: Analyzing trace with hash 308678893, now seen corresponding path program 1 times [2024-06-28 01:28:28,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:28,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648198910] [2024-06-28 01:28:28,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:28,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:28,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:28,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:28,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648198910] [2024-06-28 01:28:28,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648198910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:28,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:28,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:28:28,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952609607] [2024-06-28 01:28:28,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:28,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:28:28,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:28,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:28:28,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:28:28,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 36 [2024-06-28 01:28:28,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:28,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:28,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 36 [2024-06-28 01:28:28,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:28,344 INFO L124 PetriNetUnfolderBase]: 152/358 cut-off events. [2024-06-28 01:28:28,345 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-06-28 01:28:28,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 702 conditions, 358 events. 152/358 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1853 event pairs, 52 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 690. Up to 227 conditions per place. [2024-06-28 01:28:28,347 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 23 selfloop transitions, 3 changer transitions 2/45 dead transitions. [2024-06-28 01:28:28,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 169 flow [2024-06-28 01:28:28,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:28:28,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:28:28,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-06-28 01:28:28,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7592592592592593 [2024-06-28 01:28:28,350 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 98 flow. Second operand 3 states and 82 transitions. [2024-06-28 01:28:28,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 169 flow [2024-06-28 01:28:28,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:28:28,353 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 90 flow [2024-06-28 01:28:28,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2024-06-28 01:28:28,355 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2024-06-28 01:28:28,355 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 90 flow [2024-06-28 01:28:28,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:28,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:28,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:28,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:28:28,357 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:28,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:28,360 INFO L85 PathProgramCache]: Analyzing trace with hash 287676551, now seen corresponding path program 1 times [2024-06-28 01:28:28,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:28,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121886877] [2024-06-28 01:28:28,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:28,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:28,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:28,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:28,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121886877] [2024-06-28 01:28:28,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121886877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:28,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:28,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:28:28,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972574081] [2024-06-28 01:28:28,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:28,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:28:28,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:28,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:28:28,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:28:28,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-06-28 01:28:28,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:28,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:28,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-06-28 01:28:28,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:28,935 INFO L124 PetriNetUnfolderBase]: 342/705 cut-off events. [2024-06-28 01:28:28,936 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-06-28 01:28:28,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1456 conditions, 705 events. 342/705 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3706 event pairs, 160 based on Foata normal form. 2/676 useless extension candidates. Maximal degree in co-relation 1443. Up to 562 conditions per place. [2024-06-28 01:28:28,939 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 34 selfloop transitions, 6 changer transitions 0/50 dead transitions. [2024-06-28 01:28:28,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 50 transitions, 216 flow [2024-06-28 01:28:28,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:28:28,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:28:28,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-06-28 01:28:28,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-06-28 01:28:28,941 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 90 flow. Second operand 4 states and 88 transitions. [2024-06-28 01:28:28,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 50 transitions, 216 flow [2024-06-28 01:28:28,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 50 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:28:28,943 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 133 flow [2024-06-28 01:28:28,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-06-28 01:28:28,944 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2024-06-28 01:28:28,944 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 133 flow [2024-06-28 01:28:28,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:28,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:28,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:28,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:28:28,945 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:28,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:28,945 INFO L85 PathProgramCache]: Analyzing trace with hash 328039780, now seen corresponding path program 1 times [2024-06-28 01:28:28,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:28,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319336630] [2024-06-28 01:28:28,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:28,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:29,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:29,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:29,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319336630] [2024-06-28 01:28:29,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319336630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:29,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:29,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:28:29,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585410132] [2024-06-28 01:28:29,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:29,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:28:29,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:29,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:28:29,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:28:29,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2024-06-28 01:28:29,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 133 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:29,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:29,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2024-06-28 01:28:29,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:29,554 INFO L124 PetriNetUnfolderBase]: 418/828 cut-off events. [2024-06-28 01:28:29,554 INFO L125 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2024-06-28 01:28:29,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1877 conditions, 828 events. 418/828 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4413 event pairs, 148 based on Foata normal form. 3/794 useless extension candidates. Maximal degree in co-relation 1862. Up to 629 conditions per place. [2024-06-28 01:28:29,558 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 46 selfloop transitions, 13 changer transitions 0/68 dead transitions. [2024-06-28 01:28:29,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 68 transitions, 339 flow [2024-06-28 01:28:29,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:28:29,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:28:29,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-06-28 01:28:29,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-06-28 01:28:29,562 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 133 flow. Second operand 5 states and 111 transitions. [2024-06-28 01:28:29,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 68 transitions, 339 flow [2024-06-28 01:28:29,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 68 transitions, 332 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-28 01:28:29,566 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 214 flow [2024-06-28 01:28:29,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=214, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2024-06-28 01:28:29,568 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2024-06-28 01:28:29,568 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 214 flow [2024-06-28 01:28:29,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:29,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:29,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:29,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:28:29,569 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:29,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:29,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1440771760, now seen corresponding path program 1 times [2024-06-28 01:28:29,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:29,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333754484] [2024-06-28 01:28:29,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:29,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:29,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:30,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:30,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:30,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333754484] [2024-06-28 01:28:30,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333754484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:30,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:30,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:28:30,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080433759] [2024-06-28 01:28:30,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:30,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:28:30,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:30,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:28:30,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:28:30,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2024-06-28 01:28:30,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:30,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:30,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2024-06-28 01:28:30,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:30,394 INFO L124 PetriNetUnfolderBase]: 428/766 cut-off events. [2024-06-28 01:28:30,394 INFO L125 PetriNetUnfolderBase]: For 804/804 co-relation queries the response was YES. [2024-06-28 01:28:30,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2191 conditions, 766 events. 428/766 cut-off events. For 804/804 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3786 event pairs, 79 based on Foata normal form. 3/758 useless extension candidates. Maximal degree in co-relation 2172. Up to 593 conditions per place. [2024-06-28 01:28:30,399 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 56 selfloop transitions, 23 changer transitions 0/88 dead transitions. [2024-06-28 01:28:30,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 88 transitions, 524 flow [2024-06-28 01:28:30,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:28:30,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:28:30,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-28 01:28:30,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6157407407407407 [2024-06-28 01:28:30,401 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 214 flow. Second operand 6 states and 133 transitions. [2024-06-28 01:28:30,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 88 transitions, 524 flow [2024-06-28 01:28:30,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 88 transitions, 520 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 01:28:30,407 INFO L231 Difference]: Finished difference. Result has 58 places, 58 transitions, 362 flow [2024-06-28 01:28:30,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=362, PETRI_PLACES=58, PETRI_TRANSITIONS=58} [2024-06-28 01:28:30,411 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 18 predicate places. [2024-06-28 01:28:30,412 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 58 transitions, 362 flow [2024-06-28 01:28:30,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:30,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:30,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:30,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:28:30,413 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:30,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:30,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1714252953, now seen corresponding path program 1 times [2024-06-28 01:28:30,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:30,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88614023] [2024-06-28 01:28:30,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:30,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:31,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:31,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:31,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88614023] [2024-06-28 01:28:31,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88614023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:31,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:31,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:28:31,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186978657] [2024-06-28 01:28:31,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:31,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:28:31,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:31,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:28:31,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:28:31,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2024-06-28 01:28:31,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 58 transitions, 362 flow. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:31,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:31,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2024-06-28 01:28:31,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:31,297 INFO L124 PetriNetUnfolderBase]: 438/784 cut-off events. [2024-06-28 01:28:31,297 INFO L125 PetriNetUnfolderBase]: For 1536/1536 co-relation queries the response was YES. [2024-06-28 01:28:31,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 784 events. 438/784 cut-off events. For 1536/1536 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3926 event pairs, 37 based on Foata normal form. 6/779 useless extension candidates. Maximal degree in co-relation 2652. Up to 561 conditions per place. [2024-06-28 01:28:31,302 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 59 selfloop transitions, 25 changer transitions 0/93 dead transitions. [2024-06-28 01:28:31,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 93 transitions, 646 flow [2024-06-28 01:28:31,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:28:31,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:28:31,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-06-28 01:28:31,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5912698412698413 [2024-06-28 01:28:31,304 INFO L175 Difference]: Start difference. First operand has 58 places, 58 transitions, 362 flow. Second operand 7 states and 149 transitions. [2024-06-28 01:28:31,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 93 transitions, 646 flow [2024-06-28 01:28:31,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 93 transitions, 626 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-06-28 01:28:31,309 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 409 flow [2024-06-28 01:28:31,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=409, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-06-28 01:28:31,311 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 24 predicate places. [2024-06-28 01:28:31,311 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 409 flow [2024-06-28 01:28:31,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:31,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:31,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:31,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:28:31,312 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:31,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:31,312 INFO L85 PathProgramCache]: Analyzing trace with hash 896135998, now seen corresponding path program 1 times [2024-06-28 01:28:31,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:31,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944208270] [2024-06-28 01:28:31,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:31,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:31,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:31,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:31,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944208270] [2024-06-28 01:28:31,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944208270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:31,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:31,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:28:31,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170376186] [2024-06-28 01:28:31,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:31,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:28:31,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:31,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:28:31,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:28:31,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:28:31,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 409 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:31,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:31,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:28:31,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:31,984 INFO L124 PetriNetUnfolderBase]: 514/1025 cut-off events. [2024-06-28 01:28:31,984 INFO L125 PetriNetUnfolderBase]: For 2010/2010 co-relation queries the response was YES. [2024-06-28 01:28:31,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3275 conditions, 1025 events. 514/1025 cut-off events. For 2010/2010 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5584 event pairs, 156 based on Foata normal form. 1/984 useless extension candidates. Maximal degree in co-relation 3246. Up to 838 conditions per place. [2024-06-28 01:28:31,991 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 53 selfloop transitions, 10 changer transitions 0/70 dead transitions. [2024-06-28 01:28:31,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 70 transitions, 559 flow [2024-06-28 01:28:31,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:28:31,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:28:31,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2024-06-28 01:28:31,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-06-28 01:28:31,993 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 409 flow. Second operand 5 states and 86 transitions. [2024-06-28 01:28:31,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 70 transitions, 559 flow [2024-06-28 01:28:31,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 70 transitions, 500 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:28:31,998 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 378 flow [2024-06-28 01:28:31,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=378, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-06-28 01:28:31,999 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 24 predicate places. [2024-06-28 01:28:32,000 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 378 flow [2024-06-28 01:28:32,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:32,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:32,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:32,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:28:32,000 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:32,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:32,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1997468519, now seen corresponding path program 1 times [2024-06-28 01:28:32,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:32,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445417214] [2024-06-28 01:28:32,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:32,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:32,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:32,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:32,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445417214] [2024-06-28 01:28:32,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445417214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:32,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:32,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:28:32,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453999102] [2024-06-28 01:28:32,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:32,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:28:32,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:32,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:28:32,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:28:32,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:28:32,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 378 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:32,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:32,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:28:32,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:32,761 INFO L124 PetriNetUnfolderBase]: 508/976 cut-off events. [2024-06-28 01:28:32,761 INFO L125 PetriNetUnfolderBase]: For 1854/1854 co-relation queries the response was YES. [2024-06-28 01:28:32,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3048 conditions, 976 events. 508/976 cut-off events. For 1854/1854 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5177 event pairs, 151 based on Foata normal form. 3/947 useless extension candidates. Maximal degree in co-relation 3017. Up to 796 conditions per place. [2024-06-28 01:28:32,767 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 60 selfloop transitions, 12 changer transitions 0/79 dead transitions. [2024-06-28 01:28:32,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 79 transitions, 574 flow [2024-06-28 01:28:32,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:28:32,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:28:32,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-28 01:28:32,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-28 01:28:32,769 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 378 flow. Second operand 6 states and 104 transitions. [2024-06-28 01:28:32,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 79 transitions, 574 flow [2024-06-28 01:28:32,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 79 transitions, 549 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 01:28:32,774 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 397 flow [2024-06-28 01:28:32,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=397, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2024-06-28 01:28:32,776 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 26 predicate places. [2024-06-28 01:28:32,776 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 397 flow [2024-06-28 01:28:32,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:32,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:32,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:32,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:28:32,777 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:32,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:32,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1785337626, now seen corresponding path program 1 times [2024-06-28 01:28:32,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:32,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80575016] [2024-06-28 01:28:32,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:32,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:33,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:33,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:33,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80575016] [2024-06-28 01:28:33,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80575016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:33,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:33,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:28:33,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522341071] [2024-06-28 01:28:33,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:33,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:28:33,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:33,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:28:33,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:28:33,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:28:33,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 397 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:33,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:33,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:28:33,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:33,480 INFO L124 PetriNetUnfolderBase]: 517/984 cut-off events. [2024-06-28 01:28:33,481 INFO L125 PetriNetUnfolderBase]: For 2032/2032 co-relation queries the response was YES. [2024-06-28 01:28:33,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3240 conditions, 984 events. 517/984 cut-off events. For 2032/2032 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5181 event pairs, 116 based on Foata normal form. 2/950 useless extension candidates. Maximal degree in co-relation 3209. Up to 767 conditions per place. [2024-06-28 01:28:33,486 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 61 selfloop transitions, 15 changer transitions 0/83 dead transitions. [2024-06-28 01:28:33,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 83 transitions, 635 flow [2024-06-28 01:28:33,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:28:33,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:28:33,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-28 01:28:33,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5046296296296297 [2024-06-28 01:28:33,488 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 397 flow. Second operand 6 states and 109 transitions. [2024-06-28 01:28:33,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 83 transitions, 635 flow [2024-06-28 01:28:33,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 83 transitions, 611 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 01:28:33,494 INFO L231 Difference]: Finished difference. Result has 68 places, 63 transitions, 432 flow [2024-06-28 01:28:33,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=432, PETRI_PLACES=68, PETRI_TRANSITIONS=63} [2024-06-28 01:28:33,495 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 28 predicate places. [2024-06-28 01:28:33,495 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 63 transitions, 432 flow [2024-06-28 01:28:33,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:33,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:33,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:33,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:28:33,497 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:33,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:33,498 INFO L85 PathProgramCache]: Analyzing trace with hash -2101708420, now seen corresponding path program 2 times [2024-06-28 01:28:33,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:33,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678054844] [2024-06-28 01:28:33,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:33,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:33,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:33,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:33,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:33,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678054844] [2024-06-28 01:28:33,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678054844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:33,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:33,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:28:33,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994264476] [2024-06-28 01:28:33,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:33,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:28:33,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:33,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:28:33,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:28:33,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:28:33,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 63 transitions, 432 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:33,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:33,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:28:33,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:34,197 INFO L124 PetriNetUnfolderBase]: 512/1001 cut-off events. [2024-06-28 01:28:34,197 INFO L125 PetriNetUnfolderBase]: For 2228/2228 co-relation queries the response was YES. [2024-06-28 01:28:34,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3276 conditions, 1001 events. 512/1001 cut-off events. For 2228/2228 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5377 event pairs, 155 based on Foata normal form. 1/965 useless extension candidates. Maximal degree in co-relation 3244. Up to 830 conditions per place. [2024-06-28 01:28:34,203 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 60 selfloop transitions, 10 changer transitions 0/77 dead transitions. [2024-06-28 01:28:34,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 77 transitions, 606 flow [2024-06-28 01:28:34,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:28:34,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:28:34,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-28 01:28:34,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-28 01:28:34,205 INFO L175 Difference]: Start difference. First operand has 68 places, 63 transitions, 432 flow. Second operand 6 states and 100 transitions. [2024-06-28 01:28:34,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 77 transitions, 606 flow [2024-06-28 01:28:34,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 77 transitions, 587 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 01:28:34,210 INFO L231 Difference]: Finished difference. Result has 71 places, 63 transitions, 438 flow [2024-06-28 01:28:34,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=438, PETRI_PLACES=71, PETRI_TRANSITIONS=63} [2024-06-28 01:28:34,211 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 31 predicate places. [2024-06-28 01:28:34,211 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 438 flow [2024-06-28 01:28:34,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:34,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:34,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:34,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:28:34,212 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:34,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:34,212 INFO L85 PathProgramCache]: Analyzing trace with hash 869655237, now seen corresponding path program 1 times [2024-06-28 01:28:34,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:34,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591674870] [2024-06-28 01:28:34,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:34,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:34,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:34,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:34,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:34,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591674870] [2024-06-28 01:28:34,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591674870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:34,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:34,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:34,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793732742] [2024-06-28 01:28:34,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:34,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:34,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:34,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:34,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:34,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:28:34,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 63 transitions, 438 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:34,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:34,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:28:34,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:35,011 INFO L124 PetriNetUnfolderBase]: 636/1168 cut-off events. [2024-06-28 01:28:35,011 INFO L125 PetriNetUnfolderBase]: For 2961/2961 co-relation queries the response was YES. [2024-06-28 01:28:35,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3838 conditions, 1168 events. 636/1168 cut-off events. For 2961/2961 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6233 event pairs, 145 based on Foata normal form. 6/1140 useless extension candidates. Maximal degree in co-relation 3805. Up to 759 conditions per place. [2024-06-28 01:28:35,018 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 74 selfloop transitions, 20 changer transitions 0/101 dead transitions. [2024-06-28 01:28:35,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 101 transitions, 760 flow [2024-06-28 01:28:35,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:28:35,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:28:35,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-28 01:28:35,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-28 01:28:35,020 INFO L175 Difference]: Start difference. First operand has 71 places, 63 transitions, 438 flow. Second operand 7 states and 132 transitions. [2024-06-28 01:28:35,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 101 transitions, 760 flow [2024-06-28 01:28:35,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 101 transitions, 718 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 01:28:35,025 INFO L231 Difference]: Finished difference. Result has 73 places, 71 transitions, 498 flow [2024-06-28 01:28:35,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=498, PETRI_PLACES=73, PETRI_TRANSITIONS=71} [2024-06-28 01:28:35,026 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 33 predicate places. [2024-06-28 01:28:35,026 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 71 transitions, 498 flow [2024-06-28 01:28:35,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:35,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:35,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:35,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:28:35,027 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:35,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:35,027 INFO L85 PathProgramCache]: Analyzing trace with hash -728184573, now seen corresponding path program 2 times [2024-06-28 01:28:35,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:35,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732048798] [2024-06-28 01:28:35,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:35,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:35,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:35,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:35,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732048798] [2024-06-28 01:28:35,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732048798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:35,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:35,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:35,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576033740] [2024-06-28 01:28:35,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:35,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:35,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:35,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:35,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:35,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:28:35,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 71 transitions, 498 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:35,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:35,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:28:35,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:35,881 INFO L124 PetriNetUnfolderBase]: 669/1307 cut-off events. [2024-06-28 01:28:35,881 INFO L125 PetriNetUnfolderBase]: For 3967/3967 co-relation queries the response was YES. [2024-06-28 01:28:35,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4535 conditions, 1307 events. 669/1307 cut-off events. For 3967/3967 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7451 event pairs, 324 based on Foata normal form. 3/1260 useless extension candidates. Maximal degree in co-relation 4501. Up to 1044 conditions per place. [2024-06-28 01:28:35,892 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 71 selfloop transitions, 15 changer transitions 0/93 dead transitions. [2024-06-28 01:28:35,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 93 transitions, 748 flow [2024-06-28 01:28:35,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:35,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:35,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 01:28:35,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409722222222222 [2024-06-28 01:28:35,894 INFO L175 Difference]: Start difference. First operand has 73 places, 71 transitions, 498 flow. Second operand 8 states and 127 transitions. [2024-06-28 01:28:35,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 93 transitions, 748 flow [2024-06-28 01:28:35,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 93 transitions, 733 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 01:28:35,902 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 559 flow [2024-06-28 01:28:35,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=559, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2024-06-28 01:28:35,903 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 40 predicate places. [2024-06-28 01:28:35,903 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 559 flow [2024-06-28 01:28:35,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:35,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:35,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:35,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:28:35,905 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:35,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:35,906 INFO L85 PathProgramCache]: Analyzing trace with hash 874296867, now seen corresponding path program 3 times [2024-06-28 01:28:35,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:35,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149280498] [2024-06-28 01:28:35,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:35,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:35,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:36,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:36,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:36,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149280498] [2024-06-28 01:28:36,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149280498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:36,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:36,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:36,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467577459] [2024-06-28 01:28:36,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:36,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:36,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:36,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:36,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:36,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:28:36,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 559 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:36,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:36,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:28:36,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:36,781 INFO L124 PetriNetUnfolderBase]: 663/1278 cut-off events. [2024-06-28 01:28:36,781 INFO L125 PetriNetUnfolderBase]: For 4260/4260 co-relation queries the response was YES. [2024-06-28 01:28:36,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4560 conditions, 1278 events. 663/1278 cut-off events. For 4260/4260 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7183 event pairs, 328 based on Foata normal form. 3/1236 useless extension candidates. Maximal degree in co-relation 4522. Up to 993 conditions per place. [2024-06-28 01:28:36,790 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 74 selfloop transitions, 18 changer transitions 0/99 dead transitions. [2024-06-28 01:28:36,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 99 transitions, 823 flow [2024-06-28 01:28:36,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:36,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:36,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 01:28:36,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:28:36,791 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 559 flow. Second operand 8 states and 132 transitions. [2024-06-28 01:28:36,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 99 transitions, 823 flow [2024-06-28 01:28:36,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 99 transitions, 779 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 01:28:36,799 INFO L231 Difference]: Finished difference. Result has 83 places, 77 transitions, 578 flow [2024-06-28 01:28:36,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=578, PETRI_PLACES=83, PETRI_TRANSITIONS=77} [2024-06-28 01:28:36,800 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 43 predicate places. [2024-06-28 01:28:36,800 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 77 transitions, 578 flow [2024-06-28 01:28:36,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:36,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:36,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:36,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:28:36,801 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:36,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:36,801 INFO L85 PathProgramCache]: Analyzing trace with hash -726488023, now seen corresponding path program 1 times [2024-06-28 01:28:36,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:36,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067260658] [2024-06-28 01:28:36,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:36,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:37,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:37,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:37,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067260658] [2024-06-28 01:28:37,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067260658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:37,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:37,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:37,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681490208] [2024-06-28 01:28:37,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:37,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:37,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:37,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:37,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:37,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:28:37,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 77 transitions, 578 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:37,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:37,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:28:37,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:37,866 INFO L124 PetriNetUnfolderBase]: 782/1489 cut-off events. [2024-06-28 01:28:37,866 INFO L125 PetriNetUnfolderBase]: For 5052/5052 co-relation queries the response was YES. [2024-06-28 01:28:37,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5607 conditions, 1489 events. 782/1489 cut-off events. For 5052/5052 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8639 event pairs, 160 based on Foata normal form. 1/1433 useless extension candidates. Maximal degree in co-relation 5569. Up to 1084 conditions per place. [2024-06-28 01:28:37,877 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 101 selfloop transitions, 33 changer transitions 0/141 dead transitions. [2024-06-28 01:28:37,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 141 transitions, 1238 flow [2024-06-28 01:28:37,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:28:37,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:28:37,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 01:28:37,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49382716049382713 [2024-06-28 01:28:37,878 INFO L175 Difference]: Start difference. First operand has 83 places, 77 transitions, 578 flow. Second operand 9 states and 160 transitions. [2024-06-28 01:28:37,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 141 transitions, 1238 flow [2024-06-28 01:28:37,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 141 transitions, 1187 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 01:28:37,888 INFO L231 Difference]: Finished difference. Result has 90 places, 102 transitions, 875 flow [2024-06-28 01:28:37,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=875, PETRI_PLACES=90, PETRI_TRANSITIONS=102} [2024-06-28 01:28:37,888 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 50 predicate places. [2024-06-28 01:28:37,889 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 102 transitions, 875 flow [2024-06-28 01:28:37,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:37,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:37,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:37,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:28:37,889 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:37,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:37,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1846567691, now seen corresponding path program 2 times [2024-06-28 01:28:37,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:37,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250801113] [2024-06-28 01:28:37,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:37,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:38,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:38,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:38,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250801113] [2024-06-28 01:28:38,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250801113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:38,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:38,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:38,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806023580] [2024-06-28 01:28:38,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:38,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:38,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:38,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:38,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:38,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:28:38,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 102 transitions, 875 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:38,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:38,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:28:38,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:38,913 INFO L124 PetriNetUnfolderBase]: 828/1557 cut-off events. [2024-06-28 01:28:38,914 INFO L125 PetriNetUnfolderBase]: For 6254/6254 co-relation queries the response was YES. [2024-06-28 01:28:38,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6390 conditions, 1557 events. 828/1557 cut-off events. For 6254/6254 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9111 event pairs, 147 based on Foata normal form. 1/1504 useless extension candidates. Maximal degree in co-relation 6347. Up to 1066 conditions per place. [2024-06-28 01:28:38,922 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 106 selfloop transitions, 49 changer transitions 0/162 dead transitions. [2024-06-28 01:28:38,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 162 transitions, 1540 flow [2024-06-28 01:28:38,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:28:38,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:28:38,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-28 01:28:38,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-06-28 01:28:38,925 INFO L175 Difference]: Start difference. First operand has 90 places, 102 transitions, 875 flow. Second operand 10 states and 183 transitions. [2024-06-28 01:28:38,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 162 transitions, 1540 flow [2024-06-28 01:28:38,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 162 transitions, 1515 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-28 01:28:38,937 INFO L231 Difference]: Finished difference. Result has 100 places, 115 transitions, 1088 flow [2024-06-28 01:28:38,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1088, PETRI_PLACES=100, PETRI_TRANSITIONS=115} [2024-06-28 01:28:38,938 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 60 predicate places. [2024-06-28 01:28:38,938 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 115 transitions, 1088 flow [2024-06-28 01:28:38,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:38,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:38,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:38,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:28:38,939 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:38,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:38,939 INFO L85 PathProgramCache]: Analyzing trace with hash -187097872, now seen corresponding path program 1 times [2024-06-28 01:28:38,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:38,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597798021] [2024-06-28 01:28:38,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:38,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:39,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:39,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:39,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597798021] [2024-06-28 01:28:39,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597798021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:39,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:39,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:39,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743208621] [2024-06-28 01:28:39,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:39,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:39,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:39,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:39,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:39,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:28:39,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 115 transitions, 1088 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:39,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:39,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:28:39,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:39,936 INFO L124 PetriNetUnfolderBase]: 1048/1992 cut-off events. [2024-06-28 01:28:39,936 INFO L125 PetriNetUnfolderBase]: For 9512/9512 co-relation queries the response was YES. [2024-06-28 01:28:39,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8352 conditions, 1992 events. 1048/1992 cut-off events. For 9512/9512 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12448 event pairs, 211 based on Foata normal form. 3/1920 useless extension candidates. Maximal degree in co-relation 8305. Up to 1237 conditions per place. [2024-06-28 01:28:39,947 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 131 selfloop transitions, 43 changer transitions 0/181 dead transitions. [2024-06-28 01:28:39,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 181 transitions, 1885 flow [2024-06-28 01:28:39,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:39,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:39,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-28 01:28:39,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5381944444444444 [2024-06-28 01:28:39,948 INFO L175 Difference]: Start difference. First operand has 100 places, 115 transitions, 1088 flow. Second operand 8 states and 155 transitions. [2024-06-28 01:28:39,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 181 transitions, 1885 flow [2024-06-28 01:28:39,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 181 transitions, 1822 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 01:28:39,964 INFO L231 Difference]: Finished difference. Result has 105 places, 139 transitions, 1399 flow [2024-06-28 01:28:39,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1033, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1399, PETRI_PLACES=105, PETRI_TRANSITIONS=139} [2024-06-28 01:28:39,964 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 65 predicate places. [2024-06-28 01:28:39,964 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 139 transitions, 1399 flow [2024-06-28 01:28:39,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:39,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:39,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:39,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:28:39,965 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:39,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:39,965 INFO L85 PathProgramCache]: Analyzing trace with hash -775125914, now seen corresponding path program 2 times [2024-06-28 01:28:39,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:39,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755636763] [2024-06-28 01:28:39,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:39,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:40,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:40,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:40,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755636763] [2024-06-28 01:28:40,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755636763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:40,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:40,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:40,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271342695] [2024-06-28 01:28:40,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:40,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:40,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:40,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:40,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:40,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:28:40,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 139 transitions, 1399 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:40,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:40,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:28:40,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:41,091 INFO L124 PetriNetUnfolderBase]: 1105/2042 cut-off events. [2024-06-28 01:28:41,091 INFO L125 PetriNetUnfolderBase]: For 10632/10632 co-relation queries the response was YES. [2024-06-28 01:28:41,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9536 conditions, 2042 events. 1105/2042 cut-off events. For 10632/10632 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 12553 event pairs, 232 based on Foata normal form. 3/1980 useless extension candidates. Maximal degree in co-relation 9485. Up to 1269 conditions per place. [2024-06-28 01:28:41,105 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 138 selfloop transitions, 44 changer transitions 0/189 dead transitions. [2024-06-28 01:28:41,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 189 transitions, 2084 flow [2024-06-28 01:28:41,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:28:41,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:28:41,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 01:28:41,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216049382716049 [2024-06-28 01:28:41,106 INFO L175 Difference]: Start difference. First operand has 105 places, 139 transitions, 1399 flow. Second operand 9 states and 169 transitions. [2024-06-28 01:28:41,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 189 transitions, 2084 flow [2024-06-28 01:28:41,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 189 transitions, 2037 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-28 01:28:41,129 INFO L231 Difference]: Finished difference. Result has 113 places, 144 transitions, 1500 flow [2024-06-28 01:28:41,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1360, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1500, PETRI_PLACES=113, PETRI_TRANSITIONS=144} [2024-06-28 01:28:41,129 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 73 predicate places. [2024-06-28 01:28:41,129 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 144 transitions, 1500 flow [2024-06-28 01:28:41,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:41,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:41,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:41,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:28:41,130 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:41,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:41,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1125301549, now seen corresponding path program 3 times [2024-06-28 01:28:41,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:41,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296775468] [2024-06-28 01:28:41,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:41,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:41,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:41,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:41,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296775468] [2024-06-28 01:28:41,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296775468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:41,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:41,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:41,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985637878] [2024-06-28 01:28:41,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:41,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:41,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:41,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:41,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:41,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:28:41,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 144 transitions, 1500 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:41,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:41,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:28:41,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:42,015 INFO L124 PetriNetUnfolderBase]: 1137/2018 cut-off events. [2024-06-28 01:28:42,015 INFO L125 PetriNetUnfolderBase]: For 11991/11991 co-relation queries the response was YES. [2024-06-28 01:28:42,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10033 conditions, 2018 events. 1137/2018 cut-off events. For 11991/11991 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 12047 event pairs, 175 based on Foata normal form. 1/1971 useless extension candidates. Maximal degree in co-relation 9979. Up to 1474 conditions per place. [2024-06-28 01:28:42,028 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 111 selfloop transitions, 63 changer transitions 0/181 dead transitions. [2024-06-28 01:28:42,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 181 transitions, 2078 flow [2024-06-28 01:28:42,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:28:42,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:28:42,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 01:28:42,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-28 01:28:42,030 INFO L175 Difference]: Start difference. First operand has 113 places, 144 transitions, 1500 flow. Second operand 7 states and 129 transitions. [2024-06-28 01:28:42,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 181 transitions, 2078 flow [2024-06-28 01:28:42,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 181 transitions, 2015 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-28 01:28:42,052 INFO L231 Difference]: Finished difference. Result has 115 places, 154 transitions, 1662 flow [2024-06-28 01:28:42,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1662, PETRI_PLACES=115, PETRI_TRANSITIONS=154} [2024-06-28 01:28:42,053 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 75 predicate places. [2024-06-28 01:28:42,053 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 154 transitions, 1662 flow [2024-06-28 01:28:42,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:42,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:42,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:42,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:28:42,054 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:42,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:42,054 INFO L85 PathProgramCache]: Analyzing trace with hash 2013815355, now seen corresponding path program 4 times [2024-06-28 01:28:42,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:42,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081941083] [2024-06-28 01:28:42,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:42,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:42,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:42,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:42,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081941083] [2024-06-28 01:28:42,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081941083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:42,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:42,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:42,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710082418] [2024-06-28 01:28:42,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:42,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:42,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:42,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:42,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:42,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:28:42,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 154 transitions, 1662 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:42,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:42,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:28:42,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:43,084 INFO L124 PetriNetUnfolderBase]: 1135/2135 cut-off events. [2024-06-28 01:28:43,085 INFO L125 PetriNetUnfolderBase]: For 13152/13152 co-relation queries the response was YES. [2024-06-28 01:28:43,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10284 conditions, 2135 events. 1135/2135 cut-off events. For 13152/13152 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 13479 event pairs, 237 based on Foata normal form. 1/2050 useless extension candidates. Maximal degree in co-relation 10229. Up to 1615 conditions per place. [2024-06-28 01:28:43,111 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 129 selfloop transitions, 43 changer transitions 0/179 dead transitions. [2024-06-28 01:28:43,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 179 transitions, 2137 flow [2024-06-28 01:28:43,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:28:43,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:28:43,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-28 01:28:43,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-06-28 01:28:43,113 INFO L175 Difference]: Start difference. First operand has 115 places, 154 transitions, 1662 flow. Second operand 7 states and 124 transitions. [2024-06-28 01:28:43,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 179 transitions, 2137 flow [2024-06-28 01:28:43,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 179 transitions, 2075 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 01:28:43,140 INFO L231 Difference]: Finished difference. Result has 119 places, 154 transitions, 1700 flow [2024-06-28 01:28:43,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1700, PETRI_PLACES=119, PETRI_TRANSITIONS=154} [2024-06-28 01:28:43,141 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 79 predicate places. [2024-06-28 01:28:43,141 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 154 transitions, 1700 flow [2024-06-28 01:28:43,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:43,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:43,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:43,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:28:43,143 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:43,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:43,143 INFO L85 PathProgramCache]: Analyzing trace with hash -421744572, now seen corresponding path program 3 times [2024-06-28 01:28:43,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:43,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784528754] [2024-06-28 01:28:43,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:43,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:43,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:43,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:43,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784528754] [2024-06-28 01:28:43,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784528754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:43,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:43,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:43,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952490507] [2024-06-28 01:28:43,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:43,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:43,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:43,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:43,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:43,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:28:43,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 154 transitions, 1700 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:43,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:43,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:28:43,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:44,247 INFO L124 PetriNetUnfolderBase]: 1336/2503 cut-off events. [2024-06-28 01:28:44,247 INFO L125 PetriNetUnfolderBase]: For 16686/16686 co-relation queries the response was YES. [2024-06-28 01:28:44,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12354 conditions, 2503 events. 1336/2503 cut-off events. For 16686/16686 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16375 event pairs, 441 based on Foata normal form. 3/2422 useless extension candidates. Maximal degree in co-relation 12297. Up to 1460 conditions per place. [2024-06-28 01:28:44,265 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 150 selfloop transitions, 63 changer transitions 0/220 dead transitions. [2024-06-28 01:28:44,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 220 transitions, 2743 flow [2024-06-28 01:28:44,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:28:44,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:28:44,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 01:28:44,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876543209876543 [2024-06-28 01:28:44,266 INFO L175 Difference]: Start difference. First operand has 119 places, 154 transitions, 1700 flow. Second operand 9 states and 158 transitions. [2024-06-28 01:28:44,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 220 transitions, 2743 flow [2024-06-28 01:28:44,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 220 transitions, 2638 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:28:44,298 INFO L231 Difference]: Finished difference. Result has 126 places, 177 transitions, 2156 flow [2024-06-28 01:28:44,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2156, PETRI_PLACES=126, PETRI_TRANSITIONS=177} [2024-06-28 01:28:44,299 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 86 predicate places. [2024-06-28 01:28:44,299 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 177 transitions, 2156 flow [2024-06-28 01:28:44,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:44,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:44,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:44,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:28:44,300 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:44,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:44,300 INFO L85 PathProgramCache]: Analyzing trace with hash 2017534580, now seen corresponding path program 4 times [2024-06-28 01:28:44,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:44,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334285312] [2024-06-28 01:28:44,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:44,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:44,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:44,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:44,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334285312] [2024-06-28 01:28:44,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334285312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:44,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:44,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:44,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333827200] [2024-06-28 01:28:44,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:44,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:44,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:44,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:44,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:44,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:28:44,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 177 transitions, 2156 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:44,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:44,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:28:44,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:45,242 INFO L124 PetriNetUnfolderBase]: 1390/2570 cut-off events. [2024-06-28 01:28:45,242 INFO L125 PetriNetUnfolderBase]: For 19176/19176 co-relation queries the response was YES. [2024-06-28 01:28:45,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13526 conditions, 2570 events. 1390/2570 cut-off events. For 19176/19176 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 16782 event pairs, 434 based on Foata normal form. 3/2493 useless extension candidates. Maximal degree in co-relation 13465. Up to 1500 conditions per place. [2024-06-28 01:28:45,260 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 141 selfloop transitions, 74 changer transitions 0/222 dead transitions. [2024-06-28 01:28:45,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 222 transitions, 2926 flow [2024-06-28 01:28:45,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:45,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:45,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 01:28:45,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-28 01:28:45,262 INFO L175 Difference]: Start difference. First operand has 126 places, 177 transitions, 2156 flow. Second operand 8 states and 143 transitions. [2024-06-28 01:28:45,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 222 transitions, 2926 flow [2024-06-28 01:28:45,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 222 transitions, 2749 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 01:28:45,302 INFO L231 Difference]: Finished difference. Result has 129 places, 185 transitions, 2333 flow [2024-06-28 01:28:45,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1989, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2333, PETRI_PLACES=129, PETRI_TRANSITIONS=185} [2024-06-28 01:28:45,303 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 89 predicate places. [2024-06-28 01:28:45,303 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 185 transitions, 2333 flow [2024-06-28 01:28:45,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:45,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:45,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:45,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:28:45,304 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:45,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:45,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1107129822, now seen corresponding path program 5 times [2024-06-28 01:28:45,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:45,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086784289] [2024-06-28 01:28:45,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:45,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:45,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:45,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:45,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086784289] [2024-06-28 01:28:45,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086784289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:45,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:45,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:45,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308532226] [2024-06-28 01:28:45,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:45,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:45,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:45,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:45,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:45,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:28:45,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 185 transitions, 2333 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:45,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:45,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:28:45,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:46,457 INFO L124 PetriNetUnfolderBase]: 1465/2758 cut-off events. [2024-06-28 01:28:46,457 INFO L125 PetriNetUnfolderBase]: For 21028/21028 co-relation queries the response was YES. [2024-06-28 01:28:46,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14763 conditions, 2758 events. 1465/2758 cut-off events. For 21028/21028 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 18545 event pairs, 525 based on Foata normal form. 3/2657 useless extension candidates. Maximal degree in co-relation 14699. Up to 2115 conditions per place. [2024-06-28 01:28:46,475 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 193 selfloop transitions, 32 changer transitions 0/232 dead transitions. [2024-06-28 01:28:46,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 232 transitions, 3096 flow [2024-06-28 01:28:46,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:28:46,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:28:46,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 01:28:46,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-28 01:28:46,477 INFO L175 Difference]: Start difference. First operand has 129 places, 185 transitions, 2333 flow. Second operand 9 states and 150 transitions. [2024-06-28 01:28:46,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 232 transitions, 3096 flow [2024-06-28 01:28:46,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 232 transitions, 3012 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 01:28:46,520 INFO L231 Difference]: Finished difference. Result has 134 places, 192 transitions, 2435 flow [2024-06-28 01:28:46,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2256, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2435, PETRI_PLACES=134, PETRI_TRANSITIONS=192} [2024-06-28 01:28:46,520 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 94 predicate places. [2024-06-28 01:28:46,521 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 192 transitions, 2435 flow [2024-06-28 01:28:46,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:46,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:46,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:46,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:28:46,521 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:46,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:46,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1333601752, now seen corresponding path program 6 times [2024-06-28 01:28:46,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:46,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645055965] [2024-06-28 01:28:46,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:46,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:46,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:46,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:46,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645055965] [2024-06-28 01:28:46,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645055965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:46,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:46,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:46,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317522447] [2024-06-28 01:28:46,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:46,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:46,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:46,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:46,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:47,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:28:47,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 192 transitions, 2435 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:47,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:47,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:28:47,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:47,557 INFO L124 PetriNetUnfolderBase]: 1459/2698 cut-off events. [2024-06-28 01:28:47,557 INFO L125 PetriNetUnfolderBase]: For 21479/21479 co-relation queries the response was YES. [2024-06-28 01:28:47,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14492 conditions, 2698 events. 1459/2698 cut-off events. For 21479/21479 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 17858 event pairs, 551 based on Foata normal form. 3/2610 useless extension candidates. Maximal degree in co-relation 14427. Up to 2172 conditions per place. [2024-06-28 01:28:47,577 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 193 selfloop transitions, 23 changer transitions 0/223 dead transitions. [2024-06-28 01:28:47,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 223 transitions, 3019 flow [2024-06-28 01:28:47,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:47,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:47,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 01:28:47,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 01:28:47,578 INFO L175 Difference]: Start difference. First operand has 134 places, 192 transitions, 2435 flow. Second operand 8 states and 135 transitions. [2024-06-28 01:28:47,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 223 transitions, 3019 flow [2024-06-28 01:28:47,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 223 transitions, 2936 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 01:28:47,627 INFO L231 Difference]: Finished difference. Result has 135 places, 192 transitions, 2409 flow [2024-06-28 01:28:47,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2352, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2409, PETRI_PLACES=135, PETRI_TRANSITIONS=192} [2024-06-28 01:28:47,627 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 95 predicate places. [2024-06-28 01:28:47,627 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 192 transitions, 2409 flow [2024-06-28 01:28:47,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:47,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:47,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:47,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:28:47,628 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:47,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:47,628 INFO L85 PathProgramCache]: Analyzing trace with hash -194527685, now seen corresponding path program 1 times [2024-06-28 01:28:47,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:47,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63142185] [2024-06-28 01:28:47,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:47,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:48,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:48,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:48,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63142185] [2024-06-28 01:28:48,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63142185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:48,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:48,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:48,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540871599] [2024-06-28 01:28:48,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:48,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:48,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:48,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:48,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:48,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:28:48,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 192 transitions, 2409 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:48,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:48,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:28:48,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:48,843 INFO L124 PetriNetUnfolderBase]: 1461/2706 cut-off events. [2024-06-28 01:28:48,844 INFO L125 PetriNetUnfolderBase]: For 21303/21303 co-relation queries the response was YES. [2024-06-28 01:28:48,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14437 conditions, 2706 events. 1461/2706 cut-off events. For 21303/21303 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 17866 event pairs, 558 based on Foata normal form. 2/2614 useless extension candidates. Maximal degree in co-relation 14371. Up to 2277 conditions per place. [2024-06-28 01:28:48,865 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 193 selfloop transitions, 18 changer transitions 0/218 dead transitions. [2024-06-28 01:28:48,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 218 transitions, 2957 flow [2024-06-28 01:28:48,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:28:48,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:28:48,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 01:28:48,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4382716049382716 [2024-06-28 01:28:48,866 INFO L175 Difference]: Start difference. First operand has 135 places, 192 transitions, 2409 flow. Second operand 9 states and 142 transitions. [2024-06-28 01:28:48,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 218 transitions, 2957 flow [2024-06-28 01:28:48,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 218 transitions, 2898 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 01:28:48,913 INFO L231 Difference]: Finished difference. Result has 139 places, 197 transitions, 2447 flow [2024-06-28 01:28:48,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2350, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2447, PETRI_PLACES=139, PETRI_TRANSITIONS=197} [2024-06-28 01:28:48,913 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 99 predicate places. [2024-06-28 01:28:48,913 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 197 transitions, 2447 flow [2024-06-28 01:28:48,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:48,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:48,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:48,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:28:48,914 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:48,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:48,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1096793666, now seen corresponding path program 1 times [2024-06-28 01:28:48,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:48,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003173254] [2024-06-28 01:28:48,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:48,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:49,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:49,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:49,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003173254] [2024-06-28 01:28:49,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003173254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:49,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:49,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:49,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111899368] [2024-06-28 01:28:49,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:49,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:49,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:49,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:49,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:49,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:28:49,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 197 transitions, 2447 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:49,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:49,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:28:49,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:50,383 INFO L124 PetriNetUnfolderBase]: 1458/2709 cut-off events. [2024-06-28 01:28:50,383 INFO L125 PetriNetUnfolderBase]: For 21667/21667 co-relation queries the response was YES. [2024-06-28 01:28:50,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14503 conditions, 2709 events. 1458/2709 cut-off events. For 21667/21667 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 17939 event pairs, 553 based on Foata normal form. 2/2614 useless extension candidates. Maximal degree in co-relation 14435. Up to 2256 conditions per place. [2024-06-28 01:28:50,402 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 197 selfloop transitions, 20 changer transitions 0/224 dead transitions. [2024-06-28 01:28:50,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 224 transitions, 2991 flow [2024-06-28 01:28:50,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:50,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:50,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 01:28:50,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4652777777777778 [2024-06-28 01:28:50,404 INFO L175 Difference]: Start difference. First operand has 139 places, 197 transitions, 2447 flow. Second operand 8 states and 134 transitions. [2024-06-28 01:28:50,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 224 transitions, 2991 flow [2024-06-28 01:28:50,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 224 transitions, 2938 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 01:28:50,454 INFO L231 Difference]: Finished difference. Result has 142 places, 199 transitions, 2463 flow [2024-06-28 01:28:50,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2394, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2463, PETRI_PLACES=142, PETRI_TRANSITIONS=199} [2024-06-28 01:28:50,455 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 102 predicate places. [2024-06-28 01:28:50,455 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 199 transitions, 2463 flow [2024-06-28 01:28:50,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:50,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:50,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:50,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:28:50,456 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:50,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:50,456 INFO L85 PathProgramCache]: Analyzing trace with hash -201611212, now seen corresponding path program 1 times [2024-06-28 01:28:50,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:50,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711358238] [2024-06-28 01:28:50,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:50,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:51,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:51,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:51,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711358238] [2024-06-28 01:28:51,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711358238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:51,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:51,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:51,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513758622] [2024-06-28 01:28:51,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:51,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:51,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:51,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:51,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:51,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:28:51,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 199 transitions, 2463 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:51,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:51,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:28:51,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:51,679 INFO L124 PetriNetUnfolderBase]: 1526/2891 cut-off events. [2024-06-28 01:28:51,680 INFO L125 PetriNetUnfolderBase]: For 23332/23332 co-relation queries the response was YES. [2024-06-28 01:28:51,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15127 conditions, 2891 events. 1526/2891 cut-off events. For 23332/23332 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 19758 event pairs, 335 based on Foata normal form. 2/2772 useless extension candidates. Maximal degree in co-relation 15057. Up to 2066 conditions per place. [2024-06-28 01:28:51,704 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 193 selfloop transitions, 43 changer transitions 0/243 dead transitions. [2024-06-28 01:28:51,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 243 transitions, 3248 flow [2024-06-28 01:28:51,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:28:51,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:28:51,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 01:28:51,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:28:51,710 INFO L175 Difference]: Start difference. First operand has 142 places, 199 transitions, 2463 flow. Second operand 9 states and 162 transitions. [2024-06-28 01:28:51,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 243 transitions, 3248 flow [2024-06-28 01:28:51,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 243 transitions, 3193 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 01:28:51,767 INFO L231 Difference]: Finished difference. Result has 146 places, 203 transitions, 2535 flow [2024-06-28 01:28:51,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2408, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2535, PETRI_PLACES=146, PETRI_TRANSITIONS=203} [2024-06-28 01:28:51,767 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 106 predicate places. [2024-06-28 01:28:51,767 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 203 transitions, 2535 flow [2024-06-28 01:28:51,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:51,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:51,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:51,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:28:51,768 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:51,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:51,768 INFO L85 PathProgramCache]: Analyzing trace with hash -506312692, now seen corresponding path program 2 times [2024-06-28 01:28:51,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:51,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932260343] [2024-06-28 01:28:51,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:51,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:51,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:52,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:52,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:52,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932260343] [2024-06-28 01:28:52,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932260343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:52,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:52,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:52,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548993607] [2024-06-28 01:28:52,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:52,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:52,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:52,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:52,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:52,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:28:52,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 203 transitions, 2535 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:52,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:52,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:28:52,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:53,266 INFO L124 PetriNetUnfolderBase]: 1533/2893 cut-off events. [2024-06-28 01:28:53,267 INFO L125 PetriNetUnfolderBase]: For 23854/23854 co-relation queries the response was YES. [2024-06-28 01:28:53,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15383 conditions, 2893 events. 1533/2893 cut-off events. For 23854/23854 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 19741 event pairs, 336 based on Foata normal form. 2/2776 useless extension candidates. Maximal degree in co-relation 15312. Up to 2162 conditions per place. [2024-06-28 01:28:53,288 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 190 selfloop transitions, 49 changer transitions 0/246 dead transitions. [2024-06-28 01:28:53,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 246 transitions, 3287 flow [2024-06-28 01:28:53,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:28:53,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:28:53,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-28 01:28:53,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-06-28 01:28:53,293 INFO L175 Difference]: Start difference. First operand has 146 places, 203 transitions, 2535 flow. Second operand 10 states and 176 transitions. [2024-06-28 01:28:53,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 246 transitions, 3287 flow [2024-06-28 01:28:53,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 246 transitions, 3221 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 01:28:53,349 INFO L231 Difference]: Finished difference. Result has 151 places, 204 transitions, 2585 flow [2024-06-28 01:28:53,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2473, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2585, PETRI_PLACES=151, PETRI_TRANSITIONS=204} [2024-06-28 01:28:53,350 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 111 predicate places. [2024-06-28 01:28:53,350 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 204 transitions, 2585 flow [2024-06-28 01:28:53,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:53,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:53,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:53,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:28:53,350 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:53,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:53,351 INFO L85 PathProgramCache]: Analyzing trace with hash -506312568, now seen corresponding path program 1 times [2024-06-28 01:28:53,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:53,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94263992] [2024-06-28 01:28:53,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:53,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:53,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:53,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:53,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94263992] [2024-06-28 01:28:53,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94263992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:53,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:53,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:53,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270533430] [2024-06-28 01:28:53,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:53,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:53,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:53,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:53,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:54,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:28:54,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 204 transitions, 2585 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:54,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:54,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:28:54,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:54,693 INFO L124 PetriNetUnfolderBase]: 1605/2989 cut-off events. [2024-06-28 01:28:54,693 INFO L125 PetriNetUnfolderBase]: For 25991/25991 co-relation queries the response was YES. [2024-06-28 01:28:54,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16042 conditions, 2989 events. 1605/2989 cut-off events. For 25991/25991 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 20275 event pairs, 349 based on Foata normal form. 3/2893 useless extension candidates. Maximal degree in co-relation 15969. Up to 1509 conditions per place. [2024-06-28 01:28:54,714 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 173 selfloop transitions, 86 changer transitions 0/266 dead transitions. [2024-06-28 01:28:54,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 266 transitions, 3549 flow [2024-06-28 01:28:54,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:28:54,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:28:54,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-28 01:28:54,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5202020202020202 [2024-06-28 01:28:54,716 INFO L175 Difference]: Start difference. First operand has 151 places, 204 transitions, 2585 flow. Second operand 11 states and 206 transitions. [2024-06-28 01:28:54,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 266 transitions, 3549 flow [2024-06-28 01:28:54,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 266 transitions, 3452 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 01:28:54,778 INFO L231 Difference]: Finished difference. Result has 155 places, 210 transitions, 2744 flow [2024-06-28 01:28:54,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2488, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2744, PETRI_PLACES=155, PETRI_TRANSITIONS=210} [2024-06-28 01:28:54,778 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 115 predicate places. [2024-06-28 01:28:54,778 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 210 transitions, 2744 flow [2024-06-28 01:28:54,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:54,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:54,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:54,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:28:54,779 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:54,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:54,779 INFO L85 PathProgramCache]: Analyzing trace with hash 267068334, now seen corresponding path program 3 times [2024-06-28 01:28:54,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:54,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491010655] [2024-06-28 01:28:54,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:54,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:55,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:55,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:55,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491010655] [2024-06-28 01:28:55,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491010655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:55,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:55,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:55,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901781042] [2024-06-28 01:28:55,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:55,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:55,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:55,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:55,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:55,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:28:55,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 210 transitions, 2744 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:55,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:55,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:28:55,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:55,793 INFO L124 PetriNetUnfolderBase]: 1708/3133 cut-off events. [2024-06-28 01:28:55,793 INFO L125 PetriNetUnfolderBase]: For 30763/30763 co-relation queries the response was YES. [2024-06-28 01:28:55,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17524 conditions, 3133 events. 1708/3133 cut-off events. For 30763/30763 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 21335 event pairs, 276 based on Foata normal form. 2/3044 useless extension candidates. Maximal degree in co-relation 17449. Up to 1978 conditions per place. [2024-06-28 01:28:55,814 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 176 selfloop transitions, 69 changer transitions 0/252 dead transitions. [2024-06-28 01:28:55,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 252 transitions, 3500 flow [2024-06-28 01:28:55,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:55,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:55,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 01:28:55,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-28 01:28:55,815 INFO L175 Difference]: Start difference. First operand has 155 places, 210 transitions, 2744 flow. Second operand 8 states and 143 transitions. [2024-06-28 01:28:55,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 252 transitions, 3500 flow [2024-06-28 01:28:55,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 252 transitions, 3384 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 01:28:55,881 INFO L231 Difference]: Finished difference. Result has 158 places, 220 transitions, 2881 flow [2024-06-28 01:28:55,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2628, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2881, PETRI_PLACES=158, PETRI_TRANSITIONS=220} [2024-06-28 01:28:55,882 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 118 predicate places. [2024-06-28 01:28:55,882 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 220 transitions, 2881 flow [2024-06-28 01:28:55,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:55,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:55,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:55,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:28:55,883 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:55,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:55,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1396019356, now seen corresponding path program 4 times [2024-06-28 01:28:55,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:55,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161751276] [2024-06-28 01:28:55,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:55,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:56,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:56,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:56,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161751276] [2024-06-28 01:28:56,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161751276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:56,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:56,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:56,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678329251] [2024-06-28 01:28:56,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:56,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:56,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:56,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:56,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:56,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:28:56,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 220 transitions, 2881 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:56,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:56,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:28:56,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:56,994 INFO L124 PetriNetUnfolderBase]: 1810/3355 cut-off events. [2024-06-28 01:28:56,995 INFO L125 PetriNetUnfolderBase]: For 33039/33039 co-relation queries the response was YES. [2024-06-28 01:28:57,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19017 conditions, 3355 events. 1810/3355 cut-off events. For 33039/33039 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 23509 event pairs, 351 based on Foata normal form. 2/3258 useless extension candidates. Maximal degree in co-relation 18938. Up to 2210 conditions per place. [2024-06-28 01:28:57,022 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 179 selfloop transitions, 74 changer transitions 0/260 dead transitions. [2024-06-28 01:28:57,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 260 transitions, 3689 flow [2024-06-28 01:28:57,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:57,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:57,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 01:28:57,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-28 01:28:57,024 INFO L175 Difference]: Start difference. First operand has 158 places, 220 transitions, 2881 flow. Second operand 8 states and 148 transitions. [2024-06-28 01:28:57,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 260 transitions, 3689 flow [2024-06-28 01:28:57,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 260 transitions, 3531 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 01:28:57,114 INFO L231 Difference]: Finished difference. Result has 162 places, 228 transitions, 3011 flow [2024-06-28 01:28:57,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2755, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3011, PETRI_PLACES=162, PETRI_TRANSITIONS=228} [2024-06-28 01:28:57,115 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 122 predicate places. [2024-06-28 01:28:57,115 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 228 transitions, 3011 flow [2024-06-28 01:28:57,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:57,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:57,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:57,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:28:57,116 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:57,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:57,116 INFO L85 PathProgramCache]: Analyzing trace with hash 368788802, now seen corresponding path program 2 times [2024-06-28 01:28:57,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:57,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230657150] [2024-06-28 01:28:57,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:57,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:57,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:57,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:57,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230657150] [2024-06-28 01:28:57,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230657150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:57,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:57,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:57,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140157476] [2024-06-28 01:28:57,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:57,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:57,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:57,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:57,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:57,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:28:57,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 228 transitions, 3011 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:57,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:57,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:28:57,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:58,250 INFO L124 PetriNetUnfolderBase]: 1828/3411 cut-off events. [2024-06-28 01:28:58,250 INFO L125 PetriNetUnfolderBase]: For 34076/34076 co-relation queries the response was YES. [2024-06-28 01:28:58,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19343 conditions, 3411 events. 1828/3411 cut-off events. For 34076/34076 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 24060 event pairs, 305 based on Foata normal form. 1/3314 useless extension candidates. Maximal degree in co-relation 19263. Up to 2138 conditions per place. [2024-06-28 01:28:58,281 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 230 selfloop transitions, 59 changer transitions 0/296 dead transitions. [2024-06-28 01:28:58,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 296 transitions, 4306 flow [2024-06-28 01:28:58,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:58,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:58,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 01:28:58,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5347222222222222 [2024-06-28 01:28:58,282 INFO L175 Difference]: Start difference. First operand has 162 places, 228 transitions, 3011 flow. Second operand 8 states and 154 transitions. [2024-06-28 01:28:58,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 296 transitions, 4306 flow [2024-06-28 01:28:58,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 296 transitions, 4254 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 01:28:58,376 INFO L231 Difference]: Finished difference. Result has 168 places, 239 transitions, 3273 flow [2024-06-28 01:28:58,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2963, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3273, PETRI_PLACES=168, PETRI_TRANSITIONS=239} [2024-06-28 01:28:58,376 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 128 predicate places. [2024-06-28 01:28:58,376 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 239 transitions, 3273 flow [2024-06-28 01:28:58,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:58,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:58,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:58,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:28:58,377 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:58,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:58,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1408592026, now seen corresponding path program 5 times [2024-06-28 01:28:58,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:58,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324394849] [2024-06-28 01:28:58,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:58,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:58,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:58,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:58,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324394849] [2024-06-28 01:28:58,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324394849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:58,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:58,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:58,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288908654] [2024-06-28 01:28:58,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:58,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:58,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:58,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:58,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:58,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:28:58,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 239 transitions, 3273 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:58,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:58,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:28:58,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:59,530 INFO L124 PetriNetUnfolderBase]: 1835/3447 cut-off events. [2024-06-28 01:28:59,530 INFO L125 PetriNetUnfolderBase]: For 35136/35136 co-relation queries the response was YES. [2024-06-28 01:28:59,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20263 conditions, 3447 events. 1835/3447 cut-off events. For 35136/35136 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 24366 event pairs, 349 based on Foata normal form. 2/3345 useless extension candidates. Maximal degree in co-relation 20180. Up to 2506 conditions per place. [2024-06-28 01:28:59,559 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 192 selfloop transitions, 70 changer transitions 0/269 dead transitions. [2024-06-28 01:28:59,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 269 transitions, 3958 flow [2024-06-28 01:28:59,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:59,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:59,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 01:28:59,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-28 01:28:59,560 INFO L175 Difference]: Start difference. First operand has 168 places, 239 transitions, 3273 flow. Second operand 8 states and 147 transitions. [2024-06-28 01:28:59,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 269 transitions, 3958 flow [2024-06-28 01:28:59,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 269 transitions, 3896 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 01:28:59,669 INFO L231 Difference]: Finished difference. Result has 172 places, 240 transitions, 3379 flow [2024-06-28 01:28:59,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3217, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3379, PETRI_PLACES=172, PETRI_TRANSITIONS=240} [2024-06-28 01:28:59,670 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 132 predicate places. [2024-06-28 01:28:59,670 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 240 transitions, 3379 flow [2024-06-28 01:28:59,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:59,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:59,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:59,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:28:59,670 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:59,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:59,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1505070514, now seen corresponding path program 3 times [2024-06-28 01:28:59,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:59,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688122933] [2024-06-28 01:28:59,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:59,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:00,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:00,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:00,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688122933] [2024-06-28 01:29:00,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688122933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:00,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:00,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:00,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655681534] [2024-06-28 01:29:00,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:00,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:00,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:00,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:00,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:00,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:00,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 240 transitions, 3379 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:00,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:00,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:00,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:01,251 INFO L124 PetriNetUnfolderBase]: 1908/3667 cut-off events. [2024-06-28 01:29:01,251 INFO L125 PetriNetUnfolderBase]: For 37269/37269 co-relation queries the response was YES. [2024-06-28 01:29:01,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21294 conditions, 3667 events. 1908/3667 cut-off events. For 37269/37269 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 26911 event pairs, 424 based on Foata normal form. 3/3534 useless extension candidates. Maximal degree in co-relation 21210. Up to 2185 conditions per place. [2024-06-28 01:29:01,281 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 210 selfloop transitions, 89 changer transitions 0/306 dead transitions. [2024-06-28 01:29:01,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 306 transitions, 4566 flow [2024-06-28 01:29:01,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:29:01,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:29:01,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-28 01:29:01,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361111111111111 [2024-06-28 01:29:01,282 INFO L175 Difference]: Start difference. First operand has 172 places, 240 transitions, 3379 flow. Second operand 10 states and 193 transitions. [2024-06-28 01:29:01,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 306 transitions, 4566 flow [2024-06-28 01:29:01,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 306 transitions, 4423 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 01:29:01,388 INFO L231 Difference]: Finished difference. Result has 177 places, 251 transitions, 3606 flow [2024-06-28 01:29:01,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3242, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3606, PETRI_PLACES=177, PETRI_TRANSITIONS=251} [2024-06-28 01:29:01,388 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 137 predicate places. [2024-06-28 01:29:01,388 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 251 transitions, 3606 flow [2024-06-28 01:29:01,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:01,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:01,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:01,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:29:01,389 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:01,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:01,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1513830184, now seen corresponding path program 4 times [2024-06-28 01:29:01,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:01,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867322493] [2024-06-28 01:29:01,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:01,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:02,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:02,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:02,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867322493] [2024-06-28 01:29:02,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867322493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:02,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:02,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:02,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831052846] [2024-06-28 01:29:02,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:02,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:02,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:02,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:02,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:02,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:02,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 251 transitions, 3606 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:02,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:02,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:02,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:03,168 INFO L124 PetriNetUnfolderBase]: 1923/3711 cut-off events. [2024-06-28 01:29:03,168 INFO L125 PetriNetUnfolderBase]: For 38824/38824 co-relation queries the response was YES. [2024-06-28 01:29:03,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21823 conditions, 3711 events. 1923/3711 cut-off events. For 38824/38824 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 27258 event pairs, 456 based on Foata normal form. 3/3571 useless extension candidates. Maximal degree in co-relation 21737. Up to 2338 conditions per place. [2024-06-28 01:29:03,202 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 219 selfloop transitions, 79 changer transitions 0/305 dead transitions. [2024-06-28 01:29:03,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 305 transitions, 4609 flow [2024-06-28 01:29:03,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:29:03,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:29:03,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-28 01:29:03,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-06-28 01:29:03,207 INFO L175 Difference]: Start difference. First operand has 177 places, 251 transitions, 3606 flow. Second operand 10 states and 186 transitions. [2024-06-28 01:29:03,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 305 transitions, 4609 flow [2024-06-28 01:29:03,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 305 transitions, 4505 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 01:29:03,382 INFO L231 Difference]: Finished difference. Result has 182 places, 255 transitions, 3736 flow [2024-06-28 01:29:03,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3510, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3736, PETRI_PLACES=182, PETRI_TRANSITIONS=255} [2024-06-28 01:29:03,383 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 142 predicate places. [2024-06-28 01:29:03,384 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 255 transitions, 3736 flow [2024-06-28 01:29:03,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:03,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:03,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:03,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:29:03,384 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:03,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:03,385 INFO L85 PathProgramCache]: Analyzing trace with hash 524550104, now seen corresponding path program 6 times [2024-06-28 01:29:03,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:03,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762264587] [2024-06-28 01:29:03,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:03,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:03,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:03,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:03,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762264587] [2024-06-28 01:29:03,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762264587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:03,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:03,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:03,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557783632] [2024-06-28 01:29:03,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:03,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:03,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:03,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:03,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:04,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:04,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 255 transitions, 3736 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:04,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:04,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:04,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:04,741 INFO L124 PetriNetUnfolderBase]: 1961/3795 cut-off events. [2024-06-28 01:29:04,741 INFO L125 PetriNetUnfolderBase]: For 39583/39583 co-relation queries the response was YES. [2024-06-28 01:29:04,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22576 conditions, 3795 events. 1961/3795 cut-off events. For 39583/39583 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 28075 event pairs, 350 based on Foata normal form. 2/3647 useless extension candidates. Maximal degree in co-relation 22488. Up to 2269 conditions per place. [2024-06-28 01:29:04,772 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 202 selfloop transitions, 85 changer transitions 0/294 dead transitions. [2024-06-28 01:29:04,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 294 transitions, 4602 flow [2024-06-28 01:29:04,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:04,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:04,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 01:29:04,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-28 01:29:04,775 INFO L175 Difference]: Start difference. First operand has 182 places, 255 transitions, 3736 flow. Second operand 8 states and 145 transitions. [2024-06-28 01:29:04,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 294 transitions, 4602 flow [2024-06-28 01:29:04,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 294 transitions, 4442 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 01:29:04,903 INFO L231 Difference]: Finished difference. Result has 183 places, 260 transitions, 3850 flow [2024-06-28 01:29:04,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3576, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3850, PETRI_PLACES=183, PETRI_TRANSITIONS=260} [2024-06-28 01:29:04,904 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 143 predicate places. [2024-06-28 01:29:04,904 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 260 transitions, 3850 flow [2024-06-28 01:29:04,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:04,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:04,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:04,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:29:04,904 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:04,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:04,905 INFO L85 PathProgramCache]: Analyzing trace with hash 524610554, now seen corresponding path program 7 times [2024-06-28 01:29:04,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:04,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394595196] [2024-06-28 01:29:04,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:04,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:05,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:05,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:05,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394595196] [2024-06-28 01:29:05,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394595196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:05,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:05,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:05,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878973124] [2024-06-28 01:29:05,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:05,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:05,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:05,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:05,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:05,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:05,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 260 transitions, 3850 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:05,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:05,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:05,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:06,308 INFO L124 PetriNetUnfolderBase]: 1958/3885 cut-off events. [2024-06-28 01:29:06,309 INFO L125 PetriNetUnfolderBase]: For 40457/40457 co-relation queries the response was YES. [2024-06-28 01:29:06,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22925 conditions, 3885 events. 1958/3885 cut-off events. For 40457/40457 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 29408 event pairs, 471 based on Foata normal form. 2/3713 useless extension candidates. Maximal degree in co-relation 22835. Up to 2659 conditions per place. [2024-06-28 01:29:06,343 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 211 selfloop transitions, 81 changer transitions 0/299 dead transitions. [2024-06-28 01:29:06,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 299 transitions, 4672 flow [2024-06-28 01:29:06,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:06,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:06,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 01:29:06,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49382716049382713 [2024-06-28 01:29:06,345 INFO L175 Difference]: Start difference. First operand has 183 places, 260 transitions, 3850 flow. Second operand 9 states and 160 transitions. [2024-06-28 01:29:06,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 299 transitions, 4672 flow [2024-06-28 01:29:06,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 299 transitions, 4611 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 01:29:06,485 INFO L231 Difference]: Finished difference. Result has 189 places, 261 transitions, 4002 flow [2024-06-28 01:29:06,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3789, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4002, PETRI_PLACES=189, PETRI_TRANSITIONS=261} [2024-06-28 01:29:06,485 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 149 predicate places. [2024-06-28 01:29:06,485 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 261 transitions, 4002 flow [2024-06-28 01:29:06,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:06,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:06,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:06,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:29:06,486 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:06,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:06,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1999028918, now seen corresponding path program 5 times [2024-06-28 01:29:06,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:06,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119384389] [2024-06-28 01:29:06,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:06,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:07,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:07,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:07,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119384389] [2024-06-28 01:29:07,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119384389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:07,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:07,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:07,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318373825] [2024-06-28 01:29:07,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:07,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:07,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:07,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:07,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:07,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:07,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 261 transitions, 4002 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:07,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:07,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:07,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:07,898 INFO L124 PetriNetUnfolderBase]: 2048/3903 cut-off events. [2024-06-28 01:29:07,899 INFO L125 PetriNetUnfolderBase]: For 43071/43071 co-relation queries the response was YES. [2024-06-28 01:29:07,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24160 conditions, 3903 events. 2048/3903 cut-off events. For 43071/43071 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 28664 event pairs, 439 based on Foata normal form. 3/3767 useless extension candidates. Maximal degree in co-relation 24068. Up to 1662 conditions per place. [2024-06-28 01:29:07,938 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 170 selfloop transitions, 154 changer transitions 0/331 dead transitions. [2024-06-28 01:29:07,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 331 transitions, 5229 flow [2024-06-28 01:29:07,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:29:07,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:29:07,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 01:29:07,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-28 01:29:07,939 INFO L175 Difference]: Start difference. First operand has 189 places, 261 transitions, 4002 flow. Second operand 10 states and 189 transitions. [2024-06-28 01:29:07,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 331 transitions, 5229 flow [2024-06-28 01:29:08,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 331 transitions, 5075 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 01:29:08,085 INFO L231 Difference]: Finished difference. Result has 194 places, 277 transitions, 4439 flow [2024-06-28 01:29:08,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3852, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4439, PETRI_PLACES=194, PETRI_TRANSITIONS=277} [2024-06-28 01:29:08,086 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 154 predicate places. [2024-06-28 01:29:08,086 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 277 transitions, 4439 flow [2024-06-28 01:29:08,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:08,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:08,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:08,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:29:08,086 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:08,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:08,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1880941238, now seen corresponding path program 6 times [2024-06-28 01:29:08,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:08,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838619054] [2024-06-28 01:29:08,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:08,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:08,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:08,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:08,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838619054] [2024-06-28 01:29:08,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838619054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:08,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:08,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:08,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069995258] [2024-06-28 01:29:08,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:08,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:08,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:08,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:08,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:08,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:08,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 277 transitions, 4439 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:08,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:08,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:08,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:09,547 INFO L124 PetriNetUnfolderBase]: 2093/3883 cut-off events. [2024-06-28 01:29:09,547 INFO L125 PetriNetUnfolderBase]: For 45040/45040 co-relation queries the response was YES. [2024-06-28 01:29:09,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25802 conditions, 3883 events. 2093/3883 cut-off events. For 45040/45040 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 27646 event pairs, 363 based on Foata normal form. 1/3775 useless extension candidates. Maximal degree in co-relation 25708. Up to 2677 conditions per place. [2024-06-28 01:29:09,577 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 229 selfloop transitions, 126 changer transitions 0/362 dead transitions. [2024-06-28 01:29:09,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 362 transitions, 6151 flow [2024-06-28 01:29:09,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:09,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:09,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 01:29:09,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5123456790123457 [2024-06-28 01:29:09,578 INFO L175 Difference]: Start difference. First operand has 194 places, 277 transitions, 4439 flow. Second operand 9 states and 166 transitions. [2024-06-28 01:29:09,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 362 transitions, 6151 flow [2024-06-28 01:29:09,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 362 transitions, 5937 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 01:29:09,736 INFO L231 Difference]: Finished difference. Result has 199 places, 321 transitions, 5334 flow [2024-06-28 01:29:09,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4252, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5334, PETRI_PLACES=199, PETRI_TRANSITIONS=321} [2024-06-28 01:29:09,736 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 159 predicate places. [2024-06-28 01:29:09,737 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 321 transitions, 5334 flow [2024-06-28 01:29:09,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:09,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:09,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:09,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:29:09,737 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:09,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:09,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1880763608, now seen corresponding path program 7 times [2024-06-28 01:29:09,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:09,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285127472] [2024-06-28 01:29:09,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:09,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:10,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:10,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:10,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285127472] [2024-06-28 01:29:10,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285127472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:10,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:10,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:10,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539402796] [2024-06-28 01:29:10,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:10,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:10,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:10,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:10,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:10,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:10,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 321 transitions, 5334 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:10,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:10,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:10,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:11,409 INFO L124 PetriNetUnfolderBase]: 2175/4167 cut-off events. [2024-06-28 01:29:11,409 INFO L125 PetriNetUnfolderBase]: For 52056/52056 co-relation queries the response was YES. [2024-06-28 01:29:11,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27996 conditions, 4167 events. 2175/4167 cut-off events. For 52056/52056 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 31063 event pairs, 470 based on Foata normal form. 3/4015 useless extension candidates. Maximal degree in co-relation 27898. Up to 2386 conditions per place. [2024-06-28 01:29:11,450 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 248 selfloop transitions, 131 changer transitions 0/386 dead transitions. [2024-06-28 01:29:11,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 386 transitions, 6723 flow [2024-06-28 01:29:11,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:11,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:11,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 01:29:11,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5154320987654321 [2024-06-28 01:29:11,451 INFO L175 Difference]: Start difference. First operand has 199 places, 321 transitions, 5334 flow. Second operand 9 states and 167 transitions. [2024-06-28 01:29:11,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 386 transitions, 6723 flow [2024-06-28 01:29:11,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 386 transitions, 6614 flow, removed 49 selfloop flow, removed 2 redundant places. [2024-06-28 01:29:11,660 INFO L231 Difference]: Finished difference. Result has 206 places, 335 transitions, 5810 flow [2024-06-28 01:29:11,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5261, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5810, PETRI_PLACES=206, PETRI_TRANSITIONS=335} [2024-06-28 01:29:11,660 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 166 predicate places. [2024-06-28 01:29:11,660 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 335 transitions, 5810 flow [2024-06-28 01:29:11,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:11,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:11,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:11,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:29:11,661 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:11,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:11,661 INFO L85 PathProgramCache]: Analyzing trace with hash 642703008, now seen corresponding path program 8 times [2024-06-28 01:29:11,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:11,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891099228] [2024-06-28 01:29:11,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:11,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:12,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:12,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:12,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891099228] [2024-06-28 01:29:12,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891099228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:12,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:12,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:12,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252251633] [2024-06-28 01:29:12,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:12,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:12,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:12,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:12,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:12,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:12,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 335 transitions, 5810 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:12,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:12,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:12,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:13,207 INFO L124 PetriNetUnfolderBase]: 2236/4398 cut-off events. [2024-06-28 01:29:13,207 INFO L125 PetriNetUnfolderBase]: For 56549/56549 co-relation queries the response was YES. [2024-06-28 01:29:13,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29480 conditions, 4398 events. 2236/4398 cut-off events. For 56549/56549 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 33881 event pairs, 497 based on Foata normal form. 3/4201 useless extension candidates. Maximal degree in co-relation 29380. Up to 2506 conditions per place. [2024-06-28 01:29:13,254 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 246 selfloop transitions, 138 changer transitions 0/391 dead transitions. [2024-06-28 01:29:13,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 391 transitions, 7072 flow [2024-06-28 01:29:13,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:13,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:13,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 01:29:13,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5347222222222222 [2024-06-28 01:29:13,256 INFO L175 Difference]: Start difference. First operand has 206 places, 335 transitions, 5810 flow. Second operand 8 states and 154 transitions. [2024-06-28 01:29:13,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 391 transitions, 7072 flow [2024-06-28 01:29:13,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 391 transitions, 6795 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 01:29:13,482 INFO L231 Difference]: Finished difference. Result has 207 places, 345 transitions, 6026 flow [2024-06-28 01:29:13,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5533, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6026, PETRI_PLACES=207, PETRI_TRANSITIONS=345} [2024-06-28 01:29:13,483 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 167 predicate places. [2024-06-28 01:29:13,483 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 345 transitions, 6026 flow [2024-06-28 01:29:13,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:13,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:13,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:13,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:29:13,483 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:13,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:13,483 INFO L85 PathProgramCache]: Analyzing trace with hash 294321538, now seen corresponding path program 9 times [2024-06-28 01:29:13,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:13,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570120497] [2024-06-28 01:29:13,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:13,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:14,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:14,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:14,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570120497] [2024-06-28 01:29:14,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570120497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:14,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:14,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:14,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584411967] [2024-06-28 01:29:14,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:14,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:14,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:14,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:14,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:14,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:14,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 345 transitions, 6026 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:14,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:14,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:14,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:15,180 INFO L124 PetriNetUnfolderBase]: 2318/4393 cut-off events. [2024-06-28 01:29:15,181 INFO L125 PetriNetUnfolderBase]: For 59596/59596 co-relation queries the response was YES. [2024-06-28 01:29:15,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30550 conditions, 4393 events. 2318/4393 cut-off events. For 59596/59596 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 32927 event pairs, 883 based on Foata normal form. 3/4249 useless extension candidates. Maximal degree in co-relation 30449. Up to 3496 conditions per place. [2024-06-28 01:29:15,219 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 350 selfloop transitions, 42 changer transitions 0/399 dead transitions. [2024-06-28 01:29:15,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 399 transitions, 7352 flow [2024-06-28 01:29:15,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:15,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:15,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 01:29:15,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:29:15,220 INFO L175 Difference]: Start difference. First operand has 207 places, 345 transitions, 6026 flow. Second operand 9 states and 153 transitions. [2024-06-28 01:29:15,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 399 transitions, 7352 flow [2024-06-28 01:29:15,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 399 transitions, 7053 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 01:29:15,432 INFO L231 Difference]: Finished difference. Result has 210 places, 359 transitions, 6130 flow [2024-06-28 01:29:15,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5727, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6130, PETRI_PLACES=210, PETRI_TRANSITIONS=359} [2024-06-28 01:29:15,433 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 170 predicate places. [2024-06-28 01:29:15,433 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 359 transitions, 6130 flow [2024-06-28 01:29:15,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:15,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:15,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:15,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:29:15,433 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:15,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:15,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1614273886, now seen corresponding path program 10 times [2024-06-28 01:29:15,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:15,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576681810] [2024-06-28 01:29:15,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:15,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:16,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:16,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:16,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576681810] [2024-06-28 01:29:16,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576681810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:16,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:16,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:16,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766770923] [2024-06-28 01:29:16,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:16,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:16,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:16,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:16,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:16,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:16,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 359 transitions, 6130 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:16,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:16,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:16,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:17,107 INFO L124 PetriNetUnfolderBase]: 2312/4435 cut-off events. [2024-06-28 01:29:17,108 INFO L125 PetriNetUnfolderBase]: For 56252/56252 co-relation queries the response was YES. [2024-06-28 01:29:17,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29936 conditions, 4435 events. 2312/4435 cut-off events. For 56252/56252 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 33597 event pairs, 866 based on Foata normal form. 3/4277 useless extension candidates. Maximal degree in co-relation 29834. Up to 3421 conditions per place. [2024-06-28 01:29:17,154 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 350 selfloop transitions, 52 changer transitions 0/409 dead transitions. [2024-06-28 01:29:17,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 409 transitions, 7314 flow [2024-06-28 01:29:17,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:17,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:17,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 01:29:17,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876543209876543 [2024-06-28 01:29:17,155 INFO L175 Difference]: Start difference. First operand has 210 places, 359 transitions, 6130 flow. Second operand 9 states and 158 transitions. [2024-06-28 01:29:17,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 409 transitions, 7314 flow [2024-06-28 01:29:17,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 409 transitions, 7159 flow, removed 48 selfloop flow, removed 6 redundant places. [2024-06-28 01:29:17,420 INFO L231 Difference]: Finished difference. Result has 213 places, 359 transitions, 6102 flow [2024-06-28 01:29:17,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5975, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6102, PETRI_PLACES=213, PETRI_TRANSITIONS=359} [2024-06-28 01:29:17,421 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 173 predicate places. [2024-06-28 01:29:17,421 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 359 transitions, 6102 flow [2024-06-28 01:29:17,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:17,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:17,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:17,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:29:17,422 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:17,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:17,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1486039428, now seen corresponding path program 1 times [2024-06-28 01:29:17,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:17,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483396534] [2024-06-28 01:29:17,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:17,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:18,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:18,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:18,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483396534] [2024-06-28 01:29:18,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483396534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:18,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:18,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:18,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207189375] [2024-06-28 01:29:18,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:18,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:18,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:18,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:18,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:18,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:18,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 359 transitions, 6102 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:18,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:18,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:18,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:19,204 INFO L124 PetriNetUnfolderBase]: 2314/4384 cut-off events. [2024-06-28 01:29:19,205 INFO L125 PetriNetUnfolderBase]: For 54612/54612 co-relation queries the response was YES. [2024-06-28 01:29:19,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29756 conditions, 4384 events. 2314/4384 cut-off events. For 54612/54612 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 32810 event pairs, 920 based on Foata normal form. 2/4240 useless extension candidates. Maximal degree in co-relation 29653. Up to 3656 conditions per place. [2024-06-28 01:29:19,249 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 362 selfloop transitions, 19 changer transitions 0/388 dead transitions. [2024-06-28 01:29:19,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 388 transitions, 7010 flow [2024-06-28 01:29:19,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:19,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:19,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 01:29:19,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45987654320987653 [2024-06-28 01:29:19,252 INFO L175 Difference]: Start difference. First operand has 213 places, 359 transitions, 6102 flow. Second operand 9 states and 149 transitions. [2024-06-28 01:29:19,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 388 transitions, 7010 flow [2024-06-28 01:29:19,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 388 transitions, 6823 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-28 01:29:19,488 INFO L231 Difference]: Finished difference. Result has 215 places, 361 transitions, 5980 flow [2024-06-28 01:29:19,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5915, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5980, PETRI_PLACES=215, PETRI_TRANSITIONS=361} [2024-06-28 01:29:19,488 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 175 predicate places. [2024-06-28 01:29:19,488 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 361 transitions, 5980 flow [2024-06-28 01:29:19,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:19,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:19,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:19,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:29:19,489 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:19,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:19,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1900519642, now seen corresponding path program 1 times [2024-06-28 01:29:19,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:19,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268460628] [2024-06-28 01:29:19,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:19,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:19,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:19,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:19,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268460628] [2024-06-28 01:29:19,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268460628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:19,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:19,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:29:19,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129968197] [2024-06-28 01:29:19,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:19,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:29:19,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:19,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:29:19,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:29:19,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 36 [2024-06-28 01:29:19,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 361 transitions, 5980 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:19,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:19,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 36 [2024-06-28 01:29:19,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:19,943 INFO L124 PetriNetUnfolderBase]: 1035/2222 cut-off events. [2024-06-28 01:29:19,944 INFO L125 PetriNetUnfolderBase]: For 24312/24395 co-relation queries the response was YES. [2024-06-28 01:29:19,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13989 conditions, 2222 events. 1035/2222 cut-off events. For 24312/24395 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 15974 event pairs, 261 based on Foata normal form. 202/2225 useless extension candidates. Maximal degree in co-relation 13886. Up to 723 conditions per place. [2024-06-28 01:29:19,966 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 118 selfloop transitions, 100 changer transitions 0/324 dead transitions. [2024-06-28 01:29:19,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 324 transitions, 5810 flow [2024-06-28 01:29:19,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:29:19,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:29:19,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2024-06-28 01:29:19,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-06-28 01:29:19,967 INFO L175 Difference]: Start difference. First operand has 215 places, 361 transitions, 5980 flow. Second operand 4 states and 99 transitions. [2024-06-28 01:29:19,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 324 transitions, 5810 flow [2024-06-28 01:29:20,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 324 transitions, 4961 flow, removed 54 selfloop flow, removed 32 redundant places. [2024-06-28 01:29:20,055 INFO L231 Difference]: Finished difference. Result has 187 places, 312 transitions, 4871 flow [2024-06-28 01:29:20,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4441, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4871, PETRI_PLACES=187, PETRI_TRANSITIONS=312} [2024-06-28 01:29:20,056 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 147 predicate places. [2024-06-28 01:29:20,056 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 312 transitions, 4871 flow [2024-06-28 01:29:20,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:20,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:20,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:20,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:29:20,060 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:20,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:20,061 INFO L85 PathProgramCache]: Analyzing trace with hash -2133928773, now seen corresponding path program 1 times [2024-06-28 01:29:20,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:20,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959256840] [2024-06-28 01:29:20,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:20,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:20,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:20,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:20,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959256840] [2024-06-28 01:29:20,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959256840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:20,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:20,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:20,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926818838] [2024-06-28 01:29:20,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:20,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:20,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:20,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:20,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:20,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:20,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 312 transitions, 4871 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:20,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:20,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:20,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:21,497 INFO L124 PetriNetUnfolderBase]: 1422/2799 cut-off events. [2024-06-28 01:29:21,497 INFO L125 PetriNetUnfolderBase]: For 38146/38154 co-relation queries the response was YES. [2024-06-28 01:29:21,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17105 conditions, 2799 events. 1422/2799 cut-off events. For 38146/38154 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 18781 event pairs, 340 based on Foata normal form. 10/2602 useless extension candidates. Maximal degree in co-relation 17014. Up to 1324 conditions per place. [2024-06-28 01:29:21,522 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 217 selfloop transitions, 131 changer transitions 0/356 dead transitions. [2024-06-28 01:29:21,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 356 transitions, 5879 flow [2024-06-28 01:29:21,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:29:21,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:29:21,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-28 01:29:21,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-06-28 01:29:21,525 INFO L175 Difference]: Start difference. First operand has 187 places, 312 transitions, 4871 flow. Second operand 10 states and 183 transitions. [2024-06-28 01:29:21,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 356 transitions, 5879 flow [2024-06-28 01:29:21,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 356 transitions, 5861 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-28 01:29:21,707 INFO L231 Difference]: Finished difference. Result has 196 places, 314 transitions, 5155 flow [2024-06-28 01:29:21,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4861, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5155, PETRI_PLACES=196, PETRI_TRANSITIONS=314} [2024-06-28 01:29:21,708 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 156 predicate places. [2024-06-28 01:29:21,708 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 314 transitions, 5155 flow [2024-06-28 01:29:21,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:21,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:21,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:21,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:29:21,709 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:21,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:21,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1484176759, now seen corresponding path program 2 times [2024-06-28 01:29:21,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:21,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363879194] [2024-06-28 01:29:21,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:21,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:22,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:22,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:22,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363879194] [2024-06-28 01:29:22,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363879194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:22,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:22,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:22,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010748466] [2024-06-28 01:29:22,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:22,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:22,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:22,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:22,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:22,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:22,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 314 transitions, 5155 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:22,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:22,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:22,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:23,245 INFO L124 PetriNetUnfolderBase]: 1492/2992 cut-off events. [2024-06-28 01:29:23,245 INFO L125 PetriNetUnfolderBase]: For 43061/43069 co-relation queries the response was YES. [2024-06-28 01:29:23,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18371 conditions, 2992 events. 1492/2992 cut-off events. For 43061/43069 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 20691 event pairs, 424 based on Foata normal form. 10/2771 useless extension candidates. Maximal degree in co-relation 18277. Up to 2054 conditions per place. [2024-06-28 01:29:23,275 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 211 selfloop transitions, 132 changer transitions 0/351 dead transitions. [2024-06-28 01:29:23,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 351 transitions, 6149 flow [2024-06-28 01:29:23,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:29:23,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:29:23,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 01:29:23,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48055555555555557 [2024-06-28 01:29:23,277 INFO L175 Difference]: Start difference. First operand has 196 places, 314 transitions, 5155 flow. Second operand 10 states and 173 transitions. [2024-06-28 01:29:23,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 351 transitions, 6149 flow [2024-06-28 01:29:23,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 351 transitions, 5947 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 01:29:23,510 INFO L231 Difference]: Finished difference. Result has 201 places, 320 transitions, 5337 flow [2024-06-28 01:29:23,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4971, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5337, PETRI_PLACES=201, PETRI_TRANSITIONS=320} [2024-06-28 01:29:23,511 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 161 predicate places. [2024-06-28 01:29:23,511 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 320 transitions, 5337 flow [2024-06-28 01:29:23,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:23,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:23,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:23,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:29:23,511 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:23,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:23,512 INFO L85 PathProgramCache]: Analyzing trace with hash -698358187, now seen corresponding path program 3 times [2024-06-28 01:29:23,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:23,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067183381] [2024-06-28 01:29:23,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:23,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:24,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:24,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:24,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067183381] [2024-06-28 01:29:24,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067183381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:24,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:24,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:24,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900251690] [2024-06-28 01:29:24,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:24,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:24,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:24,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:24,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:24,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:24,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 320 transitions, 5337 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:24,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:24,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:24,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:24,727 INFO L124 PetriNetUnfolderBase]: 1489/2996 cut-off events. [2024-06-28 01:29:24,727 INFO L125 PetriNetUnfolderBase]: For 42769/42777 co-relation queries the response was YES. [2024-06-28 01:29:24,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18508 conditions, 2996 events. 1489/2996 cut-off events. For 42769/42777 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 20834 event pairs, 438 based on Foata normal form. 10/2773 useless extension candidates. Maximal degree in co-relation 18411. Up to 2275 conditions per place. [2024-06-28 01:29:24,750 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 254 selfloop transitions, 81 changer transitions 0/343 dead transitions. [2024-06-28 01:29:24,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 343 transitions, 6107 flow [2024-06-28 01:29:24,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:29:24,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:29:24,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 01:29:24,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527777777777778 [2024-06-28 01:29:24,751 INFO L175 Difference]: Start difference. First operand has 201 places, 320 transitions, 5337 flow. Second operand 10 states and 163 transitions. [2024-06-28 01:29:24,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 343 transitions, 6107 flow [2024-06-28 01:29:24,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 343 transitions, 6020 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:29:24,913 INFO L231 Difference]: Finished difference. Result has 207 places, 320 transitions, 5416 flow [2024-06-28 01:29:24,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5250, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5416, PETRI_PLACES=207, PETRI_TRANSITIONS=320} [2024-06-28 01:29:24,914 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 167 predicate places. [2024-06-28 01:29:24,914 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 320 transitions, 5416 flow [2024-06-28 01:29:24,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:24,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:24,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:24,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:29:24,915 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:24,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:24,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1484180634, now seen corresponding path program 1 times [2024-06-28 01:29:24,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:24,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721515450] [2024-06-28 01:29:24,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:24,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:25,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:25,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:25,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721515450] [2024-06-28 01:29:25,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721515450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:25,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:25,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:25,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391876542] [2024-06-28 01:29:25,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:25,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:25,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:25,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:25,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:25,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:25,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 320 transitions, 5416 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:25,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:25,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:25,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:26,368 INFO L124 PetriNetUnfolderBase]: 1574/3137 cut-off events. [2024-06-28 01:29:26,368 INFO L125 PetriNetUnfolderBase]: For 45919/45927 co-relation queries the response was YES. [2024-06-28 01:29:26,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19665 conditions, 3137 events. 1574/3137 cut-off events. For 45919/45927 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 21826 event pairs, 408 based on Foata normal form. 10/2884 useless extension candidates. Maximal degree in co-relation 19566. Up to 2062 conditions per place. [2024-06-28 01:29:26,394 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 211 selfloop transitions, 160 changer transitions 0/379 dead transitions. [2024-06-28 01:29:26,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 379 transitions, 6750 flow [2024-06-28 01:29:26,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:29:26,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:29:26,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 01:29:26,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:29:26,395 INFO L175 Difference]: Start difference. First operand has 207 places, 320 transitions, 5416 flow. Second operand 10 states and 170 transitions. [2024-06-28 01:29:26,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 379 transitions, 6750 flow [2024-06-28 01:29:26,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 379 transitions, 6672 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 01:29:26,587 INFO L231 Difference]: Finished difference. Result has 214 places, 350 transitions, 6188 flow [2024-06-28 01:29:26,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5338, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6188, PETRI_PLACES=214, PETRI_TRANSITIONS=350} [2024-06-28 01:29:26,588 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 174 predicate places. [2024-06-28 01:29:26,588 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 350 transitions, 6188 flow [2024-06-28 01:29:26,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:26,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:26,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:26,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:29:26,588 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:26,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:26,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1125942576, now seen corresponding path program 2 times [2024-06-28 01:29:26,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:26,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158676251] [2024-06-28 01:29:26,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:26,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:27,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:27,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:27,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158676251] [2024-06-28 01:29:27,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158676251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:27,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:27,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:27,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980257744] [2024-06-28 01:29:27,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:27,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:27,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:27,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:27,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:27,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:27,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 350 transitions, 6188 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:27,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:27,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:27,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:28,065 INFO L124 PetriNetUnfolderBase]: 1593/3173 cut-off events. [2024-06-28 01:29:28,065 INFO L125 PetriNetUnfolderBase]: For 51099/51112 co-relation queries the response was YES. [2024-06-28 01:29:28,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20813 conditions, 3173 events. 1593/3173 cut-off events. For 51099/51112 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 22114 event pairs, 394 based on Foata normal form. 15/2930 useless extension candidates. Maximal degree in co-relation 20711. Up to 2265 conditions per place. [2024-06-28 01:29:28,093 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 253 selfloop transitions, 121 changer transitions 0/382 dead transitions. [2024-06-28 01:29:28,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 382 transitions, 7160 flow [2024-06-28 01:29:28,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:29:28,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:29:28,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 01:29:28,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:29:28,095 INFO L175 Difference]: Start difference. First operand has 214 places, 350 transitions, 6188 flow. Second operand 10 states and 170 transitions. [2024-06-28 01:29:28,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 382 transitions, 7160 flow [2024-06-28 01:29:28,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 382 transitions, 7122 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 01:29:28,342 INFO L231 Difference]: Finished difference. Result has 221 places, 354 transitions, 6486 flow [2024-06-28 01:29:28,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6152, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6486, PETRI_PLACES=221, PETRI_TRANSITIONS=354} [2024-06-28 01:29:28,343 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 181 predicate places. [2024-06-28 01:29:28,343 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 354 transitions, 6486 flow [2024-06-28 01:29:28,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:28,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:28,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:28,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:29:28,343 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:28,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:28,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1571016439, now seen corresponding path program 4 times [2024-06-28 01:29:28,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:28,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081476434] [2024-06-28 01:29:28,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:28,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:28,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:28,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:28,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081476434] [2024-06-28 01:29:28,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081476434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:28,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:28,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:28,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959971391] [2024-06-28 01:29:28,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:28,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:28,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:28,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:28,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:29,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:29,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 354 transitions, 6486 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:29,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:29,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:29,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:29,822 INFO L124 PetriNetUnfolderBase]: 1610/3212 cut-off events. [2024-06-28 01:29:29,822 INFO L125 PetriNetUnfolderBase]: For 54766/54779 co-relation queries the response was YES. [2024-06-28 01:29:29,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21381 conditions, 3212 events. 1610/3212 cut-off events. For 54766/54779 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 22483 event pairs, 473 based on Foata normal form. 15/2967 useless extension candidates. Maximal degree in co-relation 21276. Up to 2536 conditions per place. [2024-06-28 01:29:29,853 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 310 selfloop transitions, 59 changer transitions 0/377 dead transitions. [2024-06-28 01:29:29,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 377 transitions, 7346 flow [2024-06-28 01:29:29,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:29:29,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:29:29,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 01:29:29,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 01:29:29,854 INFO L175 Difference]: Start difference. First operand has 221 places, 354 transitions, 6486 flow. Second operand 10 states and 162 transitions. [2024-06-28 01:29:29,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 377 transitions, 7346 flow [2024-06-28 01:29:30,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 377 transitions, 7014 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 01:29:30,091 INFO L231 Difference]: Finished difference. Result has 223 places, 355 transitions, 6292 flow [2024-06-28 01:29:30,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6154, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6292, PETRI_PLACES=223, PETRI_TRANSITIONS=355} [2024-06-28 01:29:30,091 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 183 predicate places. [2024-06-28 01:29:30,092 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 355 transitions, 6292 flow [2024-06-28 01:29:30,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:30,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:30,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:30,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:29:30,092 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:30,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:30,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1570868569, now seen corresponding path program 5 times [2024-06-28 01:29:30,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:30,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796746654] [2024-06-28 01:29:30,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:30,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:30,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:30,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:30,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796746654] [2024-06-28 01:29:30,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796746654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:30,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:30,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:30,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015054805] [2024-06-28 01:29:30,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:30,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:30,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:30,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:30,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:30,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:30,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 355 transitions, 6292 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:30,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:30,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:30,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:31,766 INFO L124 PetriNetUnfolderBase]: 1762/3578 cut-off events. [2024-06-28 01:29:31,766 INFO L125 PetriNetUnfolderBase]: For 68606/68619 co-relation queries the response was YES. [2024-06-28 01:29:31,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23005 conditions, 3578 events. 1762/3578 cut-off events. For 68606/68619 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 25936 event pairs, 518 based on Foata normal form. 15/3312 useless extension candidates. Maximal degree in co-relation 22899. Up to 2376 conditions per place. [2024-06-28 01:29:31,800 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 290 selfloop transitions, 96 changer transitions 0/394 dead transitions. [2024-06-28 01:29:31,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 394 transitions, 7366 flow [2024-06-28 01:29:31,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:29:31,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:29:31,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-28 01:29:31,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:29:31,802 INFO L175 Difference]: Start difference. First operand has 223 places, 355 transitions, 6292 flow. Second operand 10 states and 180 transitions. [2024-06-28 01:29:31,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 394 transitions, 7366 flow [2024-06-28 01:29:32,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 394 transitions, 7260 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 01:29:32,081 INFO L231 Difference]: Finished difference. Result has 228 places, 358 transitions, 6445 flow [2024-06-28 01:29:32,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6186, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6445, PETRI_PLACES=228, PETRI_TRANSITIONS=358} [2024-06-28 01:29:32,082 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 188 predicate places. [2024-06-28 01:29:32,082 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 358 transitions, 6445 flow [2024-06-28 01:29:32,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:32,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:32,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:32,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:29:32,083 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:32,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:32,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1570872289, now seen corresponding path program 6 times [2024-06-28 01:29:32,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:32,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860292902] [2024-06-28 01:29:32,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:32,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:32,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:32,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:32,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860292902] [2024-06-28 01:29:32,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860292902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:32,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:32,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:32,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993174601] [2024-06-28 01:29:32,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:32,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:32,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:32,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:32,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:32,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:32,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 358 transitions, 6445 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:32,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:32,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:32,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:33,808 INFO L124 PetriNetUnfolderBase]: 1740/3542 cut-off events. [2024-06-28 01:29:33,808 INFO L125 PetriNetUnfolderBase]: For 70595/70608 co-relation queries the response was YES. [2024-06-28 01:29:33,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22513 conditions, 3542 events. 1740/3542 cut-off events. For 70595/70608 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 25704 event pairs, 514 based on Foata normal form. 29/3294 useless extension candidates. Maximal degree in co-relation 22405. Up to 2442 conditions per place. [2024-06-28 01:29:33,842 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 286 selfloop transitions, 96 changer transitions 0/390 dead transitions. [2024-06-28 01:29:33,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 390 transitions, 7367 flow [2024-06-28 01:29:33,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:29:33,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:29:33,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-28 01:29:33,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:29:33,843 INFO L175 Difference]: Start difference. First operand has 228 places, 358 transitions, 6445 flow. Second operand 11 states and 187 transitions. [2024-06-28 01:29:33,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 390 transitions, 7367 flow [2024-06-28 01:29:34,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 390 transitions, 7233 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 01:29:34,103 INFO L231 Difference]: Finished difference. Result has 233 places, 358 transitions, 6514 flow [2024-06-28 01:29:34,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6311, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6514, PETRI_PLACES=233, PETRI_TRANSITIONS=358} [2024-06-28 01:29:34,104 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 193 predicate places. [2024-06-28 01:29:34,104 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 358 transitions, 6514 flow [2024-06-28 01:29:34,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:34,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:34,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:34,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:29:34,104 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:34,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:34,104 INFO L85 PathProgramCache]: Analyzing trace with hash 710213976, now seen corresponding path program 3 times [2024-06-28 01:29:34,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:34,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578380732] [2024-06-28 01:29:34,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:34,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:34,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:34,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:34,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578380732] [2024-06-28 01:29:34,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578380732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:34,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:34,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:34,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166987941] [2024-06-28 01:29:34,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:34,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:34,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:34,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:34,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:34,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:34,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 358 transitions, 6514 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:34,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:34,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:34,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:35,813 INFO L124 PetriNetUnfolderBase]: 1753/3544 cut-off events. [2024-06-28 01:29:35,813 INFO L125 PetriNetUnfolderBase]: For 60194/60207 co-relation queries the response was YES. [2024-06-28 01:29:35,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22769 conditions, 3544 events. 1753/3544 cut-off events. For 60194/60207 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 25728 event pairs, 492 based on Foata normal form. 15/3274 useless extension candidates. Maximal degree in co-relation 22660. Up to 2584 conditions per place. [2024-06-28 01:29:35,848 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 262 selfloop transitions, 117 changer transitions 0/387 dead transitions. [2024-06-28 01:29:35,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 387 transitions, 7460 flow [2024-06-28 01:29:35,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:29:35,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:29:35,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 01:29:35,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46944444444444444 [2024-06-28 01:29:35,849 INFO L175 Difference]: Start difference. First operand has 233 places, 358 transitions, 6514 flow. Second operand 10 states and 169 transitions. [2024-06-28 01:29:35,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 387 transitions, 7460 flow [2024-06-28 01:29:36,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 387 transitions, 7257 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:29:36,221 INFO L231 Difference]: Finished difference. Result has 234 places, 361 transitions, 6629 flow [2024-06-28 01:29:36,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6311, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6629, PETRI_PLACES=234, PETRI_TRANSITIONS=361} [2024-06-28 01:29:36,222 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 194 predicate places. [2024-06-28 01:29:36,222 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 361 transitions, 6629 flow [2024-06-28 01:29:36,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:36,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:36,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:36,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:29:36,222 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:36,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:36,223 INFO L85 PathProgramCache]: Analyzing trace with hash -310815211, now seen corresponding path program 7 times [2024-06-28 01:29:36,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:36,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794210723] [2024-06-28 01:29:36,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:36,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:36,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:36,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:36,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794210723] [2024-06-28 01:29:36,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794210723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:36,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:36,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:36,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92771672] [2024-06-28 01:29:36,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:36,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:36,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:36,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:36,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:36,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:36,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 361 transitions, 6629 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:36,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:36,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:36,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:37,601 INFO L124 PetriNetUnfolderBase]: 1859/3779 cut-off events. [2024-06-28 01:29:37,601 INFO L125 PetriNetUnfolderBase]: For 61722/61722 co-relation queries the response was YES. [2024-06-28 01:29:37,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24041 conditions, 3779 events. 1859/3779 cut-off events. For 61722/61722 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 27736 event pairs, 449 based on Foata normal form. 2/3490 useless extension candidates. Maximal degree in co-relation 23930. Up to 1730 conditions per place. [2024-06-28 01:29:37,643 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 290 selfloop transitions, 107 changer transitions 0/405 dead transitions. [2024-06-28 01:29:37,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 405 transitions, 7803 flow [2024-06-28 01:29:37,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:37,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:37,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 01:29:37,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-28 01:29:37,644 INFO L175 Difference]: Start difference. First operand has 234 places, 361 transitions, 6629 flow. Second operand 9 states and 156 transitions. [2024-06-28 01:29:37,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 405 transitions, 7803 flow [2024-06-28 01:29:37,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 405 transitions, 7633 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 01:29:37,936 INFO L231 Difference]: Finished difference. Result has 237 places, 372 transitions, 6873 flow [2024-06-28 01:29:37,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6459, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6873, PETRI_PLACES=237, PETRI_TRANSITIONS=372} [2024-06-28 01:29:37,937 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 197 predicate places. [2024-06-28 01:29:37,937 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 372 transitions, 6873 flow [2024-06-28 01:29:37,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:37,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:37,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:37,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:29:37,939 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:37,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:37,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1465944283, now seen corresponding path program 8 times [2024-06-28 01:29:37,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:37,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813735207] [2024-06-28 01:29:37,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:37,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:38,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:38,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:38,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813735207] [2024-06-28 01:29:38,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813735207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:38,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:38,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:38,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421459658] [2024-06-28 01:29:38,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:38,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:38,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:38,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:38,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:38,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:38,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 372 transitions, 6873 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:38,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:38,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:38,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:39,326 INFO L124 PetriNetUnfolderBase]: 1926/3883 cut-off events. [2024-06-28 01:29:39,326 INFO L125 PetriNetUnfolderBase]: For 69600/69600 co-relation queries the response was YES. [2024-06-28 01:29:39,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25340 conditions, 3883 events. 1926/3883 cut-off events. For 69600/69600 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 28749 event pairs, 541 based on Foata normal form. 2/3589 useless extension candidates. Maximal degree in co-relation 25228. Up to 2119 conditions per place. [2024-06-28 01:29:39,363 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 284 selfloop transitions, 116 changer transitions 0/408 dead transitions. [2024-06-28 01:29:39,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 408 transitions, 8006 flow [2024-06-28 01:29:39,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:39,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:39,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 01:29:39,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-28 01:29:39,364 INFO L175 Difference]: Start difference. First operand has 237 places, 372 transitions, 6873 flow. Second operand 9 states and 159 transitions. [2024-06-28 01:29:39,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 408 transitions, 8006 flow [2024-06-28 01:29:39,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 408 transitions, 7787 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-28 01:29:39,666 INFO L231 Difference]: Finished difference. Result has 241 places, 377 transitions, 7001 flow [2024-06-28 01:29:39,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6697, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7001, PETRI_PLACES=241, PETRI_TRANSITIONS=377} [2024-06-28 01:29:39,667 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 201 predicate places. [2024-06-28 01:29:39,667 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 377 transitions, 7001 flow [2024-06-28 01:29:39,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:39,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:39,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:39,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:29:39,667 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:39,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:39,667 INFO L85 PathProgramCache]: Analyzing trace with hash 730090543, now seen corresponding path program 9 times [2024-06-28 01:29:39,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:39,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365002222] [2024-06-28 01:29:39,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:39,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:40,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:40,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:40,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365002222] [2024-06-28 01:29:40,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365002222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:40,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:40,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:40,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149031778] [2024-06-28 01:29:40,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:40,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:40,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:40,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:40,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:40,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:40,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 377 transitions, 7001 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:40,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:40,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:40,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:41,236 INFO L124 PetriNetUnfolderBase]: 1953/4010 cut-off events. [2024-06-28 01:29:41,236 INFO L125 PetriNetUnfolderBase]: For 71975/71975 co-relation queries the response was YES. [2024-06-28 01:29:41,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25571 conditions, 4010 events. 1953/4010 cut-off events. For 71975/71975 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 30399 event pairs, 687 based on Foata normal form. 2/3694 useless extension candidates. Maximal degree in co-relation 25458. Up to 2909 conditions per place. [2024-06-28 01:29:41,284 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 279 selfloop transitions, 112 changer transitions 0/399 dead transitions. [2024-06-28 01:29:41,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 399 transitions, 7903 flow [2024-06-28 01:29:41,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:41,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:41,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 01:29:41,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:29:41,285 INFO L175 Difference]: Start difference. First operand has 241 places, 377 transitions, 7001 flow. Second operand 9 states and 153 transitions. [2024-06-28 01:29:41,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 399 transitions, 7903 flow [2024-06-28 01:29:41,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 399 transitions, 7784 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 01:29:41,692 INFO L231 Difference]: Finished difference. Result has 244 places, 379 transitions, 7149 flow [2024-06-28 01:29:41,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6882, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7149, PETRI_PLACES=244, PETRI_TRANSITIONS=379} [2024-06-28 01:29:41,692 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 204 predicate places. [2024-06-28 01:29:41,692 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 379 transitions, 7149 flow [2024-06-28 01:29:41,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:41,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:41,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:41,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:29:41,693 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:41,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:41,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1853736613, now seen corresponding path program 10 times [2024-06-28 01:29:41,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:41,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129879310] [2024-06-28 01:29:41,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:41,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:42,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:42,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:42,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129879310] [2024-06-28 01:29:42,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129879310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:42,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:42,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:42,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316035228] [2024-06-28 01:29:42,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:42,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:42,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:42,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:42,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:42,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:42,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 379 transitions, 7149 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:42,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:42,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:42,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:43,169 INFO L124 PetriNetUnfolderBase]: 1961/4016 cut-off events. [2024-06-28 01:29:43,169 INFO L125 PetriNetUnfolderBase]: For 70847/70847 co-relation queries the response was YES. [2024-06-28 01:29:43,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25936 conditions, 4016 events. 1961/4016 cut-off events. For 70847/70847 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 30395 event pairs, 625 based on Foata normal form. 2/3702 useless extension candidates. Maximal degree in co-relation 25822. Up to 2685 conditions per place. [2024-06-28 01:29:43,208 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 278 selfloop transitions, 119 changer transitions 0/405 dead transitions. [2024-06-28 01:29:43,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 405 transitions, 8082 flow [2024-06-28 01:29:43,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:43,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:43,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 01:29:43,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-28 01:29:43,209 INFO L175 Difference]: Start difference. First operand has 244 places, 379 transitions, 7149 flow. Second operand 9 states and 156 transitions. [2024-06-28 01:29:43,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 405 transitions, 8082 flow [2024-06-28 01:29:43,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 405 transitions, 7922 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 01:29:43,496 INFO L231 Difference]: Finished difference. Result has 246 places, 380 transitions, 7259 flow [2024-06-28 01:29:43,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6989, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7259, PETRI_PLACES=246, PETRI_TRANSITIONS=380} [2024-06-28 01:29:43,496 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 206 predicate places. [2024-06-28 01:29:43,496 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 380 transitions, 7259 flow [2024-06-28 01:29:43,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:43,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:43,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:43,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:29:43,497 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:43,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:43,497 INFO L85 PathProgramCache]: Analyzing trace with hash 328805928, now seen corresponding path program 4 times [2024-06-28 01:29:43,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:43,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819545078] [2024-06-28 01:29:43,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:43,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:44,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:44,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:44,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819545078] [2024-06-28 01:29:44,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819545078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:44,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:44,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:44,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931596413] [2024-06-28 01:29:44,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:44,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:44,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:44,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:44,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:44,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:44,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 380 transitions, 7259 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:44,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:44,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:44,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:45,305 INFO L124 PetriNetUnfolderBase]: 2070/4225 cut-off events. [2024-06-28 01:29:45,306 INFO L125 PetriNetUnfolderBase]: For 76814/76822 co-relation queries the response was YES. [2024-06-28 01:29:45,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27897 conditions, 4225 events. 2070/4225 cut-off events. For 76814/76822 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 32138 event pairs, 633 based on Foata normal form. 10/3901 useless extension candidates. Maximal degree in co-relation 27783. Up to 2683 conditions per place. [2024-06-28 01:29:45,339 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 212 selfloop transitions, 242 changer transitions 0/462 dead transitions. [2024-06-28 01:29:45,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 462 transitions, 9524 flow [2024-06-28 01:29:45,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:29:45,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:29:45,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-28 01:29:45,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-28 01:29:45,341 INFO L175 Difference]: Start difference. First operand has 246 places, 380 transitions, 7259 flow. Second operand 10 states and 171 transitions. [2024-06-28 01:29:45,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 462 transitions, 9524 flow [2024-06-28 01:29:45,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 462 transitions, 9234 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 01:29:45,633 INFO L231 Difference]: Finished difference. Result has 251 places, 427 transitions, 8658 flow [2024-06-28 01:29:45,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7015, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8658, PETRI_PLACES=251, PETRI_TRANSITIONS=427} [2024-06-28 01:29:45,634 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 211 predicate places. [2024-06-28 01:29:45,634 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 427 transitions, 8658 flow [2024-06-28 01:29:45,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:45,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:45,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:45,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:29:45,635 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:45,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:45,637 INFO L85 PathProgramCache]: Analyzing trace with hash 310395205, now seen corresponding path program 11 times [2024-06-28 01:29:45,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:45,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252788035] [2024-06-28 01:29:45,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:45,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:46,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:46,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:46,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252788035] [2024-06-28 01:29:46,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252788035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:46,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:46,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:46,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562921770] [2024-06-28 01:29:46,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:46,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:46,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:46,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:46,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:46,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:46,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 427 transitions, 8658 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:46,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:46,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:46,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:47,468 INFO L124 PetriNetUnfolderBase]: 2233/4602 cut-off events. [2024-06-28 01:29:47,468 INFO L125 PetriNetUnfolderBase]: For 87244/87245 co-relation queries the response was YES. [2024-06-28 01:29:47,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30638 conditions, 4602 events. 2233/4602 cut-off events. For 87244/87245 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 35933 event pairs, 767 based on Foata normal form. 3/4240 useless extension candidates. Maximal degree in co-relation 30521. Up to 3072 conditions per place. [2024-06-28 01:29:47,511 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 336 selfloop transitions, 130 changer transitions 0/474 dead transitions. [2024-06-28 01:29:47,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 474 transitions, 10005 flow [2024-06-28 01:29:47,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:29:47,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:29:47,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-28 01:29:47,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-06-28 01:29:47,513 INFO L175 Difference]: Start difference. First operand has 251 places, 427 transitions, 8658 flow. Second operand 10 states and 184 transitions. [2024-06-28 01:29:47,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 474 transitions, 10005 flow [2024-06-28 01:29:47,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 474 transitions, 9485 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 01:29:47,861 INFO L231 Difference]: Finished difference. Result has 255 places, 433 transitions, 8559 flow [2024-06-28 01:29:47,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8142, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8559, PETRI_PLACES=255, PETRI_TRANSITIONS=433} [2024-06-28 01:29:47,862 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 215 predicate places. [2024-06-28 01:29:47,862 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 433 transitions, 8559 flow [2024-06-28 01:29:47,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:47,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:47,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:47,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:29:47,862 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:47,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:47,863 INFO L85 PathProgramCache]: Analyzing trace with hash 310398925, now seen corresponding path program 12 times [2024-06-28 01:29:47,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:47,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818824242] [2024-06-28 01:29:47,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:47,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:48,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:48,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:48,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818824242] [2024-06-28 01:29:48,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818824242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:48,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:48,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:48,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653697517] [2024-06-28 01:29:48,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:48,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:48,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:48,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:48,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:48,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:48,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 433 transitions, 8559 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:48,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:48,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:48,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:49,869 INFO L124 PetriNetUnfolderBase]: 2348/4901 cut-off events. [2024-06-28 01:29:49,869 INFO L125 PetriNetUnfolderBase]: For 100722/100723 co-relation queries the response was YES. [2024-06-28 01:29:49,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31501 conditions, 4901 events. 2348/4901 cut-off events. For 100722/100723 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 38993 event pairs, 846 based on Foata normal form. 15/4527 useless extension candidates. Maximal degree in co-relation 31383. Up to 3503 conditions per place. [2024-06-28 01:29:49,921 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 339 selfloop transitions, 127 changer transitions 0/474 dead transitions. [2024-06-28 01:29:49,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 474 transitions, 9747 flow [2024-06-28 01:29:49,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:29:49,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:29:49,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-28 01:29:49,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4898989898989899 [2024-06-28 01:29:49,922 INFO L175 Difference]: Start difference. First operand has 255 places, 433 transitions, 8559 flow. Second operand 11 states and 194 transitions. [2024-06-28 01:29:49,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 474 transitions, 9747 flow [2024-06-28 01:29:50,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 474 transitions, 9602 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 01:29:50,258 INFO L231 Difference]: Finished difference. Result has 261 places, 435 transitions, 8729 flow [2024-06-28 01:29:50,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8422, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8729, PETRI_PLACES=261, PETRI_TRANSITIONS=435} [2024-06-28 01:29:50,259 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 221 predicate places. [2024-06-28 01:29:50,259 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 435 transitions, 8729 flow [2024-06-28 01:29:50,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:50,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:50,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:50,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:29:50,259 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:50,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:50,260 INFO L85 PathProgramCache]: Analyzing trace with hash 310399080, now seen corresponding path program 5 times [2024-06-28 01:29:50,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:50,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934855642] [2024-06-28 01:29:50,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:50,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:50,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:50,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:50,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934855642] [2024-06-28 01:29:50,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934855642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:50,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:50,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:50,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224351306] [2024-06-28 01:29:50,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:50,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:50,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:50,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:50,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:51,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:51,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 435 transitions, 8729 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:51,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:51,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:51,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:52,335 INFO L124 PetriNetUnfolderBase]: 2398/4949 cut-off events. [2024-06-28 01:29:52,335 INFO L125 PetriNetUnfolderBase]: For 90799/90800 co-relation queries the response was YES. [2024-06-28 01:29:52,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32331 conditions, 4949 events. 2398/4949 cut-off events. For 90799/90800 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 39269 event pairs, 767 based on Foata normal form. 3/4525 useless extension candidates. Maximal degree in co-relation 32211. Up to 3611 conditions per place. [2024-06-28 01:29:52,380 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 304 selfloop transitions, 175 changer transitions 0/487 dead transitions. [2024-06-28 01:29:52,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 487 transitions, 10296 flow [2024-06-28 01:29:52,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:29:52,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:29:52,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-28 01:29:52,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-28 01:29:52,381 INFO L175 Difference]: Start difference. First operand has 261 places, 435 transitions, 8729 flow. Second operand 10 states and 175 transitions. [2024-06-28 01:29:52,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 487 transitions, 10296 flow [2024-06-28 01:29:52,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 487 transitions, 10048 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 01:29:52,712 INFO L231 Difference]: Finished difference. Result has 264 places, 459 transitions, 9372 flow [2024-06-28 01:29:52,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8481, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9372, PETRI_PLACES=264, PETRI_TRANSITIONS=459} [2024-06-28 01:29:52,713 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 224 predicate places. [2024-06-28 01:29:52,713 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 459 transitions, 9372 flow [2024-06-28 01:29:52,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:52,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:52,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:52,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:29:52,714 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:52,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:52,714 INFO L85 PathProgramCache]: Analyzing trace with hash 315905455, now seen corresponding path program 13 times [2024-06-28 01:29:52,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:52,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088306482] [2024-06-28 01:29:52,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:52,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:53,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:53,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088306482] [2024-06-28 01:29:53,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088306482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:53,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:53,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:29:53,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485451199] [2024-06-28 01:29:53,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:53,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:29:53,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:53,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:29:53,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:29:53,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:53,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 459 transitions, 9372 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:53,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:53,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:53,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:54,994 INFO L124 PetriNetUnfolderBase]: 2446/5125 cut-off events. [2024-06-28 01:29:54,995 INFO L125 PetriNetUnfolderBase]: For 95265/95272 co-relation queries the response was YES. [2024-06-28 01:29:55,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32721 conditions, 5125 events. 2446/5125 cut-off events. For 95265/95272 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 41326 event pairs, 884 based on Foata normal form. 21/4720 useless extension candidates. Maximal degree in co-relation 32598. Up to 3741 conditions per place. [2024-06-28 01:29:55,046 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 393 selfloop transitions, 94 changer transitions 0/495 dead transitions. [2024-06-28 01:29:55,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 495 transitions, 10559 flow [2024-06-28 01:29:55,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:29:55,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:29:55,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-28 01:29:55,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47474747474747475 [2024-06-28 01:29:55,047 INFO L175 Difference]: Start difference. First operand has 264 places, 459 transitions, 9372 flow. Second operand 11 states and 188 transitions. [2024-06-28 01:29:55,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 495 transitions, 10559 flow [2024-06-28 01:29:55,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 495 transitions, 10469 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-28 01:29:55,362 INFO L231 Difference]: Finished difference. Result has 272 places, 460 transitions, 9505 flow [2024-06-28 01:29:55,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9286, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9505, PETRI_PLACES=272, PETRI_TRANSITIONS=460} [2024-06-28 01:29:55,363 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 232 predicate places. [2024-06-28 01:29:55,363 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 460 transitions, 9505 flow [2024-06-28 01:29:55,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:55,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:55,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:55,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:29:55,363 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:55,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:55,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1228298280, now seen corresponding path program 6 times [2024-06-28 01:29:55,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:55,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66401176] [2024-06-28 01:29:55,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:55,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:56,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:56,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:56,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66401176] [2024-06-28 01:29:56,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66401176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:56,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:56,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:29:56,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316308349] [2024-06-28 01:29:56,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:56,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:29:56,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:56,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:29:56,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:29:56,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:56,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 460 transitions, 9505 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:56,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:56,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:56,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:57,920 INFO L124 PetriNetUnfolderBase]: 2478/5154 cut-off events. [2024-06-28 01:29:57,920 INFO L125 PetriNetUnfolderBase]: For 85574/85581 co-relation queries the response was YES. [2024-06-28 01:29:57,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33427 conditions, 5154 events. 2478/5154 cut-off events. For 85574/85581 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 41447 event pairs, 864 based on Foata normal form. 9/4723 useless extension candidates. Maximal degree in co-relation 33302. Up to 3875 conditions per place. [2024-06-28 01:29:57,989 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 360 selfloop transitions, 130 changer transitions 0/498 dead transitions. [2024-06-28 01:29:57,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 498 transitions, 10854 flow [2024-06-28 01:29:57,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:29:57,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:29:57,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 197 transitions. [2024-06-28 01:29:57,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45601851851851855 [2024-06-28 01:29:57,998 INFO L175 Difference]: Start difference. First operand has 272 places, 460 transitions, 9505 flow. Second operand 12 states and 197 transitions. [2024-06-28 01:29:57,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 498 transitions, 10854 flow [2024-06-28 01:29:58,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 498 transitions, 10714 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 01:29:58,479 INFO L231 Difference]: Finished difference. Result has 277 places, 469 transitions, 9882 flow [2024-06-28 01:29:58,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9371, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9882, PETRI_PLACES=277, PETRI_TRANSITIONS=469} [2024-06-28 01:29:58,480 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 237 predicate places. [2024-06-28 01:29:58,480 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 469 transitions, 9882 flow [2024-06-28 01:29:58,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:58,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:58,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:58,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:29:58,481 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:58,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:58,481 INFO L85 PathProgramCache]: Analyzing trace with hash 587599530, now seen corresponding path program 7 times [2024-06-28 01:29:58,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:58,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126061203] [2024-06-28 01:29:58,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:58,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:59,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:59,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:59,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126061203] [2024-06-28 01:29:59,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126061203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:59,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:59,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:59,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971026893] [2024-06-28 01:29:59,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:59,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:59,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:59,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:59,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:59,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:29:59,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 469 transitions, 9882 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:59,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:59,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:29:59,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:00,534 INFO L124 PetriNetUnfolderBase]: 2479/5146 cut-off events. [2024-06-28 01:30:00,534 INFO L125 PetriNetUnfolderBase]: For 82805/82806 co-relation queries the response was YES. [2024-06-28 01:30:00,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33577 conditions, 5146 events. 2479/5146 cut-off events. For 82805/82806 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 41268 event pairs, 803 based on Foata normal form. 3/4695 useless extension candidates. Maximal degree in co-relation 33450. Up to 3843 conditions per place. [2024-06-28 01:30:00,580 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 342 selfloop transitions, 149 changer transitions 0/499 dead transitions. [2024-06-28 01:30:00,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 499 transitions, 11060 flow [2024-06-28 01:30:00,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:30:00,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:30:00,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 01:30:00,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48055555555555557 [2024-06-28 01:30:00,582 INFO L175 Difference]: Start difference. First operand has 277 places, 469 transitions, 9882 flow. Second operand 10 states and 173 transitions. [2024-06-28 01:30:00,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 499 transitions, 11060 flow [2024-06-28 01:30:00,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 499 transitions, 10726 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-28 01:30:00,945 INFO L231 Difference]: Finished difference. Result has 279 places, 471 transitions, 9907 flow [2024-06-28 01:30:00,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9562, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9907, PETRI_PLACES=279, PETRI_TRANSITIONS=471} [2024-06-28 01:30:00,947 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 239 predicate places. [2024-06-28 01:30:00,947 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 471 transitions, 9907 flow [2024-06-28 01:30:00,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:00,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:00,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:00,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:30:00,948 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:00,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:00,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1842231081, now seen corresponding path program 14 times [2024-06-28 01:30:00,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:00,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780935963] [2024-06-28 01:30:00,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:00,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:01,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:01,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:01,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780935963] [2024-06-28 01:30:01,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780935963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:01,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:01,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:30:01,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818642264] [2024-06-28 01:30:01,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:01,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:30:01,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:01,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:30:01,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:30:01,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:30:01,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 471 transitions, 9907 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:01,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:01,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:30:01,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:02,785 INFO L124 PetriNetUnfolderBase]: 2506/5208 cut-off events. [2024-06-28 01:30:02,785 INFO L125 PetriNetUnfolderBase]: For 84194/84198 co-relation queries the response was YES. [2024-06-28 01:30:02,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33797 conditions, 5208 events. 2506/5208 cut-off events. For 84194/84198 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 41337 event pairs, 670 based on Foata normal form. 6/4793 useless extension candidates. Maximal degree in co-relation 33669. Up to 2575 conditions per place. [2024-06-28 01:30:02,838 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 325 selfloop transitions, 174 changer transitions 0/507 dead transitions. [2024-06-28 01:30:02,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 507 transitions, 11220 flow [2024-06-28 01:30:02,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:02,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:02,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 01:30:02,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47530864197530864 [2024-06-28 01:30:02,845 INFO L175 Difference]: Start difference. First operand has 279 places, 471 transitions, 9907 flow. Second operand 9 states and 154 transitions. [2024-06-28 01:30:02,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 507 transitions, 11220 flow [2024-06-28 01:30:03,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 507 transitions, 10894 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 01:30:03,216 INFO L231 Difference]: Finished difference. Result has 280 places, 473 transitions, 9974 flow [2024-06-28 01:30:03,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9581, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9974, PETRI_PLACES=280, PETRI_TRANSITIONS=473} [2024-06-28 01:30:03,216 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 240 predicate places. [2024-06-28 01:30:03,217 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 473 transitions, 9974 flow [2024-06-28 01:30:03,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:03,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:03,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:03,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:30:03,217 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:03,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:03,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1286014972, now seen corresponding path program 8 times [2024-06-28 01:30:03,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:03,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055182551] [2024-06-28 01:30:03,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:03,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:03,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:03,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:03,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055182551] [2024-06-28 01:30:03,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055182551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:03,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:03,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:30:03,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022165267] [2024-06-28 01:30:03,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:03,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:30:03,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:03,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:30:03,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:30:03,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:30:03,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 473 transitions, 9974 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:03,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:03,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:30:03,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:05,121 INFO L124 PetriNetUnfolderBase]: 2532/5263 cut-off events. [2024-06-28 01:30:05,121 INFO L125 PetriNetUnfolderBase]: For 88379/88383 co-relation queries the response was YES. [2024-06-28 01:30:05,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34645 conditions, 5263 events. 2532/5263 cut-off events. For 88379/88383 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 42483 event pairs, 822 based on Foata normal form. 6/4814 useless extension candidates. Maximal degree in co-relation 34516. Up to 3471 conditions per place. [2024-06-28 01:30:05,175 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 218 selfloop transitions, 283 changer transitions 0/509 dead transitions. [2024-06-28 01:30:05,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 509 transitions, 11376 flow [2024-06-28 01:30:05,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:05,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:05,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 01:30:05,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:30:05,176 INFO L175 Difference]: Start difference. First operand has 280 places, 473 transitions, 9974 flow. Second operand 9 states and 153 transitions. [2024-06-28 01:30:05,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 509 transitions, 11376 flow [2024-06-28 01:30:05,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 509 transitions, 11223 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 01:30:05,579 INFO L231 Difference]: Finished difference. Result has 284 places, 481 transitions, 10554 flow [2024-06-28 01:30:05,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9827, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10554, PETRI_PLACES=284, PETRI_TRANSITIONS=481} [2024-06-28 01:30:05,580 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 244 predicate places. [2024-06-28 01:30:05,580 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 481 transitions, 10554 flow [2024-06-28 01:30:05,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:05,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:05,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:05,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:30:05,581 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:05,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:05,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1286014817, now seen corresponding path program 15 times [2024-06-28 01:30:05,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:05,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397596125] [2024-06-28 01:30:05,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:05,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:06,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:06,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:06,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397596125] [2024-06-28 01:30:06,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397596125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:06,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:06,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:30:06,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325406990] [2024-06-28 01:30:06,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:06,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:30:06,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:06,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:30:06,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:30:06,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:30:06,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 481 transitions, 10554 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:06,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:06,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:30:06,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:07,804 INFO L124 PetriNetUnfolderBase]: 2753/5834 cut-off events. [2024-06-28 01:30:07,804 INFO L125 PetriNetUnfolderBase]: For 112079/112086 co-relation queries the response was YES. [2024-06-28 01:30:07,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36973 conditions, 5834 events. 2753/5834 cut-off events. For 112079/112086 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 48707 event pairs, 943 based on Foata normal form. 23/5382 useless extension candidates. Maximal degree in co-relation 36843. Up to 3319 conditions per place. [2024-06-28 01:30:07,867 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 221 selfloop transitions, 303 changer transitions 0/532 dead transitions. [2024-06-28 01:30:07,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 532 transitions, 12035 flow [2024-06-28 01:30:07,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:30:07,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:30:07,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-28 01:30:07,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797979797979798 [2024-06-28 01:30:07,868 INFO L175 Difference]: Start difference. First operand has 284 places, 481 transitions, 10554 flow. Second operand 11 states and 190 transitions. [2024-06-28 01:30:07,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 532 transitions, 12035 flow [2024-06-28 01:30:08,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 532 transitions, 11665 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 01:30:08,260 INFO L231 Difference]: Finished difference. Result has 288 places, 486 transitions, 10927 flow [2024-06-28 01:30:08,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=10184, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=298, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10927, PETRI_PLACES=288, PETRI_TRANSITIONS=486} [2024-06-28 01:30:08,261 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 248 predicate places. [2024-06-28 01:30:08,261 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 486 transitions, 10927 flow [2024-06-28 01:30:08,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:08,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:08,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:08,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:30:08,262 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:08,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:08,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1286011097, now seen corresponding path program 16 times [2024-06-28 01:30:08,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:08,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94719280] [2024-06-28 01:30:08,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:08,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:08,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:08,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:08,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94719280] [2024-06-28 01:30:08,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94719280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:08,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:08,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:30:08,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869310018] [2024-06-28 01:30:08,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:08,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:30:08,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:08,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:30:08,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:30:09,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:30:09,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 486 transitions, 10927 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:09,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:09,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:30:09,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:10,468 INFO L124 PetriNetUnfolderBase]: 2802/5975 cut-off events. [2024-06-28 01:30:10,469 INFO L125 PetriNetUnfolderBase]: For 97902/97909 co-relation queries the response was YES. [2024-06-28 01:30:10,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37992 conditions, 5975 events. 2802/5975 cut-off events. For 97902/97909 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 50327 event pairs, 876 based on Foata normal form. 9/5492 useless extension candidates. Maximal degree in co-relation 37863. Up to 3010 conditions per place. [2024-06-28 01:30:10,535 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 220 selfloop transitions, 310 changer transitions 0/538 dead transitions. [2024-06-28 01:30:10,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 538 transitions, 12414 flow [2024-06-28 01:30:10,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:30:10,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:30:10,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-28 01:30:10,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5055555555555555 [2024-06-28 01:30:10,537 INFO L175 Difference]: Start difference. First operand has 288 places, 486 transitions, 10927 flow. Second operand 10 states and 182 transitions. [2024-06-28 01:30:10,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 538 transitions, 12414 flow [2024-06-28 01:30:10,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 538 transitions, 11860 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 01:30:10,982 INFO L231 Difference]: Finished difference. Result has 289 places, 490 transitions, 11096 flow [2024-06-28 01:30:10,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=10377, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=306, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11096, PETRI_PLACES=289, PETRI_TRANSITIONS=490} [2024-06-28 01:30:10,983 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 249 predicate places. [2024-06-28 01:30:10,983 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 490 transitions, 11096 flow [2024-06-28 01:30:10,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:10,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:10,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:10,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:30:10,984 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:10,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:10,984 INFO L85 PathProgramCache]: Analyzing trace with hash 282816814, now seen corresponding path program 9 times [2024-06-28 01:30:10,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:10,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712075283] [2024-06-28 01:30:10,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:10,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:11,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:11,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:11,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712075283] [2024-06-28 01:30:11,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712075283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:11,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:11,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:30:11,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178585228] [2024-06-28 01:30:11,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:11,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:30:11,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:11,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:30:11,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:30:11,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:30:11,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 490 transitions, 11096 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:11,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:11,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:30:11,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:13,186 INFO L124 PetriNetUnfolderBase]: 2835/5953 cut-off events. [2024-06-28 01:30:13,186 INFO L125 PetriNetUnfolderBase]: For 97940/97947 co-relation queries the response was YES. [2024-06-28 01:30:13,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38545 conditions, 5953 events. 2835/5953 cut-off events. For 97940/97947 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 49903 event pairs, 992 based on Foata normal form. 9/5449 useless extension candidates. Maximal degree in co-relation 38416. Up to 4460 conditions per place. [2024-06-28 01:30:13,257 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 356 selfloop transitions, 165 changer transitions 0/529 dead transitions. [2024-06-28 01:30:13,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 529 transitions, 12596 flow [2024-06-28 01:30:13,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:13,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:13,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 01:30:13,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4660493827160494 [2024-06-28 01:30:13,258 INFO L175 Difference]: Start difference. First operand has 289 places, 490 transitions, 11096 flow. Second operand 9 states and 151 transitions. [2024-06-28 01:30:13,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 529 transitions, 12596 flow [2024-06-28 01:30:13,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 529 transitions, 11966 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 01:30:13,708 INFO L231 Difference]: Finished difference. Result has 291 places, 502 transitions, 11110 flow [2024-06-28 01:30:13,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=10478, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11110, PETRI_PLACES=291, PETRI_TRANSITIONS=502} [2024-06-28 01:30:13,709 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 251 predicate places. [2024-06-28 01:30:13,709 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 502 transitions, 11110 flow [2024-06-28 01:30:13,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:13,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:13,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:13,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:30:13,709 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:13,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:13,710 INFO L85 PathProgramCache]: Analyzing trace with hash 282672664, now seen corresponding path program 10 times [2024-06-28 01:30:13,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:13,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299096876] [2024-06-28 01:30:13,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:13,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:14,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:14,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:14,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299096876] [2024-06-28 01:30:14,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299096876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:14,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:14,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:30:14,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621396846] [2024-06-28 01:30:14,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:14,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:30:14,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:14,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:30:14,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:30:14,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:30:14,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 502 transitions, 11110 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:14,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:14,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:30:14,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:15,919 INFO L124 PetriNetUnfolderBase]: 2858/5988 cut-off events. [2024-06-28 01:30:15,919 INFO L125 PetriNetUnfolderBase]: For 95625/95632 co-relation queries the response was YES. [2024-06-28 01:30:15,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38266 conditions, 5988 events. 2858/5988 cut-off events. For 95625/95632 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 50117 event pairs, 992 based on Foata normal form. 9/5477 useless extension candidates. Maximal degree in co-relation 38135. Up to 4442 conditions per place. [2024-06-28 01:30:15,998 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 344 selfloop transitions, 185 changer transitions 0/537 dead transitions. [2024-06-28 01:30:15,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 537 transitions, 12520 flow [2024-06-28 01:30:15,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:15,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:15,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 01:30:15,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4691358024691358 [2024-06-28 01:30:15,999 INFO L175 Difference]: Start difference. First operand has 291 places, 502 transitions, 11110 flow. Second operand 9 states and 152 transitions. [2024-06-28 01:30:15,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 537 transitions, 12520 flow [2024-06-28 01:30:16,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 537 transitions, 12188 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 01:30:16,434 INFO L231 Difference]: Finished difference. Result has 294 places, 508 transitions, 11286 flow [2024-06-28 01:30:16,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=10782, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11286, PETRI_PLACES=294, PETRI_TRANSITIONS=508} [2024-06-28 01:30:16,434 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 254 predicate places. [2024-06-28 01:30:16,434 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 508 transitions, 11286 flow [2024-06-28 01:30:16,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:16,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:16,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:16,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:30:16,434 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:16,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:16,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1551190199, now seen corresponding path program 17 times [2024-06-28 01:30:16,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:16,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139999909] [2024-06-28 01:30:16,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:16,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:17,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:17,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:17,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139999909] [2024-06-28 01:30:17,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139999909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:17,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:17,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:30:17,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133075235] [2024-06-28 01:30:17,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:17,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:30:17,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:17,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:30:17,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:30:17,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:30:17,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 508 transitions, 11286 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:17,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:17,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:30:17,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:18,747 INFO L124 PetriNetUnfolderBase]: 3045/6447 cut-off events. [2024-06-28 01:30:18,747 INFO L125 PetriNetUnfolderBase]: For 110721/110722 co-relation queries the response was YES. [2024-06-28 01:30:18,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40524 conditions, 6447 events. 3045/6447 cut-off events. For 110721/110722 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 54801 event pairs, 806 based on Foata normal form. 3/5941 useless extension candidates. Maximal degree in co-relation 40392. Up to 3139 conditions per place. [2024-06-28 01:30:18,810 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 278 selfloop transitions, 272 changer transitions 0/558 dead transitions. [2024-06-28 01:30:18,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 558 transitions, 12889 flow [2024-06-28 01:30:18,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:18,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:18,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 01:30:18,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216049382716049 [2024-06-28 01:30:18,811 INFO L175 Difference]: Start difference. First operand has 294 places, 508 transitions, 11286 flow. Second operand 9 states and 169 transitions. [2024-06-28 01:30:18,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 558 transitions, 12889 flow [2024-06-28 01:30:19,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 558 transitions, 12318 flow, removed 32 selfloop flow, removed 10 redundant places. [2024-06-28 01:30:19,303 INFO L231 Difference]: Finished difference. Result has 293 places, 512 transitions, 11350 flow [2024-06-28 01:30:19,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=10717, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11350, PETRI_PLACES=293, PETRI_TRANSITIONS=512} [2024-06-28 01:30:19,304 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 253 predicate places. [2024-06-28 01:30:19,304 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 512 transitions, 11350 flow [2024-06-28 01:30:19,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:19,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:19,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:19,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 01:30:19,305 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:19,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:19,305 INFO L85 PathProgramCache]: Analyzing trace with hash 651765756, now seen corresponding path program 11 times [2024-06-28 01:30:19,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:19,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704440504] [2024-06-28 01:30:19,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:19,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:19,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:19,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:19,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704440504] [2024-06-28 01:30:19,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704440504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:19,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:19,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:30:19,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159455578] [2024-06-28 01:30:19,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:19,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:30:19,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:19,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:30:19,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:30:20,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:30:20,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 512 transitions, 11350 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:20,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:20,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:30:20,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:21,629 INFO L124 PetriNetUnfolderBase]: 3100/6486 cut-off events. [2024-06-28 01:30:21,629 INFO L125 PetriNetUnfolderBase]: For 114108/114109 co-relation queries the response was YES. [2024-06-28 01:30:21,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41506 conditions, 6486 events. 3100/6486 cut-off events. For 114108/114109 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 55151 event pairs, 1169 based on Foata normal form. 3/5923 useless extension candidates. Maximal degree in co-relation 41375. Up to 4734 conditions per place. [2024-06-28 01:30:21,713 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 295 selfloop transitions, 266 changer transitions 0/569 dead transitions. [2024-06-28 01:30:21,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 569 transitions, 13204 flow [2024-06-28 01:30:21,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:30:21,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:30:21,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-28 01:30:21,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:30:21,715 INFO L175 Difference]: Start difference. First operand has 293 places, 512 transitions, 11350 flow. Second operand 11 states and 187 transitions. [2024-06-28 01:30:21,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 569 transitions, 13204 flow [2024-06-28 01:30:22,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 569 transitions, 12767 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 01:30:22,374 INFO L231 Difference]: Finished difference. Result has 299 places, 528 transitions, 11922 flow [2024-06-28 01:30:22,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=10915, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11922, PETRI_PLACES=299, PETRI_TRANSITIONS=528} [2024-06-28 01:30:22,375 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 259 predicate places. [2024-06-28 01:30:22,375 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 528 transitions, 11922 flow [2024-06-28 01:30:22,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:22,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:22,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:22,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 01:30:22,375 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:22,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:22,375 INFO L85 PathProgramCache]: Analyzing trace with hash 651765601, now seen corresponding path program 18 times [2024-06-28 01:30:22,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:22,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824439860] [2024-06-28 01:30:22,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:22,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:22,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:22,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:22,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824439860] [2024-06-28 01:30:22,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824439860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:22,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:22,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:30:22,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173390768] [2024-06-28 01:30:22,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:22,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:30:22,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:22,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:30:22,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:30:23,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:30:23,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 528 transitions, 11922 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:23,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:23,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:30:23,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:24,836 INFO L124 PetriNetUnfolderBase]: 3293/7025 cut-off events. [2024-06-28 01:30:24,836 INFO L125 PetriNetUnfolderBase]: For 130818/130819 co-relation queries the response was YES. [2024-06-28 01:30:24,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43696 conditions, 7025 events. 3293/7025 cut-off events. For 130818/130819 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 61373 event pairs, 1251 based on Foata normal form. 15/6450 useless extension candidates. Maximal degree in co-relation 43563. Up to 4573 conditions per place. [2024-06-28 01:30:24,912 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 314 selfloop transitions, 257 changer transitions 0/579 dead transitions. [2024-06-28 01:30:24,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 579 transitions, 13513 flow [2024-06-28 01:30:24,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:30:24,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:30:24,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-28 01:30:24,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027777777777778 [2024-06-28 01:30:24,913 INFO L175 Difference]: Start difference. First operand has 299 places, 528 transitions, 11922 flow. Second operand 10 states and 181 transitions. [2024-06-28 01:30:24,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 579 transitions, 13513 flow [2024-06-28 01:30:25,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 579 transitions, 13244 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 01:30:25,438 INFO L231 Difference]: Finished difference. Result has 303 places, 532 transitions, 12285 flow [2024-06-28 01:30:25,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11653, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12285, PETRI_PLACES=303, PETRI_TRANSITIONS=532} [2024-06-28 01:30:25,439 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 263 predicate places. [2024-06-28 01:30:25,439 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 532 transitions, 12285 flow [2024-06-28 01:30:25,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:25,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:25,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:25,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 01:30:25,439 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:25,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:25,440 INFO L85 PathProgramCache]: Analyzing trace with hash 657272286, now seen corresponding path program 12 times [2024-06-28 01:30:25,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:25,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958816859] [2024-06-28 01:30:25,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:25,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:26,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:26,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:26,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958816859] [2024-06-28 01:30:26,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958816859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:26,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:26,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:26,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371837881] [2024-06-28 01:30:26,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:26,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:26,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:26,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:26,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:26,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:30:26,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 532 transitions, 12285 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:26,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:26,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:30:26,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:27,919 INFO L124 PetriNetUnfolderBase]: 3321/7048 cut-off events. [2024-06-28 01:30:27,919 INFO L125 PetriNetUnfolderBase]: For 121596/121603 co-relation queries the response was YES. [2024-06-28 01:30:27,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44740 conditions, 7048 events. 3321/7048 cut-off events. For 121596/121603 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 61611 event pairs, 1187 based on Foata normal form. 9/6438 useless extension candidates. Maximal degree in co-relation 44606. Up to 5339 conditions per place. [2024-06-28 01:30:28,000 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 393 selfloop transitions, 173 changer transitions 0/574 dead transitions. [2024-06-28 01:30:28,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 574 transitions, 13903 flow [2024-06-28 01:30:28,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:30:28,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:30:28,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 01:30:28,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-06-28 01:30:28,001 INFO L175 Difference]: Start difference. First operand has 303 places, 532 transitions, 12285 flow. Second operand 10 states and 166 transitions. [2024-06-28 01:30:28,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 574 transitions, 13903 flow [2024-06-28 01:30:28,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 574 transitions, 13396 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 01:30:28,616 INFO L231 Difference]: Finished difference. Result has 304 places, 540 transitions, 12339 flow [2024-06-28 01:30:28,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11778, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12339, PETRI_PLACES=304, PETRI_TRANSITIONS=540} [2024-06-28 01:30:28,616 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 264 predicate places. [2024-06-28 01:30:28,616 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 540 transitions, 12339 flow [2024-06-28 01:30:28,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:28,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:28,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:28,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 01:30:28,617 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:28,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:28,617 INFO L85 PathProgramCache]: Analyzing trace with hash 657272131, now seen corresponding path program 19 times [2024-06-28 01:30:28,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:28,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243624618] [2024-06-28 01:30:28,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:28,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:29,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:29,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:29,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243624618] [2024-06-28 01:30:29,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243624618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:29,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:29,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:29,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707416985] [2024-06-28 01:30:29,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:29,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:29,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:29,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:29,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:29,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:30:29,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 540 transitions, 12339 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:29,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:29,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:30:29,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:31,119 INFO L124 PetriNetUnfolderBase]: 3381/7213 cut-off events. [2024-06-28 01:30:31,119 INFO L125 PetriNetUnfolderBase]: For 125391/125398 co-relation queries the response was YES. [2024-06-28 01:30:31,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45354 conditions, 7213 events. 3381/7213 cut-off events. For 125391/125398 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 63702 event pairs, 1391 based on Foata normal form. 9/6607 useless extension candidates. Maximal degree in co-relation 45219. Up to 5674 conditions per place. [2024-06-28 01:30:31,201 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 481 selfloop transitions, 86 changer transitions 0/575 dead transitions. [2024-06-28 01:30:31,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 575 transitions, 13860 flow [2024-06-28 01:30:31,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:30:31,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:30:31,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 01:30:31,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-06-28 01:30:31,202 INFO L175 Difference]: Start difference. First operand has 304 places, 540 transitions, 12339 flow. Second operand 10 states and 158 transitions. [2024-06-28 01:30:31,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 575 transitions, 13860 flow [2024-06-28 01:30:31,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 575 transitions, 13473 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-28 01:30:31,749 INFO L231 Difference]: Finished difference. Result has 306 places, 549 transitions, 12321 flow [2024-06-28 01:30:31,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11952, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12321, PETRI_PLACES=306, PETRI_TRANSITIONS=549} [2024-06-28 01:30:31,749 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 266 predicate places. [2024-06-28 01:30:31,749 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 549 transitions, 12321 flow [2024-06-28 01:30:31,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:31,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:31,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:31,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 01:30:31,750 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:31,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:31,750 INFO L85 PathProgramCache]: Analyzing trace with hash 534249470, now seen corresponding path program 1 times [2024-06-28 01:30:31,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:31,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144778223] [2024-06-28 01:30:31,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:31,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:32,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:32,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:32,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144778223] [2024-06-28 01:30:32,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144778223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:32,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:32,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:32,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702675887] [2024-06-28 01:30:32,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:32,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:32,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:32,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:32,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:32,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:30:32,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 549 transitions, 12321 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:32,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:32,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:30:32,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:34,408 INFO L124 PetriNetUnfolderBase]: 3409/7281 cut-off events. [2024-06-28 01:30:34,408 INFO L125 PetriNetUnfolderBase]: For 126465/126469 co-relation queries the response was YES. [2024-06-28 01:30:34,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45527 conditions, 7281 events. 3409/7281 cut-off events. For 126465/126469 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 64471 event pairs, 1597 based on Foata normal form. 3/6654 useless extension candidates. Maximal degree in co-relation 45391. Up to 5942 conditions per place. [2024-06-28 01:30:34,475 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 543 selfloop transitions, 20 changer transitions 0/571 dead transitions. [2024-06-28 01:30:34,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 571 transitions, 13625 flow [2024-06-28 01:30:34,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:34,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:34,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-28 01:30:34,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41975308641975306 [2024-06-28 01:30:34,476 INFO L175 Difference]: Start difference. First operand has 306 places, 549 transitions, 12321 flow. Second operand 9 states and 136 transitions. [2024-06-28 01:30:34,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 571 transitions, 13625 flow [2024-06-28 01:30:35,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 571 transitions, 13511 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 01:30:35,054 INFO L231 Difference]: Finished difference. Result has 312 places, 552 transitions, 12317 flow [2024-06-28 01:30:35,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12209, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12317, PETRI_PLACES=312, PETRI_TRANSITIONS=552} [2024-06-28 01:30:35,055 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 272 predicate places. [2024-06-28 01:30:35,055 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 552 transitions, 12317 flow [2024-06-28 01:30:35,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:35,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:35,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:35,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 01:30:35,056 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:35,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:35,056 INFO L85 PathProgramCache]: Analyzing trace with hash -2046568734, now seen corresponding path program 13 times [2024-06-28 01:30:35,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:35,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735140334] [2024-06-28 01:30:35,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:35,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:35,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:35,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:35,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735140334] [2024-06-28 01:30:35,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735140334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:35,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:35,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:35,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433378504] [2024-06-28 01:30:35,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:35,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:35,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:35,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:35,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:35,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:30:35,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 552 transitions, 12317 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:35,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:35,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:30:35,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:37,750 INFO L124 PetriNetUnfolderBase]: 3437/7317 cut-off events. [2024-06-28 01:30:37,751 INFO L125 PetriNetUnfolderBase]: For 129081/129085 co-relation queries the response was YES. [2024-06-28 01:30:37,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45771 conditions, 7317 events. 3437/7317 cut-off events. For 129081/129085 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 64630 event pairs, 1576 based on Foata normal form. 3/6667 useless extension candidates. Maximal degree in co-relation 45633. Up to 5873 conditions per place. [2024-06-28 01:30:37,839 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 503 selfloop transitions, 77 changer transitions 0/588 dead transitions. [2024-06-28 01:30:37,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 588 transitions, 14006 flow [2024-06-28 01:30:37,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:30:37,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:30:37,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 01:30:37,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-28 01:30:37,840 INFO L175 Difference]: Start difference. First operand has 312 places, 552 transitions, 12317 flow. Second operand 10 states and 155 transitions. [2024-06-28 01:30:37,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 588 transitions, 14006 flow [2024-06-28 01:30:38,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 588 transitions, 13952 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 01:30:38,371 INFO L231 Difference]: Finished difference. Result has 316 places, 560 transitions, 12643 flow [2024-06-28 01:30:38,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12263, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12643, PETRI_PLACES=316, PETRI_TRANSITIONS=560} [2024-06-28 01:30:38,372 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 276 predicate places. [2024-06-28 01:30:38,372 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 560 transitions, 12643 flow [2024-06-28 01:30:38,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:38,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:38,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:38,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 01:30:38,372 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:38,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:38,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1170061475, now seen corresponding path program 20 times [2024-06-28 01:30:38,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:38,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453395135] [2024-06-28 01:30:38,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:38,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:39,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:39,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:39,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453395135] [2024-06-28 01:30:39,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453395135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:39,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:39,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:39,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121674073] [2024-06-28 01:30:39,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:39,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:39,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:39,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:39,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:39,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:30:39,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 560 transitions, 12643 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:39,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:39,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:30:39,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:41,157 INFO L124 PetriNetUnfolderBase]: 3697/8041 cut-off events. [2024-06-28 01:30:41,157 INFO L125 PetriNetUnfolderBase]: For 151514/151518 co-relation queries the response was YES. [2024-06-28 01:30:41,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48244 conditions, 8041 events. 3697/8041 cut-off events. For 151514/151518 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 73180 event pairs, 1714 based on Foata normal form. 15/7369 useless extension candidates. Maximal degree in co-relation 48105. Up to 5941 conditions per place. [2024-06-28 01:30:41,254 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 535 selfloop transitions, 56 changer transitions 0/599 dead transitions. [2024-06-28 01:30:41,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 599 transitions, 14210 flow [2024-06-28 01:30:41,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:30:41,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:30:41,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-28 01:30:41,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42676767676767674 [2024-06-28 01:30:41,255 INFO L175 Difference]: Start difference. First operand has 316 places, 560 transitions, 12643 flow. Second operand 11 states and 169 transitions. [2024-06-28 01:30:41,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 599 transitions, 14210 flow [2024-06-28 01:30:41,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 599 transitions, 13783 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-28 01:30:41,932 INFO L231 Difference]: Finished difference. Result has 319 places, 565 transitions, 12480 flow [2024-06-28 01:30:41,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12216, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12480, PETRI_PLACES=319, PETRI_TRANSITIONS=565} [2024-06-28 01:30:41,933 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 279 predicate places. [2024-06-28 01:30:41,933 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 565 transitions, 12480 flow [2024-06-28 01:30:41,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:41,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:41,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:41,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 01:30:41,933 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:41,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:41,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1454742566, now seen corresponding path program 2 times [2024-06-28 01:30:41,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:41,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884006034] [2024-06-28 01:30:41,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:41,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:42,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:42,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:42,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884006034] [2024-06-28 01:30:42,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884006034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:42,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:42,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:42,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695190358] [2024-06-28 01:30:42,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:42,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:42,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:42,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:42,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:42,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:30:42,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 565 transitions, 12480 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:42,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:42,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:30:42,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:44,684 INFO L124 PetriNetUnfolderBase]: 3714/8023 cut-off events. [2024-06-28 01:30:44,684 INFO L125 PetriNetUnfolderBase]: For 135818/135822 co-relation queries the response was YES. [2024-06-28 01:30:44,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48204 conditions, 8023 events. 3714/8023 cut-off events. For 135818/135822 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 72980 event pairs, 1770 based on Foata normal form. 3/7316 useless extension candidates. Maximal degree in co-relation 48064. Up to 6536 conditions per place. [2024-06-28 01:30:44,785 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 562 selfloop transitions, 16 changer transitions 0/586 dead transitions. [2024-06-28 01:30:44,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 586 transitions, 13769 flow [2024-06-28 01:30:44,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:44,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:44,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-06-28 01:30:44,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4228395061728395 [2024-06-28 01:30:44,786 INFO L175 Difference]: Start difference. First operand has 319 places, 565 transitions, 12480 flow. Second operand 9 states and 137 transitions. [2024-06-28 01:30:44,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 586 transitions, 13769 flow [2024-06-28 01:30:45,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 586 transitions, 13643 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 01:30:45,484 INFO L231 Difference]: Finished difference. Result has 319 places, 566 transitions, 12413 flow [2024-06-28 01:30:45,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12354, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12413, PETRI_PLACES=319, PETRI_TRANSITIONS=566} [2024-06-28 01:30:45,484 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 279 predicate places. [2024-06-28 01:30:45,484 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 566 transitions, 12413 flow [2024-06-28 01:30:45,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:45,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:45,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:45,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 01:30:45,485 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:45,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:45,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1464928856, now seen corresponding path program 3 times [2024-06-28 01:30:45,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:45,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146815438] [2024-06-28 01:30:45,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:45,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:46,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:46,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:46,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146815438] [2024-06-28 01:30:46,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146815438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:46,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:46,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:46,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391279833] [2024-06-28 01:30:46,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:46,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:46,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:46,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:46,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:46,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:30:46,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 566 transitions, 12413 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:46,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:46,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:30:46,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:48,327 INFO L124 PetriNetUnfolderBase]: 3731/8063 cut-off events. [2024-06-28 01:30:48,327 INFO L125 PetriNetUnfolderBase]: For 136812/136816 co-relation queries the response was YES. [2024-06-28 01:30:48,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48243 conditions, 8063 events. 3731/8063 cut-off events. For 136812/136816 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 73375 event pairs, 1758 based on Foata normal form. 3/7381 useless extension candidates. Maximal degree in co-relation 48102. Up to 6562 conditions per place. [2024-06-28 01:30:48,410 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 568 selfloop transitions, 14 changer transitions 0/590 dead transitions. [2024-06-28 01:30:48,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 590 transitions, 13731 flow [2024-06-28 01:30:48,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:48,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:48,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-28 01:30:48,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-28 01:30:48,411 INFO L175 Difference]: Start difference. First operand has 319 places, 566 transitions, 12413 flow. Second operand 9 states and 138 transitions. [2024-06-28 01:30:48,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 590 transitions, 13731 flow [2024-06-28 01:30:49,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 590 transitions, 13684 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 01:30:49,090 INFO L231 Difference]: Finished difference. Result has 322 places, 569 transitions, 12443 flow [2024-06-28 01:30:49,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12366, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12443, PETRI_PLACES=322, PETRI_TRANSITIONS=569} [2024-06-28 01:30:49,091 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 282 predicate places. [2024-06-28 01:30:49,091 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 569 transitions, 12443 flow [2024-06-28 01:30:49,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:49,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:49,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:49,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 01:30:49,091 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:49,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:49,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1497333470, now seen corresponding path program 4 times [2024-06-28 01:30:49,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:49,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873331232] [2024-06-28 01:30:49,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:49,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:49,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:49,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:49,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873331232] [2024-06-28 01:30:49,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873331232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:49,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:49,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:49,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908750179] [2024-06-28 01:30:49,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:49,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:49,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:49,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:49,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:50,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:30:50,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 569 transitions, 12443 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:50,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:50,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:30:50,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:52,084 INFO L124 PetriNetUnfolderBase]: 3732/8074 cut-off events. [2024-06-28 01:30:52,084 INFO L125 PetriNetUnfolderBase]: For 137387/137391 co-relation queries the response was YES. [2024-06-28 01:30:52,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48533 conditions, 8074 events. 3732/8074 cut-off events. For 137387/137391 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 73640 event pairs, 1783 based on Foata normal form. 3/7379 useless extension candidates. Maximal degree in co-relation 48390. Up to 6539 conditions per place. [2024-06-28 01:30:52,189 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 553 selfloop transitions, 31 changer transitions 0/592 dead transitions. [2024-06-28 01:30:52,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 592 transitions, 13818 flow [2024-06-28 01:30:52,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:52,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:52,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-28 01:30:52,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43209876543209874 [2024-06-28 01:30:52,190 INFO L175 Difference]: Start difference. First operand has 322 places, 569 transitions, 12443 flow. Second operand 9 states and 140 transitions. [2024-06-28 01:30:52,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 592 transitions, 13818 flow [2024-06-28 01:30:52,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 592 transitions, 13769 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 01:30:52,912 INFO L231 Difference]: Finished difference. Result has 325 places, 570 transitions, 12488 flow [2024-06-28 01:30:52,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12394, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12488, PETRI_PLACES=325, PETRI_TRANSITIONS=570} [2024-06-28 01:30:52,913 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 285 predicate places. [2024-06-28 01:30:52,913 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 570 transitions, 12488 flow [2024-06-28 01:30:52,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:52,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:52,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:52,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 01:30:52,913 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:52,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:52,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1836185887, now seen corresponding path program 21 times [2024-06-28 01:30:52,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:52,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380146063] [2024-06-28 01:30:52,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:52,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:53,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:53,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:53,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380146063] [2024-06-28 01:30:53,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380146063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:53,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:53,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:53,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012163858] [2024-06-28 01:30:53,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:53,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:53,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:53,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:53,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:53,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:30:53,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 570 transitions, 12488 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:53,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:53,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:30:53,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:56,037 INFO L124 PetriNetUnfolderBase]: 3929/8629 cut-off events. [2024-06-28 01:30:56,037 INFO L125 PetriNetUnfolderBase]: For 155865/155869 co-relation queries the response was YES. [2024-06-28 01:30:56,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49949 conditions, 8629 events. 3929/8629 cut-off events. For 155865/155869 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 80204 event pairs, 1880 based on Foata normal form. 15/7912 useless extension candidates. Maximal degree in co-relation 49805. Up to 6381 conditions per place. [2024-06-28 01:30:56,150 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 533 selfloop transitions, 66 changer transitions 0/607 dead transitions. [2024-06-28 01:30:56,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 607 transitions, 14015 flow [2024-06-28 01:30:56,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:30:56,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:30:56,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 01:30:56,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527777777777778 [2024-06-28 01:30:56,151 INFO L175 Difference]: Start difference. First operand has 325 places, 570 transitions, 12488 flow. Second operand 10 states and 163 transitions. [2024-06-28 01:30:56,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 607 transitions, 14015 flow [2024-06-28 01:30:57,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 607 transitions, 13869 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 01:30:57,025 INFO L231 Difference]: Finished difference. Result has 326 places, 570 transitions, 12504 flow [2024-06-28 01:30:57,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12344, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12504, PETRI_PLACES=326, PETRI_TRANSITIONS=570} [2024-06-28 01:30:57,026 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 286 predicate places. [2024-06-28 01:30:57,026 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 570 transitions, 12504 flow [2024-06-28 01:30:57,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:57,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:57,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:57,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 01:30:57,026 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:57,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:57,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1497118144, now seen corresponding path program 14 times [2024-06-28 01:30:57,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:57,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173244408] [2024-06-28 01:30:57,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:57,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:57,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:57,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:57,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173244408] [2024-06-28 01:30:57,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173244408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:57,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:57,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:57,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355922642] [2024-06-28 01:30:57,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:57,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:57,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:57,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:57,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:57,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:30:57,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 570 transitions, 12504 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:57,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:57,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:30:57,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:00,079 INFO L124 PetriNetUnfolderBase]: 3942/8599 cut-off events. [2024-06-28 01:31:00,079 INFO L125 PetriNetUnfolderBase]: For 134085/134089 co-relation queries the response was YES. [2024-06-28 01:31:00,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49518 conditions, 8599 events. 3942/8599 cut-off events. For 134085/134089 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 79839 event pairs, 1924 based on Foata normal form. 3/7860 useless extension candidates. Maximal degree in co-relation 49375. Up to 6895 conditions per place. [2024-06-28 01:31:00,196 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 522 selfloop transitions, 77 changer transitions 0/607 dead transitions. [2024-06-28 01:31:00,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 607 transitions, 14166 flow [2024-06-28 01:31:00,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:31:00,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:31:00,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-28 01:31:00,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-06-28 01:31:00,197 INFO L175 Difference]: Start difference. First operand has 326 places, 570 transitions, 12504 flow. Second operand 11 states and 170 transitions. [2024-06-28 01:31:00,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 607 transitions, 14166 flow [2024-06-28 01:31:00,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 607 transitions, 13821 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-28 01:31:00,973 INFO L231 Difference]: Finished difference. Result has 329 places, 578 transitions, 12562 flow [2024-06-28 01:31:00,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12171, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12562, PETRI_PLACES=329, PETRI_TRANSITIONS=578} [2024-06-28 01:31:00,974 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 289 predicate places. [2024-06-28 01:31:00,974 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 578 transitions, 12562 flow [2024-06-28 01:31:00,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:00,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:00,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:00,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 01:31:00,975 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:00,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:00,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1762155204, now seen corresponding path program 15 times [2024-06-28 01:31:00,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:00,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479130319] [2024-06-28 01:31:00,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:00,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:00,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:01,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:01,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:01,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479130319] [2024-06-28 01:31:01,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479130319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:01,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:01,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:01,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194673645] [2024-06-28 01:31:01,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:01,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:01,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:01,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:01,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:01,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:31:01,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 578 transitions, 12562 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:01,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:01,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:31:01,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:03,859 INFO L124 PetriNetUnfolderBase]: 3800/8262 cut-off events. [2024-06-28 01:31:03,859 INFO L125 PetriNetUnfolderBase]: For 105646/105650 co-relation queries the response was YES. [2024-06-28 01:31:03,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47137 conditions, 8262 events. 3800/8262 cut-off events. For 105646/105650 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 75993 event pairs, 1821 based on Foata normal form. 3/7529 useless extension candidates. Maximal degree in co-relation 46992. Up to 6696 conditions per place. [2024-06-28 01:31:03,973 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 560 selfloop transitions, 29 changer transitions 0/597 dead transitions. [2024-06-28 01:31:03,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 597 transitions, 13839 flow [2024-06-28 01:31:03,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:31:03,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:31:03,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-28 01:31:03,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2024-06-28 01:31:03,974 INFO L175 Difference]: Start difference. First operand has 329 places, 578 transitions, 12562 flow. Second operand 10 states and 149 transitions. [2024-06-28 01:31:03,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 597 transitions, 13839 flow [2024-06-28 01:31:04,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 597 transitions, 13467 flow, removed 58 selfloop flow, removed 9 redundant places. [2024-06-28 01:31:04,663 INFO L231 Difference]: Finished difference. Result has 330 places, 578 transitions, 12261 flow [2024-06-28 01:31:04,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12190, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12261, PETRI_PLACES=330, PETRI_TRANSITIONS=578} [2024-06-28 01:31:04,664 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 290 predicate places. [2024-06-28 01:31:04,664 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 578 transitions, 12261 flow [2024-06-28 01:31:04,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:04,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:04,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:04,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 01:31:04,665 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:04,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:04,665 INFO L85 PathProgramCache]: Analyzing trace with hash -474813517, now seen corresponding path program 1 times [2024-06-28 01:31:04,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:04,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791262957] [2024-06-28 01:31:04,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:04,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:05,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:05,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:05,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791262957] [2024-06-28 01:31:05,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791262957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:05,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:05,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:05,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975778604] [2024-06-28 01:31:05,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:05,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:05,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:05,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:05,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:05,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:31:05,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 578 transitions, 12261 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:05,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:05,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:31:05,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:07,795 INFO L124 PetriNetUnfolderBase]: 4413/9727 cut-off events. [2024-06-28 01:31:07,795 INFO L125 PetriNetUnfolderBase]: For 130758/130762 co-relation queries the response was YES. [2024-06-28 01:31:07,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51608 conditions, 9727 events. 4413/9727 cut-off events. For 130758/130762 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 93658 event pairs, 1881 based on Foata normal form. 12/8930 useless extension candidates. Maximal degree in co-relation 51463. Up to 4075 conditions per place. [2024-06-28 01:31:07,933 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 367 selfloop transitions, 255 changer transitions 0/630 dead transitions. [2024-06-28 01:31:07,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 630 transitions, 13877 flow [2024-06-28 01:31:07,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:31:07,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:31:07,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-28 01:31:07,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5126262626262627 [2024-06-28 01:31:07,934 INFO L175 Difference]: Start difference. First operand has 330 places, 578 transitions, 12261 flow. Second operand 11 states and 203 transitions. [2024-06-28 01:31:07,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 630 transitions, 13877 flow [2024-06-28 01:31:08,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 630 transitions, 13231 flow, removed 20 selfloop flow, removed 13 redundant places. [2024-06-28 01:31:08,901 INFO L231 Difference]: Finished difference. Result has 328 places, 578 transitions, 12134 flow [2024-06-28 01:31:08,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11619, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12134, PETRI_PLACES=328, PETRI_TRANSITIONS=578} [2024-06-28 01:31:08,902 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 288 predicate places. [2024-06-28 01:31:08,902 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 578 transitions, 12134 flow [2024-06-28 01:31:08,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:08,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:08,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:08,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 01:31:08,903 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:08,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:08,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1235044349, now seen corresponding path program 2 times [2024-06-28 01:31:08,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:08,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202814965] [2024-06-28 01:31:08,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:08,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:09,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:09,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:09,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202814965] [2024-06-28 01:31:09,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202814965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:09,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:09,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:09,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767628194] [2024-06-28 01:31:09,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:09,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:09,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:09,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:09,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:09,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:31:09,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 578 transitions, 12134 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:09,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:09,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:31:09,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:12,246 INFO L124 PetriNetUnfolderBase]: 4551/10130 cut-off events. [2024-06-28 01:31:12,246 INFO L125 PetriNetUnfolderBase]: For 148691/148695 co-relation queries the response was YES. [2024-06-28 01:31:12,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52295 conditions, 10130 events. 4551/10130 cut-off events. For 148691/148695 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 99049 event pairs, 2034 based on Foata normal form. 12/9284 useless extension candidates. Maximal degree in co-relation 52153. Up to 7286 conditions per place. [2024-06-28 01:31:12,362 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 360 selfloop transitions, 253 changer transitions 0/621 dead transitions. [2024-06-28 01:31:12,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 621 transitions, 13681 flow [2024-06-28 01:31:12,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:31:12,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:31:12,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-28 01:31:12,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.494949494949495 [2024-06-28 01:31:12,363 INFO L175 Difference]: Start difference. First operand has 328 places, 578 transitions, 12134 flow. Second operand 11 states and 196 transitions. [2024-06-28 01:31:12,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 621 transitions, 13681 flow [2024-06-28 01:31:13,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 621 transitions, 13174 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:31:13,098 INFO L231 Difference]: Finished difference. Result has 330 places, 578 transitions, 12137 flow [2024-06-28 01:31:13,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11627, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12137, PETRI_PLACES=330, PETRI_TRANSITIONS=578} [2024-06-28 01:31:13,098 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 290 predicate places. [2024-06-28 01:31:13,098 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 578 transitions, 12137 flow [2024-06-28 01:31:13,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:13,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:13,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:13,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 01:31:13,099 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:13,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:13,099 INFO L85 PathProgramCache]: Analyzing trace with hash -174261609, now seen corresponding path program 3 times [2024-06-28 01:31:13,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:13,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286447025] [2024-06-28 01:31:13,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:13,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:13,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:13,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:13,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286447025] [2024-06-28 01:31:13,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286447025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:13,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:13,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:13,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789974269] [2024-06-28 01:31:13,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:13,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:13,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:13,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:13,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:13,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:31:13,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 578 transitions, 12137 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:13,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:13,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:31:13,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:16,017 INFO L124 PetriNetUnfolderBase]: 3979/8689 cut-off events. [2024-06-28 01:31:16,017 INFO L125 PetriNetUnfolderBase]: For 119912/119916 co-relation queries the response was YES. [2024-06-28 01:31:16,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47097 conditions, 8689 events. 3979/8689 cut-off events. For 119912/119916 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 80826 event pairs, 1550 based on Foata normal form. 14/7943 useless extension candidates. Maximal degree in co-relation 46954. Up to 6248 conditions per place. [2024-06-28 01:31:16,119 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 351 selfloop transitions, 253 changer transitions 0/612 dead transitions. [2024-06-28 01:31:16,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 612 transitions, 13507 flow [2024-06-28 01:31:16,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:31:16,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:31:16,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-28 01:31:16,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47474747474747475 [2024-06-28 01:31:16,120 INFO L175 Difference]: Start difference. First operand has 330 places, 578 transitions, 12137 flow. Second operand 11 states and 188 transitions. [2024-06-28 01:31:16,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 612 transitions, 13507 flow [2024-06-28 01:31:16,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 612 transitions, 13012 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 01:31:16,704 INFO L231 Difference]: Finished difference. Result has 333 places, 578 transitions, 12156 flow [2024-06-28 01:31:16,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11642, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12156, PETRI_PLACES=333, PETRI_TRANSITIONS=578} [2024-06-28 01:31:16,705 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 293 predicate places. [2024-06-28 01:31:16,705 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 578 transitions, 12156 flow [2024-06-28 01:31:16,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:16,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:16,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:16,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 01:31:16,705 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:16,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:16,705 INFO L85 PathProgramCache]: Analyzing trace with hash -174381579, now seen corresponding path program 4 times [2024-06-28 01:31:16,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:16,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248200699] [2024-06-28 01:31:16,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:16,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:17,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:17,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:17,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248200699] [2024-06-28 01:31:17,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248200699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:17,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:17,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:17,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095108137] [2024-06-28 01:31:17,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:17,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:17,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:17,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:17,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:17,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:31:17,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 578 transitions, 12156 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:17,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:17,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:31:17,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:19,608 INFO L124 PetriNetUnfolderBase]: 4033/8810 cut-off events. [2024-06-28 01:31:19,608 INFO L125 PetriNetUnfolderBase]: For 118569/118573 co-relation queries the response was YES. [2024-06-28 01:31:19,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47515 conditions, 8810 events. 4033/8810 cut-off events. For 118569/118573 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 82058 event pairs, 1530 based on Foata normal form. 12/8062 useless extension candidates. Maximal degree in co-relation 47371. Up to 5975 conditions per place. [2024-06-28 01:31:19,719 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 364 selfloop transitions, 253 changer transitions 0/625 dead transitions. [2024-06-28 01:31:19,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 625 transitions, 13625 flow [2024-06-28 01:31:19,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:31:19,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:31:19,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-28 01:31:19,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5050505050505051 [2024-06-28 01:31:19,720 INFO L175 Difference]: Start difference. First operand has 333 places, 578 transitions, 12156 flow. Second operand 11 states and 200 transitions. [2024-06-28 01:31:19,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 625 transitions, 13625 flow [2024-06-28 01:31:20,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 625 transitions, 13125 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:31:20,373 INFO L231 Difference]: Finished difference. Result has 335 places, 578 transitions, 12166 flow [2024-06-28 01:31:20,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11656, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12166, PETRI_PLACES=335, PETRI_TRANSITIONS=578} [2024-06-28 01:31:20,373 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 295 predicate places. [2024-06-28 01:31:20,373 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 578 transitions, 12166 flow [2024-06-28 01:31:20,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:20,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:20,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:20,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 01:31:20,374 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:20,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:20,374 INFO L85 PathProgramCache]: Analyzing trace with hash 544477741, now seen corresponding path program 5 times [2024-06-28 01:31:20,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:20,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550214464] [2024-06-28 01:31:20,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:20,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:21,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:21,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:21,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550214464] [2024-06-28 01:31:21,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550214464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:21,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:21,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:21,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92588179] [2024-06-28 01:31:21,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:21,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:21,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:21,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:21,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:21,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:31:21,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 578 transitions, 12166 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:21,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:21,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:31:21,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:23,677 INFO L124 PetriNetUnfolderBase]: 4208/9230 cut-off events. [2024-06-28 01:31:23,677 INFO L125 PetriNetUnfolderBase]: For 139811/139818 co-relation queries the response was YES. [2024-06-28 01:31:23,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49418 conditions, 9230 events. 4208/9230 cut-off events. For 139811/139818 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 87118 event pairs, 1682 based on Foata normal form. 15/8473 useless extension candidates. Maximal degree in co-relation 49273. Up to 6630 conditions per place. [2024-06-28 01:31:23,793 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 466 selfloop transitions, 146 changer transitions 0/620 dead transitions. [2024-06-28 01:31:23,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 620 transitions, 13717 flow [2024-06-28 01:31:23,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:31:23,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:31:23,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-06-28 01:31:23,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49242424242424243 [2024-06-28 01:31:23,794 INFO L175 Difference]: Start difference. First operand has 335 places, 578 transitions, 12166 flow. Second operand 11 states and 195 transitions. [2024-06-28 01:31:23,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 620 transitions, 13717 flow [2024-06-28 01:31:24,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 620 transitions, 13213 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:31:24,655 INFO L231 Difference]: Finished difference. Result has 337 places, 578 transitions, 11958 flow [2024-06-28 01:31:24,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11662, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11958, PETRI_PLACES=337, PETRI_TRANSITIONS=578} [2024-06-28 01:31:24,655 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 297 predicate places. [2024-06-28 01:31:24,655 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 578 transitions, 11958 flow [2024-06-28 01:31:24,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:24,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:24,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:24,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 01:31:24,656 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:24,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:24,656 INFO L85 PathProgramCache]: Analyzing trace with hash 546266329, now seen corresponding path program 6 times [2024-06-28 01:31:24,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:24,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068184903] [2024-06-28 01:31:24,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:24,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:25,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:25,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:25,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068184903] [2024-06-28 01:31:25,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068184903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:25,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:25,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:25,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389836064] [2024-06-28 01:31:25,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:25,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:25,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:25,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:25,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:25,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:31:25,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 578 transitions, 11958 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:25,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:25,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:31:25,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:27,924 INFO L124 PetriNetUnfolderBase]: 4195/9206 cut-off events. [2024-06-28 01:31:27,924 INFO L125 PetriNetUnfolderBase]: For 126568/126575 co-relation queries the response was YES. [2024-06-28 01:31:28,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48431 conditions, 9206 events. 4195/9206 cut-off events. For 126568/126575 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 86953 event pairs, 1723 based on Foata normal form. 17/8442 useless extension candidates. Maximal degree in co-relation 48285. Up to 6954 conditions per place. [2024-06-28 01:31:28,056 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 459 selfloop transitions, 145 changer transitions 0/612 dead transitions. [2024-06-28 01:31:28,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 612 transitions, 13330 flow [2024-06-28 01:31:28,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:31:28,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:31:28,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-28 01:31:28,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-06-28 01:31:28,057 INFO L175 Difference]: Start difference. First operand has 337 places, 578 transitions, 11958 flow. Second operand 11 states and 189 transitions. [2024-06-28 01:31:28,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 612 transitions, 13330 flow [2024-06-28 01:31:28,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 612 transitions, 13040 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:31:28,722 INFO L231 Difference]: Finished difference. Result has 339 places, 578 transitions, 11964 flow [2024-06-28 01:31:28,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11668, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11964, PETRI_PLACES=339, PETRI_TRANSITIONS=578} [2024-06-28 01:31:28,723 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 299 predicate places. [2024-06-28 01:31:28,723 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 578 transitions, 11964 flow [2024-06-28 01:31:28,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:28,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:28,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:28,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 01:31:28,723 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:28,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:28,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1452286441, now seen corresponding path program 7 times [2024-06-28 01:31:28,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:28,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501066078] [2024-06-28 01:31:28,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:28,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:29,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:29,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:29,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501066078] [2024-06-28 01:31:29,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501066078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:29,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:29,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:29,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741581539] [2024-06-28 01:31:29,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:29,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:29,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:29,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:29,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:29,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:31:29,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 578 transitions, 11964 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:29,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:29,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:31:29,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:31,855 INFO L124 PetriNetUnfolderBase]: 4333/9558 cut-off events. [2024-06-28 01:31:31,855 INFO L125 PetriNetUnfolderBase]: For 143900/143907 co-relation queries the response was YES. [2024-06-28 01:31:31,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50060 conditions, 9558 events. 4333/9558 cut-off events. For 143900/143907 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 91174 event pairs, 1766 based on Foata normal form. 15/8777 useless extension candidates. Maximal degree in co-relation 49913. Up to 6429 conditions per place. [2024-06-28 01:31:31,985 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 463 selfloop transitions, 154 changer transitions 0/625 dead transitions. [2024-06-28 01:31:31,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 625 transitions, 13555 flow [2024-06-28 01:31:31,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:31:31,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:31:31,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-28 01:31:31,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5050505050505051 [2024-06-28 01:31:31,986 INFO L175 Difference]: Start difference. First operand has 339 places, 578 transitions, 11964 flow. Second operand 11 states and 200 transitions. [2024-06-28 01:31:31,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 625 transitions, 13555 flow [2024-06-28 01:31:32,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 625 transitions, 13269 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:31:32,807 INFO L231 Difference]: Finished difference. Result has 341 places, 578 transitions, 11990 flow [2024-06-28 01:31:32,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11678, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11990, PETRI_PLACES=341, PETRI_TRANSITIONS=578} [2024-06-28 01:31:32,807 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 301 predicate places. [2024-06-28 01:31:32,807 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 578 transitions, 11990 flow [2024-06-28 01:31:32,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:32,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:32,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:32,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 01:31:32,808 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:32,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:32,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1452406411, now seen corresponding path program 8 times [2024-06-28 01:31:32,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:32,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65776577] [2024-06-28 01:31:32,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:32,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:32,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:33,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:33,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:33,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65776577] [2024-06-28 01:31:33,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65776577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:33,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:33,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:33,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274980378] [2024-06-28 01:31:33,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:33,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:33,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:33,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:33,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:33,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:31:33,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 578 transitions, 11990 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:33,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:33,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:31:33,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:36,306 INFO L124 PetriNetUnfolderBase]: 4384/9643 cut-off events. [2024-06-28 01:31:36,306 INFO L125 PetriNetUnfolderBase]: For 146920/146927 co-relation queries the response was YES. [2024-06-28 01:31:36,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50379 conditions, 9643 events. 4384/9643 cut-off events. For 146920/146927 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 92293 event pairs, 1901 based on Foata normal form. 17/8857 useless extension candidates. Maximal degree in co-relation 50231. Up to 7309 conditions per place. [2024-06-28 01:31:36,400 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 452 selfloop transitions, 152 changer transitions 0/612 dead transitions. [2024-06-28 01:31:36,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 612 transitions, 13360 flow [2024-06-28 01:31:36,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:31:36,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:31:36,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-28 01:31:36,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797979797979798 [2024-06-28 01:31:36,401 INFO L175 Difference]: Start difference. First operand has 341 places, 578 transitions, 11990 flow. Second operand 11 states and 190 transitions. [2024-06-28 01:31:36,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 612 transitions, 13360 flow [2024-06-28 01:31:37,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 612 transitions, 13074 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 01:31:37,196 INFO L231 Difference]: Finished difference. Result has 344 places, 578 transitions, 12014 flow [2024-06-28 01:31:37,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11704, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12014, PETRI_PLACES=344, PETRI_TRANSITIONS=578} [2024-06-28 01:31:37,197 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 304 predicate places. [2024-06-28 01:31:37,197 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 578 transitions, 12014 flow [2024-06-28 01:31:37,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:37,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:37,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:37,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 01:31:37,198 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:37,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:37,198 INFO L85 PathProgramCache]: Analyzing trace with hash 541793029, now seen corresponding path program 9 times [2024-06-28 01:31:37,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:37,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300894123] [2024-06-28 01:31:37,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:37,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:37,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:37,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:37,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300894123] [2024-06-28 01:31:37,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300894123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:37,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:37,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:37,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861846170] [2024-06-28 01:31:37,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:37,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:37,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:37,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:37,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:38,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:31:38,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 578 transitions, 12014 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:38,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:38,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:31:38,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:40,762 INFO L124 PetriNetUnfolderBase]: 4374/9646 cut-off events. [2024-06-28 01:31:40,762 INFO L125 PetriNetUnfolderBase]: For 132382/132389 co-relation queries the response was YES. [2024-06-28 01:31:40,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49950 conditions, 9646 events. 4374/9646 cut-off events. For 132382/132389 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 92422 event pairs, 1981 based on Foata normal form. 15/8863 useless extension candidates. Maximal degree in co-relation 49801. Up to 7167 conditions per place. [2024-06-28 01:31:40,877 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 468 selfloop transitions, 143 changer transitions 0/619 dead transitions. [2024-06-28 01:31:40,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 619 transitions, 13441 flow [2024-06-28 01:31:40,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:31:40,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:31:40,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-06-28 01:31:40,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49242424242424243 [2024-06-28 01:31:40,878 INFO L175 Difference]: Start difference. First operand has 344 places, 578 transitions, 12014 flow. Second operand 11 states and 195 transitions. [2024-06-28 01:31:40,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 619 transitions, 13441 flow [2024-06-28 01:31:41,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 619 transitions, 13145 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 01:31:41,687 INFO L231 Difference]: Finished difference. Result has 347 places, 578 transitions, 12008 flow [2024-06-28 01:31:41,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11718, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12008, PETRI_PLACES=347, PETRI_TRANSITIONS=578} [2024-06-28 01:31:41,688 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 307 predicate places. [2024-06-28 01:31:41,688 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 578 transitions, 12008 flow [2024-06-28 01:31:41,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:41,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:41,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:41,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 01:31:41,689 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:41,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:41,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1045335891, now seen corresponding path program 10 times [2024-06-28 01:31:41,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:41,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428718604] [2024-06-28 01:31:41,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:41,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:42,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:42,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:42,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428718604] [2024-06-28 01:31:42,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428718604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:42,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:42,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:42,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268818773] [2024-06-28 01:31:42,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:42,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:42,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:42,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:42,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:42,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:31:42,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 578 transitions, 12008 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:42,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:42,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:31:42,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:45,592 INFO L124 PetriNetUnfolderBase]: 5474/12194 cut-off events. [2024-06-28 01:31:45,592 INFO L125 PetriNetUnfolderBase]: For 154757/154761 co-relation queries the response was YES. [2024-06-28 01:31:45,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58346 conditions, 12194 events. 5474/12194 cut-off events. For 154757/154761 co-relation queries the response was YES. Maximal size of possible extension queue 851. Compared 123330 event pairs, 1525 based on Foata normal form. 12/11334 useless extension candidates. Maximal degree in co-relation 58196. Up to 3442 conditions per place. [2024-06-28 01:31:45,735 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 365 selfloop transitions, 316 changer transitions 0/689 dead transitions. [2024-06-28 01:31:45,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 689 transitions, 14717 flow [2024-06-28 01:31:45,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:31:45,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:31:45,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-28 01:31:45,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5176767676767676 [2024-06-28 01:31:45,736 INFO L175 Difference]: Start difference. First operand has 347 places, 578 transitions, 12008 flow. Second operand 11 states and 205 transitions. [2024-06-28 01:31:45,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 689 transitions, 14717 flow [2024-06-28 01:31:46,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 689 transitions, 14430 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 01:31:46,638 INFO L231 Difference]: Finished difference. Result has 350 places, 580 transitions, 12585 flow [2024-06-28 01:31:46,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11724, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=314, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12585, PETRI_PLACES=350, PETRI_TRANSITIONS=580} [2024-06-28 01:31:46,639 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 310 predicate places. [2024-06-28 01:31:46,639 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 580 transitions, 12585 flow [2024-06-28 01:31:46,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:46,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:46,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:46,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 01:31:46,639 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:46,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:46,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1544837659, now seen corresponding path program 11 times [2024-06-28 01:31:46,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:46,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081420239] [2024-06-28 01:31:46,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:46,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:47,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:47,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:47,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081420239] [2024-06-28 01:31:47,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081420239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:47,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:47,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:47,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367645997] [2024-06-28 01:31:47,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:47,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:47,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:47,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:47,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:47,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:31:47,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 580 transitions, 12585 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:47,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:47,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:31:47,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:51,123 INFO L124 PetriNetUnfolderBase]: 6566/14861 cut-off events. [2024-06-28 01:31:51,123 INFO L125 PetriNetUnfolderBase]: For 202035/202039 co-relation queries the response was YES. [2024-06-28 01:31:51,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70745 conditions, 14861 events. 6566/14861 cut-off events. For 202035/202039 co-relation queries the response was YES. Maximal size of possible extension queue 1123. Compared 159317 event pairs, 3522 based on Foata normal form. 12/13853 useless extension candidates. Maximal degree in co-relation 70594. Up to 8407 conditions per place. [2024-06-28 01:31:51,358 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 319 selfloop transitions, 334 changer transitions 0/661 dead transitions. [2024-06-28 01:31:51,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 661 transitions, 14864 flow [2024-06-28 01:31:51,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:31:51,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:31:51,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-28 01:31:51,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2024-06-28 01:31:51,359 INFO L175 Difference]: Start difference. First operand has 350 places, 580 transitions, 12585 flow. Second operand 11 states and 204 transitions. [2024-06-28 01:31:51,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 661 transitions, 14864 flow [2024-06-28 01:31:52,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 661 transitions, 14397 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 01:31:52,685 INFO L231 Difference]: Finished difference. Result has 356 places, 584 transitions, 12997 flow [2024-06-28 01:31:52,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12148, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12997, PETRI_PLACES=356, PETRI_TRANSITIONS=584} [2024-06-28 01:31:52,685 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 316 predicate places. [2024-06-28 01:31:52,685 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 584 transitions, 12997 flow [2024-06-28 01:31:52,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:52,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:52,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:52,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 01:31:52,686 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:52,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:52,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1157856091, now seen corresponding path program 12 times [2024-06-28 01:31:52,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:52,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499380131] [2024-06-28 01:31:52,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:52,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:53,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:53,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:53,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499380131] [2024-06-28 01:31:53,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499380131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:53,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:53,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:53,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727950131] [2024-06-28 01:31:53,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:53,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:53,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:53,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:53,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:53,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:31:53,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 584 transitions, 12997 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:53,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:53,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:31:53,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:57,136 INFO L124 PetriNetUnfolderBase]: 6445/14553 cut-off events. [2024-06-28 01:31:57,136 INFO L125 PetriNetUnfolderBase]: For 204500/204504 co-relation queries the response was YES. [2024-06-28 01:31:57,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69548 conditions, 14553 events. 6445/14553 cut-off events. For 204500/204504 co-relation queries the response was YES. Maximal size of possible extension queue 1129. Compared 154841 event pairs, 3343 based on Foata normal form. 12/13544 useless extension candidates. Maximal degree in co-relation 69393. Up to 10270 conditions per place. [2024-06-28 01:31:57,362 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 309 selfloop transitions, 331 changer transitions 0/648 dead transitions. [2024-06-28 01:31:57,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 648 transitions, 14953 flow [2024-06-28 01:31:57,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:31:57,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:31:57,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-28 01:31:57,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51010101010101 [2024-06-28 01:31:57,363 INFO L175 Difference]: Start difference. First operand has 356 places, 584 transitions, 12997 flow. Second operand 11 states and 202 transitions. [2024-06-28 01:31:57,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 648 transitions, 14953 flow [2024-06-28 01:31:59,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 648 transitions, 14353 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 01:31:59,205 INFO L231 Difference]: Finished difference. Result has 361 places, 586 transitions, 13128 flow [2024-06-28 01:31:59,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12397, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=329, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13128, PETRI_PLACES=361, PETRI_TRANSITIONS=586} [2024-06-28 01:31:59,205 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 321 predicate places. [2024-06-28 01:31:59,206 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 586 transitions, 13128 flow [2024-06-28 01:31:59,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:59,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:59,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:59,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 01:31:59,206 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:59,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:59,206 INFO L85 PathProgramCache]: Analyzing trace with hash 742391611, now seen corresponding path program 13 times [2024-06-28 01:31:59,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:59,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543396303] [2024-06-28 01:31:59,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:59,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:59,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:59,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:59,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543396303] [2024-06-28 01:31:59,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543396303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:59,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:59,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:59,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619555416] [2024-06-28 01:31:59,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:59,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:59,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:59,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:59,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:32:00,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:32:00,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 586 transitions, 13128 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:00,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:00,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:32:00,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:04,362 INFO L124 PetriNetUnfolderBase]: 6581/14802 cut-off events. [2024-06-28 01:32:04,362 INFO L125 PetriNetUnfolderBase]: For 211165/211169 co-relation queries the response was YES. [2024-06-28 01:32:04,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71103 conditions, 14802 events. 6581/14802 cut-off events. For 211165/211169 co-relation queries the response was YES. Maximal size of possible extension queue 1145. Compared 157403 event pairs, 3986 based on Foata normal form. 14/13738 useless extension candidates. Maximal degree in co-relation 70945. Up to 11654 conditions per place. [2024-06-28 01:32:04,544 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 459 selfloop transitions, 188 changer transitions 0/655 dead transitions. [2024-06-28 01:32:04,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 655 transitions, 15318 flow [2024-06-28 01:32:04,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:32:04,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:32:04,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 193 transitions. [2024-06-28 01:32:04,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44675925925925924 [2024-06-28 01:32:04,545 INFO L175 Difference]: Start difference. First operand has 361 places, 586 transitions, 13128 flow. Second operand 12 states and 193 transitions. [2024-06-28 01:32:04,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 655 transitions, 15318 flow [2024-06-28 01:32:06,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 655 transitions, 14608 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 01:32:06,193 INFO L231 Difference]: Finished difference. Result has 367 places, 619 transitions, 13643 flow [2024-06-28 01:32:06,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12472, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13643, PETRI_PLACES=367, PETRI_TRANSITIONS=619} [2024-06-28 01:32:06,194 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 327 predicate places. [2024-06-28 01:32:06,194 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 619 transitions, 13643 flow [2024-06-28 01:32:06,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:06,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:06,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:06,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 01:32:06,195 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:06,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:06,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1803165051, now seen corresponding path program 14 times [2024-06-28 01:32:06,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:06,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218064581] [2024-06-28 01:32:06,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:06,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:06,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:06,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:06,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218064581] [2024-06-28 01:32:06,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218064581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:06,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:06,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:32:06,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254245567] [2024-06-28 01:32:06,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:06,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:32:06,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:06,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:32:06,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:32:07,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:32:07,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 619 transitions, 13643 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:07,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:07,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:32:07,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:12,023 INFO L124 PetriNetUnfolderBase]: 6571/14752 cut-off events. [2024-06-28 01:32:12,023 INFO L125 PetriNetUnfolderBase]: For 188588/188592 co-relation queries the response was YES. [2024-06-28 01:32:12,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70127 conditions, 14752 events. 6571/14752 cut-off events. For 188588/188592 co-relation queries the response was YES. Maximal size of possible extension queue 1142. Compared 156685 event pairs, 3480 based on Foata normal form. 12/13703 useless extension candidates. Maximal degree in co-relation 69966. Up to 10714 conditions per place. [2024-06-28 01:32:12,203 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 303 selfloop transitions, 357 changer transitions 0/668 dead transitions. [2024-06-28 01:32:12,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 668 transitions, 15276 flow [2024-06-28 01:32:12,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:32:12,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:32:12,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-28 01:32:12,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.494949494949495 [2024-06-28 01:32:12,205 INFO L175 Difference]: Start difference. First operand has 367 places, 619 transitions, 13643 flow. Second operand 11 states and 196 transitions. [2024-06-28 01:32:12,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 668 transitions, 15276 flow [2024-06-28 01:32:13,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 668 transitions, 14887 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-28 01:32:13,598 INFO L231 Difference]: Finished difference. Result has 370 places, 620 transitions, 14006 flow [2024-06-28 01:32:13,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13254, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=356, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14006, PETRI_PLACES=370, PETRI_TRANSITIONS=620} [2024-06-28 01:32:13,599 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 330 predicate places. [2024-06-28 01:32:13,599 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 620 transitions, 14006 flow [2024-06-28 01:32:13,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:13,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:13,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:13,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 01:32:13,599 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:13,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:13,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2093095911, now seen corresponding path program 15 times [2024-06-28 01:32:13,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:13,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529400091] [2024-06-28 01:32:13,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:13,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:14,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:14,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:14,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529400091] [2024-06-28 01:32:14,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529400091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:14,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:14,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:32:14,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144903304] [2024-06-28 01:32:14,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:14,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:32:14,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:14,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:32:14,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:32:14,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:32:14,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 620 transitions, 14006 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:14,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:14,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:32:14,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:19,439 INFO L124 PetriNetUnfolderBase]: 6992/15670 cut-off events. [2024-06-28 01:32:19,439 INFO L125 PetriNetUnfolderBase]: For 223517/223518 co-relation queries the response was YES. [2024-06-28 01:32:19,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74489 conditions, 15670 events. 6992/15670 cut-off events. For 223517/223518 co-relation queries the response was YES. Maximal size of possible extension queue 1237. Compared 168548 event pairs, 4173 based on Foata normal form. 9/14587 useless extension candidates. Maximal degree in co-relation 74327. Up to 10508 conditions per place. [2024-06-28 01:32:19,633 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 474 selfloop transitions, 195 changer transitions 0/677 dead transitions. [2024-06-28 01:32:19,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 677 transitions, 15846 flow [2024-06-28 01:32:19,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:32:19,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:32:19,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-28 01:32:19,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5126262626262627 [2024-06-28 01:32:19,634 INFO L175 Difference]: Start difference. First operand has 370 places, 620 transitions, 14006 flow. Second operand 11 states and 203 transitions. [2024-06-28 01:32:19,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 677 transitions, 15846 flow [2024-06-28 01:32:21,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 677 transitions, 15116 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 01:32:21,193 INFO L231 Difference]: Finished difference. Result has 373 places, 620 transitions, 13676 flow [2024-06-28 01:32:21,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13282, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13676, PETRI_PLACES=373, PETRI_TRANSITIONS=620} [2024-06-28 01:32:21,193 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 333 predicate places. [2024-06-28 01:32:21,194 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 620 transitions, 13676 flow [2024-06-28 01:32:21,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:21,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:21,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:21,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 01:32:21,194 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:21,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:21,195 INFO L85 PathProgramCache]: Analyzing trace with hash 2093211231, now seen corresponding path program 16 times [2024-06-28 01:32:21,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:21,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932485881] [2024-06-28 01:32:21,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:21,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:22,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:22,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:22,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932485881] [2024-06-28 01:32:22,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932485881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:22,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:22,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:32:22,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222019248] [2024-06-28 01:32:22,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:22,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:32:22,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:22,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:32:22,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:32:22,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:32:22,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 620 transitions, 13676 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:22,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:22,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:32:22,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:27,249 INFO L124 PetriNetUnfolderBase]: 7293/16522 cut-off events. [2024-06-28 01:32:27,249 INFO L125 PetriNetUnfolderBase]: For 250153/250154 co-relation queries the response was YES. [2024-06-28 01:32:27,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77073 conditions, 16522 events. 7293/16522 cut-off events. For 250153/250154 co-relation queries the response was YES. Maximal size of possible extension queue 1303. Compared 180404 event pairs, 4529 based on Foata normal form. 9/15335 useless extension candidates. Maximal degree in co-relation 76910. Up to 12625 conditions per place. [2024-06-28 01:32:27,434 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 475 selfloop transitions, 191 changer transitions 0/674 dead transitions. [2024-06-28 01:32:27,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 674 transitions, 15510 flow [2024-06-28 01:32:27,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:32:27,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:32:27,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-28 01:32:27,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025252525252525 [2024-06-28 01:32:27,436 INFO L175 Difference]: Start difference. First operand has 373 places, 620 transitions, 13676 flow. Second operand 11 states and 199 transitions. [2024-06-28 01:32:27,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 674 transitions, 15510 flow [2024-06-28 01:32:29,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 674 transitions, 15376 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 01:32:29,141 INFO L231 Difference]: Finished difference. Result has 380 places, 622 transitions, 13979 flow [2024-06-28 01:32:29,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13542, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13979, PETRI_PLACES=380, PETRI_TRANSITIONS=622} [2024-06-28 01:32:29,144 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 340 predicate places. [2024-06-28 01:32:29,144 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 622 transitions, 13979 flow [2024-06-28 01:32:29,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:29,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:29,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:29,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 01:32:29,144 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:29,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:29,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1032437791, now seen corresponding path program 17 times [2024-06-28 01:32:29,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:29,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136892061] [2024-06-28 01:32:29,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:29,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:30,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:30,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:30,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136892061] [2024-06-28 01:32:30,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136892061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:30,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:30,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:32:30,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294142509] [2024-06-28 01:32:30,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:30,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:32:30,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:30,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:32:30,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:32:30,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:32:30,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 622 transitions, 13979 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:30,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:30,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:32:30,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:35,009 INFO L124 PetriNetUnfolderBase]: 7280/16492 cut-off events. [2024-06-28 01:32:35,010 INFO L125 PetriNetUnfolderBase]: For 236343/236344 co-relation queries the response was YES. [2024-06-28 01:32:35,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76722 conditions, 16492 events. 7280/16492 cut-off events. For 236343/236344 co-relation queries the response was YES. Maximal size of possible extension queue 1300. Compared 180146 event pairs, 4323 based on Foata normal form. 11/15309 useless extension candidates. Maximal degree in co-relation 76557. Up to 12877 conditions per place. [2024-06-28 01:32:35,197 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 452 selfloop transitions, 204 changer transitions 0/664 dead transitions. [2024-06-28 01:32:35,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 664 transitions, 15553 flow [2024-06-28 01:32:35,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:32:35,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:32:35,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-28 01:32:35,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48737373737373735 [2024-06-28 01:32:35,198 INFO L175 Difference]: Start difference. First operand has 380 places, 622 transitions, 13979 flow. Second operand 11 states and 193 transitions. [2024-06-28 01:32:35,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 664 transitions, 15553 flow [2024-06-28 01:32:36,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 664 transitions, 15126 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:32:36,836 INFO L231 Difference]: Finished difference. Result has 382 places, 622 transitions, 13968 flow [2024-06-28 01:32:36,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13552, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13968, PETRI_PLACES=382, PETRI_TRANSITIONS=622} [2024-06-28 01:32:36,837 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 342 predicate places. [2024-06-28 01:32:36,837 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 622 transitions, 13968 flow [2024-06-28 01:32:36,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:36,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:36,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:36,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 01:32:36,838 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:36,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:36,838 INFO L85 PathProgramCache]: Analyzing trace with hash -2031053635, now seen corresponding path program 18 times [2024-06-28 01:32:36,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:36,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74808850] [2024-06-28 01:32:36,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:36,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:36,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat