./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix010.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix010.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix010.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix010.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:16:22,973 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:16:23,050 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:16:23,057 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:16:23,058 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:16:23,100 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:16:23,101 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:16:23,101 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:16:23,102 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:16:23,105 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:16:23,106 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:16:23,106 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:16:23,107 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:16:23,108 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:16:23,109 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:16:23,109 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:16:23,109 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:16:23,109 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:16:23,110 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:16:23,110 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:16:23,110 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:16:23,111 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:16:23,111 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:16:23,111 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:16:23,112 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:16:23,112 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:16:23,112 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:16:23,112 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:16:23,113 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:16:23,113 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:16:23,114 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:16:23,115 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:16:23,115 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:16:23,115 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:16:23,115 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:16:23,116 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:16:23,116 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:16:23,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:16:23,116 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:16:23,117 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:16:23,117 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:16:23,117 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:16:23,117 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:16:23,118 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:16:23,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:16:23,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:16:23,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:16:23,407 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:16:23,407 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:16:23,408 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix010.oepc.i [2024-06-27 18:16:24,587 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:16:24,822 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:16:24,822 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix010.oepc.i [2024-06-27 18:16:24,837 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e18af58eb/d87d6650a88a41fbaea884798975a88a/FLAG3d57b87b9 [2024-06-27 18:16:24,849 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e18af58eb/d87d6650a88a41fbaea884798975a88a [2024-06-27 18:16:24,852 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:16:24,856 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:16:24,856 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix010.oepc.yml/witness.yml [2024-06-27 18:16:25,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:16:25,046 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:16:25,047 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:16:25,047 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:16:25,050 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:16:25,051 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:16:24" (1/2) ... [2024-06-27 18:16:25,052 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f51eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:16:25, skipping insertion in model container [2024-06-27 18:16:25,052 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:16:24" (1/2) ... [2024-06-27 18:16:25,053 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@533f7a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:16:25, skipping insertion in model container [2024-06-27 18:16:25,053 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:16:25" (2/2) ... [2024-06-27 18:16:25,054 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f51eb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:16:25, skipping insertion in model container [2024-06-27 18:16:25,054 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:16:25" (2/2) ... [2024-06-27 18:16:25,055 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:16:25,158 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:16:25,160 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] (((((((((((((((((((((! multithreaded || a$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 18:16:25,160 INFO L97 edCorrectnessWitness]: Location invariant before [L855-L855] (((((((((((((((((((((! multithreaded || a$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 18:16:25,160 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] (((((((((((((((((((((! multithreaded || a$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 18:16:25,161 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:16:25,161 INFO L106 edCorrectnessWitness]: ghost_update [L851-L851] multithreaded = 1; [2024-06-27 18:16:25,208 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:16:25,455 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/mix010.oepc.i[945,958] [2024-06-27 18:16:25,709 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:16:25,722 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:16:25,760 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/mix010.oepc.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:16:25,851 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:16:25,886 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:16:25,886 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:16:25 WrapperNode [2024-06-27 18:16:25,887 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:16:25,887 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:16:25,888 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:16:25,888 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:16:25,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:16:25" (1/1) ... [2024-06-27 18:16:25,910 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:16:25" (1/1) ... [2024-06-27 18:16:25,943 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 125 [2024-06-27 18:16:25,945 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:16:25,947 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:16:25,947 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:16:25,948 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:16:25,959 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:16:25" (1/1) ... [2024-06-27 18:16:25,960 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:16:25" (1/1) ... [2024-06-27 18:16:25,964 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:16:25" (1/1) ... [2024-06-27 18:16:25,979 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 18:16:25,979 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:16:25" (1/1) ... [2024-06-27 18:16:25,980 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:16:25" (1/1) ... [2024-06-27 18:16:25,990 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:16:25" (1/1) ... [2024-06-27 18:16:25,991 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:16:25" (1/1) ... [2024-06-27 18:16:25,994 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:16:25" (1/1) ... [2024-06-27 18:16:25,995 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:16:25" (1/1) ... [2024-06-27 18:16:25,998 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:16:25,999 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:16:25,999 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:16:26,000 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:16:26,000 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:16:25" (1/1) ... [2024-06-27 18:16:26,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:16:26,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:16:26,027 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 18:16:26,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 18:16:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:16:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:16:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:16:26,063 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:16:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:16:26,064 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:16:26,064 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:16:26,064 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:16:26,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:16:26,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:16:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:16:26,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:16:26,067 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:16:26,193 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:16:26,195 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:16:26,634 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:16:26,634 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:16:26,798 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:16:26,799 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:16:26,800 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:16:26 BoogieIcfgContainer [2024-06-27 18:16:26,800 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:16:26,802 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:16:26,802 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:16:26,805 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:16:26,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:16:24" (1/4) ... [2024-06-27 18:16:26,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af9dd02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:16:26, skipping insertion in model container [2024-06-27 18:16:26,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:16:25" (2/4) ... [2024-06-27 18:16:26,807 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af9dd02 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:16:26, skipping insertion in model container [2024-06-27 18:16:26,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:16:25" (3/4) ... [2024-06-27 18:16:26,807 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af9dd02 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:16:26, skipping insertion in model container [2024-06-27 18:16:26,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:16:26" (4/4) ... [2024-06-27 18:16:26,808 INFO L112 eAbstractionObserver]: Analyzing ICFG mix010.oepc.i [2024-06-27 18:16:26,823 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:16:26,824 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:16:26,824 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:16:26,871 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:16:26,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 49 transitions, 110 flow [2024-06-27 18:16:26,938 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-06-27 18:16:26,938 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:16:26,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 78 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-06-27 18:16:26,942 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 49 transitions, 110 flow [2024-06-27 18:16:26,946 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 46 transitions, 101 flow [2024-06-27 18:16:26,954 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:16:26,959 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;@10a0cdd2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:16:26,959 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:16:26,962 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:16:26,962 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:16:26,962 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:16:26,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:26,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:16:26,964 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:16:26,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:26,969 INFO L85 PathProgramCache]: Analyzing trace with hash 348754714, now seen corresponding path program 1 times [2024-06-27 18:16:26,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:26,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105727633] [2024-06-27 18:16:26,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:26,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:28,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:28,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:28,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105727633] [2024-06-27 18:16:28,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105727633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:28,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:28,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:16:28,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875069121] [2024-06-27 18:16:28,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:28,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:16:28,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:28,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:16:28,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:16:28,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-06-27 18:16:28,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:28,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:28,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-06-27 18:16:28,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:29,402 INFO L124 PetriNetUnfolderBase]: 3816/6343 cut-off events. [2024-06-27 18:16:29,402 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-27 18:16:29,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11928 conditions, 6343 events. 3816/6343 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 42081 event pairs, 2900 based on Foata normal form. 181/5953 useless extension candidates. Maximal degree in co-relation 11916. Up to 5482 conditions per place. [2024-06-27 18:16:29,440 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 41 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2024-06-27 18:16:29,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 227 flow [2024-06-27 18:16:29,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:16:29,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:16:29,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-06-27 18:16:29,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6938775510204082 [2024-06-27 18:16:29,452 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 101 flow. Second operand 3 states and 102 transitions. [2024-06-27 18:16:29,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 227 flow [2024-06-27 18:16:29,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 222 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:16:29,458 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 133 flow [2024-06-27 18:16:29,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-06-27 18:16:29,462 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2024-06-27 18:16:29,463 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 133 flow [2024-06-27 18:16:29,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:29,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:29,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:16:29,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:16:29,464 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:16:29,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:29,464 INFO L85 PathProgramCache]: Analyzing trace with hash 348755474, now seen corresponding path program 1 times [2024-06-27 18:16:29,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:29,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804343168] [2024-06-27 18:16:29,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:29,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:29,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:29,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:29,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804343168] [2024-06-27 18:16:29,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804343168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:29,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:29,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:16:29,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676217643] [2024-06-27 18:16:29,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:29,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:16:29,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:29,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:16:29,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:16:29,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 49 [2024-06-27 18:16:29,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:29,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:29,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 49 [2024-06-27 18:16:29,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:29,878 INFO L124 PetriNetUnfolderBase]: 978/1990 cut-off events. [2024-06-27 18:16:29,878 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-06-27 18:16:29,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3736 conditions, 1990 events. 978/1990 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 13930 event pairs, 610 based on Foata normal form. 0/1837 useless extension candidates. Maximal degree in co-relation 3724. Up to 1259 conditions per place. [2024-06-27 18:16:29,891 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 35 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2024-06-27 18:16:29,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 236 flow [2024-06-27 18:16:29,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:16:29,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:16:29,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-06-27 18:16:29,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7891156462585034 [2024-06-27 18:16:29,896 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 133 flow. Second operand 3 states and 116 transitions. [2024-06-27 18:16:29,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 236 flow [2024-06-27 18:16:29,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 232 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:16:29,900 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 126 flow [2024-06-27 18:16:29,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-27 18:16:29,902 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2024-06-27 18:16:29,902 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 126 flow [2024-06-27 18:16:29,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:29,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:29,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:29,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:16:29,903 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:16:29,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:29,903 INFO L85 PathProgramCache]: Analyzing trace with hash 145856984, now seen corresponding path program 1 times [2024-06-27 18:16:29,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:29,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978220158] [2024-06-27 18:16:29,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:29,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:30,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:30,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:30,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978220158] [2024-06-27 18:16:30,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978220158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:30,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:30,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:16:30,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990873991] [2024-06-27 18:16:30,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:30,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:16:30,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:30,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:16:30,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:16:30,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-06-27 18:16:30,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 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) [2024-06-27 18:16:30,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:30,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-06-27 18:16:30,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:31,541 INFO L124 PetriNetUnfolderBase]: 3137/5256 cut-off events. [2024-06-27 18:16:31,541 INFO L125 PetriNetUnfolderBase]: For 1299/1299 co-relation queries the response was YES. [2024-06-27 18:16:31,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11072 conditions, 5256 events. 3137/5256 cut-off events. For 1299/1299 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 33839 event pairs, 1916 based on Foata normal form. 3/5049 useless extension candidates. Maximal degree in co-relation 11059. Up to 4506 conditions per place. [2024-06-27 18:16:31,568 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 49 selfloop transitions, 8 changer transitions 2/73 dead transitions. [2024-06-27 18:16:31,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 73 transitions, 316 flow [2024-06-27 18:16:31,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:16:31,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:16:31,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-06-27 18:16:31,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6479591836734694 [2024-06-27 18:16:31,573 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 126 flow. Second operand 4 states and 127 transitions. [2024-06-27 18:16:31,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 73 transitions, 316 flow [2024-06-27 18:16:31,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 73 transitions, 308 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:16:31,578 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 187 flow [2024-06-27 18:16:31,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=187, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-06-27 18:16:31,579 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2024-06-27 18:16:31,579 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 187 flow [2024-06-27 18:16:31,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 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) [2024-06-27 18:16:31,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:31,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:31,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:16:31,580 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:16:31,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:31,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1565330281, now seen corresponding path program 1 times [2024-06-27 18:16:31,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:31,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659352166] [2024-06-27 18:16:31,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:31,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:33,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:33,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:33,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659352166] [2024-06-27 18:16:33,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659352166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:33,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:33,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:16:33,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959264961] [2024-06-27 18:16:33,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:33,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:16:33,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:33,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:16:33,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:16:33,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-06-27 18:16:33,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 187 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:33,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:33,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-06-27 18:16:33,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:34,487 INFO L124 PetriNetUnfolderBase]: 3276/5570 cut-off events. [2024-06-27 18:16:34,488 INFO L125 PetriNetUnfolderBase]: For 2376/2376 co-relation queries the response was YES. [2024-06-27 18:16:34,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12570 conditions, 5570 events. 3276/5570 cut-off events. For 2376/2376 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 36467 event pairs, 1853 based on Foata normal form. 3/5368 useless extension candidates. Maximal degree in co-relation 12555. Up to 4665 conditions per place. [2024-06-27 18:16:34,526 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 70 selfloop transitions, 14 changer transitions 0/97 dead transitions. [2024-06-27 18:16:34,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 97 transitions, 483 flow [2024-06-27 18:16:34,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:16:34,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:16:34,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-06-27 18:16:34,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6122448979591837 [2024-06-27 18:16:34,528 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 187 flow. Second operand 6 states and 180 transitions. [2024-06-27 18:16:34,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 97 transitions, 483 flow [2024-06-27 18:16:34,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 97 transitions, 466 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-27 18:16:34,532 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 250 flow [2024-06-27 18:16:34,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=250, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2024-06-27 18:16:34,533 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 8 predicate places. [2024-06-27 18:16:34,534 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 250 flow [2024-06-27 18:16:34,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:34,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:34,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:34,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:16:34,535 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:16:34,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:34,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1280597492, now seen corresponding path program 1 times [2024-06-27 18:16:34,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:34,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430630340] [2024-06-27 18:16:34,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:34,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:36,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:36,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:36,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430630340] [2024-06-27 18:16:36,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430630340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:36,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:36,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:16:36,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668926433] [2024-06-27 18:16:36,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:36,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:16:36,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:36,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:16:36,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:16:36,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-06-27 18:16:36,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 250 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:36,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:36,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-06-27 18:16:36,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:37,570 INFO L124 PetriNetUnfolderBase]: 3267/5054 cut-off events. [2024-06-27 18:16:37,570 INFO L125 PetriNetUnfolderBase]: For 4428/4428 co-relation queries the response was YES. [2024-06-27 18:16:37,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13186 conditions, 5054 events. 3267/5054 cut-off events. For 4428/4428 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 29880 event pairs, 1008 based on Foata normal form. 6/4985 useless extension candidates. Maximal degree in co-relation 13168. Up to 4595 conditions per place. [2024-06-27 18:16:37,607 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 76 selfloop transitions, 27 changer transitions 0/116 dead transitions. [2024-06-27 18:16:37,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 116 transitions, 644 flow [2024-06-27 18:16:37,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:16:37,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:16:37,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 206 transitions. [2024-06-27 18:16:37,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6005830903790087 [2024-06-27 18:16:37,610 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 250 flow. Second operand 7 states and 206 transitions. [2024-06-27 18:16:37,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 116 transitions, 644 flow [2024-06-27 18:16:37,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 116 transitions, 614 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 18:16:37,617 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 384 flow [2024-06-27 18:16:37,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=384, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2024-06-27 18:16:37,618 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 14 predicate places. [2024-06-27 18:16:37,618 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 384 flow [2024-06-27 18:16:37,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:37,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:37,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:37,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:16:37,619 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:16:37,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:37,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1661914531, now seen corresponding path program 1 times [2024-06-27 18:16:37,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:37,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197941187] [2024-06-27 18:16:37,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:37,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:38,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:38,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:38,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197941187] [2024-06-27 18:16:38,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197941187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:38,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:38,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:16:38,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170178031] [2024-06-27 18:16:38,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:38,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:16:38,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:38,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:16:38,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:16:38,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:16:38,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 384 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 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) [2024-06-27 18:16:38,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:38,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:16:38,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:39,507 INFO L124 PetriNetUnfolderBase]: 3802/6374 cut-off events. [2024-06-27 18:16:39,508 INFO L125 PetriNetUnfolderBase]: For 8974/8974 co-relation queries the response was YES. [2024-06-27 18:16:39,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17243 conditions, 6374 events. 3802/6374 cut-off events. For 8974/8974 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 41772 event pairs, 1709 based on Foata normal form. 2/6152 useless extension candidates. Maximal degree in co-relation 17220. Up to 5440 conditions per place. [2024-06-27 18:16:39,551 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 68 selfloop transitions, 11 changer transitions 0/90 dead transitions. [2024-06-27 18:16:39,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 90 transitions, 602 flow [2024-06-27 18:16:39,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:16:39,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:16:39,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-06-27 18:16:39,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2024-06-27 18:16:39,558 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 384 flow. Second operand 5 states and 128 transitions. [2024-06-27 18:16:39,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 90 transitions, 602 flow [2024-06-27 18:16:39,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 90 transitions, 557 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-06-27 18:16:39,573 INFO L231 Difference]: Finished difference. Result has 73 places, 72 transitions, 392 flow [2024-06-27 18:16:39,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=392, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2024-06-27 18:16:39,576 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 18 predicate places. [2024-06-27 18:16:39,576 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 392 flow [2024-06-27 18:16:39,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 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) [2024-06-27 18:16:39,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:39,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:39,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:16:39,577 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:16:39,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:39,578 INFO L85 PathProgramCache]: Analyzing trace with hash -2978202, now seen corresponding path program 1 times [2024-06-27 18:16:39,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:39,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070660687] [2024-06-27 18:16:39,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:39,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:40,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:40,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:40,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070660687] [2024-06-27 18:16:40,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070660687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:40,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:40,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:16:40,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948957327] [2024-06-27 18:16:40,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:40,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:16:40,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:40,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:16:40,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:16:40,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:16:40,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 392 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:40,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:40,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:16:40,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:41,321 INFO L124 PetriNetUnfolderBase]: 4477/7481 cut-off events. [2024-06-27 18:16:41,322 INFO L125 PetriNetUnfolderBase]: For 12265/12265 co-relation queries the response was YES. [2024-06-27 18:16:41,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20729 conditions, 7481 events. 4477/7481 cut-off events. For 12265/12265 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 49386 event pairs, 2037 based on Foata normal form. 2/7271 useless extension candidates. Maximal degree in co-relation 20703. Up to 6372 conditions per place. [2024-06-27 18:16:41,363 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 77 selfloop transitions, 14 changer transitions 0/101 dead transitions. [2024-06-27 18:16:41,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 101 transitions, 658 flow [2024-06-27 18:16:41,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:16:41,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:16:41,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-27 18:16:41,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034013605442177 [2024-06-27 18:16:41,365 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 392 flow. Second operand 6 states and 148 transitions. [2024-06-27 18:16:41,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 101 transitions, 658 flow [2024-06-27 18:16:41,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 101 transitions, 631 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 18:16:41,373 INFO L231 Difference]: Finished difference. Result has 76 places, 75 transitions, 427 flow [2024-06-27 18:16:41,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=427, PETRI_PLACES=76, PETRI_TRANSITIONS=75} [2024-06-27 18:16:41,373 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 21 predicate places. [2024-06-27 18:16:41,374 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 75 transitions, 427 flow [2024-06-27 18:16:41,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:41,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:41,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:41,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:16:41,375 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:16:41,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:41,375 INFO L85 PathProgramCache]: Analyzing trace with hash -98967921, now seen corresponding path program 1 times [2024-06-27 18:16:41,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:41,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806718925] [2024-06-27 18:16:41,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:41,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:42,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:42,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:42,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806718925] [2024-06-27 18:16:42,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806718925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:42,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:42,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:16:42,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894353910] [2024-06-27 18:16:42,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:42,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:16:42,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:42,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:16:42,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:16:42,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:16:42,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 75 transitions, 427 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:42,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:42,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:16:42,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:43,165 INFO L124 PetriNetUnfolderBase]: 4256/7214 cut-off events. [2024-06-27 18:16:43,165 INFO L125 PetriNetUnfolderBase]: For 15778/15782 co-relation queries the response was YES. [2024-06-27 18:16:43,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21114 conditions, 7214 events. 4256/7214 cut-off events. For 15778/15782 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 47973 event pairs, 1638 based on Foata normal form. 6/6973 useless extension candidates. Maximal degree in co-relation 21087. Up to 6035 conditions per place. [2024-06-27 18:16:43,219 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 85 selfloop transitions, 18 changer transitions 0/115 dead transitions. [2024-06-27 18:16:43,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 115 transitions, 798 flow [2024-06-27 18:16:43,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:16:43,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:16:43,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-06-27 18:16:43,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5408163265306123 [2024-06-27 18:16:43,221 INFO L175 Difference]: Start difference. First operand has 76 places, 75 transitions, 427 flow. Second operand 6 states and 159 transitions. [2024-06-27 18:16:43,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 115 transitions, 798 flow [2024-06-27 18:16:43,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 115 transitions, 755 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 18:16:43,232 INFO L231 Difference]: Finished difference. Result has 79 places, 85 transitions, 517 flow [2024-06-27 18:16:43,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=517, PETRI_PLACES=79, PETRI_TRANSITIONS=85} [2024-06-27 18:16:43,233 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 24 predicate places. [2024-06-27 18:16:43,233 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 85 transitions, 517 flow [2024-06-27 18:16:43,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:43,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:43,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:43,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:16:43,234 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:16:43,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:43,234 INFO L85 PathProgramCache]: Analyzing trace with hash 652145649, now seen corresponding path program 2 times [2024-06-27 18:16:43,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:43,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254635521] [2024-06-27 18:16:43,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:43,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:44,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:44,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:44,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254635521] [2024-06-27 18:16:44,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254635521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:44,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:44,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:16:44,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955443072] [2024-06-27 18:16:44,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:44,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:16:44,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:44,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:16:44,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:16:44,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:16:44,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 85 transitions, 517 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:44,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:44,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:16:44,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:44,915 INFO L124 PetriNetUnfolderBase]: 4260/7246 cut-off events. [2024-06-27 18:16:44,915 INFO L125 PetriNetUnfolderBase]: For 20410/20410 co-relation queries the response was YES. [2024-06-27 18:16:44,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22539 conditions, 7246 events. 4260/7246 cut-off events. For 20410/20410 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 48786 event pairs, 1841 based on Foata normal form. 2/7025 useless extension candidates. Maximal degree in co-relation 22510. Up to 6087 conditions per place. [2024-06-27 18:16:44,960 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 83 selfloop transitions, 13 changer transitions 0/108 dead transitions. [2024-06-27 18:16:44,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 108 transitions, 767 flow [2024-06-27 18:16:44,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:16:44,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:16:44,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-27 18:16:44,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5136054421768708 [2024-06-27 18:16:44,962 INFO L175 Difference]: Start difference. First operand has 79 places, 85 transitions, 517 flow. Second operand 6 states and 151 transitions. [2024-06-27 18:16:44,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 108 transitions, 767 flow [2024-06-27 18:16:44,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 108 transitions, 739 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-27 18:16:44,980 INFO L231 Difference]: Finished difference. Result has 84 places, 85 transitions, 523 flow [2024-06-27 18:16:44,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=523, PETRI_PLACES=84, PETRI_TRANSITIONS=85} [2024-06-27 18:16:44,982 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 29 predicate places. [2024-06-27 18:16:44,982 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 85 transitions, 523 flow [2024-06-27 18:16:44,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:44,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:44,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:44,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:16:44,983 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:16:44,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:44,983 INFO L85 PathProgramCache]: Analyzing trace with hash -92322544, now seen corresponding path program 1 times [2024-06-27 18:16:44,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:44,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796693108] [2024-06-27 18:16:44,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:44,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:45,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:45,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:45,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796693108] [2024-06-27 18:16:45,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796693108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:45,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:45,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:16:45,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138190293] [2024-06-27 18:16:45,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:45,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:16:45,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:45,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:16:45,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:16:46,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:16:46,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 85 transitions, 523 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:46,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:46,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:16:46,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:47,071 INFO L124 PetriNetUnfolderBase]: 4490/7473 cut-off events. [2024-06-27 18:16:47,071 INFO L125 PetriNetUnfolderBase]: For 22377/22377 co-relation queries the response was YES. [2024-06-27 18:16:47,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23487 conditions, 7473 events. 4490/7473 cut-off events. For 22377/22377 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 49029 event pairs, 1915 based on Foata normal form. 4/7265 useless extension candidates. Maximal degree in co-relation 23455. Up to 6356 conditions per place. [2024-06-27 18:16:47,114 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 92 selfloop transitions, 20 changer transitions 0/122 dead transitions. [2024-06-27 18:16:47,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 122 transitions, 859 flow [2024-06-27 18:16:47,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:16:47,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:16:47,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 18:16:47,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5043731778425656 [2024-06-27 18:16:47,116 INFO L175 Difference]: Start difference. First operand has 84 places, 85 transitions, 523 flow. Second operand 7 states and 173 transitions. [2024-06-27 18:16:47,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 122 transitions, 859 flow [2024-06-27 18:16:47,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 122 transitions, 818 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 18:16:47,137 INFO L231 Difference]: Finished difference. Result has 86 places, 88 transitions, 562 flow [2024-06-27 18:16:47,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=562, PETRI_PLACES=86, PETRI_TRANSITIONS=88} [2024-06-27 18:16:47,139 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 31 predicate places. [2024-06-27 18:16:47,139 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 88 transitions, 562 flow [2024-06-27 18:16:47,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:47,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:47,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:47,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:16:47,140 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:16:47,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:47,141 INFO L85 PathProgramCache]: Analyzing trace with hash -282815988, now seen corresponding path program 1 times [2024-06-27 18:16:47,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:47,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600677644] [2024-06-27 18:16:47,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:47,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:48,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:48,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:48,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600677644] [2024-06-27 18:16:48,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600677644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:48,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:48,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:16:48,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596277625] [2024-06-27 18:16:48,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:48,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:16:48,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:48,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:16:48,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:16:48,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:16:48,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 88 transitions, 562 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:48,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:48,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:16:48,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:49,401 INFO L124 PetriNetUnfolderBase]: 4264/7198 cut-off events. [2024-06-27 18:16:49,402 INFO L125 PetriNetUnfolderBase]: For 26632/26636 co-relation queries the response was YES. [2024-06-27 18:16:49,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23859 conditions, 7198 events. 4264/7198 cut-off events. For 26632/26636 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 47681 event pairs, 1551 based on Foata normal form. 6/6956 useless extension candidates. Maximal degree in co-relation 23827. Up to 6053 conditions per place. [2024-06-27 18:16:49,449 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 103 selfloop transitions, 15 changer transitions 0/130 dead transitions. [2024-06-27 18:16:49,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 130 transitions, 932 flow [2024-06-27 18:16:49,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:16:49,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:16:49,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 18:16:49,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5335276967930029 [2024-06-27 18:16:49,453 INFO L175 Difference]: Start difference. First operand has 86 places, 88 transitions, 562 flow. Second operand 7 states and 183 transitions. [2024-06-27 18:16:49,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 130 transitions, 932 flow [2024-06-27 18:16:49,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 130 transitions, 876 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 18:16:49,476 INFO L231 Difference]: Finished difference. Result has 88 places, 91 transitions, 580 flow [2024-06-27 18:16:49,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=580, PETRI_PLACES=88, PETRI_TRANSITIONS=91} [2024-06-27 18:16:49,477 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 33 predicate places. [2024-06-27 18:16:49,477 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 91 transitions, 580 flow [2024-06-27 18:16:49,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:49,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:49,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:49,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:16:49,479 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:16:49,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:49,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1226963432, now seen corresponding path program 1 times [2024-06-27 18:16:49,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:49,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207456520] [2024-06-27 18:16:49,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:49,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:50,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:50,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:50,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207456520] [2024-06-27 18:16:50,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207456520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:50,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:50,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:16:50,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551223455] [2024-06-27 18:16:50,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:50,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:16:50,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:50,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:16:50,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:16:50,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:16:50,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 91 transitions, 580 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:50,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:50,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:16:50,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:51,770 INFO L124 PetriNetUnfolderBase]: 4541/7510 cut-off events. [2024-06-27 18:16:51,770 INFO L125 PetriNetUnfolderBase]: For 31881/31887 co-relation queries the response was YES. [2024-06-27 18:16:51,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25818 conditions, 7510 events. 4541/7510 cut-off events. For 31881/31887 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 48545 event pairs, 1683 based on Foata normal form. 4/7266 useless extension candidates. Maximal degree in co-relation 25785. Up to 6375 conditions per place. [2024-06-27 18:16:51,829 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 103 selfloop transitions, 26 changer transitions 0/139 dead transitions. [2024-06-27 18:16:51,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 139 transitions, 1058 flow [2024-06-27 18:16:51,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:16:51,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:16:51,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-27 18:16:51,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5247813411078717 [2024-06-27 18:16:51,832 INFO L175 Difference]: Start difference. First operand has 88 places, 91 transitions, 580 flow. Second operand 7 states and 180 transitions. [2024-06-27 18:16:51,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 139 transitions, 1058 flow [2024-06-27 18:16:51,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 139 transitions, 1008 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 18:16:51,857 INFO L231 Difference]: Finished difference. Result has 91 places, 101 transitions, 695 flow [2024-06-27 18:16:51,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=695, PETRI_PLACES=91, PETRI_TRANSITIONS=101} [2024-06-27 18:16:51,859 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 36 predicate places. [2024-06-27 18:16:51,859 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 101 transitions, 695 flow [2024-06-27 18:16:51,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:51,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:51,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:51,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:16:51,860 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:16:51,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:51,861 INFO L85 PathProgramCache]: Analyzing trace with hash -282696018, now seen corresponding path program 2 times [2024-06-27 18:16:51,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:51,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667028639] [2024-06-27 18:16:51,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:51,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:51,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:52,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:52,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:52,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667028639] [2024-06-27 18:16:52,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667028639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:52,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:52,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:16:52,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000747386] [2024-06-27 18:16:52,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:52,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:16:52,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:52,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:16:52,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:16:53,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:16:53,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 101 transitions, 695 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:53,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:53,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:16:53,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:53,845 INFO L124 PetriNetUnfolderBase]: 4330/7355 cut-off events. [2024-06-27 18:16:53,846 INFO L125 PetriNetUnfolderBase]: For 38056/38070 co-relation queries the response was YES. [2024-06-27 18:16:53,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26488 conditions, 7355 events. 4330/7355 cut-off events. For 38056/38070 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 49125 event pairs, 1549 based on Foata normal form. 6/7114 useless extension candidates. Maximal degree in co-relation 26453. Up to 6050 conditions per place. [2024-06-27 18:16:53,888 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 102 selfloop transitions, 28 changer transitions 0/145 dead transitions. [2024-06-27 18:16:53,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 145 transitions, 1181 flow [2024-06-27 18:16:53,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:16:53,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:16:53,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-27 18:16:53,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5422740524781341 [2024-06-27 18:16:53,890 INFO L175 Difference]: Start difference. First operand has 91 places, 101 transitions, 695 flow. Second operand 7 states and 186 transitions. [2024-06-27 18:16:53,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 145 transitions, 1181 flow [2024-06-27 18:16:53,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 145 transitions, 1151 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-27 18:16:53,910 INFO L231 Difference]: Finished difference. Result has 96 places, 107 transitions, 811 flow [2024-06-27 18:16:53,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=811, PETRI_PLACES=96, PETRI_TRANSITIONS=107} [2024-06-27 18:16:53,911 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 41 predicate places. [2024-06-27 18:16:53,911 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 107 transitions, 811 flow [2024-06-27 18:16:53,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:53,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:53,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:53,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:16:53,912 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:16:53,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:53,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1258319674, now seen corresponding path program 2 times [2024-06-27 18:16:53,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:53,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013152219] [2024-06-27 18:16:53,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:53,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:55,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:55,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:55,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013152219] [2024-06-27 18:16:55,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013152219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:55,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:55,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:16:55,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438979641] [2024-06-27 18:16:55,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:55,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:16:55,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:55,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:16:55,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:16:55,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:16:55,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 107 transitions, 811 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:55,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:55,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:16:55,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:56,064 INFO L124 PetriNetUnfolderBase]: 4592/7681 cut-off events. [2024-06-27 18:16:56,064 INFO L125 PetriNetUnfolderBase]: For 45925/45925 co-relation queries the response was YES. [2024-06-27 18:16:56,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28835 conditions, 7681 events. 4592/7681 cut-off events. For 45925/45925 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 50791 event pairs, 1890 based on Foata normal form. 2/7466 useless extension candidates. Maximal degree in co-relation 28797. Up to 6493 conditions per place. [2024-06-27 18:16:56,107 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 111 selfloop transitions, 22 changer transitions 0/143 dead transitions. [2024-06-27 18:16:56,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 143 transitions, 1249 flow [2024-06-27 18:16:56,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:16:56,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:16:56,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 18:16:56,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5072886297376094 [2024-06-27 18:16:56,108 INFO L175 Difference]: Start difference. First operand has 96 places, 107 transitions, 811 flow. Second operand 7 states and 174 transitions. [2024-06-27 18:16:56,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 143 transitions, 1249 flow [2024-06-27 18:16:56,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 143 transitions, 1199 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-27 18:16:56,134 INFO L231 Difference]: Finished difference. Result has 100 places, 110 transitions, 849 flow [2024-06-27 18:16:56,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=849, PETRI_PLACES=100, PETRI_TRANSITIONS=110} [2024-06-27 18:16:56,135 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 45 predicate places. [2024-06-27 18:16:56,135 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 110 transitions, 849 flow [2024-06-27 18:16:56,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:56,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:56,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:56,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:16:56,136 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:16:56,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:56,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1432694126, now seen corresponding path program 3 times [2024-06-27 18:16:56,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:56,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476244916] [2024-06-27 18:16:56,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:56,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:57,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:57,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:57,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476244916] [2024-06-27 18:16:57,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476244916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:57,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:57,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:16:57,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865781571] [2024-06-27 18:16:57,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:57,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:16:57,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:57,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:16:57,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:16:57,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:16:57,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 110 transitions, 849 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:57,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:57,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:16:57,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:58,072 INFO L124 PetriNetUnfolderBase]: 4354/7421 cut-off events. [2024-06-27 18:16:58,072 INFO L125 PetriNetUnfolderBase]: For 48993/49009 co-relation queries the response was YES. [2024-06-27 18:16:58,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28131 conditions, 7421 events. 4354/7421 cut-off events. For 48993/49009 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 50202 event pairs, 1756 based on Foata normal form. 2/7198 useless extension candidates. Maximal degree in co-relation 28091. Up to 6182 conditions per place. [2024-06-27 18:16:58,111 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 109 selfloop transitions, 16 changer transitions 0/141 dead transitions. [2024-06-27 18:16:58,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 141 transitions, 1183 flow [2024-06-27 18:16:58,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:16:58,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:16:58,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 18:16:58,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131195335276968 [2024-06-27 18:16:58,113 INFO L175 Difference]: Start difference. First operand has 100 places, 110 transitions, 849 flow. Second operand 7 states and 176 transitions. [2024-06-27 18:16:58,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 141 transitions, 1183 flow [2024-06-27 18:16:58,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 141 transitions, 1086 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 18:16:58,145 INFO L231 Difference]: Finished difference. Result has 102 places, 110 transitions, 792 flow [2024-06-27 18:16:58,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=792, PETRI_PLACES=102, PETRI_TRANSITIONS=110} [2024-06-27 18:16:58,146 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 47 predicate places. [2024-06-27 18:16:58,146 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 110 transitions, 792 flow [2024-06-27 18:16:58,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:58,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:58,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:58,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:16:58,147 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:16:58,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:58,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1432960292, now seen corresponding path program 3 times [2024-06-27 18:16:58,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:58,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989032845] [2024-06-27 18:16:58,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:58,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:58,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:58,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:58,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989032845] [2024-06-27 18:16:58,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989032845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:58,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:58,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:16:58,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212639122] [2024-06-27 18:16:58,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:58,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:16:58,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:58,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:16:58,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:16:59,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:16:59,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 110 transitions, 792 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:59,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:59,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:16:59,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:59,970 INFO L124 PetriNetUnfolderBase]: 4582/7668 cut-off events. [2024-06-27 18:16:59,971 INFO L125 PetriNetUnfolderBase]: For 51227/51227 co-relation queries the response was YES. [2024-06-27 18:16:59,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29102 conditions, 7668 events. 4582/7668 cut-off events. For 51227/51227 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 50730 event pairs, 1894 based on Foata normal form. 2/7453 useless extension candidates. Maximal degree in co-relation 29062. Up to 6513 conditions per place. [2024-06-27 18:17:00,013 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 112 selfloop transitions, 17 changer transitions 0/139 dead transitions. [2024-06-27 18:17:00,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 139 transitions, 1124 flow [2024-06-27 18:17:00,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:17:00,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:17:00,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 18:17:00,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49271137026239065 [2024-06-27 18:17:00,015 INFO L175 Difference]: Start difference. First operand has 102 places, 110 transitions, 792 flow. Second operand 7 states and 169 transitions. [2024-06-27 18:17:00,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 139 transitions, 1124 flow [2024-06-27 18:17:00,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 139 transitions, 1054 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 18:17:00,045 INFO L231 Difference]: Finished difference. Result has 103 places, 110 transitions, 764 flow [2024-06-27 18:17:00,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=764, PETRI_PLACES=103, PETRI_TRANSITIONS=110} [2024-06-27 18:17:00,046 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 48 predicate places. [2024-06-27 18:17:00,046 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 110 transitions, 764 flow [2024-06-27 18:17:00,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:00,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:00,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:00,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:17:00,047 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:00,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:00,048 INFO L85 PathProgramCache]: Analyzing trace with hash 276428971, now seen corresponding path program 1 times [2024-06-27 18:17:00,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:00,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527568716] [2024-06-27 18:17:00,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:00,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:00,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:00,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:00,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527568716] [2024-06-27 18:17:00,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527568716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:00,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:00,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:17:00,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852628566] [2024-06-27 18:17:00,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:00,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:17:00,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:00,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:17:00,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:17:00,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:00,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 110 transitions, 764 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:00,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:00,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:00,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:01,824 INFO L124 PetriNetUnfolderBase]: 5458/9188 cut-off events. [2024-06-27 18:17:01,824 INFO L125 PetriNetUnfolderBase]: For 68719/68735 co-relation queries the response was YES. [2024-06-27 18:17:01,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34262 conditions, 9188 events. 5458/9188 cut-off events. For 68719/68735 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 62830 event pairs, 2495 based on Foata normal form. 1/8894 useless extension candidates. Maximal degree in co-relation 34221. Up to 7822 conditions per place. [2024-06-27 18:17:01,892 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 95 selfloop transitions, 11 changer transitions 0/128 dead transitions. [2024-06-27 18:17:01,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 128 transitions, 1038 flow [2024-06-27 18:17:01,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:17:01,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:17:01,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-27 18:17:01,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-27 18:17:01,894 INFO L175 Difference]: Start difference. First operand has 103 places, 110 transitions, 764 flow. Second operand 5 states and 120 transitions. [2024-06-27 18:17:01,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 128 transitions, 1038 flow [2024-06-27 18:17:01,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 128 transitions, 991 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 18:17:01,941 INFO L231 Difference]: Finished difference. Result has 102 places, 113 transitions, 774 flow [2024-06-27 18:17:01,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=774, PETRI_PLACES=102, PETRI_TRANSITIONS=113} [2024-06-27 18:17:01,942 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 47 predicate places. [2024-06-27 18:17:01,942 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 113 transitions, 774 flow [2024-06-27 18:17:01,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:01,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:01,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:01,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:17:01,943 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:01,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:01,943 INFO L85 PathProgramCache]: Analyzing trace with hash -622652786, now seen corresponding path program 1 times [2024-06-27 18:17:01,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:01,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528800771] [2024-06-27 18:17:01,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:01,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:01,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:03,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:03,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:03,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528800771] [2024-06-27 18:17:03,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528800771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:03,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:03,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:17:03,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272824248] [2024-06-27 18:17:03,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:03,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:17:03,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:03,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:17:03,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:17:03,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:17:03,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 113 transitions, 774 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:03,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:03,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:17:03,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:04,576 INFO L124 PetriNetUnfolderBase]: 4584/7691 cut-off events. [2024-06-27 18:17:04,576 INFO L125 PetriNetUnfolderBase]: For 67213/67221 co-relation queries the response was YES. [2024-06-27 18:17:04,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31215 conditions, 7691 events. 4584/7691 cut-off events. For 67213/67221 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 51156 event pairs, 1557 based on Foata normal form. 2/7428 useless extension candidates. Maximal degree in co-relation 31173. Up to 6384 conditions per place. [2024-06-27 18:17:04,623 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 136 selfloop transitions, 21 changer transitions 0/174 dead transitions. [2024-06-27 18:17:04,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 174 transitions, 1294 flow [2024-06-27 18:17:04,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:04,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:04,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-27 18:17:04,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5351473922902494 [2024-06-27 18:17:04,625 INFO L175 Difference]: Start difference. First operand has 102 places, 113 transitions, 774 flow. Second operand 9 states and 236 transitions. [2024-06-27 18:17:04,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 174 transitions, 1294 flow [2024-06-27 18:17:04,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 174 transitions, 1261 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 18:17:04,663 INFO L231 Difference]: Finished difference. Result has 108 places, 116 transitions, 838 flow [2024-06-27 18:17:04,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=838, PETRI_PLACES=108, PETRI_TRANSITIONS=116} [2024-06-27 18:17:04,664 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 53 predicate places. [2024-06-27 18:17:04,664 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 116 transitions, 838 flow [2024-06-27 18:17:04,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:04,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:04,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:04,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:17:04,664 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:04,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:04,665 INFO L85 PathProgramCache]: Analyzing trace with hash -622562421, now seen corresponding path program 1 times [2024-06-27 18:17:04,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:04,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376258503] [2024-06-27 18:17:04,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:04,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:05,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:05,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:05,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376258503] [2024-06-27 18:17:05,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376258503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:05,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:05,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:17:05,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175498058] [2024-06-27 18:17:05,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:05,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:17:05,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:05,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:17:05,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:17:06,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:06,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 116 transitions, 838 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:06,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:06,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:06,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:07,123 INFO L124 PetriNetUnfolderBase]: 4862/8002 cut-off events. [2024-06-27 18:17:07,123 INFO L125 PetriNetUnfolderBase]: For 76089/76089 co-relation queries the response was YES. [2024-06-27 18:17:07,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33645 conditions, 8002 events. 4862/8002 cut-off events. For 76089/76089 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 51982 event pairs, 1655 based on Foata normal form. 2/7735 useless extension candidates. Maximal degree in co-relation 33602. Up to 6821 conditions per place. [2024-06-27 18:17:07,185 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 137 selfloop transitions, 18 changer transitions 0/166 dead transitions. [2024-06-27 18:17:07,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 166 transitions, 1324 flow [2024-06-27 18:17:07,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:17:07,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:17:07,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-27 18:17:07,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127551020408163 [2024-06-27 18:17:07,187 INFO L175 Difference]: Start difference. First operand has 108 places, 116 transitions, 838 flow. Second operand 8 states and 201 transitions. [2024-06-27 18:17:07,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 166 transitions, 1324 flow [2024-06-27 18:17:07,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 166 transitions, 1253 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 18:17:07,249 INFO L231 Difference]: Finished difference. Result has 109 places, 119 transitions, 859 flow [2024-06-27 18:17:07,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=859, PETRI_PLACES=109, PETRI_TRANSITIONS=119} [2024-06-27 18:17:07,249 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 54 predicate places. [2024-06-27 18:17:07,250 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 119 transitions, 859 flow [2024-06-27 18:17:07,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:07,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:07,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:07,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:17:07,250 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:07,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:07,251 INFO L85 PathProgramCache]: Analyzing trace with hash -618837771, now seen corresponding path program 2 times [2024-06-27 18:17:07,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:07,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502702441] [2024-06-27 18:17:07,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:07,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:08,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:08,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:08,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502702441] [2024-06-27 18:17:08,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502702441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:08,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:08,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:17:08,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410007930] [2024-06-27 18:17:08,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:08,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:17:08,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:08,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:17:08,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:17:08,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:08,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 119 transitions, 859 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:08,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:08,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:08,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:09,426 INFO L124 PetriNetUnfolderBase]: 4918/8076 cut-off events. [2024-06-27 18:17:09,426 INFO L125 PetriNetUnfolderBase]: For 86773/86777 co-relation queries the response was YES. [2024-06-27 18:17:09,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35205 conditions, 8076 events. 4918/8076 cut-off events. For 86773/86777 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 52324 event pairs, 1665 based on Foata normal form. 3/7813 useless extension candidates. Maximal degree in co-relation 35161. Up to 6685 conditions per place. [2024-06-27 18:17:09,480 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 118 selfloop transitions, 47 changer transitions 0/176 dead transitions. [2024-06-27 18:17:09,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 176 transitions, 1607 flow [2024-06-27 18:17:09,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:17:09,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:17:09,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-27 18:17:09,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5331632653061225 [2024-06-27 18:17:09,481 INFO L175 Difference]: Start difference. First operand has 109 places, 119 transitions, 859 flow. Second operand 8 states and 209 transitions. [2024-06-27 18:17:09,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 176 transitions, 1607 flow [2024-06-27 18:17:09,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 176 transitions, 1539 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 18:17:09,550 INFO L231 Difference]: Finished difference. Result has 111 places, 128 transitions, 1043 flow [2024-06-27 18:17:09,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1043, PETRI_PLACES=111, PETRI_TRANSITIONS=128} [2024-06-27 18:17:09,551 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 56 predicate places. [2024-06-27 18:17:09,551 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 128 transitions, 1043 flow [2024-06-27 18:17:09,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:09,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:09,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:09,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:17:09,552 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:09,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:09,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1999981534, now seen corresponding path program 1 times [2024-06-27 18:17:09,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:09,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124000298] [2024-06-27 18:17:09,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:09,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:10,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:10,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:10,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124000298] [2024-06-27 18:17:10,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124000298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:10,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:10,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:17:10,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351870300] [2024-06-27 18:17:10,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:10,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:17:10,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:10,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:17:10,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:17:10,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:10,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 128 transitions, 1043 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:10,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:10,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:10,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:11,856 INFO L124 PetriNetUnfolderBase]: 5001/8208 cut-off events. [2024-06-27 18:17:11,856 INFO L125 PetriNetUnfolderBase]: For 99959/99963 co-relation queries the response was YES. [2024-06-27 18:17:11,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37108 conditions, 8208 events. 5001/8208 cut-off events. For 99959/99963 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 53247 event pairs, 1561 based on Foata normal form. 5/7940 useless extension candidates. Maximal degree in co-relation 37063. Up to 6860 conditions per place. [2024-06-27 18:17:11,908 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 139 selfloop transitions, 36 changer transitions 0/186 dead transitions. [2024-06-27 18:17:11,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 186 transitions, 1703 flow [2024-06-27 18:17:11,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:17:11,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:17:11,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-27 18:17:11,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-06-27 18:17:11,910 INFO L175 Difference]: Start difference. First operand has 111 places, 128 transitions, 1043 flow. Second operand 8 states and 208 transitions. [2024-06-27 18:17:11,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 186 transitions, 1703 flow [2024-06-27 18:17:11,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 186 transitions, 1628 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-27 18:17:11,972 INFO L231 Difference]: Finished difference. Result has 117 places, 138 transitions, 1178 flow [2024-06-27 18:17:11,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=968, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1178, PETRI_PLACES=117, PETRI_TRANSITIONS=138} [2024-06-27 18:17:11,973 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 62 predicate places. [2024-06-27 18:17:11,973 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 138 transitions, 1178 flow [2024-06-27 18:17:11,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:11,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:11,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:11,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:17:11,974 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:11,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:11,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1999975582, now seen corresponding path program 2 times [2024-06-27 18:17:11,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:11,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791115570] [2024-06-27 18:17:11,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:11,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:13,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:13,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:13,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791115570] [2024-06-27 18:17:13,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791115570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:13,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:13,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:17:13,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76058466] [2024-06-27 18:17:13,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:13,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:17:13,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:13,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:17:13,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:17:13,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:17:13,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 138 transitions, 1178 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:13,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:13,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:17:13,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:14,483 INFO L124 PetriNetUnfolderBase]: 4740/7341 cut-off events. [2024-06-27 18:17:14,483 INFO L125 PetriNetUnfolderBase]: For 109212/109220 co-relation queries the response was YES. [2024-06-27 18:17:14,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37074 conditions, 7341 events. 4740/7341 cut-off events. For 109212/109220 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 44589 event pairs, 1284 based on Foata normal form. 8/7291 useless extension candidates. Maximal degree in co-relation 37026. Up to 6468 conditions per place. [2024-06-27 18:17:14,644 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 127 selfloop transitions, 49 changer transitions 0/197 dead transitions. [2024-06-27 18:17:14,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 197 transitions, 1912 flow [2024-06-27 18:17:14,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:17:14,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:17:14,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-27 18:17:14,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-27 18:17:14,645 INFO L175 Difference]: Start difference. First operand has 117 places, 138 transitions, 1178 flow. Second operand 8 states and 210 transitions. [2024-06-27 18:17:14,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 197 transitions, 1912 flow [2024-06-27 18:17:14,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 197 transitions, 1866 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 18:17:14,716 INFO L231 Difference]: Finished difference. Result has 123 places, 151 transitions, 1499 flow [2024-06-27 18:17:14,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1499, PETRI_PLACES=123, PETRI_TRANSITIONS=151} [2024-06-27 18:17:14,717 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 68 predicate places. [2024-06-27 18:17:14,717 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 151 transitions, 1499 flow [2024-06-27 18:17:14,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:14,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:14,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:14,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:17:14,717 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:14,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:14,718 INFO L85 PathProgramCache]: Analyzing trace with hash -173640279, now seen corresponding path program 3 times [2024-06-27 18:17:14,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:14,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097221151] [2024-06-27 18:17:14,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:14,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:15,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:15,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:15,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097221151] [2024-06-27 18:17:15,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097221151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:15,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:15,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:17:15,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048082103] [2024-06-27 18:17:15,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:15,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:17:15,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:15,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:17:15,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:17:15,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:15,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 151 transitions, 1499 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:15,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:15,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:15,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:17,073 INFO L124 PetriNetUnfolderBase]: 5034/8257 cut-off events. [2024-06-27 18:17:17,073 INFO L125 PetriNetUnfolderBase]: For 124862/124866 co-relation queries the response was YES. [2024-06-27 18:17:17,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41031 conditions, 8257 events. 5034/8257 cut-off events. For 124862/124866 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 53572 event pairs, 1594 based on Foata normal form. 3/7990 useless extension candidates. Maximal degree in co-relation 40979. Up to 6847 conditions per place. [2024-06-27 18:17:17,133 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 140 selfloop transitions, 46 changer transitions 0/197 dead transitions. [2024-06-27 18:17:17,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 197 transitions, 2091 flow [2024-06-27 18:17:17,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:17:17,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:17:17,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-27 18:17:17,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-06-27 18:17:17,134 INFO L175 Difference]: Start difference. First operand has 123 places, 151 transitions, 1499 flow. Second operand 8 states and 208 transitions. [2024-06-27 18:17:17,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 197 transitions, 2091 flow [2024-06-27 18:17:17,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 197 transitions, 1912 flow, removed 83 selfloop flow, removed 2 redundant places. [2024-06-27 18:17:17,248 INFO L231 Difference]: Finished difference. Result has 129 places, 151 transitions, 1420 flow [2024-06-27 18:17:17,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1320, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1420, PETRI_PLACES=129, PETRI_TRANSITIONS=151} [2024-06-27 18:17:17,249 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 74 predicate places. [2024-06-27 18:17:17,249 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 151 transitions, 1420 flow [2024-06-27 18:17:17,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:17,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:17,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:17,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:17:17,250 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:17,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:17,251 INFO L85 PathProgramCache]: Analyzing trace with hash -353000919, now seen corresponding path program 4 times [2024-06-27 18:17:17,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:17,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983315910] [2024-06-27 18:17:17,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:17,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:18,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:18,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:18,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983315910] [2024-06-27 18:17:18,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983315910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:18,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:18,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:17:18,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594125973] [2024-06-27 18:17:18,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:18,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:17:18,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:18,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:17:18,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:17:18,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:18,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 151 transitions, 1420 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:18,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:18,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:18,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:19,384 INFO L124 PetriNetUnfolderBase]: 5044/7940 cut-off events. [2024-06-27 18:17:19,384 INFO L125 PetriNetUnfolderBase]: For 131474/131474 co-relation queries the response was YES. [2024-06-27 18:17:19,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41193 conditions, 7940 events. 5044/7940 cut-off events. For 131474/131474 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 49705 event pairs, 1817 based on Foata normal form. 2/7804 useless extension candidates. Maximal degree in co-relation 41139. Up to 7081 conditions per place. [2024-06-27 18:17:19,434 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 160 selfloop transitions, 20 changer transitions 0/191 dead transitions. [2024-06-27 18:17:19,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 191 transitions, 1942 flow [2024-06-27 18:17:19,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:17:19,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:17:19,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 18:17:19,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4923469387755102 [2024-06-27 18:17:19,436 INFO L175 Difference]: Start difference. First operand has 129 places, 151 transitions, 1420 flow. Second operand 8 states and 193 transitions. [2024-06-27 18:17:19,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 191 transitions, 1942 flow [2024-06-27 18:17:19,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 191 transitions, 1826 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 18:17:19,510 INFO L231 Difference]: Finished difference. Result has 130 places, 154 transitions, 1418 flow [2024-06-27 18:17:19,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1418, PETRI_PLACES=130, PETRI_TRANSITIONS=154} [2024-06-27 18:17:19,511 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 75 predicate places. [2024-06-27 18:17:19,511 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 154 transitions, 1418 flow [2024-06-27 18:17:19,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:19,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:19,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:19,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:17:19,512 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:19,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:19,512 INFO L85 PathProgramCache]: Analyzing trace with hash -2059437222, now seen corresponding path program 2 times [2024-06-27 18:17:19,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:19,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485512317] [2024-06-27 18:17:19,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:19,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:20,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:20,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:20,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485512317] [2024-06-27 18:17:20,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485512317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:20,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:20,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:17:20,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635724875] [2024-06-27 18:17:20,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:20,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:17:20,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:20,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:17:20,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:17:20,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:20,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 154 transitions, 1418 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:20,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:20,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:20,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:21,547 INFO L124 PetriNetUnfolderBase]: 5090/8020 cut-off events. [2024-06-27 18:17:21,547 INFO L125 PetriNetUnfolderBase]: For 139767/139767 co-relation queries the response was YES. [2024-06-27 18:17:21,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41702 conditions, 8020 events. 5090/8020 cut-off events. For 139767/139767 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 50306 event pairs, 1823 based on Foata normal form. 4/7884 useless extension candidates. Maximal degree in co-relation 41647. Up to 7132 conditions per place. [2024-06-27 18:17:21,600 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 161 selfloop transitions, 21 changer transitions 0/193 dead transitions. [2024-06-27 18:17:21,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 193 transitions, 1924 flow [2024-06-27 18:17:21,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:17:21,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:17:21,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 18:17:21,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4923469387755102 [2024-06-27 18:17:21,602 INFO L175 Difference]: Start difference. First operand has 130 places, 154 transitions, 1418 flow. Second operand 8 states and 193 transitions. [2024-06-27 18:17:21,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 193 transitions, 1924 flow [2024-06-27 18:17:21,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 193 transitions, 1846 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 18:17:21,694 INFO L231 Difference]: Finished difference. Result has 132 places, 157 transitions, 1444 flow [2024-06-27 18:17:21,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1444, PETRI_PLACES=132, PETRI_TRANSITIONS=157} [2024-06-27 18:17:21,695 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 77 predicate places. [2024-06-27 18:17:21,695 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 157 transitions, 1444 flow [2024-06-27 18:17:21,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:21,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:21,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:21,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:17:21,696 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:21,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:21,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1472097810, now seen corresponding path program 3 times [2024-06-27 18:17:21,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:21,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409670372] [2024-06-27 18:17:21,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:21,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:21,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:22,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:22,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:22,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409670372] [2024-06-27 18:17:22,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409670372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:22,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:22,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:17:22,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111800142] [2024-06-27 18:17:22,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:22,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:17:22,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:22,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:17:22,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:17:22,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:22,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 157 transitions, 1444 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:22,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:22,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:22,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:23,811 INFO L124 PetriNetUnfolderBase]: 5136/8098 cut-off events. [2024-06-27 18:17:23,811 INFO L125 PetriNetUnfolderBase]: For 148450/148450 co-relation queries the response was YES. [2024-06-27 18:17:23,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42441 conditions, 8098 events. 5136/8098 cut-off events. For 148450/148450 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 50868 event pairs, 1822 based on Foata normal form. 4/7960 useless extension candidates. Maximal degree in co-relation 42385. Up to 7147 conditions per place. [2024-06-27 18:17:23,872 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 162 selfloop transitions, 26 changer transitions 0/199 dead transitions. [2024-06-27 18:17:23,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 199 transitions, 1984 flow [2024-06-27 18:17:23,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:17:23,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:17:23,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 18:17:23,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025510204081632 [2024-06-27 18:17:23,874 INFO L175 Difference]: Start difference. First operand has 132 places, 157 transitions, 1444 flow. Second operand 8 states and 197 transitions. [2024-06-27 18:17:23,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 199 transitions, 1984 flow [2024-06-27 18:17:23,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 199 transitions, 1895 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 18:17:23,981 INFO L231 Difference]: Finished difference. Result has 134 places, 160 transitions, 1475 flow [2024-06-27 18:17:23,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1355, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1475, PETRI_PLACES=134, PETRI_TRANSITIONS=160} [2024-06-27 18:17:23,982 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 79 predicate places. [2024-06-27 18:17:23,982 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 160 transitions, 1475 flow [2024-06-27 18:17:23,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:23,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:23,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:23,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:17:23,983 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:23,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:23,983 INFO L85 PathProgramCache]: Analyzing trace with hash -2067978342, now seen corresponding path program 4 times [2024-06-27 18:17:23,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:23,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596556017] [2024-06-27 18:17:23,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:23,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:25,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:25,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:25,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596556017] [2024-06-27 18:17:25,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596556017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:25,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:25,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:17:25,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746720735] [2024-06-27 18:17:25,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:25,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:17:25,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:25,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:17:25,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:17:25,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:25,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 160 transitions, 1475 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:25,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:25,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:25,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:26,208 INFO L124 PetriNetUnfolderBase]: 5126/8075 cut-off events. [2024-06-27 18:17:26,208 INFO L125 PetriNetUnfolderBase]: For 153583/153583 co-relation queries the response was YES. [2024-06-27 18:17:26,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42471 conditions, 8075 events. 5126/8075 cut-off events. For 153583/153583 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 50597 event pairs, 1813 based on Foata normal form. 4/7940 useless extension candidates. Maximal degree in co-relation 42415. Up to 7067 conditions per place. [2024-06-27 18:17:26,280 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 157 selfloop transitions, 33 changer transitions 0/201 dead transitions. [2024-06-27 18:17:26,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 201 transitions, 1977 flow [2024-06-27 18:17:26,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:17:26,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:17:26,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-27 18:17:26,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-06-27 18:17:26,281 INFO L175 Difference]: Start difference. First operand has 134 places, 160 transitions, 1475 flow. Second operand 8 states and 200 transitions. [2024-06-27 18:17:26,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 201 transitions, 1977 flow [2024-06-27 18:17:26,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 201 transitions, 1869 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-27 18:17:26,387 INFO L231 Difference]: Finished difference. Result has 136 places, 160 transitions, 1441 flow [2024-06-27 18:17:26,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1441, PETRI_PLACES=136, PETRI_TRANSITIONS=160} [2024-06-27 18:17:26,388 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 81 predicate places. [2024-06-27 18:17:26,388 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 160 transitions, 1441 flow [2024-06-27 18:17:26,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:26,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:26,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:26,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:17:26,388 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:26,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:26,389 INFO L85 PathProgramCache]: Analyzing trace with hash -2067978559, now seen corresponding path program 5 times [2024-06-27 18:17:26,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:26,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87088788] [2024-06-27 18:17:26,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:26,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:27,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:27,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:27,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87088788] [2024-06-27 18:17:27,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87088788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:27,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:27,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:17:27,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487741538] [2024-06-27 18:17:27,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:27,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:17:27,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:27,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:17:27,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:17:27,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:27,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 160 transitions, 1441 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:27,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:27,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:27,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:28,559 INFO L124 PetriNetUnfolderBase]: 5149/8115 cut-off events. [2024-06-27 18:17:28,559 INFO L125 PetriNetUnfolderBase]: For 158812/158812 co-relation queries the response was YES. [2024-06-27 18:17:28,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42799 conditions, 8115 events. 5149/8115 cut-off events. For 158812/158812 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 50921 event pairs, 1815 based on Foata normal form. 2/7975 useless extension candidates. Maximal degree in co-relation 42742. Up to 7142 conditions per place. [2024-06-27 18:17:28,630 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 161 selfloop transitions, 32 changer transitions 0/204 dead transitions. [2024-06-27 18:17:28,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 204 transitions, 2107 flow [2024-06-27 18:17:28,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:17:28,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:17:28,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-27 18:17:28,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-06-27 18:17:28,631 INFO L175 Difference]: Start difference. First operand has 136 places, 160 transitions, 1441 flow. Second operand 8 states and 200 transitions. [2024-06-27 18:17:28,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 204 transitions, 2107 flow [2024-06-27 18:17:28,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 204 transitions, 1993 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 18:17:28,851 INFO L231 Difference]: Finished difference. Result has 137 places, 163 transitions, 1459 flow [2024-06-27 18:17:28,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1327, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1459, PETRI_PLACES=137, PETRI_TRANSITIONS=163} [2024-06-27 18:17:28,852 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 82 predicate places. [2024-06-27 18:17:28,852 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 163 transitions, 1459 flow [2024-06-27 18:17:28,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:28,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:28,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:28,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:17:28,853 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:28,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:28,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1463846478, now seen corresponding path program 3 times [2024-06-27 18:17:28,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:28,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020444746] [2024-06-27 18:17:28,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:28,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:29,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:29,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:29,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020444746] [2024-06-27 18:17:29,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020444746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:29,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:29,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:17:29,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120721821] [2024-06-27 18:17:29,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:29,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:17:29,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:29,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:17:29,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:17:30,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:17:30,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 163 transitions, 1459 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:30,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:30,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:17:30,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:31,352 INFO L124 PetriNetUnfolderBase]: 4914/7910 cut-off events. [2024-06-27 18:17:31,352 INFO L125 PetriNetUnfolderBase]: For 164912/164964 co-relation queries the response was YES. [2024-06-27 18:17:31,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41558 conditions, 7910 events. 4914/7910 cut-off events. For 164912/164964 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 51033 event pairs, 1709 based on Foata normal form. 4/7751 useless extension candidates. Maximal degree in co-relation 41500. Up to 6824 conditions per place. [2024-06-27 18:17:31,422 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 158 selfloop transitions, 29 changer transitions 0/210 dead transitions. [2024-06-27 18:17:31,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 210 transitions, 2047 flow [2024-06-27 18:17:31,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:17:31,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:17:31,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 18:17:31,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-27 18:17:31,424 INFO L175 Difference]: Start difference. First operand has 137 places, 163 transitions, 1459 flow. Second operand 8 states and 203 transitions. [2024-06-27 18:17:31,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 210 transitions, 2047 flow [2024-06-27 18:17:31,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 210 transitions, 1913 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-27 18:17:31,532 INFO L231 Difference]: Finished difference. Result has 140 places, 169 transitions, 1504 flow [2024-06-27 18:17:31,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1325, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1504, PETRI_PLACES=140, PETRI_TRANSITIONS=169} [2024-06-27 18:17:31,533 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 85 predicate places. [2024-06-27 18:17:31,533 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 169 transitions, 1504 flow [2024-06-27 18:17:31,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:31,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:31,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:31,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:17:31,534 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:31,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:31,534 INFO L85 PathProgramCache]: Analyzing trace with hash -2067984139, now seen corresponding path program 6 times [2024-06-27 18:17:31,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:31,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304972810] [2024-06-27 18:17:31,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:31,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:32,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:32,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:32,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304972810] [2024-06-27 18:17:32,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304972810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:32,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:32,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:17:32,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292578127] [2024-06-27 18:17:32,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:32,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:17:32,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:32,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:17:32,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:17:32,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:32,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 169 transitions, 1504 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:32,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:32,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:32,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:33,943 INFO L124 PetriNetUnfolderBase]: 5144/8098 cut-off events. [2024-06-27 18:17:33,943 INFO L125 PetriNetUnfolderBase]: For 177550/177550 co-relation queries the response was YES. [2024-06-27 18:17:33,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43835 conditions, 8098 events. 5144/8098 cut-off events. For 177550/177550 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 50786 event pairs, 1814 based on Foata normal form. 2/7961 useless extension candidates. Maximal degree in co-relation 43775. Up to 7137 conditions per place. [2024-06-27 18:17:33,999 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 164 selfloop transitions, 33 changer transitions 0/208 dead transitions. [2024-06-27 18:17:34,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 208 transitions, 2012 flow [2024-06-27 18:17:34,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:17:34,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:17:34,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 18:17:34,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025510204081632 [2024-06-27 18:17:34,001 INFO L175 Difference]: Start difference. First operand has 140 places, 169 transitions, 1504 flow. Second operand 8 states and 197 transitions. [2024-06-27 18:17:34,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 208 transitions, 2012 flow [2024-06-27 18:17:34,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 208 transitions, 1825 flow, removed 59 selfloop flow, removed 6 redundant places. [2024-06-27 18:17:34,110 INFO L231 Difference]: Finished difference. Result has 142 places, 169 transitions, 1391 flow [2024-06-27 18:17:34,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1317, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1391, PETRI_PLACES=142, PETRI_TRANSITIONS=169} [2024-06-27 18:17:34,111 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 87 predicate places. [2024-06-27 18:17:34,111 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 169 transitions, 1391 flow [2024-06-27 18:17:34,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:34,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:34,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:34,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:17:34,111 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:34,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:34,112 INFO L85 PathProgramCache]: Analyzing trace with hash -6335836, now seen corresponding path program 1 times [2024-06-27 18:17:34,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:34,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227928750] [2024-06-27 18:17:34,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:34,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:34,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:34,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:34,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227928750] [2024-06-27 18:17:34,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227928750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:34,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:34,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:17:34,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772276565] [2024-06-27 18:17:34,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:34,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:17:34,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:34,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:17:34,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:17:34,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:34,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 169 transitions, 1391 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 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) [2024-06-27 18:17:34,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:34,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:34,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:36,043 INFO L124 PetriNetUnfolderBase]: 5772/9087 cut-off events. [2024-06-27 18:17:36,043 INFO L125 PetriNetUnfolderBase]: For 196170/196224 co-relation queries the response was YES. [2024-06-27 18:17:36,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45920 conditions, 9087 events. 5772/9087 cut-off events. For 196170/196224 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 57499 event pairs, 2374 based on Foata normal form. 15/8948 useless extension candidates. Maximal degree in co-relation 45860. Up to 8167 conditions per place. [2024-06-27 18:17:36,122 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 146 selfloop transitions, 14 changer transitions 0/194 dead transitions. [2024-06-27 18:17:36,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 194 transitions, 1801 flow [2024-06-27 18:17:36,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:17:36,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:17:36,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-27 18:17:36,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48639455782312924 [2024-06-27 18:17:36,123 INFO L175 Difference]: Start difference. First operand has 142 places, 169 transitions, 1391 flow. Second operand 6 states and 143 transitions. [2024-06-27 18:17:36,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 194 transitions, 1801 flow [2024-06-27 18:17:36,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 194 transitions, 1727 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 18:17:36,416 INFO L231 Difference]: Finished difference. Result has 141 places, 172 transitions, 1383 flow [2024-06-27 18:17:36,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1317, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1383, PETRI_PLACES=141, PETRI_TRANSITIONS=172} [2024-06-27 18:17:36,416 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 86 predicate places. [2024-06-27 18:17:36,416 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 172 transitions, 1383 flow [2024-06-27 18:17:36,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 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) [2024-06-27 18:17:36,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:36,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:36,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:17:36,417 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:36,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:36,417 INFO L85 PathProgramCache]: Analyzing trace with hash -2122426069, now seen corresponding path program 1 times [2024-06-27 18:17:36,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:36,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915102857] [2024-06-27 18:17:36,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:36,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:37,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:37,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:37,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915102857] [2024-06-27 18:17:37,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915102857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:37,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:37,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:37,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057879507] [2024-06-27 18:17:37,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:37,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:37,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:37,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:37,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:38,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:17:38,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 172 transitions, 1383 flow. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:38,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:38,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:17:38,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:39,584 INFO L124 PetriNetUnfolderBase]: 4955/7860 cut-off events. [2024-06-27 18:17:39,585 INFO L125 PetriNetUnfolderBase]: For 188527/188553 co-relation queries the response was YES. [2024-06-27 18:17:39,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43184 conditions, 7860 events. 4955/7860 cut-off events. For 188527/188553 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 49704 event pairs, 1105 based on Foata normal form. 8/7729 useless extension candidates. Maximal degree in co-relation 43123. Up to 6722 conditions per place. [2024-06-27 18:17:39,639 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 199 selfloop transitions, 26 changer transitions 0/248 dead transitions. [2024-06-27 18:17:39,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 248 transitions, 2265 flow [2024-06-27 18:17:39,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:17:39,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:17:39,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 265 transitions. [2024-06-27 18:17:39,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5408163265306123 [2024-06-27 18:17:39,641 INFO L175 Difference]: Start difference. First operand has 141 places, 172 transitions, 1383 flow. Second operand 10 states and 265 transitions. [2024-06-27 18:17:39,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 248 transitions, 2265 flow [2024-06-27 18:17:39,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 248 transitions, 2221 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 18:17:39,763 INFO L231 Difference]: Finished difference. Result has 148 places, 178 transitions, 1518 flow [2024-06-27 18:17:39,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1339, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1518, PETRI_PLACES=148, PETRI_TRANSITIONS=178} [2024-06-27 18:17:39,763 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 93 predicate places. [2024-06-27 18:17:39,763 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 178 transitions, 1518 flow [2024-06-27 18:17:39,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:39,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:39,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:39,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:17:39,764 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:39,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:39,764 INFO L85 PathProgramCache]: Analyzing trace with hash -2122365619, now seen corresponding path program 2 times [2024-06-27 18:17:39,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:39,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523865130] [2024-06-27 18:17:39,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:39,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:41,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:41,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:41,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523865130] [2024-06-27 18:17:41,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523865130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:41,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:41,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:41,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752614492] [2024-06-27 18:17:41,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:41,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:41,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:41,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:41,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:41,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:17:41,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 178 transitions, 1518 flow. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:41,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:41,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:17:41,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:42,897 INFO L124 PetriNetUnfolderBase]: 4944/7836 cut-off events. [2024-06-27 18:17:42,897 INFO L125 PetriNetUnfolderBase]: For 199495/199521 co-relation queries the response was YES. [2024-06-27 18:17:42,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43771 conditions, 7836 events. 4944/7836 cut-off events. For 199495/199521 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 49390 event pairs, 1414 based on Foata normal form. 8/7708 useless extension candidates. Maximal degree in co-relation 43708. Up to 6800 conditions per place. [2024-06-27 18:17:42,962 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 199 selfloop transitions, 23 changer transitions 0/245 dead transitions. [2024-06-27 18:17:42,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 245 transitions, 2166 flow [2024-06-27 18:17:42,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:17:42,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:17:42,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 261 transitions. [2024-06-27 18:17:42,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5326530612244897 [2024-06-27 18:17:42,964 INFO L175 Difference]: Start difference. First operand has 148 places, 178 transitions, 1518 flow. Second operand 10 states and 261 transitions. [2024-06-27 18:17:42,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 245 transitions, 2166 flow [2024-06-27 18:17:43,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 245 transitions, 2054 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-27 18:17:43,128 INFO L231 Difference]: Finished difference. Result has 152 places, 178 transitions, 1459 flow [2024-06-27 18:17:43,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1406, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1459, PETRI_PLACES=152, PETRI_TRANSITIONS=178} [2024-06-27 18:17:43,129 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 97 predicate places. [2024-06-27 18:17:43,129 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 178 transitions, 1459 flow [2024-06-27 18:17:43,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:43,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:43,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:43,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:17:43,130 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:43,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:43,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1205972151, now seen corresponding path program 1 times [2024-06-27 18:17:43,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:43,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643742455] [2024-06-27 18:17:43,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:43,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:44,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:44,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:44,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643742455] [2024-06-27 18:17:44,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643742455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:44,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:44,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:44,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347887391] [2024-06-27 18:17:44,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:44,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:44,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:44,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:44,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:44,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:44,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 178 transitions, 1459 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:44,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:44,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:44,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:46,257 INFO L124 PetriNetUnfolderBase]: 5217/8124 cut-off events. [2024-06-27 18:17:46,258 INFO L125 PetriNetUnfolderBase]: For 207786/207790 co-relation queries the response was YES. [2024-06-27 18:17:46,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45296 conditions, 8124 events. 5217/8124 cut-off events. For 207786/207790 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 50113 event pairs, 1477 based on Foata normal form. 6/7999 useless extension candidates. Maximal degree in co-relation 45231. Up to 7235 conditions per place. [2024-06-27 18:17:46,338 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 217 selfloop transitions, 27 changer transitions 0/255 dead transitions. [2024-06-27 18:17:46,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 255 transitions, 2233 flow [2024-06-27 18:17:46,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:17:46,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:17:46,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 276 transitions. [2024-06-27 18:17:46,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120593692022264 [2024-06-27 18:17:46,339 INFO L175 Difference]: Start difference. First operand has 152 places, 178 transitions, 1459 flow. Second operand 11 states and 276 transitions. [2024-06-27 18:17:46,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 255 transitions, 2233 flow [2024-06-27 18:17:46,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 255 transitions, 2188 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 18:17:46,491 INFO L231 Difference]: Finished difference. Result has 155 places, 181 transitions, 1541 flow [2024-06-27 18:17:46,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1414, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1541, PETRI_PLACES=155, PETRI_TRANSITIONS=181} [2024-06-27 18:17:46,491 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 100 predicate places. [2024-06-27 18:17:46,491 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 181 transitions, 1541 flow [2024-06-27 18:17:46,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:46,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:46,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:46,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:17:46,492 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:46,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:46,492 INFO L85 PathProgramCache]: Analyzing trace with hash -2119564149, now seen corresponding path program 1 times [2024-06-27 18:17:46,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:46,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666690521] [2024-06-27 18:17:46,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:46,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:47,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:47,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:47,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666690521] [2024-06-27 18:17:47,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666690521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:47,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:47,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:47,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586940514] [2024-06-27 18:17:47,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:47,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:47,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:47,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:47,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:47,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:47,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 181 transitions, 1541 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:47,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:47,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:47,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:49,026 INFO L124 PetriNetUnfolderBase]: 5273/8226 cut-off events. [2024-06-27 18:17:49,027 INFO L125 PetriNetUnfolderBase]: For 225937/225941 co-relation queries the response was YES. [2024-06-27 18:17:49,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46924 conditions, 8226 events. 5273/8226 cut-off events. For 225937/225941 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 50811 event pairs, 1462 based on Foata normal form. 8/8089 useless extension candidates. Maximal degree in co-relation 46858. Up to 7355 conditions per place. [2024-06-27 18:17:49,102 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 208 selfloop transitions, 21 changer transitions 0/240 dead transitions. [2024-06-27 18:17:49,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 240 transitions, 2227 flow [2024-06-27 18:17:49,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:49,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:49,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-27 18:17:49,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124716553287982 [2024-06-27 18:17:49,104 INFO L175 Difference]: Start difference. First operand has 155 places, 181 transitions, 1541 flow. Second operand 9 states and 226 transitions. [2024-06-27 18:17:49,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 240 transitions, 2227 flow [2024-06-27 18:17:49,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 240 transitions, 2126 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-27 18:17:49,251 INFO L231 Difference]: Finished difference. Result has 155 places, 184 transitions, 1552 flow [2024-06-27 18:17:49,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1440, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1552, PETRI_PLACES=155, PETRI_TRANSITIONS=184} [2024-06-27 18:17:49,252 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 100 predicate places. [2024-06-27 18:17:49,252 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 184 transitions, 1552 flow [2024-06-27 18:17:49,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:49,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:49,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:49,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:17:49,253 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:49,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:49,253 INFO L85 PathProgramCache]: Analyzing trace with hash -2004099999, now seen corresponding path program 2 times [2024-06-27 18:17:49,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:49,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225683054] [2024-06-27 18:17:49,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:49,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:50,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:50,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225683054] [2024-06-27 18:17:50,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225683054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:50,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:50,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:50,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549126225] [2024-06-27 18:17:50,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:50,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:50,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:50,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:50,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:50,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:50,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 184 transitions, 1552 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:50,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:50,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:50,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:51,737 INFO L124 PetriNetUnfolderBase]: 5464/8505 cut-off events. [2024-06-27 18:17:51,737 INFO L125 PetriNetUnfolderBase]: For 254112/254120 co-relation queries the response was YES. [2024-06-27 18:17:51,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50299 conditions, 8505 events. 5464/8505 cut-off events. For 254112/254120 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 52645 event pairs, 1408 based on Foata normal form. 9/8374 useless extension candidates. Maximal degree in co-relation 50232. Up to 7013 conditions per place. [2024-06-27 18:17:51,823 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 175 selfloop transitions, 72 changer transitions 0/258 dead transitions. [2024-06-27 18:17:51,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 258 transitions, 2878 flow [2024-06-27 18:17:51,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:51,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:51,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-27 18:17:51,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-06-27 18:17:51,825 INFO L175 Difference]: Start difference. First operand has 155 places, 184 transitions, 1552 flow. Second operand 9 states and 243 transitions. [2024-06-27 18:17:51,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 258 transitions, 2878 flow [2024-06-27 18:17:51,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 258 transitions, 2790 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 18:17:51,991 INFO L231 Difference]: Finished difference. Result has 157 places, 196 transitions, 1870 flow [2024-06-27 18:17:51,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1464, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1870, PETRI_PLACES=157, PETRI_TRANSITIONS=196} [2024-06-27 18:17:51,992 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 102 predicate places. [2024-06-27 18:17:51,992 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 196 transitions, 1870 flow [2024-06-27 18:17:51,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:51,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:51,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:51,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:17:51,992 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:51,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:51,993 INFO L85 PathProgramCache]: Analyzing trace with hash -2004100185, now seen corresponding path program 2 times [2024-06-27 18:17:51,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:51,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943115931] [2024-06-27 18:17:51,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:51,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:53,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:53,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:53,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943115931] [2024-06-27 18:17:53,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943115931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:53,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:53,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:53,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645154424] [2024-06-27 18:17:53,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:53,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:53,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:53,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:53,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:53,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:53,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 196 transitions, 1870 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:53,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:53,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:53,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:54,786 INFO L124 PetriNetUnfolderBase]: 5472/8270 cut-off events. [2024-06-27 18:17:54,787 INFO L125 PetriNetUnfolderBase]: For 269754/269762 co-relation queries the response was YES. [2024-06-27 18:17:54,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51594 conditions, 8270 events. 5472/8270 cut-off events. For 269754/269762 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 48975 event pairs, 1269 based on Foata normal form. 7/8229 useless extension candidates. Maximal degree in co-relation 51526. Up to 7365 conditions per place. [2024-06-27 18:17:54,851 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 168 selfloop transitions, 84 changer transitions 0/263 dead transitions. [2024-06-27 18:17:54,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 263 transitions, 2842 flow [2024-06-27 18:17:54,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:54,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:54,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-27 18:17:54,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215419501133787 [2024-06-27 18:17:54,853 INFO L175 Difference]: Start difference. First operand has 157 places, 196 transitions, 1870 flow. Second operand 9 states and 230 transitions. [2024-06-27 18:17:54,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 263 transitions, 2842 flow [2024-06-27 18:17:55,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 263 transitions, 2734 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-06-27 18:17:55,062 INFO L231 Difference]: Finished difference. Result has 164 places, 209 transitions, 2259 flow [2024-06-27 18:17:55,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1762, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2259, PETRI_PLACES=164, PETRI_TRANSITIONS=209} [2024-06-27 18:17:55,062 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 109 predicate places. [2024-06-27 18:17:55,062 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 209 transitions, 2259 flow [2024-06-27 18:17:55,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:55,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:55,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:55,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:17:55,063 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:55,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:55,063 INFO L85 PathProgramCache]: Analyzing trace with hash -2004272979, now seen corresponding path program 3 times [2024-06-27 18:17:55,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:55,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545196226] [2024-06-27 18:17:55,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:55,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:56,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:56,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:56,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545196226] [2024-06-27 18:17:56,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545196226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:56,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:56,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:56,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450791461] [2024-06-27 18:17:56,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:56,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:56,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:56,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:56,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:56,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:56,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 209 transitions, 2259 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:56,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:56,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:56,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:57,524 INFO L124 PetriNetUnfolderBase]: 5492/8540 cut-off events. [2024-06-27 18:17:57,524 INFO L125 PetriNetUnfolderBase]: For 286702/286710 co-relation queries the response was YES. [2024-06-27 18:17:57,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53473 conditions, 8540 events. 5492/8540 cut-off events. For 286702/286710 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 52757 event pairs, 1418 based on Foata normal form. 9/8408 useless extension candidates. Maximal degree in co-relation 53402. Up to 7058 conditions per place. [2024-06-27 18:17:57,597 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 187 selfloop transitions, 71 changer transitions 0/269 dead transitions. [2024-06-27 18:17:57,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 269 transitions, 3239 flow [2024-06-27 18:17:57,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:57,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:57,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 242 transitions. [2024-06-27 18:17:57,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5487528344671202 [2024-06-27 18:17:57,599 INFO L175 Difference]: Start difference. First operand has 164 places, 209 transitions, 2259 flow. Second operand 9 states and 242 transitions. [2024-06-27 18:17:57,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 269 transitions, 3239 flow [2024-06-27 18:17:57,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 269 transitions, 2978 flow, removed 113 selfloop flow, removed 3 redundant places. [2024-06-27 18:17:57,888 INFO L231 Difference]: Finished difference. Result has 170 places, 209 transitions, 2148 flow [2024-06-27 18:17:57,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1998, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2148, PETRI_PLACES=170, PETRI_TRANSITIONS=209} [2024-06-27 18:17:57,888 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 115 predicate places. [2024-06-27 18:17:57,888 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 209 transitions, 2148 flow [2024-06-27 18:17:57,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:57,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:57,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:57,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:17:57,889 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:57,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:57,889 INFO L85 PathProgramCache]: Analyzing trace with hash -2004093489, now seen corresponding path program 4 times [2024-06-27 18:17:57,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:57,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865097718] [2024-06-27 18:17:57,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:57,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:59,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:59,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:59,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865097718] [2024-06-27 18:17:59,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865097718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:59,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:59,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:59,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069103816] [2024-06-27 18:17:59,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:59,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:59,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:59,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:59,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:59,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:59,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 209 transitions, 2148 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:59,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:59,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:59,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:00,563 INFO L124 PetriNetUnfolderBase]: 5482/8533 cut-off events. [2024-06-27 18:18:00,563 INFO L125 PetriNetUnfolderBase]: For 291979/291987 co-relation queries the response was YES. [2024-06-27 18:18:00,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53595 conditions, 8533 events. 5482/8533 cut-off events. For 291979/291987 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 52808 event pairs, 1409 based on Foata normal form. 9/8401 useless extension candidates. Maximal degree in co-relation 53522. Up to 7050 conditions per place. [2024-06-27 18:18:00,640 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 181 selfloop transitions, 74 changer transitions 0/266 dead transitions. [2024-06-27 18:18:00,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 266 transitions, 2978 flow [2024-06-27 18:18:00,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:18:00,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:18:00,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-27 18:18:00,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5374149659863946 [2024-06-27 18:18:00,642 INFO L175 Difference]: Start difference. First operand has 170 places, 209 transitions, 2148 flow. Second operand 9 states and 237 transitions. [2024-06-27 18:18:00,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 266 transitions, 2978 flow [2024-06-27 18:18:00,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 266 transitions, 2766 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-27 18:18:00,906 INFO L231 Difference]: Finished difference. Result has 171 places, 209 transitions, 2092 flow [2024-06-27 18:18:00,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1936, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2092, PETRI_PLACES=171, PETRI_TRANSITIONS=209} [2024-06-27 18:18:00,906 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 116 predicate places. [2024-06-27 18:18:00,906 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 209 transitions, 2092 flow [2024-06-27 18:18:00,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:00,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:00,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:00,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:18:00,907 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:00,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:00,907 INFO L85 PathProgramCache]: Analyzing trace with hash -2004273165, now seen corresponding path program 3 times [2024-06-27 18:18:00,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:00,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510335979] [2024-06-27 18:18:00,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:00,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:02,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:02,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:02,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510335979] [2024-06-27 18:18:02,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510335979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:02,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:02,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:18:02,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732261057] [2024-06-27 18:18:02,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:02,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:18:02,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:02,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:18:02,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:18:02,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:02,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 209 transitions, 2092 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:02,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:02,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:02,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:03,726 INFO L124 PetriNetUnfolderBase]: 5480/8272 cut-off events. [2024-06-27 18:18:03,726 INFO L125 PetriNetUnfolderBase]: For 299498/299506 co-relation queries the response was YES. [2024-06-27 18:18:03,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53431 conditions, 8272 events. 5480/8272 cut-off events. For 299498/299506 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 49000 event pairs, 1274 based on Foata normal form. 7/8231 useless extension candidates. Maximal degree in co-relation 53357. Up to 7375 conditions per place. [2024-06-27 18:18:03,802 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 172 selfloop transitions, 86 changer transitions 0/269 dead transitions. [2024-06-27 18:18:03,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 269 transitions, 2897 flow [2024-06-27 18:18:03,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:18:03,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:18:03,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 231 transitions. [2024-06-27 18:18:03,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-27 18:18:03,804 INFO L175 Difference]: Start difference. First operand has 171 places, 209 transitions, 2092 flow. Second operand 9 states and 231 transitions. [2024-06-27 18:18:03,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 269 transitions, 2897 flow [2024-06-27 18:18:04,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 269 transitions, 2770 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 18:18:04,117 INFO L231 Difference]: Finished difference. Result has 173 places, 215 transitions, 2263 flow [2024-06-27 18:18:04,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1965, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2263, PETRI_PLACES=173, PETRI_TRANSITIONS=215} [2024-06-27 18:18:04,118 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 118 predicate places. [2024-06-27 18:18:04,118 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 215 transitions, 2263 flow [2024-06-27 18:18:04,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:04,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:04,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:04,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:18:04,119 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:04,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:04,119 INFO L85 PathProgramCache]: Analyzing trace with hash -2004277815, now seen corresponding path program 4 times [2024-06-27 18:18:04,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:04,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473860335] [2024-06-27 18:18:04,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:04,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:05,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:05,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:05,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473860335] [2024-06-27 18:18:05,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473860335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:05,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:05,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:18:05,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794848949] [2024-06-27 18:18:05,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:05,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:18:05,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:05,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:18:05,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:18:05,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:05,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 215 transitions, 2263 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:05,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:05,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:05,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:06,969 INFO L124 PetriNetUnfolderBase]: 5541/8597 cut-off events. [2024-06-27 18:18:06,969 INFO L125 PetriNetUnfolderBase]: For 321292/321300 co-relation queries the response was YES. [2024-06-27 18:18:07,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55235 conditions, 8597 events. 5541/8597 cut-off events. For 321292/321300 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 53110 event pairs, 1490 based on Foata normal form. 7/8467 useless extension candidates. Maximal degree in co-relation 55160. Up to 7467 conditions per place. [2024-06-27 18:18:07,044 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 212 selfloop transitions, 64 changer transitions 0/287 dead transitions. [2024-06-27 18:18:07,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 287 transitions, 3194 flow [2024-06-27 18:18:07,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:18:07,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:18:07,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 255 transitions. [2024-06-27 18:18:07,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204081632653061 [2024-06-27 18:18:07,046 INFO L175 Difference]: Start difference. First operand has 173 places, 215 transitions, 2263 flow. Second operand 10 states and 255 transitions. [2024-06-27 18:18:07,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 287 transitions, 3194 flow [2024-06-27 18:18:07,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 287 transitions, 2905 flow, removed 74 selfloop flow, removed 5 redundant places. [2024-06-27 18:18:07,328 INFO L231 Difference]: Finished difference. Result has 179 places, 227 transitions, 2339 flow [2024-06-27 18:18:07,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2045, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2339, PETRI_PLACES=179, PETRI_TRANSITIONS=227} [2024-06-27 18:18:07,329 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 124 predicate places. [2024-06-27 18:18:07,329 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 227 transitions, 2339 flow [2024-06-27 18:18:07,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:07,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:07,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:07,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:18:07,330 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:07,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:07,330 INFO L85 PathProgramCache]: Analyzing trace with hash -2004277939, now seen corresponding path program 3 times [2024-06-27 18:18:07,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:07,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008612769] [2024-06-27 18:18:07,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:07,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:08,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:08,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:08,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008612769] [2024-06-27 18:18:08,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008612769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:08,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:08,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:18:08,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362852708] [2024-06-27 18:18:08,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:08,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:18:08,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:08,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:18:08,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:18:08,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:18:08,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 227 transitions, 2339 flow. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:08,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:08,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:18:08,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:10,314 INFO L124 PetriNetUnfolderBase]: 5292/8113 cut-off events. [2024-06-27 18:18:10,314 INFO L125 PetriNetUnfolderBase]: For 336694/336704 co-relation queries the response was YES. [2024-06-27 18:18:10,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54046 conditions, 8113 events. 5292/8113 cut-off events. For 336694/336704 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 49110 event pairs, 1191 based on Foata normal form. 12/8077 useless extension candidates. Maximal degree in co-relation 53969. Up to 7147 conditions per place. [2024-06-27 18:18:10,375 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 194 selfloop transitions, 56 changer transitions 0/283 dead transitions. [2024-06-27 18:18:10,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 283 transitions, 3067 flow [2024-06-27 18:18:10,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:18:10,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:18:10,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-06-27 18:18:10,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5328798185941043 [2024-06-27 18:18:10,377 INFO L175 Difference]: Start difference. First operand has 179 places, 227 transitions, 2339 flow. Second operand 9 states and 235 transitions. [2024-06-27 18:18:10,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 283 transitions, 3067 flow [2024-06-27 18:18:10,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 283 transitions, 2887 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-27 18:18:10,670 INFO L231 Difference]: Finished difference. Result has 181 places, 229 transitions, 2347 flow [2024-06-27 18:18:10,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2159, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2347, PETRI_PLACES=181, PETRI_TRANSITIONS=229} [2024-06-27 18:18:10,671 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 126 predicate places. [2024-06-27 18:18:10,671 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 229 transitions, 2347 flow [2024-06-27 18:18:10,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:10,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:10,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:10,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:18:10,672 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:10,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:10,673 INFO L85 PathProgramCache]: Analyzing trace with hash -653971863, now seen corresponding path program 1 times [2024-06-27 18:18:10,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:10,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128393914] [2024-06-27 18:18:10,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:10,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:11,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:11,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:11,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128393914] [2024-06-27 18:18:11,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128393914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:11,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:11,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:18:11,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584562930] [2024-06-27 18:18:11,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:11,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:18:11,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:11,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:18:11,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:18:11,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:11,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 229 transitions, 2347 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 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) [2024-06-27 18:18:11,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:11,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:11,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:12,830 INFO L124 PetriNetUnfolderBase]: 6312/9906 cut-off events. [2024-06-27 18:18:12,830 INFO L125 PetriNetUnfolderBase]: For 396209/396266 co-relation queries the response was YES. [2024-06-27 18:18:12,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61584 conditions, 9906 events. 6312/9906 cut-off events. For 396209/396266 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 63146 event pairs, 2010 based on Foata normal form. 12/9705 useless extension candidates. Maximal degree in co-relation 61506. Up to 8832 conditions per place. [2024-06-27 18:18:12,926 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 200 selfloop transitions, 20 changer transitions 0/265 dead transitions. [2024-06-27 18:18:12,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 265 transitions, 3041 flow [2024-06-27 18:18:12,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:18:12,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:18:12,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-27 18:18:12,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5068027210884354 [2024-06-27 18:18:12,927 INFO L175 Difference]: Start difference. First operand has 181 places, 229 transitions, 2347 flow. Second operand 6 states and 149 transitions. [2024-06-27 18:18:12,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 265 transitions, 3041 flow [2024-06-27 18:18:13,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 265 transitions, 2873 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-27 18:18:13,213 INFO L231 Difference]: Finished difference. Result has 181 places, 239 transitions, 2344 flow [2024-06-27 18:18:13,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2179, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2344, PETRI_PLACES=181, PETRI_TRANSITIONS=239} [2024-06-27 18:18:13,214 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 126 predicate places. [2024-06-27 18:18:13,214 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 239 transitions, 2344 flow [2024-06-27 18:18:13,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 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) [2024-06-27 18:18:13,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:13,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:13,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:18:13,214 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:13,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:13,215 INFO L85 PathProgramCache]: Analyzing trace with hash -922240501, now seen corresponding path program 5 times [2024-06-27 18:18:13,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:13,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524086715] [2024-06-27 18:18:13,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:13,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:14,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:14,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:14,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524086715] [2024-06-27 18:18:14,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524086715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:14,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:14,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:18:14,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106413640] [2024-06-27 18:18:14,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:14,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:18:14,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:14,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:18:14,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:18:14,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:14,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 239 transitions, 2344 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:14,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:14,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:14,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:15,813 INFO L124 PetriNetUnfolderBase]: 5731/8965 cut-off events. [2024-06-27 18:18:15,813 INFO L125 PetriNetUnfolderBase]: For 378830/378850 co-relation queries the response was YES. [2024-06-27 18:18:15,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59498 conditions, 8965 events. 5731/8965 cut-off events. For 378830/378850 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 56473 event pairs, 1745 based on Foata normal form. 4/8806 useless extension candidates. Maximal degree in co-relation 59418. Up to 7695 conditions per place. [2024-06-27 18:18:15,900 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 233 selfloop transitions, 47 changer transitions 0/294 dead transitions. [2024-06-27 18:18:15,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 294 transitions, 3301 flow [2024-06-27 18:18:15,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:18:15,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:18:15,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-27 18:18:15,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192743764172335 [2024-06-27 18:18:15,901 INFO L175 Difference]: Start difference. First operand has 181 places, 239 transitions, 2344 flow. Second operand 9 states and 229 transitions. [2024-06-27 18:18:15,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 294 transitions, 3301 flow [2024-06-27 18:18:16,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 294 transitions, 3269 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-06-27 18:18:16,215 INFO L231 Difference]: Finished difference. Result has 189 places, 242 transitions, 2485 flow [2024-06-27 18:18:16,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2312, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2485, PETRI_PLACES=189, PETRI_TRANSITIONS=242} [2024-06-27 18:18:16,216 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 134 predicate places. [2024-06-27 18:18:16,216 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 242 transitions, 2485 flow [2024-06-27 18:18:16,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:16,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:16,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:16,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:18:16,217 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:16,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:16,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1865397875, now seen corresponding path program 4 times [2024-06-27 18:18:16,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:16,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521151402] [2024-06-27 18:18:16,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:16,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:16,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:17,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:17,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:17,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521151402] [2024-06-27 18:18:17,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521151402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:17,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:17,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:18:17,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888514999] [2024-06-27 18:18:17,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:17,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:18:17,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:17,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:18:17,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:18:17,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:18:17,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 242 transitions, 2485 flow. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:17,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:17,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:18:17,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:19,078 INFO L124 PetriNetUnfolderBase]: 5478/8702 cut-off events. [2024-06-27 18:18:19,078 INFO L125 PetriNetUnfolderBase]: For 387066/387156 co-relation queries the response was YES. [2024-06-27 18:18:19,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57970 conditions, 8702 events. 5478/8702 cut-off events. For 387066/387156 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 55928 event pairs, 1645 based on Foata normal form. 4/8526 useless extension candidates. Maximal degree in co-relation 57887. Up to 7521 conditions per place. [2024-06-27 18:18:19,157 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 227 selfloop transitions, 31 changer transitions 0/294 dead transitions. [2024-06-27 18:18:19,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 294 transitions, 3223 flow [2024-06-27 18:18:19,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:18:19,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:18:19,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-27 18:18:19,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170068027210885 [2024-06-27 18:18:19,159 INFO L175 Difference]: Start difference. First operand has 189 places, 242 transitions, 2485 flow. Second operand 9 states and 228 transitions. [2024-06-27 18:18:19,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 294 transitions, 3223 flow [2024-06-27 18:18:19,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 294 transitions, 3017 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-27 18:18:19,503 INFO L231 Difference]: Finished difference. Result has 190 places, 244 transitions, 2420 flow [2024-06-27 18:18:19,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2279, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2420, PETRI_PLACES=190, PETRI_TRANSITIONS=244} [2024-06-27 18:18:19,504 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 135 predicate places. [2024-06-27 18:18:19,504 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 244 transitions, 2420 flow [2024-06-27 18:18:19,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:19,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:19,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:19,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:18:19,505 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:19,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:19,505 INFO L85 PathProgramCache]: Analyzing trace with hash 316998013, now seen corresponding path program 5 times [2024-06-27 18:18:19,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:19,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338415299] [2024-06-27 18:18:19,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:19,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:20,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:20,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:20,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338415299] [2024-06-27 18:18:20,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338415299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:20,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:20,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:18:20,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363523750] [2024-06-27 18:18:20,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:20,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:18:20,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:20,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:18:20,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:18:20,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:20,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 244 transitions, 2420 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:20,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:20,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:20,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:22,521 INFO L124 PetriNetUnfolderBase]: 5764/9010 cut-off events. [2024-06-27 18:18:22,521 INFO L125 PetriNetUnfolderBase]: For 401524/401536 co-relation queries the response was YES. [2024-06-27 18:18:22,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60572 conditions, 9010 events. 5764/9010 cut-off events. For 401524/401536 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 56683 event pairs, 1741 based on Foata normal form. 2/8849 useless extension candidates. Maximal degree in co-relation 60488. Up to 7920 conditions per place. [2024-06-27 18:18:22,604 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 254 selfloop transitions, 42 changer transitions 0/310 dead transitions. [2024-06-27 18:18:22,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 310 transitions, 3561 flow [2024-06-27 18:18:22,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:18:22,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:18:22,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2024-06-27 18:18:22,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061224489795918 [2024-06-27 18:18:22,606 INFO L175 Difference]: Start difference. First operand has 190 places, 244 transitions, 2420 flow. Second operand 10 states and 248 transitions. [2024-06-27 18:18:22,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 310 transitions, 3561 flow [2024-06-27 18:18:22,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 310 transitions, 3433 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-27 18:18:22,977 INFO L231 Difference]: Finished difference. Result has 194 places, 253 transitions, 2605 flow [2024-06-27 18:18:22,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2297, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2605, PETRI_PLACES=194, PETRI_TRANSITIONS=253} [2024-06-27 18:18:22,978 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 139 predicate places. [2024-06-27 18:18:22,978 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 253 transitions, 2605 flow [2024-06-27 18:18:22,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:22,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:22,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:22,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:18:22,979 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:22,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:22,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1865219935, now seen corresponding path program 6 times [2024-06-27 18:18:22,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:22,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576893947] [2024-06-27 18:18:22,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:22,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:24,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:24,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:24,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576893947] [2024-06-27 18:18:24,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576893947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:24,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:24,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:18:24,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993009102] [2024-06-27 18:18:24,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:24,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:18:24,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:24,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:18:24,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:18:24,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:24,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 253 transitions, 2605 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:24,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:24,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:24,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:25,795 INFO L124 PetriNetUnfolderBase]: 5866/9156 cut-off events. [2024-06-27 18:18:25,795 INFO L125 PetriNetUnfolderBase]: For 428184/428196 co-relation queries the response was YES. [2024-06-27 18:18:25,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62602 conditions, 9156 events. 5866/9156 cut-off events. For 428184/428196 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 57726 event pairs, 1745 based on Foata normal form. 4/9000 useless extension candidates. Maximal degree in co-relation 62516. Up to 7827 conditions per place. [2024-06-27 18:18:25,874 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 250 selfloop transitions, 50 changer transitions 0/314 dead transitions. [2024-06-27 18:18:25,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 314 transitions, 3837 flow [2024-06-27 18:18:25,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:18:25,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:18:25,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-27 18:18:25,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-06-27 18:18:25,876 INFO L175 Difference]: Start difference. First operand has 194 places, 253 transitions, 2605 flow. Second operand 9 states and 234 transitions. [2024-06-27 18:18:25,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 314 transitions, 3837 flow [2024-06-27 18:18:26,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 314 transitions, 3686 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-27 18:18:26,219 INFO L231 Difference]: Finished difference. Result has 197 places, 259 transitions, 2674 flow [2024-06-27 18:18:26,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2454, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2674, PETRI_PLACES=197, PETRI_TRANSITIONS=259} [2024-06-27 18:18:26,220 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 142 predicate places. [2024-06-27 18:18:26,220 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 259 transitions, 2674 flow [2024-06-27 18:18:26,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:26,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:26,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:26,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:18:26,221 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:26,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:26,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1865220121, now seen corresponding path program 6 times [2024-06-27 18:18:26,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:26,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666010051] [2024-06-27 18:18:26,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:26,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:26,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:27,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:27,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:27,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666010051] [2024-06-27 18:18:27,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666010051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:27,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:27,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:18:27,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111146522] [2024-06-27 18:18:27,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:27,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:18:27,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:27,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:18:27,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:18:27,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:27,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 259 transitions, 2674 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:27,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:27,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:27,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:29,634 INFO L124 PetriNetUnfolderBase]: 5889/9213 cut-off events. [2024-06-27 18:18:29,635 INFO L125 PetriNetUnfolderBase]: For 438421/438433 co-relation queries the response was YES. [2024-06-27 18:18:29,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63267 conditions, 9213 events. 5889/9213 cut-off events. For 438421/438433 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 58315 event pairs, 1775 based on Foata normal form. 2/9045 useless extension candidates. Maximal degree in co-relation 63179. Up to 8148 conditions per place. [2024-06-27 18:18:29,713 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 260 selfloop transitions, 35 changer transitions 0/309 dead transitions. [2024-06-27 18:18:29,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 309 transitions, 3485 flow [2024-06-27 18:18:29,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:18:29,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:18:29,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-27 18:18:29,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034013605442177 [2024-06-27 18:18:29,715 INFO L175 Difference]: Start difference. First operand has 197 places, 259 transitions, 2674 flow. Second operand 9 states and 222 transitions. [2024-06-27 18:18:29,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 309 transitions, 3485 flow [2024-06-27 18:18:30,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 309 transitions, 3367 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 18:18:30,234 INFO L231 Difference]: Finished difference. Result has 201 places, 262 transitions, 2713 flow [2024-06-27 18:18:30,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2556, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2713, PETRI_PLACES=201, PETRI_TRANSITIONS=262} [2024-06-27 18:18:30,234 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 146 predicate places. [2024-06-27 18:18:30,234 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 262 transitions, 2713 flow [2024-06-27 18:18:30,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:30,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:30,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:30,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:18:30,235 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:30,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:30,235 INFO L85 PathProgramCache]: Analyzing trace with hash 317182339, now seen corresponding path program 7 times [2024-06-27 18:18:30,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:30,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602183896] [2024-06-27 18:18:30,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:30,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:31,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:31,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:31,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602183896] [2024-06-27 18:18:31,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602183896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:31,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:31,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:18:31,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780171136] [2024-06-27 18:18:31,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:31,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:18:31,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:31,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:18:31,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:18:31,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:31,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 262 transitions, 2713 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:31,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:31,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:31,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:32,925 INFO L124 PetriNetUnfolderBase]: 5879/9187 cut-off events. [2024-06-27 18:18:32,925 INFO L125 PetriNetUnfolderBase]: For 448401/448413 co-relation queries the response was YES. [2024-06-27 18:18:32,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62863 conditions, 9187 events. 5879/9187 cut-off events. For 448401/448413 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 57925 event pairs, 1746 based on Foata normal form. 4/9027 useless extension candidates. Maximal degree in co-relation 62774. Up to 7851 conditions per place. [2024-06-27 18:18:33,027 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 249 selfloop transitions, 51 changer transitions 0/314 dead transitions. [2024-06-27 18:18:33,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 314 transitions, 3659 flow [2024-06-27 18:18:33,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:18:33,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:18:33,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-27 18:18:33,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215419501133787 [2024-06-27 18:18:33,028 INFO L175 Difference]: Start difference. First operand has 201 places, 262 transitions, 2713 flow. Second operand 9 states and 230 transitions. [2024-06-27 18:18:33,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 314 transitions, 3659 flow [2024-06-27 18:18:33,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 314 transitions, 3499 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-27 18:18:33,530 INFO L231 Difference]: Finished difference. Result has 203 places, 262 transitions, 2663 flow [2024-06-27 18:18:33,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2553, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2663, PETRI_PLACES=203, PETRI_TRANSITIONS=262} [2024-06-27 18:18:33,531 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 148 predicate places. [2024-06-27 18:18:33,531 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 262 transitions, 2663 flow [2024-06-27 18:18:33,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:33,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:33,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:33,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:18:33,532 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:33,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:33,532 INFO L85 PathProgramCache]: Analyzing trace with hash 572782423, now seen corresponding path program 7 times [2024-06-27 18:18:33,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:33,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103092786] [2024-06-27 18:18:33,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:33,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:34,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:34,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:34,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103092786] [2024-06-27 18:18:34,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103092786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:34,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:34,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:18:34,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41405180] [2024-06-27 18:18:34,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:34,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:18:34,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:34,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:18:34,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:18:35,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:35,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 262 transitions, 2663 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:35,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:35,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:35,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:36,590 INFO L124 PetriNetUnfolderBase]: 5874/9197 cut-off events. [2024-06-27 18:18:36,590 INFO L125 PetriNetUnfolderBase]: For 456127/456139 co-relation queries the response was YES. [2024-06-27 18:18:36,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62822 conditions, 9197 events. 5874/9197 cut-off events. For 456127/456139 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 58251 event pairs, 1787 based on Foata normal form. 2/9028 useless extension candidates. Maximal degree in co-relation 62732. Up to 8210 conditions per place. [2024-06-27 18:18:36,690 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 270 selfloop transitions, 23 changer transitions 0/307 dead transitions. [2024-06-27 18:18:36,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 307 transitions, 3383 flow [2024-06-27 18:18:36,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:18:36,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:18:36,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-27 18:18:36,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-06-27 18:18:36,691 INFO L175 Difference]: Start difference. First operand has 203 places, 262 transitions, 2663 flow. Second operand 9 states and 217 transitions. [2024-06-27 18:18:36,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 307 transitions, 3383 flow [2024-06-27 18:18:37,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 307 transitions, 3219 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-27 18:18:37,163 INFO L231 Difference]: Finished difference. Result has 204 places, 262 transitions, 2553 flow [2024-06-27 18:18:37,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2499, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2553, PETRI_PLACES=204, PETRI_TRANSITIONS=262} [2024-06-27 18:18:37,163 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 149 predicate places. [2024-06-27 18:18:37,163 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 262 transitions, 2553 flow [2024-06-27 18:18:37,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:37,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:37,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:37,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:18:37,164 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:37,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:37,164 INFO L85 PathProgramCache]: Analyzing trace with hash 572789119, now seen corresponding path program 8 times [2024-06-27 18:18:37,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:37,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83508402] [2024-06-27 18:18:37,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:37,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:38,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:38,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:38,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83508402] [2024-06-27 18:18:38,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83508402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:38,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:38,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:18:38,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43670911] [2024-06-27 18:18:38,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:38,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:18:38,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:38,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:18:38,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:18:38,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:38,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 262 transitions, 2553 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:38,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:38,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:38,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:39,879 INFO L124 PetriNetUnfolderBase]: 5976/9357 cut-off events. [2024-06-27 18:18:39,879 INFO L125 PetriNetUnfolderBase]: For 478948/478960 co-relation queries the response was YES. [2024-06-27 18:18:39,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63875 conditions, 9357 events. 5976/9357 cut-off events. For 478948/478960 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 59381 event pairs, 1791 based on Foata normal form. 4/9187 useless extension candidates. Maximal degree in co-relation 63784. Up to 8158 conditions per place. [2024-06-27 18:18:39,978 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 270 selfloop transitions, 36 changer transitions 0/320 dead transitions. [2024-06-27 18:18:39,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 320 transitions, 3817 flow [2024-06-27 18:18:39,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:18:39,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:18:39,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-27 18:18:39,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170068027210885 [2024-06-27 18:18:39,979 INFO L175 Difference]: Start difference. First operand has 204 places, 262 transitions, 2553 flow. Second operand 9 states and 228 transitions. [2024-06-27 18:18:39,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 320 transitions, 3817 flow [2024-06-27 18:18:40,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 320 transitions, 3765 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 18:18:40,488 INFO L231 Difference]: Finished difference. Result has 206 places, 268 transitions, 2699 flow [2024-06-27 18:18:40,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2501, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2699, PETRI_PLACES=206, PETRI_TRANSITIONS=268} [2024-06-27 18:18:40,488 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 151 predicate places. [2024-06-27 18:18:40,488 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 268 transitions, 2699 flow [2024-06-27 18:18:40,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:40,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:40,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:40,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:18:40,489 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:40,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:40,489 INFO L85 PathProgramCache]: Analyzing trace with hash 581957059, now seen corresponding path program 9 times [2024-06-27 18:18:40,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:40,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115487268] [2024-06-27 18:18:40,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:40,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:41,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:41,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:41,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115487268] [2024-06-27 18:18:41,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115487268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:41,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:41,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:18:41,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287787475] [2024-06-27 18:18:41,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:41,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:18:41,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:41,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:18:41,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:18:41,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:41,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 268 transitions, 2699 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:41,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:41,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:41,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:43,135 INFO L124 PetriNetUnfolderBase]: 5966/9351 cut-off events. [2024-06-27 18:18:43,135 INFO L125 PetriNetUnfolderBase]: For 489867/489879 co-relation queries the response was YES. [2024-06-27 18:18:43,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64069 conditions, 9351 events. 5966/9351 cut-off events. For 489867/489879 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 59458 event pairs, 1797 based on Foata normal form. 4/9179 useless extension candidates. Maximal degree in co-relation 63977. Up to 8299 conditions per place. [2024-06-27 18:18:43,235 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 275 selfloop transitions, 24 changer transitions 0/313 dead transitions. [2024-06-27 18:18:43,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 313 transitions, 3425 flow [2024-06-27 18:18:43,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:18:43,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:18:43,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-27 18:18:43,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4943310657596372 [2024-06-27 18:18:43,237 INFO L175 Difference]: Start difference. First operand has 206 places, 268 transitions, 2699 flow. Second operand 9 states and 218 transitions. [2024-06-27 18:18:43,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 313 transitions, 3425 flow [2024-06-27 18:18:43,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 313 transitions, 3261 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-27 18:18:43,818 INFO L231 Difference]: Finished difference. Result has 209 places, 268 transitions, 2591 flow [2024-06-27 18:18:43,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2535, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2591, PETRI_PLACES=209, PETRI_TRANSITIONS=268} [2024-06-27 18:18:43,819 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 154 predicate places. [2024-06-27 18:18:43,819 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 268 transitions, 2591 flow [2024-06-27 18:18:43,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:43,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:43,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:43,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:18:43,819 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:43,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:43,820 INFO L85 PathProgramCache]: Analyzing trace with hash 572782609, now seen corresponding path program 10 times [2024-06-27 18:18:43,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:43,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756332907] [2024-06-27 18:18:43,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:43,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:44,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:44,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:44,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756332907] [2024-06-27 18:18:44,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756332907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:44,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:44,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:18:44,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74911915] [2024-06-27 18:18:44,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:44,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:18:44,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:44,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:18:44,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:18:44,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:44,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 268 transitions, 2591 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:44,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:44,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:44,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:46,585 INFO L124 PetriNetUnfolderBase]: 5956/9313 cut-off events. [2024-06-27 18:18:46,585 INFO L125 PetriNetUnfolderBase]: For 494139/494151 co-relation queries the response was YES. [2024-06-27 18:18:46,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63361 conditions, 9313 events. 5956/9313 cut-off events. For 494139/494151 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 58908 event pairs, 1774 based on Foata normal form. 4/9148 useless extension candidates. Maximal degree in co-relation 63268. Up to 8142 conditions per place. [2024-06-27 18:18:46,681 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 265 selfloop transitions, 37 changer transitions 0/316 dead transitions. [2024-06-27 18:18:46,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 316 transitions, 3341 flow [2024-06-27 18:18:46,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:18:46,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:18:46,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 18:18:46,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5056689342403629 [2024-06-27 18:18:46,683 INFO L175 Difference]: Start difference. First operand has 209 places, 268 transitions, 2591 flow. Second operand 9 states and 223 transitions. [2024-06-27 18:18:46,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 316 transitions, 3341 flow [2024-06-27 18:18:47,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 316 transitions, 3245 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 18:18:47,153 INFO L231 Difference]: Finished difference. Result has 210 places, 268 transitions, 2577 flow [2024-06-27 18:18:47,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2495, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2577, PETRI_PLACES=210, PETRI_TRANSITIONS=268} [2024-06-27 18:18:47,154 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 155 predicate places. [2024-06-27 18:18:47,154 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 268 transitions, 2577 flow [2024-06-27 18:18:47,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:47,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:47,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:47,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:18:47,154 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:47,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:47,155 INFO L85 PathProgramCache]: Analyzing trace with hash -196426743, now seen corresponding path program 2 times [2024-06-27 18:18:47,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:47,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655277337] [2024-06-27 18:18:47,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:47,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:47,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:47,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:47,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655277337] [2024-06-27 18:18:47,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655277337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:47,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:47,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:18:47,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106709681] [2024-06-27 18:18:47,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:47,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:18:47,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:47,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:18:47,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:18:47,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:47,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 268 transitions, 2577 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 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) [2024-06-27 18:18:47,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:47,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:47,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:49,616 INFO L124 PetriNetUnfolderBase]: 6603/10309 cut-off events. [2024-06-27 18:18:49,616 INFO L125 PetriNetUnfolderBase]: For 558604/558721 co-relation queries the response was YES. [2024-06-27 18:18:49,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67316 conditions, 10309 events. 6603/10309 cut-off events. For 558604/558721 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 65473 event pairs, 2313 based on Foata normal form. 9/10074 useless extension candidates. Maximal degree in co-relation 67222. Up to 9253 conditions per place. [2024-06-27 18:18:49,706 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 224 selfloop transitions, 13 changer transitions 0/285 dead transitions. [2024-06-27 18:18:49,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 285 transitions, 3099 flow [2024-06-27 18:18:49,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:18:49,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:18:49,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-27 18:18:49,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47278911564625853 [2024-06-27 18:18:49,707 INFO L175 Difference]: Start difference. First operand has 210 places, 268 transitions, 2577 flow. Second operand 6 states and 139 transitions. [2024-06-27 18:18:49,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 285 transitions, 3099 flow [2024-06-27 18:18:50,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 285 transitions, 2969 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 18:18:50,271 INFO L231 Difference]: Finished difference. Result has 207 places, 268 transitions, 2479 flow [2024-06-27 18:18:50,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2447, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2479, PETRI_PLACES=207, PETRI_TRANSITIONS=268} [2024-06-27 18:18:50,272 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 152 predicate places. [2024-06-27 18:18:50,272 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 268 transitions, 2479 flow [2024-06-27 18:18:50,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 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) [2024-06-27 18:18:50,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:50,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:50,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:18:50,272 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:50,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:50,272 INFO L85 PathProgramCache]: Analyzing trace with hash -647328470, now seen corresponding path program 1 times [2024-06-27 18:18:50,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:50,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688495513] [2024-06-27 18:18:50,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:50,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:50,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:50,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:50,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688495513] [2024-06-27 18:18:50,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688495513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:50,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:50,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:18:50,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392663206] [2024-06-27 18:18:50,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:50,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:18:50,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:50,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:18:50,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:18:50,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:18:50,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 268 transitions, 2479 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:50,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:50,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:18:50,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:52,730 INFO L124 PetriNetUnfolderBase]: 7194/11092 cut-off events. [2024-06-27 18:18:52,730 INFO L125 PetriNetUnfolderBase]: For 574548/574604 co-relation queries the response was YES. [2024-06-27 18:18:52,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71221 conditions, 11092 events. 7194/11092 cut-off events. For 574548/574604 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 69462 event pairs, 2416 based on Foata normal form. 1/10896 useless extension candidates. Maximal degree in co-relation 71126. Up to 10056 conditions per place. [2024-06-27 18:18:52,854 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 241 selfloop transitions, 24 changer transitions 0/298 dead transitions. [2024-06-27 18:18:52,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 298 transitions, 3269 flow [2024-06-27 18:18:52,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:18:52,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:18:52,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-27 18:18:52,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2024-06-27 18:18:52,856 INFO L175 Difference]: Start difference. First operand has 207 places, 268 transitions, 2479 flow. Second operand 6 states and 142 transitions. [2024-06-27 18:18:52,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 298 transitions, 3269 flow [2024-06-27 18:18:53,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 298 transitions, 3214 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 18:18:53,693 INFO L231 Difference]: Finished difference. Result has 208 places, 274 transitions, 2565 flow [2024-06-27 18:18:53,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2424, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2565, PETRI_PLACES=208, PETRI_TRANSITIONS=274} [2024-06-27 18:18:53,694 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 153 predicate places. [2024-06-27 18:18:53,694 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 274 transitions, 2565 flow [2024-06-27 18:18:53,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:53,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:53,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:53,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:18:53,694 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:53,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:53,695 INFO L85 PathProgramCache]: Analyzing trace with hash -181226420, now seen corresponding path program 2 times [2024-06-27 18:18:53,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:53,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226328260] [2024-06-27 18:18:53,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:53,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:54,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:54,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:54,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226328260] [2024-06-27 18:18:54,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226328260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:54,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:54,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:18:54,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770549687] [2024-06-27 18:18:54,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:54,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:18:54,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:54,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:18:54,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:18:54,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:18:54,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 274 transitions, 2565 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:54,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:54,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:18:54,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:56,101 INFO L124 PetriNetUnfolderBase]: 7191/11092 cut-off events. [2024-06-27 18:18:56,102 INFO L125 PetriNetUnfolderBase]: For 593456/593516 co-relation queries the response was YES. [2024-06-27 18:18:56,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72333 conditions, 11092 events. 7191/11092 cut-off events. For 593456/593516 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 69446 event pairs, 2418 based on Foata normal form. 5/10899 useless extension candidates. Maximal degree in co-relation 72238. Up to 10053 conditions per place. [2024-06-27 18:18:56,221 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 237 selfloop transitions, 24 changer transitions 0/294 dead transitions. [2024-06-27 18:18:56,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 294 transitions, 3151 flow [2024-06-27 18:18:56,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:18:56,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:18:56,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-27 18:18:56,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2024-06-27 18:18:56,222 INFO L175 Difference]: Start difference. First operand has 208 places, 274 transitions, 2565 flow. Second operand 6 states and 138 transitions. [2024-06-27 18:18:56,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 294 transitions, 3151 flow [2024-06-27 18:18:56,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 294 transitions, 3078 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-06-27 18:18:56,880 INFO L231 Difference]: Finished difference. Result has 212 places, 274 transitions, 2547 flow [2024-06-27 18:18:56,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2492, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2547, PETRI_PLACES=212, PETRI_TRANSITIONS=274} [2024-06-27 18:18:56,881 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 157 predicate places. [2024-06-27 18:18:56,881 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 274 transitions, 2547 flow [2024-06-27 18:18:56,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:56,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:56,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:56,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:18:56,882 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:56,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:56,882 INFO L85 PathProgramCache]: Analyzing trace with hash -2094229438, now seen corresponding path program 1 times [2024-06-27 18:18:56,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:56,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877026211] [2024-06-27 18:18:56,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:56,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:58,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:58,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:58,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877026211] [2024-06-27 18:18:58,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877026211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:58,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:58,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:18:58,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080761612] [2024-06-27 18:18:58,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:58,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:18:58,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:58,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:18:58,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:18:58,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:18:58,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 274 transitions, 2547 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:58,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:58,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:18:58,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:00,593 INFO L124 PetriNetUnfolderBase]: 6991/10830 cut-off events. [2024-06-27 18:19:00,594 INFO L125 PetriNetUnfolderBase]: For 612411/612475 co-relation queries the response was YES. [2024-06-27 18:19:00,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72149 conditions, 10830 events. 6991/10830 cut-off events. For 612411/612475 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 68097 event pairs, 2131 based on Foata normal form. 4/10605 useless extension candidates. Maximal degree in co-relation 72052. Up to 9702 conditions per place. [2024-06-27 18:19:00,730 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 284 selfloop transitions, 32 changer transitions 0/331 dead transitions. [2024-06-27 18:19:00,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 331 transitions, 3417 flow [2024-06-27 18:19:00,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:00,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:00,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-27 18:19:00,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2024-06-27 18:19:00,732 INFO L175 Difference]: Start difference. First operand has 212 places, 274 transitions, 2547 flow. Second operand 9 states and 213 transitions. [2024-06-27 18:19:00,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 331 transitions, 3417 flow [2024-06-27 18:19:01,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 331 transitions, 3353 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 18:19:01,360 INFO L231 Difference]: Finished difference. Result has 217 places, 281 transitions, 2665 flow [2024-06-27 18:19:01,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2483, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2665, PETRI_PLACES=217, PETRI_TRANSITIONS=281} [2024-06-27 18:19:01,361 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 162 predicate places. [2024-06-27 18:19:01,361 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 281 transitions, 2665 flow [2024-06-27 18:19:01,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:01,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:01,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:01,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:19:01,361 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:01,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:01,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1267692876, now seen corresponding path program 1 times [2024-06-27 18:19:01,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:01,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649295371] [2024-06-27 18:19:01,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:01,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:02,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:02,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:02,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649295371] [2024-06-27 18:19:02,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649295371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:02,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:02,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:02,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103724042] [2024-06-27 18:19:02,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:02,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:02,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:02,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:02,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:03,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:03,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 281 transitions, 2665 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:03,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:03,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:03,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:05,090 INFO L124 PetriNetUnfolderBase]: 6683/10488 cut-off events. [2024-06-27 18:19:05,090 INFO L125 PetriNetUnfolderBase]: For 632186/632244 co-relation queries the response was YES. [2024-06-27 18:19:05,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72387 conditions, 10488 events. 6683/10488 cut-off events. For 632186/632244 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 67261 event pairs, 1330 based on Foata normal form. 4/10250 useless extension candidates. Maximal degree in co-relation 72288. Up to 9020 conditions per place. [2024-06-27 18:19:05,214 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 314 selfloop transitions, 33 changer transitions 0/364 dead transitions. [2024-06-27 18:19:05,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 364 transitions, 3967 flow [2024-06-27 18:19:05,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:19:05,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:19:05,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 283 transitions. [2024-06-27 18:19:05,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5250463821892394 [2024-06-27 18:19:05,215 INFO L175 Difference]: Start difference. First operand has 217 places, 281 transitions, 2665 flow. Second operand 11 states and 283 transitions. [2024-06-27 18:19:05,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 364 transitions, 3967 flow [2024-06-27 18:19:06,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 364 transitions, 3844 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-27 18:19:06,031 INFO L231 Difference]: Finished difference. Result has 222 places, 285 transitions, 2763 flow [2024-06-27 18:19:06,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2542, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2763, PETRI_PLACES=222, PETRI_TRANSITIONS=285} [2024-06-27 18:19:06,032 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 167 predicate places. [2024-06-27 18:19:06,032 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 285 transitions, 2763 flow [2024-06-27 18:19:06,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:06,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:06,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:06,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:19:06,032 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:06,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:06,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1269570701, now seen corresponding path program 1 times [2024-06-27 18:19:06,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:06,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006057313] [2024-06-27 18:19:06,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:06,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:07,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:07,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:07,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006057313] [2024-06-27 18:19:07,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006057313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:07,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:07,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:07,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506631384] [2024-06-27 18:19:07,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:07,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:07,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:07,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:07,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:07,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:07,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 285 transitions, 2763 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:07,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:07,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:07,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:09,535 INFO L124 PetriNetUnfolderBase]: 6882/10486 cut-off events. [2024-06-27 18:19:09,536 INFO L125 PetriNetUnfolderBase]: For 683600/683640 co-relation queries the response was YES. [2024-06-27 18:19:09,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75698 conditions, 10486 events. 6882/10486 cut-off events. For 683600/683640 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 64510 event pairs, 1414 based on Foata normal form. 4/10335 useless extension candidates. Maximal degree in co-relation 75598. Up to 9324 conditions per place. [2024-06-27 18:19:09,663 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 313 selfloop transitions, 62 changer transitions 0/392 dead transitions. [2024-06-27 18:19:09,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 392 transitions, 4591 flow [2024-06-27 18:19:09,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:19:09,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:19:09,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 287 transitions. [2024-06-27 18:19:09,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5324675324675324 [2024-06-27 18:19:09,664 INFO L175 Difference]: Start difference. First operand has 222 places, 285 transitions, 2763 flow. Second operand 11 states and 287 transitions. [2024-06-27 18:19:09,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 392 transitions, 4591 flow [2024-06-27 18:19:10,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 392 transitions, 4464 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-27 18:19:10,494 INFO L231 Difference]: Finished difference. Result has 229 places, 308 transitions, 3356 flow [2024-06-27 18:19:10,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2641, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3356, PETRI_PLACES=229, PETRI_TRANSITIONS=308} [2024-06-27 18:19:10,495 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 174 predicate places. [2024-06-27 18:19:10,495 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 308 transitions, 3356 flow [2024-06-27 18:19:10,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:10,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:10,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:10,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:19:10,496 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:10,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:10,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1269566826, now seen corresponding path program 2 times [2024-06-27 18:19:10,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:10,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044477588] [2024-06-27 18:19:10,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:10,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:12,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:12,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:12,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044477588] [2024-06-27 18:19:12,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044477588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:12,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:12,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:12,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941229856] [2024-06-27 18:19:12,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:12,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:12,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:12,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:12,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:12,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:12,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 308 transitions, 3356 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:12,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:12,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:12,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:14,552 INFO L124 PetriNetUnfolderBase]: 6917/10799 cut-off events. [2024-06-27 18:19:14,553 INFO L125 PetriNetUnfolderBase]: For 719152/719230 co-relation queries the response was YES. [2024-06-27 18:19:14,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78390 conditions, 10799 events. 6917/10799 cut-off events. For 719152/719230 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 69233 event pairs, 1648 based on Foata normal form. 4/10550 useless extension candidates. Maximal degree in co-relation 78285. Up to 9415 conditions per place. [2024-06-27 18:19:14,678 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 335 selfloop transitions, 36 changer transitions 0/388 dead transitions. [2024-06-27 18:19:14,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 388 transitions, 4624 flow [2024-06-27 18:19:14,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:19:14,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:19:14,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 281 transitions. [2024-06-27 18:19:14,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5213358070500927 [2024-06-27 18:19:14,680 INFO L175 Difference]: Start difference. First operand has 229 places, 308 transitions, 3356 flow. Second operand 11 states and 281 transitions. [2024-06-27 18:19:14,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 388 transitions, 4624 flow [2024-06-27 18:19:15,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 388 transitions, 4297 flow, removed 151 selfloop flow, removed 4 redundant places. [2024-06-27 18:19:15,538 INFO L231 Difference]: Finished difference. Result has 236 places, 310 transitions, 3164 flow [2024-06-27 18:19:15,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3029, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3164, PETRI_PLACES=236, PETRI_TRANSITIONS=310} [2024-06-27 18:19:15,538 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 181 predicate places. [2024-06-27 18:19:15,539 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 310 transitions, 3164 flow [2024-06-27 18:19:15,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:15,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:15,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:15,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:19:15,539 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:15,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:15,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1984103780, now seen corresponding path program 3 times [2024-06-27 18:19:15,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:15,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956425386] [2024-06-27 18:19:15,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:15,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:17,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:17,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:17,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956425386] [2024-06-27 18:19:17,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956425386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:17,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:17,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:17,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212502228] [2024-06-27 18:19:17,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:17,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:17,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:17,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:17,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:17,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:17,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 310 transitions, 3164 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:17,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:17,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:17,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:19,559 INFO L124 PetriNetUnfolderBase]: 6909/10799 cut-off events. [2024-06-27 18:19:19,559 INFO L125 PetriNetUnfolderBase]: For 723393/723471 co-relation queries the response was YES. [2024-06-27 18:19:19,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77536 conditions, 10799 events. 6909/10799 cut-off events. For 723393/723471 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 69350 event pairs, 1658 based on Foata normal form. 4/10546 useless extension candidates. Maximal degree in co-relation 77429. Up to 9495 conditions per place. [2024-06-27 18:19:19,696 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 341 selfloop transitions, 35 changer transitions 0/393 dead transitions. [2024-06-27 18:19:19,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 393 transitions, 4188 flow [2024-06-27 18:19:19,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:19:19,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:19:19,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 300 transitions. [2024-06-27 18:19:19,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-06-27 18:19:19,697 INFO L175 Difference]: Start difference. First operand has 236 places, 310 transitions, 3164 flow. Second operand 12 states and 300 transitions. [2024-06-27 18:19:19,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 393 transitions, 4188 flow [2024-06-27 18:19:20,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 393 transitions, 4021 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-06-27 18:19:20,479 INFO L231 Difference]: Finished difference. Result has 239 places, 310 transitions, 3075 flow [2024-06-27 18:19:20,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2997, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3075, PETRI_PLACES=239, PETRI_TRANSITIONS=310} [2024-06-27 18:19:20,480 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 184 predicate places. [2024-06-27 18:19:20,480 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 310 transitions, 3075 flow [2024-06-27 18:19:20,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:20,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:20,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:20,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:19:20,480 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:20,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:20,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1282127377, now seen corresponding path program 2 times [2024-06-27 18:19:20,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:20,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256818013] [2024-06-27 18:19:20,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:20,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:21,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:21,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:21,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256818013] [2024-06-27 18:19:21,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256818013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:21,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:21,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:21,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034657864] [2024-06-27 18:19:21,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:21,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:21,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:21,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:21,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:22,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:22,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 310 transitions, 3075 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:22,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:22,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:22,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:24,605 INFO L124 PetriNetUnfolderBase]: 6919/10846 cut-off events. [2024-06-27 18:19:24,605 INFO L125 PetriNetUnfolderBase]: For 732359/732409 co-relation queries the response was YES. [2024-06-27 18:19:24,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77157 conditions, 10846 events. 6919/10846 cut-off events. For 732359/732409 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 69917 event pairs, 1659 based on Foata normal form. 4/10580 useless extension candidates. Maximal degree in co-relation 77049. Up to 9524 conditions per place. [2024-06-27 18:19:24,742 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 347 selfloop transitions, 30 changer transitions 0/394 dead transitions. [2024-06-27 18:19:24,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 394 transitions, 4185 flow [2024-06-27 18:19:24,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:19:24,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:19:24,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 299 transitions. [2024-06-27 18:19:24,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085034013605442 [2024-06-27 18:19:24,743 INFO L175 Difference]: Start difference. First operand has 239 places, 310 transitions, 3075 flow. Second operand 12 states and 299 transitions. [2024-06-27 18:19:24,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 394 transitions, 4185 flow [2024-06-27 18:19:25,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 394 transitions, 4073 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-06-27 18:19:25,513 INFO L231 Difference]: Finished difference. Result has 240 places, 313 transitions, 3124 flow [2024-06-27 18:19:25,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2981, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3124, PETRI_PLACES=240, PETRI_TRANSITIONS=313} [2024-06-27 18:19:25,513 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 185 predicate places. [2024-06-27 18:19:25,513 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 313 transitions, 3124 flow [2024-06-27 18:19:25,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:25,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:25,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:25,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:19:25,514 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:25,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:25,514 INFO L85 PathProgramCache]: Analyzing trace with hash -2002918673, now seen corresponding path program 3 times [2024-06-27 18:19:25,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:25,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468994043] [2024-06-27 18:19:25,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:25,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:27,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:27,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:27,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468994043] [2024-06-27 18:19:27,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468994043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:27,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:27,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:27,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276012137] [2024-06-27 18:19:27,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:27,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:27,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:27,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:27,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:27,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:27,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 313 transitions, 3124 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:27,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:27,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:27,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:29,551 INFO L124 PetriNetUnfolderBase]: 6920/10481 cut-off events. [2024-06-27 18:19:29,552 INFO L125 PetriNetUnfolderBase]: For 743795/743817 co-relation queries the response was YES. [2024-06-27 18:19:29,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77151 conditions, 10481 events. 6920/10481 cut-off events. For 743795/743817 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 64049 event pairs, 1232 based on Foata normal form. 5/10407 useless extension candidates. Maximal degree in co-relation 77042. Up to 8653 conditions per place. [2024-06-27 18:19:29,682 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 245 selfloop transitions, 143 changer transitions 0/405 dead transitions. [2024-06-27 18:19:29,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 405 transitions, 4850 flow [2024-06-27 18:19:29,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:19:29,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:19:29,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 293 transitions. [2024-06-27 18:19:29,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5435992578849722 [2024-06-27 18:19:29,684 INFO L175 Difference]: Start difference. First operand has 240 places, 313 transitions, 3124 flow. Second operand 11 states and 293 transitions. [2024-06-27 18:19:29,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 405 transitions, 4850 flow [2024-06-27 18:19:30,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 405 transitions, 4744 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-27 18:19:30,445 INFO L231 Difference]: Finished difference. Result has 244 places, 328 transitions, 3803 flow [2024-06-27 18:19:30,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3018, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3803, PETRI_PLACES=244, PETRI_TRANSITIONS=328} [2024-06-27 18:19:30,445 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 189 predicate places. [2024-06-27 18:19:30,446 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 328 transitions, 3803 flow [2024-06-27 18:19:30,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:30,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:30,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:30,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:19:30,446 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:30,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:30,447 INFO L85 PathProgramCache]: Analyzing trace with hash -2002924408, now seen corresponding path program 4 times [2024-06-27 18:19:30,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:30,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33362921] [2024-06-27 18:19:30,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:30,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:31,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:31,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:31,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33362921] [2024-06-27 18:19:31,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33362921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:31,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:31,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:31,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296847913] [2024-06-27 18:19:31,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:31,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:31,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:31,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:31,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:32,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:32,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 328 transitions, 3803 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:32,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:32,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:32,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:34,265 INFO L124 PetriNetUnfolderBase]: 6970/10667 cut-off events. [2024-06-27 18:19:34,266 INFO L125 PetriNetUnfolderBase]: For 780690/780716 co-relation queries the response was YES. [2024-06-27 18:19:34,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80415 conditions, 10667 events. 6970/10667 cut-off events. For 780690/780716 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 65923 event pairs, 1379 based on Foata normal form. 4/10547 useless extension candidates. Maximal degree in co-relation 80304. Up to 9385 conditions per place. [2024-06-27 18:19:34,390 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 283 selfloop transitions, 93 changer transitions 0/393 dead transitions. [2024-06-27 18:19:34,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 393 transitions, 4857 flow [2024-06-27 18:19:34,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:19:34,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:19:34,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 255 transitions. [2024-06-27 18:19:34,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204081632653061 [2024-06-27 18:19:34,392 INFO L175 Difference]: Start difference. First operand has 244 places, 328 transitions, 3803 flow. Second operand 10 states and 255 transitions. [2024-06-27 18:19:34,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 393 transitions, 4857 flow [2024-06-27 18:19:35,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 393 transitions, 4543 flow, removed 144 selfloop flow, removed 3 redundant places. [2024-06-27 18:19:35,466 INFO L231 Difference]: Finished difference. Result has 251 places, 330 transitions, 3771 flow [2024-06-27 18:19:35,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3493, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3771, PETRI_PLACES=251, PETRI_TRANSITIONS=330} [2024-06-27 18:19:35,467 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 196 predicate places. [2024-06-27 18:19:35,467 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 330 transitions, 3771 flow [2024-06-27 18:19:35,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:35,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:35,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:35,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:19:35,468 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:35,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:35,468 INFO L85 PathProgramCache]: Analyzing trace with hash 635465635, now seen corresponding path program 4 times [2024-06-27 18:19:35,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:35,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952094643] [2024-06-27 18:19:35,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:35,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:35,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:36,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:36,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:36,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952094643] [2024-06-27 18:19:36,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952094643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:36,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:36,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:36,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926389944] [2024-06-27 18:19:36,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:36,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:36,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:36,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:36,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:37,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:37,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 330 transitions, 3771 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:37,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:37,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:37,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:39,276 INFO L124 PetriNetUnfolderBase]: 7047/10988 cut-off events. [2024-06-27 18:19:39,276 INFO L125 PetriNetUnfolderBase]: For 792841/792873 co-relation queries the response was YES. [2024-06-27 18:19:39,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80549 conditions, 10988 events. 7047/10988 cut-off events. For 792841/792873 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 70545 event pairs, 1523 based on Foata normal form. 4/10788 useless extension candidates. Maximal degree in co-relation 80436. Up to 8953 conditions per place. [2024-06-27 18:19:39,409 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 295 selfloop transitions, 97 changer transitions 0/409 dead transitions. [2024-06-27 18:19:39,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 409 transitions, 4912 flow [2024-06-27 18:19:39,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:19:39,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:19:39,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 287 transitions. [2024-06-27 18:19:39,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5324675324675324 [2024-06-27 18:19:39,413 INFO L175 Difference]: Start difference. First operand has 251 places, 330 transitions, 3771 flow. Second operand 11 states and 287 transitions. [2024-06-27 18:19:39,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 409 transitions, 4912 flow [2024-06-27 18:19:40,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 409 transitions, 4654 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-27 18:19:40,292 INFO L231 Difference]: Finished difference. Result has 254 places, 336 transitions, 3842 flow [2024-06-27 18:19:40,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3513, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3842, PETRI_PLACES=254, PETRI_TRANSITIONS=336} [2024-06-27 18:19:40,293 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 199 predicate places. [2024-06-27 18:19:40,293 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 336 transitions, 3842 flow [2024-06-27 18:19:40,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:40,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:40,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:40,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:19:40,293 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:40,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:40,293 INFO L85 PathProgramCache]: Analyzing trace with hash 635317610, now seen corresponding path program 5 times [2024-06-27 18:19:40,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:40,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216163945] [2024-06-27 18:19:40,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:40,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:41,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:41,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:41,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216163945] [2024-06-27 18:19:41,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216163945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:41,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:41,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:41,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38537520] [2024-06-27 18:19:41,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:41,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:41,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:41,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:41,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:42,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:42,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 336 transitions, 3842 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:42,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:42,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:42,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:44,358 INFO L124 PetriNetUnfolderBase]: 7148/11168 cut-off events. [2024-06-27 18:19:44,358 INFO L125 PetriNetUnfolderBase]: For 835393/835425 co-relation queries the response was YES. [2024-06-27 18:19:44,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83451 conditions, 11168 events. 7148/11168 cut-off events. For 835393/835425 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 71905 event pairs, 1625 based on Foata normal form. 4/10956 useless extension candidates. Maximal degree in co-relation 83337. Up to 9525 conditions per place. [2024-06-27 18:19:44,491 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 321 selfloop transitions, 70 changer transitions 0/408 dead transitions. [2024-06-27 18:19:44,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 408 transitions, 5262 flow [2024-06-27 18:19:44,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:19:44,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:19:44,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 258 transitions. [2024-06-27 18:19:44,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5265306122448979 [2024-06-27 18:19:44,492 INFO L175 Difference]: Start difference. First operand has 254 places, 336 transitions, 3842 flow. Second operand 10 states and 258 transitions. [2024-06-27 18:19:44,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 408 transitions, 5262 flow [2024-06-27 18:19:45,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 408 transitions, 4996 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-27 18:19:45,511 INFO L231 Difference]: Finished difference. Result has 257 places, 344 transitions, 3933 flow [2024-06-27 18:19:45,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3576, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3933, PETRI_PLACES=257, PETRI_TRANSITIONS=344} [2024-06-27 18:19:45,511 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 202 predicate places. [2024-06-27 18:19:45,511 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 344 transitions, 3933 flow [2024-06-27 18:19:45,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:45,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:45,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:45,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:19:45,512 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:45,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:45,512 INFO L85 PathProgramCache]: Analyzing trace with hash 635321330, now seen corresponding path program 6 times [2024-06-27 18:19:45,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:45,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276674308] [2024-06-27 18:19:45,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:45,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:47,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:47,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:47,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276674308] [2024-06-27 18:19:47,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276674308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:47,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:47,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:47,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843024833] [2024-06-27 18:19:47,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:47,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:47,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:47,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:47,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:47,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:47,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 344 transitions, 3933 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:47,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:47,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:47,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:49,615 INFO L124 PetriNetUnfolderBase]: 7174/10972 cut-off events. [2024-06-27 18:19:49,615 INFO L125 PetriNetUnfolderBase]: For 862516/862542 co-relation queries the response was YES. [2024-06-27 18:19:49,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83952 conditions, 10972 events. 7174/10972 cut-off events. For 862516/862542 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 68039 event pairs, 1385 based on Foata normal form. 4/10853 useless extension candidates. Maximal degree in co-relation 83836. Up to 9619 conditions per place. [2024-06-27 18:19:49,769 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 283 selfloop transitions, 114 changer transitions 0/414 dead transitions. [2024-06-27 18:19:49,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 414 transitions, 5243 flow [2024-06-27 18:19:49,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:19:49,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:19:49,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 274 transitions. [2024-06-27 18:19:49,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083487940630798 [2024-06-27 18:19:49,771 INFO L175 Difference]: Start difference. First operand has 257 places, 344 transitions, 3933 flow. Second operand 11 states and 274 transitions. [2024-06-27 18:19:49,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 414 transitions, 5243 flow [2024-06-27 18:19:50,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 414 transitions, 5024 flow, removed 73 selfloop flow, removed 6 redundant places. [2024-06-27 18:19:50,878 INFO L231 Difference]: Finished difference. Result has 263 places, 351 transitions, 4268 flow [2024-06-27 18:19:50,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3746, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4268, PETRI_PLACES=263, PETRI_TRANSITIONS=351} [2024-06-27 18:19:50,879 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 208 predicate places. [2024-06-27 18:19:50,879 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 351 transitions, 4268 flow [2024-06-27 18:19:50,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:50,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:50,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:50,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:19:50,879 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:50,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:50,879 INFO L85 PathProgramCache]: Analyzing trace with hash -2003068403, now seen corresponding path program 5 times [2024-06-27 18:19:50,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:50,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171882237] [2024-06-27 18:19:50,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:50,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:50,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:52,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:52,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:52,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171882237] [2024-06-27 18:19:52,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171882237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:52,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:52,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:52,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571102501] [2024-06-27 18:19:52,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:52,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:52,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:52,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:52,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:52,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:52,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 351 transitions, 4268 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:52,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:52,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:52,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:54,807 INFO L124 PetriNetUnfolderBase]: 7257/10981 cut-off events. [2024-06-27 18:19:54,807 INFO L125 PetriNetUnfolderBase]: For 911613/911653 co-relation queries the response was YES. [2024-06-27 18:19:54,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86852 conditions, 10981 events. 7257/10981 cut-off events. For 911613/911653 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 67505 event pairs, 1214 based on Foata normal form. 4/10898 useless extension candidates. Maximal degree in co-relation 86733. Up to 8907 conditions per place. [2024-06-27 18:19:54,947 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 247 selfloop transitions, 166 changer transitions 0/430 dead transitions. [2024-06-27 18:19:54,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 430 transitions, 6074 flow [2024-06-27 18:19:54,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:19:54,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:19:54,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 271 transitions. [2024-06-27 18:19:54,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5530612244897959 [2024-06-27 18:19:54,949 INFO L175 Difference]: Start difference. First operand has 263 places, 351 transitions, 4268 flow. Second operand 10 states and 271 transitions. [2024-06-27 18:19:54,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 430 transitions, 6074 flow [2024-06-27 18:19:56,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 430 transitions, 5712 flow, removed 122 selfloop flow, removed 6 redundant places. [2024-06-27 18:19:56,410 INFO L231 Difference]: Finished difference. Result has 267 places, 357 transitions, 4469 flow [2024-06-27 18:19:56,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3906, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4469, PETRI_PLACES=267, PETRI_TRANSITIONS=357} [2024-06-27 18:19:56,411 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 212 predicate places. [2024-06-27 18:19:56,411 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 357 transitions, 4469 flow [2024-06-27 18:19:56,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:56,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:56,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:56,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:19:56,411 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:56,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:56,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1997561873, now seen corresponding path program 6 times [2024-06-27 18:19:56,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:56,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792507811] [2024-06-27 18:19:56,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:56,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:57,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:57,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:57,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792507811] [2024-06-27 18:19:57,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792507811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:57,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:57,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:57,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057533066] [2024-06-27 18:19:57,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:57,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:57,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:57,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:57,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:58,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:58,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 357 transitions, 4469 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:58,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:58,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:58,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:00,428 INFO L124 PetriNetUnfolderBase]: 7313/11061 cut-off events. [2024-06-27 18:20:00,428 INFO L125 PetriNetUnfolderBase]: For 949063/949103 co-relation queries the response was YES. [2024-06-27 18:20:00,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89577 conditions, 11061 events. 7313/11061 cut-off events. For 949063/949103 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 68059 event pairs, 1212 based on Foata normal form. 4/10978 useless extension candidates. Maximal degree in co-relation 89456. Up to 9143 conditions per place. [2024-06-27 18:20:00,567 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 273 selfloop transitions, 146 changer transitions 0/436 dead transitions. [2024-06-27 18:20:00,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 436 transitions, 6307 flow [2024-06-27 18:20:00,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:00,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:00,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 269 transitions. [2024-06-27 18:20:00,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5489795918367347 [2024-06-27 18:20:00,568 INFO L175 Difference]: Start difference. First operand has 267 places, 357 transitions, 4469 flow. Second operand 10 states and 269 transitions. [2024-06-27 18:20:00,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 436 transitions, 6307 flow [2024-06-27 18:20:01,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 436 transitions, 5962 flow, removed 99 selfloop flow, removed 7 redundant places. [2024-06-27 18:20:01,816 INFO L231 Difference]: Finished difference. Result has 270 places, 363 transitions, 4673 flow [2024-06-27 18:20:01,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4190, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4673, PETRI_PLACES=270, PETRI_TRANSITIONS=363} [2024-06-27 18:20:01,817 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 215 predicate places. [2024-06-27 18:20:01,817 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 363 transitions, 4673 flow [2024-06-27 18:20:01,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:01,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:01,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:01,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:20:01,817 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:01,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:01,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1997556293, now seen corresponding path program 7 times [2024-06-27 18:20:01,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:01,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990347192] [2024-06-27 18:20:01,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:01,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:03,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:03,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:03,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990347192] [2024-06-27 18:20:03,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990347192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:03,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:03,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:03,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136739335] [2024-06-27 18:20:03,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:03,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:03,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:03,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:03,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:03,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:20:03,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 363 transitions, 4673 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:03,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:03,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:20:03,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:05,985 INFO L124 PetriNetUnfolderBase]: 7369/11149 cut-off events. [2024-06-27 18:20:05,985 INFO L125 PetriNetUnfolderBase]: For 954831/954871 co-relation queries the response was YES. [2024-06-27 18:20:06,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89940 conditions, 11149 events. 7369/11149 cut-off events. For 954831/954871 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 68705 event pairs, 1206 based on Foata normal form. 4/11066 useless extension candidates. Maximal degree in co-relation 89819. Up to 9297 conditions per place. [2024-06-27 18:20:06,142 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 282 selfloop transitions, 147 changer transitions 0/446 dead transitions. [2024-06-27 18:20:06,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 446 transitions, 6176 flow [2024-06-27 18:20:06,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:20:06,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:20:06,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 292 transitions. [2024-06-27 18:20:06,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5417439703153989 [2024-06-27 18:20:06,143 INFO L175 Difference]: Start difference. First operand has 270 places, 363 transitions, 4673 flow. Second operand 11 states and 292 transitions. [2024-06-27 18:20:06,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 446 transitions, 6176 flow [2024-06-27 18:20:07,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 446 transitions, 5907 flow, removed 60 selfloop flow, removed 6 redundant places. [2024-06-27 18:20:07,635 INFO L231 Difference]: Finished difference. Result has 275 places, 369 transitions, 4842 flow [2024-06-27 18:20:07,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4417, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4842, PETRI_PLACES=275, PETRI_TRANSITIONS=369} [2024-06-27 18:20:07,636 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 220 predicate places. [2024-06-27 18:20:07,636 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 369 transitions, 4842 flow [2024-06-27 18:20:07,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:07,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:07,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:07,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:20:07,637 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:07,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:07,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1997354483, now seen corresponding path program 8 times [2024-06-27 18:20:07,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:07,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587372350] [2024-06-27 18:20:07,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:07,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:09,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:09,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:09,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587372350] [2024-06-27 18:20:09,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587372350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:09,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:09,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:09,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756519047] [2024-06-27 18:20:09,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:09,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:09,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:09,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:09,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:09,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:20:09,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 369 transitions, 4842 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:09,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:09,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:20:09,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:11,929 INFO L124 PetriNetUnfolderBase]: 7298/11036 cut-off events. [2024-06-27 18:20:11,929 INFO L125 PetriNetUnfolderBase]: For 956801/956847 co-relation queries the response was YES. [2024-06-27 18:20:12,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89350 conditions, 11036 events. 7298/11036 cut-off events. For 956801/956847 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 68017 event pairs, 1295 based on Foata normal form. 4/10948 useless extension candidates. Maximal degree in co-relation 89228. Up to 9223 conditions per place. [2024-06-27 18:20:12,080 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 278 selfloop transitions, 150 changer transitions 0/445 dead transitions. [2024-06-27 18:20:12,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 445 transitions, 6214 flow [2024-06-27 18:20:12,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:20:12,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:20:12,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 290 transitions. [2024-06-27 18:20:12,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380333951762524 [2024-06-27 18:20:12,082 INFO L175 Difference]: Start difference. First operand has 275 places, 369 transitions, 4842 flow. Second operand 11 states and 290 transitions. [2024-06-27 18:20:12,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 445 transitions, 6214 flow [2024-06-27 18:20:13,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 445 transitions, 5812 flow, removed 90 selfloop flow, removed 7 redundant places. [2024-06-27 18:20:13,885 INFO L231 Difference]: Finished difference. Result has 279 places, 369 transitions, 4749 flow [2024-06-27 18:20:13,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4440, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4749, PETRI_PLACES=279, PETRI_TRANSITIONS=369} [2024-06-27 18:20:13,885 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 224 predicate places. [2024-06-27 18:20:13,885 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 369 transitions, 4749 flow [2024-06-27 18:20:13,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:13,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:13,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:13,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:20:13,886 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:13,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:13,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1997562028, now seen corresponding path program 7 times [2024-06-27 18:20:13,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:13,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94438669] [2024-06-27 18:20:13,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:13,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:15,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:15,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:15,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94438669] [2024-06-27 18:20:15,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94438669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:15,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:15,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:15,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285367868] [2024-06-27 18:20:15,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:15,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:15,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:15,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:15,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:15,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:20:15,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 369 transitions, 4749 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:15,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:15,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:20:15,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:17,680 INFO L124 PetriNetUnfolderBase]: 7363/11197 cut-off events. [2024-06-27 18:20:17,680 INFO L125 PetriNetUnfolderBase]: For 973057/973103 co-relation queries the response was YES. [2024-06-27 18:20:17,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89664 conditions, 11197 events. 7363/11197 cut-off events. For 973057/973103 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 69490 event pairs, 1377 based on Foata normal form. 4/11084 useless extension candidates. Maximal degree in co-relation 89541. Up to 9949 conditions per place. [2024-06-27 18:20:17,839 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 321 selfloop transitions, 96 changer transitions 0/434 dead transitions. [2024-06-27 18:20:17,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 434 transitions, 5885 flow [2024-06-27 18:20:17,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:17,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:17,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 254 transitions. [2024-06-27 18:20:17,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5183673469387755 [2024-06-27 18:20:17,840 INFO L175 Difference]: Start difference. First operand has 279 places, 369 transitions, 4749 flow. Second operand 10 states and 254 transitions. [2024-06-27 18:20:17,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 434 transitions, 5885 flow [2024-06-27 18:20:19,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 434 transitions, 5509 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-27 18:20:19,386 INFO L231 Difference]: Finished difference. Result has 280 places, 371 transitions, 4675 flow [2024-06-27 18:20:19,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4373, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4675, PETRI_PLACES=280, PETRI_TRANSITIONS=371} [2024-06-27 18:20:19,387 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 225 predicate places. [2024-06-27 18:20:19,387 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 371 transitions, 4675 flow [2024-06-27 18:20:19,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:19,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:19,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:19,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:20:19,387 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:19,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:19,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1201709702, now seen corresponding path program 1 times [2024-06-27 18:20:19,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:19,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556935531] [2024-06-27 18:20:19,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:19,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:20,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:20,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:20,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556935531] [2024-06-27 18:20:20,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556935531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:20,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:20,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:20:20,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666498607] [2024-06-27 18:20:20,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:20,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:20:20,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:20,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:20:20,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:20:20,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:20:20,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 371 transitions, 4675 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:20,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:20,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:20:20,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:22,574 INFO L124 PetriNetUnfolderBase]: 7642/11929 cut-off events. [2024-06-27 18:20:22,574 INFO L125 PetriNetUnfolderBase]: For 1006953/1007003 co-relation queries the response was YES. [2024-06-27 18:20:22,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89172 conditions, 11929 events. 7642/11929 cut-off events. For 1006953/1007003 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 77177 event pairs, 2029 based on Foata normal form. 28/11681 useless extension candidates. Maximal degree in co-relation 89048. Up to 10478 conditions per place. [2024-06-27 18:20:22,751 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 326 selfloop transitions, 28 changer transitions 0/416 dead transitions. [2024-06-27 18:20:22,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 416 transitions, 5723 flow [2024-06-27 18:20:22,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:20:22,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:20:22,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 18:20:22,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131195335276968 [2024-06-27 18:20:22,752 INFO L175 Difference]: Start difference. First operand has 280 places, 371 transitions, 4675 flow. Second operand 7 states and 176 transitions. [2024-06-27 18:20:22,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 416 transitions, 5723 flow [2024-06-27 18:20:24,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 416 transitions, 5407 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-27 18:20:24,218 INFO L231 Difference]: Finished difference. Result has 279 places, 381 transitions, 4542 flow [2024-06-27 18:20:24,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4359, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4542, PETRI_PLACES=279, PETRI_TRANSITIONS=381} [2024-06-27 18:20:24,219 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 224 predicate places. [2024-06-27 18:20:24,219 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 381 transitions, 4542 flow [2024-06-27 18:20:24,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:24,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:24,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:24,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:20:24,220 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:24,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:24,220 INFO L85 PathProgramCache]: Analyzing trace with hash 871254873, now seen corresponding path program 1 times [2024-06-27 18:20:24,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:24,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251696481] [2024-06-27 18:20:24,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:24,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:25,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:25,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:25,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251696481] [2024-06-27 18:20:25,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251696481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:25,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:25,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:25,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574991773] [2024-06-27 18:20:25,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:25,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:25,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:25,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:25,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:25,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-27 18:20:25,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 381 transitions, 4542 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:25,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:25,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-27 18:20:25,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:28,178 INFO L124 PetriNetUnfolderBase]: 8245/12780 cut-off events. [2024-06-27 18:20:28,178 INFO L125 PetriNetUnfolderBase]: For 1052630/1052662 co-relation queries the response was YES. [2024-06-27 18:20:28,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97962 conditions, 12780 events. 8245/12780 cut-off events. For 1052630/1052662 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 82057 event pairs, 2238 based on Foata normal form. 2/12525 useless extension candidates. Maximal degree in co-relation 97836. Up to 11439 conditions per place. [2024-06-27 18:20:28,360 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 385 selfloop transitions, 38 changer transitions 0/438 dead transitions. [2024-06-27 18:20:28,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 438 transitions, 5678 flow [2024-06-27 18:20:28,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:28,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:28,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 227 transitions. [2024-06-27 18:20:28,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463265306122449 [2024-06-27 18:20:28,361 INFO L175 Difference]: Start difference. First operand has 279 places, 381 transitions, 4542 flow. Second operand 10 states and 227 transitions. [2024-06-27 18:20:28,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 438 transitions, 5678 flow [2024-06-27 18:20:30,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 438 transitions, 5639 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-27 18:20:30,087 INFO L231 Difference]: Finished difference. Result has 288 places, 389 transitions, 4757 flow [2024-06-27 18:20:30,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4503, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4757, PETRI_PLACES=288, PETRI_TRANSITIONS=389} [2024-06-27 18:20:30,088 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 233 predicate places. [2024-06-27 18:20:30,088 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 389 transitions, 4757 flow [2024-06-27 18:20:30,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:30,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:30,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:30,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:20:30,088 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:30,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:30,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1641803089, now seen corresponding path program 9 times [2024-06-27 18:20:30,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:30,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955267136] [2024-06-27 18:20:30,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:30,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:31,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:31,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:31,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955267136] [2024-06-27 18:20:31,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955267136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:31,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:31,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:31,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636639208] [2024-06-27 18:20:31,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:31,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:31,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:31,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:31,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:31,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:20:31,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 389 transitions, 4757 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:31,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:31,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:20:31,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:34,395 INFO L124 PetriNetUnfolderBase]: 7740/12103 cut-off events. [2024-06-27 18:20:34,395 INFO L125 PetriNetUnfolderBase]: For 1080914/1080974 co-relation queries the response was YES. [2024-06-27 18:20:34,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96412 conditions, 12103 events. 7740/12103 cut-off events. For 1080914/1080974 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 79514 event pairs, 1993 based on Foata normal form. 4/11865 useless extension candidates. Maximal degree in co-relation 96282. Up to 10394 conditions per place. [2024-06-27 18:20:34,558 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 386 selfloop transitions, 72 changer transitions 0/475 dead transitions. [2024-06-27 18:20:34,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 475 transitions, 6693 flow [2024-06-27 18:20:34,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:20:34,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:20:34,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 311 transitions. [2024-06-27 18:20:34,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48822605965463106 [2024-06-27 18:20:34,560 INFO L175 Difference]: Start difference. First operand has 288 places, 389 transitions, 4757 flow. Second operand 13 states and 311 transitions. [2024-06-27 18:20:34,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 475 transitions, 6693 flow [2024-06-27 18:20:36,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 475 transitions, 6557 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-27 18:20:36,245 INFO L231 Difference]: Finished difference. Result has 296 places, 405 transitions, 5341 flow [2024-06-27 18:20:36,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4621, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5341, PETRI_PLACES=296, PETRI_TRANSITIONS=405} [2024-06-27 18:20:36,246 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 241 predicate places. [2024-06-27 18:20:36,246 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 405 transitions, 5341 flow [2024-06-27 18:20:36,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:36,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:36,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:36,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:20:36,246 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:36,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:36,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1926009229, now seen corresponding path program 10 times [2024-06-27 18:20:36,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:36,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840791554] [2024-06-27 18:20:36,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:36,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:37,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:37,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:37,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840791554] [2024-06-27 18:20:37,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840791554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:37,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:37,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:37,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982970145] [2024-06-27 18:20:37,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:37,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:37,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:37,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:37,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:37,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:20:37,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 405 transitions, 5341 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:37,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:37,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:20:37,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:40,374 INFO L124 PetriNetUnfolderBase]: 7780/12174 cut-off events. [2024-06-27 18:20:40,375 INFO L125 PetriNetUnfolderBase]: For 1123035/1123097 co-relation queries the response was YES. [2024-06-27 18:20:40,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98937 conditions, 12174 events. 7780/12174 cut-off events. For 1123035/1123097 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 80094 event pairs, 2036 based on Foata normal form. 6/11933 useless extension candidates. Maximal degree in co-relation 98804. Up to 10580 conditions per place. [2024-06-27 18:20:40,567 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 405 selfloop transitions, 56 changer transitions 0/478 dead transitions. [2024-06-27 18:20:40,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 478 transitions, 6975 flow [2024-06-27 18:20:40,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 18:20:40,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 18:20:40,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 321 transitions. [2024-06-27 18:20:40,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4679300291545189 [2024-06-27 18:20:40,569 INFO L175 Difference]: Start difference. First operand has 296 places, 405 transitions, 5341 flow. Second operand 14 states and 321 transitions. [2024-06-27 18:20:40,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 478 transitions, 6975 flow [2024-06-27 18:20:42,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 478 transitions, 6602 flow, removed 163 selfloop flow, removed 6 redundant places. [2024-06-27 18:20:42,313 INFO L231 Difference]: Finished difference. Result has 305 places, 411 transitions, 5343 flow [2024-06-27 18:20:42,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4980, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5343, PETRI_PLACES=305, PETRI_TRANSITIONS=411} [2024-06-27 18:20:42,313 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 250 predicate places. [2024-06-27 18:20:42,313 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 411 transitions, 5343 flow [2024-06-27 18:20:42,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:42,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:42,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:42,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:20:42,314 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:42,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:42,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1992603985, now seen corresponding path program 11 times [2024-06-27 18:20:42,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:42,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270370029] [2024-06-27 18:20:42,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:42,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:44,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:44,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:44,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270370029] [2024-06-27 18:20:44,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270370029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:44,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:44,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:44,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19810478] [2024-06-27 18:20:44,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:44,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:44,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:44,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:44,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:44,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:20:44,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 411 transitions, 5343 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:44,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:44,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:20:44,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:47,432 INFO L124 PetriNetUnfolderBase]: 7841/12219 cut-off events. [2024-06-27 18:20:47,432 INFO L125 PetriNetUnfolderBase]: For 1153069/1153133 co-relation queries the response was YES. [2024-06-27 18:20:47,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100816 conditions, 12219 events. 7841/12219 cut-off events. For 1153069/1153133 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 80035 event pairs, 1943 based on Foata normal form. 4/11989 useless extension candidates. Maximal degree in co-relation 100680. Up to 10268 conditions per place. [2024-06-27 18:20:47,567 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 361 selfloop transitions, 121 changer transitions 0/499 dead transitions. [2024-06-27 18:20:47,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 499 transitions, 7338 flow [2024-06-27 18:20:47,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:20:47,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:20:47,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 298 transitions. [2024-06-27 18:20:47,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5068027210884354 [2024-06-27 18:20:47,568 INFO L175 Difference]: Start difference. First operand has 305 places, 411 transitions, 5343 flow. Second operand 12 states and 298 transitions. [2024-06-27 18:20:47,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 499 transitions, 7338 flow [2024-06-27 18:20:49,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 499 transitions, 7028 flow, removed 102 selfloop flow, removed 12 redundant places. [2024-06-27 18:20:49,304 INFO L231 Difference]: Finished difference. Result has 307 places, 427 transitions, 5849 flow [2024-06-27 18:20:49,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5045, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5849, PETRI_PLACES=307, PETRI_TRANSITIONS=427} [2024-06-27 18:20:49,304 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 252 predicate places. [2024-06-27 18:20:49,305 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 427 transitions, 5849 flow [2024-06-27 18:20:49,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:49,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:49,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:49,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:20:49,305 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:49,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:49,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1992609720, now seen corresponding path program 8 times [2024-06-27 18:20:49,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:49,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476957809] [2024-06-27 18:20:49,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:49,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:50,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:50,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:50,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476957809] [2024-06-27 18:20:50,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476957809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:50,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:50,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:50,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081482943] [2024-06-27 18:20:50,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:50,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:50,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:50,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:50,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:51,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:20:51,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 427 transitions, 5849 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:51,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:51,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:20:51,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:53,722 INFO L124 PetriNetUnfolderBase]: 7897/12362 cut-off events. [2024-06-27 18:20:53,722 INFO L125 PetriNetUnfolderBase]: For 1186529/1186591 co-relation queries the response was YES. [2024-06-27 18:20:53,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102404 conditions, 12362 events. 7897/12362 cut-off events. For 1186529/1186591 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 81606 event pairs, 2051 based on Foata normal form. 4/12115 useless extension candidates. Maximal degree in co-relation 102266. Up to 10873 conditions per place. [2024-06-27 18:20:53,912 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 412 selfloop transitions, 66 changer transitions 0/495 dead transitions. [2024-06-27 18:20:53,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 495 transitions, 7287 flow [2024-06-27 18:20:53,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:53,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:53,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2024-06-27 18:20:53,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040816326530613 [2024-06-27 18:20:53,914 INFO L175 Difference]: Start difference. First operand has 307 places, 427 transitions, 5849 flow. Second operand 10 states and 247 transitions. [2024-06-27 18:20:53,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 495 transitions, 7287 flow [2024-06-27 18:20:57,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 495 transitions, 6639 flow, removed 169 selfloop flow, removed 8 redundant places. [2024-06-27 18:20:57,147 INFO L231 Difference]: Finished difference. Result has 311 places, 438 transitions, 5694 flow [2024-06-27 18:20:57,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5207, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5694, PETRI_PLACES=311, PETRI_TRANSITIONS=438} [2024-06-27 18:20:57,148 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 256 predicate places. [2024-06-27 18:20:57,148 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 438 transitions, 5694 flow [2024-06-27 18:20:57,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:57,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:57,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:57,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:20:57,149 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:57,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:57,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1641601279, now seen corresponding path program 12 times [2024-06-27 18:20:57,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:57,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399951516] [2024-06-27 18:20:57,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:57,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:57,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:58,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:58,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:58,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399951516] [2024-06-27 18:20:58,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399951516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:58,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:58,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:58,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409765576] [2024-06-27 18:20:58,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:58,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:58,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:58,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:58,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:58,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:20:58,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 438 transitions, 5694 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:58,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:58,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:20:58,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:02,441 INFO L124 PetriNetUnfolderBase]: 7952/12429 cut-off events. [2024-06-27 18:21:02,441 INFO L125 PetriNetUnfolderBase]: For 1208989/1209055 co-relation queries the response was YES. [2024-06-27 18:21:02,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102423 conditions, 12429 events. 7952/12429 cut-off events. For 1208989/1209055 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 81971 event pairs, 2009 based on Foata normal form. 4/12185 useless extension candidates. Maximal degree in co-relation 102282. Up to 10691 conditions per place. [2024-06-27 18:21:02,592 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 412 selfloop transitions, 82 changer transitions 0/511 dead transitions. [2024-06-27 18:21:02,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 511 transitions, 7340 flow [2024-06-27 18:21:02,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:21:02,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:21:02,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 310 transitions. [2024-06-27 18:21:02,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48665620094191525 [2024-06-27 18:21:02,594 INFO L175 Difference]: Start difference. First operand has 311 places, 438 transitions, 5694 flow. Second operand 13 states and 310 transitions. [2024-06-27 18:21:02,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 511 transitions, 7340 flow [2024-06-27 18:21:04,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 511 transitions, 6989 flow, removed 132 selfloop flow, removed 6 redundant places. [2024-06-27 18:21:04,480 INFO L231 Difference]: Finished difference. Result has 319 places, 442 transitions, 5710 flow [2024-06-27 18:21:04,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5349, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5710, PETRI_PLACES=319, PETRI_TRANSITIONS=442} [2024-06-27 18:21:04,481 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 264 predicate places. [2024-06-27 18:21:04,481 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 442 transitions, 5710 flow [2024-06-27 18:21:04,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:04,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:04,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:04,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 18:21:04,481 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:04,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:04,481 INFO L85 PathProgramCache]: Analyzing trace with hash 576387647, now seen corresponding path program 13 times [2024-06-27 18:21:04,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:04,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104566607] [2024-06-27 18:21:04,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:04,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:05,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:05,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:05,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104566607] [2024-06-27 18:21:05,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104566607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:05,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:05,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:05,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202866069] [2024-06-27 18:21:05,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:05,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:05,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:05,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:05,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:06,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:21:06,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 442 transitions, 5710 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:06,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:06,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:21:06,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:09,809 INFO L124 PetriNetUnfolderBase]: 8003/12483 cut-off events. [2024-06-27 18:21:09,809 INFO L125 PetriNetUnfolderBase]: For 1245936/1246004 co-relation queries the response was YES. [2024-06-27 18:21:09,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104514 conditions, 12483 events. 8003/12483 cut-off events. For 1245936/1246004 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 82104 event pairs, 2010 based on Foata normal form. 4/12245 useless extension candidates. Maximal degree in co-relation 104371. Up to 10575 conditions per place. [2024-06-27 18:21:09,964 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 405 selfloop transitions, 95 changer transitions 0/517 dead transitions. [2024-06-27 18:21:09,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 517 transitions, 7506 flow [2024-06-27 18:21:09,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:21:09,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:21:09,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 311 transitions. [2024-06-27 18:21:09,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48822605965463106 [2024-06-27 18:21:09,966 INFO L175 Difference]: Start difference. First operand has 319 places, 442 transitions, 5710 flow. Second operand 13 states and 311 transitions. [2024-06-27 18:21:09,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 517 transitions, 7506 flow [2024-06-27 18:21:11,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 517 transitions, 7271 flow, removed 69 selfloop flow, removed 8 redundant places. [2024-06-27 18:21:11,735 INFO L231 Difference]: Finished difference. Result has 325 places, 448 transitions, 5997 flow [2024-06-27 18:21:11,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5475, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5997, PETRI_PLACES=325, PETRI_TRANSITIONS=448} [2024-06-27 18:21:11,735 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 270 predicate places. [2024-06-27 18:21:11,735 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 448 transitions, 5997 flow [2024-06-27 18:21:11,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:11,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:11,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:11,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 18:21:11,736 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:11,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:11,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1480881263, now seen corresponding path program 14 times [2024-06-27 18:21:11,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:11,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045325065] [2024-06-27 18:21:11,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:11,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:13,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:13,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:13,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045325065] [2024-06-27 18:21:13,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045325065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:13,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:13,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:13,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684180986] [2024-06-27 18:21:13,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:13,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:13,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:13,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:13,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:13,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:21:13,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 448 transitions, 5997 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:13,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:13,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:21:13,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:16,729 INFO L124 PetriNetUnfolderBase]: 8044/12560 cut-off events. [2024-06-27 18:21:16,729 INFO L125 PetriNetUnfolderBase]: For 1292602/1292666 co-relation queries the response was YES. [2024-06-27 18:21:16,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106514 conditions, 12560 events. 8044/12560 cut-off events. For 1292602/1292666 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 82787 event pairs, 2067 based on Foata normal form. 4/12319 useless extension candidates. Maximal degree in co-relation 106369. Up to 10711 conditions per place. [2024-06-27 18:21:17,116 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 427 selfloop transitions, 65 changer transitions 0/509 dead transitions. [2024-06-27 18:21:17,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 509 transitions, 7309 flow [2024-06-27 18:21:17,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:21:17,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:21:17,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2024-06-27 18:21:17,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163265306122449 [2024-06-27 18:21:17,118 INFO L175 Difference]: Start difference. First operand has 325 places, 448 transitions, 5997 flow. Second operand 10 states and 253 transitions. [2024-06-27 18:21:17,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 509 transitions, 7309 flow [2024-06-27 18:21:19,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 509 transitions, 6946 flow, removed 131 selfloop flow, removed 9 redundant places. [2024-06-27 18:21:19,317 INFO L231 Difference]: Finished difference. Result has 326 places, 451 transitions, 5926 flow [2024-06-27 18:21:19,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5634, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5926, PETRI_PLACES=326, PETRI_TRANSITIONS=451} [2024-06-27 18:21:19,317 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 271 predicate places. [2024-06-27 18:21:19,317 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 451 transitions, 5926 flow [2024-06-27 18:21:19,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:19,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:19,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:19,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 18:21:19,318 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:19,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:19,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1987241605, now seen corresponding path program 15 times [2024-06-27 18:21:19,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:19,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073106952] [2024-06-27 18:21:19,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:19,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:21,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:21,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:21,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073106952] [2024-06-27 18:21:21,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073106952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:21,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:21,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:21,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778799753] [2024-06-27 18:21:21,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:21,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:21,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:21,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:21,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:21,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:21:21,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 451 transitions, 5926 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:21,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:21,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:21:21,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:24,515 INFO L124 PetriNetUnfolderBase]: 8105/12674 cut-off events. [2024-06-27 18:21:24,515 INFO L125 PetriNetUnfolderBase]: For 1331348/1331418 co-relation queries the response was YES. [2024-06-27 18:21:24,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108422 conditions, 12674 events. 8105/12674 cut-off events. For 1331348/1331418 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 83895 event pairs, 1990 based on Foata normal form. 4/12425 useless extension candidates. Maximal degree in co-relation 108275. Up to 10635 conditions per place. [2024-06-27 18:21:24,951 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 393 selfloop transitions, 118 changer transitions 0/528 dead transitions. [2024-06-27 18:21:24,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 528 transitions, 7718 flow [2024-06-27 18:21:24,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:21:24,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:21:24,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 301 transitions. [2024-06-27 18:21:24,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-27 18:21:24,953 INFO L175 Difference]: Start difference. First operand has 326 places, 451 transitions, 5926 flow. Second operand 12 states and 301 transitions. [2024-06-27 18:21:24,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 528 transitions, 7718 flow [2024-06-27 18:21:26,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 528 transitions, 7450 flow, removed 71 selfloop flow, removed 8 redundant places. [2024-06-27 18:21:26,970 INFO L231 Difference]: Finished difference. Result has 330 places, 457 transitions, 6153 flow [2024-06-27 18:21:26,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5658, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6153, PETRI_PLACES=330, PETRI_TRANSITIONS=457} [2024-06-27 18:21:26,971 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 275 predicate places. [2024-06-27 18:21:26,971 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 457 transitions, 6153 flow [2024-06-27 18:21:26,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:26,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:26,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:26,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 18:21:26,972 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:26,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:26,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1480673718, now seen corresponding path program 9 times [2024-06-27 18:21:26,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:26,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283910050] [2024-06-27 18:21:26,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:26,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:28,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:28,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:28,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283910050] [2024-06-27 18:21:28,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283910050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:28,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:28,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:28,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545737540] [2024-06-27 18:21:28,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:28,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:28,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:28,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:28,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:29,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:21:29,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 457 transitions, 6153 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:29,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:29,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:21:29,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:32,511 INFO L124 PetriNetUnfolderBase]: 8138/12762 cut-off events. [2024-06-27 18:21:32,511 INFO L125 PetriNetUnfolderBase]: For 1371673/1371741 co-relation queries the response was YES. [2024-06-27 18:21:32,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109821 conditions, 12762 events. 8138/12762 cut-off events. For 1371673/1371741 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 84900 event pairs, 2092 based on Foata normal form. 4/12503 useless extension candidates. Maximal degree in co-relation 109673. Up to 11212 conditions per place. [2024-06-27 18:21:32,697 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 434 selfloop transitions, 68 changer transitions 0/519 dead transitions. [2024-06-27 18:21:32,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 519 transitions, 7611 flow [2024-06-27 18:21:32,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:21:32,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:21:32,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 281 transitions. [2024-06-27 18:21:32,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.477891156462585 [2024-06-27 18:21:32,699 INFO L175 Difference]: Start difference. First operand has 330 places, 457 transitions, 6153 flow. Second operand 12 states and 281 transitions. [2024-06-27 18:21:32,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 519 transitions, 7611 flow [2024-06-27 18:21:35,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 519 transitions, 6950 flow, removed 157 selfloop flow, removed 12 redundant places. [2024-06-27 18:21:35,656 INFO L231 Difference]: Finished difference. Result has 331 places, 462 transitions, 5934 flow [2024-06-27 18:21:35,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5492, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5934, PETRI_PLACES=331, PETRI_TRANSITIONS=462} [2024-06-27 18:21:35,656 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 276 predicate places. [2024-06-27 18:21:35,656 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 462 transitions, 5934 flow [2024-06-27 18:21:35,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:35,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:35,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:35,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 18:21:35,657 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:35,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:35,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1641595544, now seen corresponding path program 10 times [2024-06-27 18:21:35,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:35,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184018938] [2024-06-27 18:21:35,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:35,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:37,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:37,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:37,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184018938] [2024-06-27 18:21:37,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184018938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:37,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:37,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:37,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852149689] [2024-06-27 18:21:37,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:37,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:37,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:37,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:37,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:37,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:21:37,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 462 transitions, 5934 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:37,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:37,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:21:37,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand