./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix042.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix042.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/mix042.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix042.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 18:33:26,996 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:33:27,093 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:33:27,100 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:33:27,101 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:33:27,148 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:33:27,149 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:33:27,149 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:33:27,150 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:33:27,155 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:33:27,155 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:33:27,155 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:33:27,157 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:33:27,158 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:33:27,158 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:33:27,158 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:33:27,158 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:33:27,159 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:33:27,159 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:33:27,159 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:33:27,159 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:33:27,160 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:33:27,160 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:33:27,160 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:33:27,161 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:33:27,161 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:33:27,161 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:33:27,161 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:33:27,162 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:33:27,162 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:33:27,163 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:33:27,164 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:33:27,164 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:33:27,164 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:33:27,164 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:33:27,164 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:33:27,165 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:33:27,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:33:27,165 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:33:27,165 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:33:27,165 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:33:27,166 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:33:27,166 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:33:27,166 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:33:27,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:33:27,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:33:27,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:33:27,437 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:33:27,437 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:33:27,438 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix042.oepc.yml/witness.yml [2024-06-27 18:33:27,707 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:33:27,707 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:33:27,708 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix042.oepc.i [2024-06-27 18:33:28,877 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:33:29,148 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:33:29,149 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix042.oepc.i [2024-06-27 18:33:29,165 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be1134eaf/64e36a908e4a44769e6adc6b1f187b96/FLAG56786f7d1 [2024-06-27 18:33:29,187 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be1134eaf/64e36a908e4a44769e6adc6b1f187b96 [2024-06-27 18:33:29,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:33:29,188 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:33:29,189 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:33:29,189 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:33:29,194 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:33:29,195 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:33:27" (1/2) ... [2024-06-27 18:33:29,196 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ac1e05 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:33:29, skipping insertion in model container [2024-06-27 18:33:29,196 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:33:27" (1/2) ... [2024-06-27 18:33:29,197 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@50ec62c6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:33:29, skipping insertion in model container [2024-06-27 18:33:29,198 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:33:29" (2/2) ... [2024-06-27 18:33:29,198 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ac1e05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:29, skipping insertion in model container [2024-06-27 18:33:29,198 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:33:29" (2/2) ... [2024-06-27 18:33:29,198 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:33:29,337 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:33:29,338 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] (((((((((((((((((((! multithreaded || a$r_buff1_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (x == 0 || x == 1)) [2024-06-27 18:33:29,338 INFO L97 edCorrectnessWitness]: Location invariant before [L846-L846] (((((((((((((((((((! multithreaded || a$r_buff1_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (x == 0 || x == 1)) [2024-06-27 18:33:29,339 INFO L97 edCorrectnessWitness]: Location invariant before [L848-L848] (((((((((((((((((((! multithreaded || a$r_buff1_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (x == 0 || x == 1)) [2024-06-27 18:33:29,339 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:33:29,339 INFO L106 edCorrectnessWitness]: ghost_update [L844-L844] multithreaded = 1; [2024-06-27 18:33:29,386 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:33:29,569 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/mix042.oepc.i[945,958] [2024-06-27 18:33:29,743 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:33:29,753 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:33:29,791 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/mix042.oepc.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:33:29,878 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:33:29,921 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:33:29,921 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:29 WrapperNode [2024-06-27 18:33:29,921 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:33:29,926 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:33:29,926 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:33:29,926 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:33:29,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:29" (1/1) ... [2024-06-27 18:33:29,950 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:29" (1/1) ... [2024-06-27 18:33:29,981 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 123 [2024-06-27 18:33:29,982 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:33:29,997 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:33:29,997 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:33:29,997 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:33:30,008 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:29" (1/1) ... [2024-06-27 18:33:30,008 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:29" (1/1) ... [2024-06-27 18:33:30,012 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:29" (1/1) ... [2024-06-27 18:33:30,029 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 18:33:30,029 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:29" (1/1) ... [2024-06-27 18:33:30,030 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:29" (1/1) ... [2024-06-27 18:33:30,051 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:29" (1/1) ... [2024-06-27 18:33:30,053 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:29" (1/1) ... [2024-06-27 18:33:30,055 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:29" (1/1) ... [2024-06-27 18:33:30,057 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:29" (1/1) ... [2024-06-27 18:33:30,060 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:33:30,060 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:33:30,060 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:33:30,061 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:33:30,061 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:29" (1/1) ... [2024-06-27 18:33:30,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:33:30,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:33:30,088 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 18:33:30,098 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 18:33:30,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:33:30,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:33:30,126 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:33:30,126 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:33:30,127 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:33:30,127 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:33:30,127 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:33:30,127 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:33:30,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:33:30,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:33:30,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:33:30,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:33:30,129 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 18:33:30,289 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:33:30,292 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:33:30,714 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:33:30,714 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:33:30,924 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:33:30,925 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:33:30,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:33:30 BoogieIcfgContainer [2024-06-27 18:33:30,926 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:33:30,929 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:33:30,929 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:33:30,932 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:33:30,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:33:27" (1/4) ... [2024-06-27 18:33:30,933 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26bc049a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:33:30, skipping insertion in model container [2024-06-27 18:33:30,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:33:29" (2/4) ... [2024-06-27 18:33:30,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26bc049a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:33:30, skipping insertion in model container [2024-06-27 18:33:30,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:29" (3/4) ... [2024-06-27 18:33:30,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26bc049a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:33:30, skipping insertion in model container [2024-06-27 18:33:30,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:33:30" (4/4) ... [2024-06-27 18:33:30,936 INFO L112 eAbstractionObserver]: Analyzing ICFG mix042.oepc.i [2024-06-27 18:33:30,949 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:33:30,949 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:33:30,949 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:33:30,991 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:33:31,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 18:33:31,039 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-27 18:33:31,042 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:33:31,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 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. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-27 18:33:31,046 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 18:33:31,050 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-27 18:33:31,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:33:31,064 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;@ad2c02a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:33:31,064 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:33:31,069 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:33:31,069 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:33:31,069 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:33:31,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:31,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:33:31,070 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 18:33:31,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:31,079 INFO L85 PathProgramCache]: Analyzing trace with hash 359830693, now seen corresponding path program 1 times [2024-06-27 18:33:31,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:31,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325440414] [2024-06-27 18:33:31,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:31,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:31,807 INFO 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 18:33:31,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:31,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325440414] [2024-06-27 18:33:31,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325440414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:31,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:31,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:33:31,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195728195] [2024-06-27 18:33:31,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:31,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:33:31,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:31,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:33:31,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:33:31,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 18:33:31,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:31,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:31,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 18:33:31,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:32,674 INFO L124 PetriNetUnfolderBase]: 4452/7191 cut-off events. [2024-06-27 18:33:32,674 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-27 18:33:32,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13664 conditions, 7191 events. 4452/7191 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 46493 event pairs, 3409 based on Foata normal form. 217/6782 useless extension candidates. Maximal degree in co-relation 13652. Up to 6370 conditions per place. [2024-06-27 18:33:32,711 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 42 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-06-27 18:33:32,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 227 flow [2024-06-27 18:33:32,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:33:32,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:33:32,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-06-27 18:33:32,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6736111111111112 [2024-06-27 18:33:32,721 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 97 transitions. [2024-06-27 18:33:32,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 227 flow [2024-06-27 18:33:32,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 222 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:33:32,726 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 131 flow [2024-06-27 18:33:32,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-06-27 18:33:32,730 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-27 18:33:32,730 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 131 flow [2024-06-27 18:33:32,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:32,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:32,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:33:32,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:33:32,731 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 18:33:32,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:32,731 INFO L85 PathProgramCache]: Analyzing trace with hash 359830807, now seen corresponding path program 1 times [2024-06-27 18:33:32,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:32,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080697361] [2024-06-27 18:33:32,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:32,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:32,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:32,776 INFO 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 18:33:32,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:32,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080697361] [2024-06-27 18:33:32,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080697361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:32,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:32,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:33:32,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922443686] [2024-06-27 18:33:32,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:32,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:33:32,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:32,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:33:32,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:33:32,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 48 [2024-06-27 18:33:32,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:32,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:32,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 48 [2024-06-27 18:33:32,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:33,054 INFO L124 PetriNetUnfolderBase]: 950/1823 cut-off events. [2024-06-27 18:33:33,055 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-06-27 18:33:33,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3525 conditions, 1823 events. 950/1823 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 12204 event pairs, 463 based on Foata normal form. 0/1697 useless extension candidates. Maximal degree in co-relation 3513. Up to 1207 conditions per place. [2024-06-27 18:33:33,065 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 35 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-06-27 18:33:33,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 62 transitions, 234 flow [2024-06-27 18:33:33,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:33:33,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:33:33,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-06-27 18:33:33,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7847222222222222 [2024-06-27 18:33:33,067 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 131 flow. Second operand 3 states and 113 transitions. [2024-06-27 18:33:33,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 62 transitions, 234 flow [2024-06-27 18:33:33,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 62 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:33:33,069 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 124 flow [2024-06-27 18:33:33,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-27 18:33:33,070 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-27 18:33:33,070 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 124 flow [2024-06-27 18:33:33,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:33,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:33,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:33,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:33:33,071 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 18:33:33,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:33,071 INFO L85 PathProgramCache]: Analyzing trace with hash -2095024477, now seen corresponding path program 1 times [2024-06-27 18:33:33,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:33,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042252647] [2024-06-27 18:33:33,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:33,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:33,638 INFO 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 18:33:33,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:33,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042252647] [2024-06-27 18:33:33,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042252647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:33,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:33,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:33:33,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453275429] [2024-06-27 18:33:33,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:33,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:33:33,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:33,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:33:33,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:33:33,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 18:33:33,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:33,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:33,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 18:33:33,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:34,199 INFO L124 PetriNetUnfolderBase]: 3660/5862 cut-off events. [2024-06-27 18:33:34,199 INFO L125 PetriNetUnfolderBase]: For 1442/1442 co-relation queries the response was YES. [2024-06-27 18:33:34,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12560 conditions, 5862 events. 3660/5862 cut-off events. For 1442/1442 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 36151 event pairs, 2257 based on Foata normal form. 3/5637 useless extension candidates. Maximal degree in co-relation 12547. Up to 5239 conditions per place. [2024-06-27 18:33:34,231 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 50 selfloop transitions, 8 changer transitions 2/72 dead transitions. [2024-06-27 18:33:34,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 72 transitions, 316 flow [2024-06-27 18:33:34,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:33:34,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:33:34,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-06-27 18:33:34,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-27 18:33:34,233 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 124 flow. Second operand 4 states and 120 transitions. [2024-06-27 18:33:34,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 72 transitions, 316 flow [2024-06-27 18:33:34,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 308 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:33:34,235 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 185 flow [2024-06-27 18:33:34,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-06-27 18:33:34,236 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-06-27 18:33:34,236 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 185 flow [2024-06-27 18:33:34,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:34,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:34,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:34,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:33:34,237 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 18:33:34,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:34,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1021172898, now seen corresponding path program 1 times [2024-06-27 18:33:34,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:34,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655166757] [2024-06-27 18:33:34,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:34,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:35,109 INFO 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 18:33:35,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:35,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655166757] [2024-06-27 18:33:35,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655166757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:35,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:35,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:33:35,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756310887] [2024-06-27 18:33:35,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:35,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:33:35,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:35,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:33:35,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:33:35,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 18:33:35,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 185 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:35,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:35,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 18:33:35,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:35,780 INFO L124 PetriNetUnfolderBase]: 3816/6180 cut-off events. [2024-06-27 18:33:35,780 INFO L125 PetriNetUnfolderBase]: For 2576/2576 co-relation queries the response was YES. [2024-06-27 18:33:35,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14188 conditions, 6180 events. 3816/6180 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 38602 event pairs, 1750 based on Foata normal form. 3/5947 useless extension candidates. Maximal degree in co-relation 14173. Up to 5421 conditions per place. [2024-06-27 18:33:35,883 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 71 selfloop transitions, 14 changer transitions 0/96 dead transitions. [2024-06-27 18:33:35,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 96 transitions, 483 flow [2024-06-27 18:33:35,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:33:35,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:33:35,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-06-27 18:33:35,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5868055555555556 [2024-06-27 18:33:35,886 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 185 flow. Second operand 6 states and 169 transitions. [2024-06-27 18:33:35,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 96 transitions, 483 flow [2024-06-27 18:33:35,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 96 transitions, 466 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-27 18:33:35,888 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 248 flow [2024-06-27 18:33:35,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=248, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-06-27 18:33:35,889 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2024-06-27 18:33:35,890 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 248 flow [2024-06-27 18:33:35,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:35,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:35,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:35,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:33:35,890 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 18:33:35,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:35,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1591589873, now seen corresponding path program 1 times [2024-06-27 18:33:35,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:35,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391292750] [2024-06-27 18:33:35,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:35,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:37,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:33:37,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:37,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391292750] [2024-06-27 18:33:37,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391292750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:37,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:37,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:33:37,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838451232] [2024-06-27 18:33:37,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:37,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:33:37,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:37,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:33:37,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:33:37,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 18:33:37,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 248 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:37,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:37,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 18:33:37,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:38,278 INFO L124 PetriNetUnfolderBase]: 3815/6171 cut-off events. [2024-06-27 18:33:38,278 INFO L125 PetriNetUnfolderBase]: For 4950/4950 co-relation queries the response was YES. [2024-06-27 18:33:38,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15491 conditions, 6171 events. 3815/6171 cut-off events. For 4950/4950 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 38537 event pairs, 1400 based on Foata normal form. 6/5943 useless extension candidates. Maximal degree in co-relation 15473. Up to 5376 conditions per place. [2024-06-27 18:33:38,332 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 78 selfloop transitions, 16 changer transitions 0/105 dead transitions. [2024-06-27 18:33:38,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 105 transitions, 562 flow [2024-06-27 18:33:38,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:33:38,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:33:38,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-06-27 18:33:38,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-27 18:33:38,335 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 248 flow. Second operand 7 states and 192 transitions. [2024-06-27 18:33:38,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 105 transitions, 562 flow [2024-06-27 18:33:38,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 105 transitions, 532 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 18:33:38,348 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 269 flow [2024-06-27 18:33:38,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=269, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2024-06-27 18:33:38,351 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 11 predicate places. [2024-06-27 18:33:38,356 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 269 flow [2024-06-27 18:33:38,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:38,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:38,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:38,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:33:38,358 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 18:33:38,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:38,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1065156080, now seen corresponding path program 1 times [2024-06-27 18:33:38,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:38,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006665447] [2024-06-27 18:33:38,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:38,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:39,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:33:39,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:39,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006665447] [2024-06-27 18:33:39,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006665447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:39,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:39,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:33:39,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391410333] [2024-06-27 18:33:39,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:39,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:33:39,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:39,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:33:39,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:33:39,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:33:39,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 269 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 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 18:33:39,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:39,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:33:39,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:40,032 INFO L124 PetriNetUnfolderBase]: 4446/7238 cut-off events. [2024-06-27 18:33:40,033 INFO L125 PetriNetUnfolderBase]: For 8168/8168 co-relation queries the response was YES. [2024-06-27 18:33:40,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18647 conditions, 7238 events. 4446/7238 cut-off events. For 8168/8168 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 45940 event pairs, 2020 based on Foata normal form. 2/7021 useless extension candidates. Maximal degree in co-relation 18627. Up to 6340 conditions per place. [2024-06-27 18:33:40,083 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 60 selfloop transitions, 11 changer transitions 0/80 dead transitions. [2024-06-27 18:33:40,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 80 transitions, 471 flow [2024-06-27 18:33:40,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:33:40,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:33:40,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-27 18:33:40,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2024-06-27 18:33:40,085 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 269 flow. Second operand 5 states and 119 transitions. [2024-06-27 18:33:40,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 80 transitions, 471 flow [2024-06-27 18:33:40,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 80 transitions, 430 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 18:33:40,092 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 281 flow [2024-06-27 18:33:40,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=281, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2024-06-27 18:33:40,095 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 11 predicate places. [2024-06-27 18:33:40,095 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 281 flow [2024-06-27 18:33:40,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 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 18:33:40,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:40,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:40,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:33:40,096 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 18:33:40,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:40,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1307724137, now seen corresponding path program 1 times [2024-06-27 18:33:40,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:40,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036973295] [2024-06-27 18:33:40,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:40,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:40,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:33:40,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:40,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036973295] [2024-06-27 18:33:40,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036973295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:40,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:40,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:33:40,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851664770] [2024-06-27 18:33:40,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:40,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:33:40,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:40,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:33:40,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:33:40,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:33:40,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 281 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:40,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:40,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:33:40,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:41,670 INFO L124 PetriNetUnfolderBase]: 4474/7276 cut-off events. [2024-06-27 18:33:41,671 INFO L125 PetriNetUnfolderBase]: For 10820/10820 co-relation queries the response was YES. [2024-06-27 18:33:41,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19671 conditions, 7276 events. 4474/7276 cut-off events. For 10820/10820 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 46048 event pairs, 1915 based on Foata normal form. 6/7099 useless extension candidates. Maximal degree in co-relation 19649. Up to 6258 conditions per place. [2024-06-27 18:33:41,710 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 76 selfloop transitions, 19 changer transitions 0/104 dead transitions. [2024-06-27 18:33:41,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 104 transitions, 621 flow [2024-06-27 18:33:41,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:33:41,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:33:41,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-27 18:33:41,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 18:33:41,712 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 281 flow. Second operand 6 states and 150 transitions. [2024-06-27 18:33:41,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 104 transitions, 621 flow [2024-06-27 18:33:41,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 104 transitions, 594 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 18:33:41,717 INFO L231 Difference]: Finished difference. Result has 70 places, 73 transitions, 386 flow [2024-06-27 18:33:41,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=386, PETRI_PLACES=70, PETRI_TRANSITIONS=73} [2024-06-27 18:33:41,733 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2024-06-27 18:33:41,733 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 73 transitions, 386 flow [2024-06-27 18:33:41,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:41,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:41,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:41,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:33:41,734 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 18:33:41,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:41,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1799335688, now seen corresponding path program 1 times [2024-06-27 18:33:41,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:41,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430821976] [2024-06-27 18:33:41,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:41,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:42,367 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 18:33:42,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:42,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430821976] [2024-06-27 18:33:42,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430821976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:42,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:42,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:33:42,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607253161] [2024-06-27 18:33:42,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:42,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:33:42,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:42,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:33:42,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:33:42,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:33:42,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 73 transitions, 386 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:42,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:42,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:33:42,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:43,116 INFO L124 PetriNetUnfolderBase]: 4502/7242 cut-off events. [2024-06-27 18:33:43,117 INFO L125 PetriNetUnfolderBase]: For 16301/16307 co-relation queries the response was YES. [2024-06-27 18:33:43,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21862 conditions, 7242 events. 4502/7242 cut-off events. For 16301/16307 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 44859 event pairs, 1729 based on Foata normal form. 6/7061 useless extension candidates. Maximal degree in co-relation 21837. Up to 6368 conditions per place. [2024-06-27 18:33:43,159 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 86 selfloop transitions, 18 changer transitions 0/113 dead transitions. [2024-06-27 18:33:43,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 113 transitions, 763 flow [2024-06-27 18:33:43,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:33:43,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:33:43,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-27 18:33:43,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-27 18:33:43,161 INFO L175 Difference]: Start difference. First operand has 70 places, 73 transitions, 386 flow. Second operand 6 states and 148 transitions. [2024-06-27 18:33:43,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 113 transitions, 763 flow [2024-06-27 18:33:43,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 113 transitions, 747 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-27 18:33:43,170 INFO L231 Difference]: Finished difference. Result has 76 places, 83 transitions, 507 flow [2024-06-27 18:33:43,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=507, PETRI_PLACES=76, PETRI_TRANSITIONS=83} [2024-06-27 18:33:43,171 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 22 predicate places. [2024-06-27 18:33:43,171 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 83 transitions, 507 flow [2024-06-27 18:33:43,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:43,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:43,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:43,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:33:43,172 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 18:33:43,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:43,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1851681968, now seen corresponding path program 2 times [2024-06-27 18:33:43,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:43,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321802227] [2024-06-27 18:33:43,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:43,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:43,721 INFO 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 18:33:43,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:43,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321802227] [2024-06-27 18:33:43,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321802227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:43,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:43,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:33:43,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407933343] [2024-06-27 18:33:43,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:43,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:33:43,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:43,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:33:43,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:33:43,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:33:43,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 83 transitions, 507 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:43,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:43,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:33:43,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:44,675 INFO L124 PetriNetUnfolderBase]: 4497/7355 cut-off events. [2024-06-27 18:33:44,675 INFO L125 PetriNetUnfolderBase]: For 20676/20676 co-relation queries the response was YES. [2024-06-27 18:33:44,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23303 conditions, 7355 events. 4497/7355 cut-off events. For 20676/20676 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 46850 event pairs, 1937 based on Foata normal form. 2/7170 useless extension candidates. Maximal degree in co-relation 23274. Up to 6401 conditions per place. [2024-06-27 18:33:44,767 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 84 selfloop transitions, 13 changer transitions 0/106 dead transitions. [2024-06-27 18:33:44,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 106 transitions, 759 flow [2024-06-27 18:33:44,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:33:44,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:33:44,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-27 18:33:44,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-27 18:33:44,769 INFO L175 Difference]: Start difference. First operand has 76 places, 83 transitions, 507 flow. Second operand 6 states and 140 transitions. [2024-06-27 18:33:44,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 106 transitions, 759 flow [2024-06-27 18:33:44,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 106 transitions, 723 flow, removed 17 selfloop flow, removed 1 redundant places. [2024-06-27 18:33:44,782 INFO L231 Difference]: Finished difference. Result has 81 places, 83 transitions, 505 flow [2024-06-27 18:33:44,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=505, PETRI_PLACES=81, PETRI_TRANSITIONS=83} [2024-06-27 18:33:44,784 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 27 predicate places. [2024-06-27 18:33:44,784 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 83 transitions, 505 flow [2024-06-27 18:33:44,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:44,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:44,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:44,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:33:44,788 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 18:33:44,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:44,788 INFO L85 PathProgramCache]: Analyzing trace with hash 641731253, now seen corresponding path program 1 times [2024-06-27 18:33:44,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:44,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721587318] [2024-06-27 18:33:44,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:44,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:45,582 INFO 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 18:33:45,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:45,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721587318] [2024-06-27 18:33:45,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721587318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:45,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:45,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:33:45,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853439577] [2024-06-27 18:33:45,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:45,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:33:45,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:45,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:33:45,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:33:45,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:33:45,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 83 transitions, 505 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:45,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:45,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:33:45,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:46,626 INFO L124 PetriNetUnfolderBase]: 4520/7265 cut-off events. [2024-06-27 18:33:46,626 INFO L125 PetriNetUnfolderBase]: For 21996/21996 co-relation queries the response was YES. [2024-06-27 18:33:46,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23276 conditions, 7265 events. 4520/7265 cut-off events. For 21996/21996 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 44976 event pairs, 1676 based on Foata normal form. 2/7081 useless extension candidates. Maximal degree in co-relation 23244. Up to 6400 conditions per place. [2024-06-27 18:33:46,678 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 101 selfloop transitions, 15 changer transitions 0/125 dead transitions. [2024-06-27 18:33:46,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 125 transitions, 869 flow [2024-06-27 18:33:46,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:33:46,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:33:46,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 18:33:46,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-06-27 18:33:46,680 INFO L175 Difference]: Start difference. First operand has 81 places, 83 transitions, 505 flow. Second operand 7 states and 170 transitions. [2024-06-27 18:33:46,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 125 transitions, 869 flow [2024-06-27 18:33:46,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 125 transitions, 826 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 18:33:46,696 INFO L231 Difference]: Finished difference. Result has 82 places, 86 transitions, 534 flow [2024-06-27 18:33:46,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=534, PETRI_PLACES=82, PETRI_TRANSITIONS=86} [2024-06-27 18:33:46,697 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 28 predicate places. [2024-06-27 18:33:46,697 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 86 transitions, 534 flow [2024-06-27 18:33:46,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:46,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:46,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:46,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:33:46,698 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 18:33:46,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:46,699 INFO L85 PathProgramCache]: Analyzing trace with hash -55167049, now seen corresponding path program 1 times [2024-06-27 18:33:46,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:46,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846769798] [2024-06-27 18:33:46,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:46,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:47,446 INFO 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 18:33:47,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:47,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846769798] [2024-06-27 18:33:47,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846769798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:47,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:47,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:33:47,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046105411] [2024-06-27 18:33:47,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:47,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:33:47,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:47,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:33:47,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:33:47,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:33:47,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 86 transitions, 534 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:47,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:47,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:33:47,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:48,249 INFO L124 PetriNetUnfolderBase]: 4732/7599 cut-off events. [2024-06-27 18:33:48,250 INFO L125 PetriNetUnfolderBase]: For 27906/27915 co-relation queries the response was YES. [2024-06-27 18:33:48,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25435 conditions, 7599 events. 4732/7599 cut-off events. For 27906/27915 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 47243 event pairs, 1554 based on Foata normal form. 8/7412 useless extension candidates. Maximal degree in co-relation 25404. Up to 6397 conditions per place. [2024-06-27 18:33:48,294 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 114 selfloop transitions, 31 changer transitions 0/154 dead transitions. [2024-06-27 18:33:48,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 154 transitions, 1184 flow [2024-06-27 18:33:48,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:33:48,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:33:48,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 18:33:48,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446428571428571 [2024-06-27 18:33:48,298 INFO L175 Difference]: Start difference. First operand has 82 places, 86 transitions, 534 flow. Second operand 7 states and 183 transitions. [2024-06-27 18:33:48,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 154 transitions, 1184 flow [2024-06-27 18:33:48,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 154 transitions, 1136 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 18:33:48,316 INFO L231 Difference]: Finished difference. Result has 87 places, 106 transitions, 742 flow [2024-06-27 18:33:48,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=742, PETRI_PLACES=87, PETRI_TRANSITIONS=106} [2024-06-27 18:33:48,317 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 33 predicate places. [2024-06-27 18:33:48,317 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 106 transitions, 742 flow [2024-06-27 18:33:48,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:48,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:48,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:48,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:33:48,318 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 18:33:48,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:48,318 INFO L85 PathProgramCache]: Analyzing trace with hash -55167235, now seen corresponding path program 2 times [2024-06-27 18:33:48,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:48,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671894089] [2024-06-27 18:33:48,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:48,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:49,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:33:49,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:49,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671894089] [2024-06-27 18:33:49,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671894089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:49,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:49,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:33:49,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952036872] [2024-06-27 18:33:49,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:49,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:33:49,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:49,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:33:49,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:33:49,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:33:49,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 106 transitions, 742 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:49,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:49,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:33:49,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:49,952 INFO L124 PetriNetUnfolderBase]: 4760/7652 cut-off events. [2024-06-27 18:33:49,953 INFO L125 PetriNetUnfolderBase]: For 37594/37603 co-relation queries the response was YES. [2024-06-27 18:33:49,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28705 conditions, 7652 events. 4760/7652 cut-off events. For 37594/37603 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 47688 event pairs, 1614 based on Foata normal form. 8/7458 useless extension candidates. Maximal degree in co-relation 28670. Up to 6649 conditions per place. [2024-06-27 18:33:49,996 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 113 selfloop transitions, 28 changer transitions 0/150 dead transitions. [2024-06-27 18:33:49,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 150 transitions, 1246 flow [2024-06-27 18:33:49,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:33:49,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:33:49,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 18:33:49,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148809523809523 [2024-06-27 18:33:49,998 INFO L175 Difference]: Start difference. First operand has 87 places, 106 transitions, 742 flow. Second operand 7 states and 173 transitions. [2024-06-27 18:33:49,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 150 transitions, 1246 flow [2024-06-27 18:33:50,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 150 transitions, 1210 flow, removed 17 selfloop flow, removed 1 redundant places. [2024-06-27 18:33:50,022 INFO L231 Difference]: Finished difference. Result has 93 places, 112 transitions, 852 flow [2024-06-27 18:33:50,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=852, PETRI_PLACES=93, PETRI_TRANSITIONS=112} [2024-06-27 18:33:50,023 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 39 predicate places. [2024-06-27 18:33:50,023 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 112 transitions, 852 flow [2024-06-27 18:33:50,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:50,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:50,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:50,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:33:50,024 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 18:33:50,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:50,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1567564689, now seen corresponding path program 2 times [2024-06-27 18:33:50,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:50,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982223361] [2024-06-27 18:33:50,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:50,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:50,680 INFO 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 18:33:50,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:50,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982223361] [2024-06-27 18:33:50,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982223361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:50,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:50,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:33:50,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530814072] [2024-06-27 18:33:50,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:50,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:33:50,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:50,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:33:50,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:33:50,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:33:50,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 112 transitions, 852 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:50,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:50,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:33:50,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:51,644 INFO L124 PetriNetUnfolderBase]: 4844/7866 cut-off events. [2024-06-27 18:33:51,644 INFO L125 PetriNetUnfolderBase]: For 45083/45083 co-relation queries the response was YES. [2024-06-27 18:33:51,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30372 conditions, 7866 events. 4844/7866 cut-off events. For 45083/45083 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 49981 event pairs, 1817 based on Foata normal form. 6/7678 useless extension candidates. Maximal degree in co-relation 30334. Up to 6661 conditions per place. [2024-06-27 18:33:51,689 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 125 selfloop transitions, 27 changer transitions 0/161 dead transitions. [2024-06-27 18:33:51,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 161 transitions, 1468 flow [2024-06-27 18:33:51,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:33:51,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:33:51,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 18:33:51,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 18:33:51,691 INFO L175 Difference]: Start difference. First operand has 93 places, 112 transitions, 852 flow. Second operand 7 states and 175 transitions. [2024-06-27 18:33:51,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 161 transitions, 1468 flow [2024-06-27 18:33:51,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 161 transitions, 1414 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 18:33:51,718 INFO L231 Difference]: Finished difference. Result has 99 places, 121 transitions, 978 flow [2024-06-27 18:33:51,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=978, PETRI_PLACES=99, PETRI_TRANSITIONS=121} [2024-06-27 18:33:51,718 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 45 predicate places. [2024-06-27 18:33:51,718 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 121 transitions, 978 flow [2024-06-27 18:33:51,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:51,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:51,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:51,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:33:51,719 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 18:33:51,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:51,720 INFO L85 PathProgramCache]: Analyzing trace with hash 847848269, now seen corresponding path program 3 times [2024-06-27 18:33:51,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:51,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326998958] [2024-06-27 18:33:51,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:51,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:52,353 INFO 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 18:33:52,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:52,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326998958] [2024-06-27 18:33:52,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326998958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:52,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:52,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:33:52,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678483068] [2024-06-27 18:33:52,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:52,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:33:52,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:52,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:33:52,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:33:52,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:33:52,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 121 transitions, 978 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:52,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:52,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:33:52,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:53,380 INFO L124 PetriNetUnfolderBase]: 4872/7920 cut-off events. [2024-06-27 18:33:53,380 INFO L125 PetriNetUnfolderBase]: For 51902/51902 co-relation queries the response was YES. [2024-06-27 18:33:53,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31639 conditions, 7920 events. 4872/7920 cut-off events. For 51902/51902 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 50471 event pairs, 1827 based on Foata normal form. 6/7728 useless extension candidates. Maximal degree in co-relation 31597. Up to 6828 conditions per place. [2024-06-27 18:33:53,439 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 126 selfloop transitions, 26 changer transitions 0/161 dead transitions. [2024-06-27 18:33:53,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 161 transitions, 1494 flow [2024-06-27 18:33:53,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:33:53,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:33:53,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 18:33:53,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-06-27 18:33:53,441 INFO L175 Difference]: Start difference. First operand has 99 places, 121 transitions, 978 flow. Second operand 7 states and 170 transitions. [2024-06-27 18:33:53,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 161 transitions, 1494 flow [2024-06-27 18:33:53,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 161 transitions, 1446 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-27 18:33:53,477 INFO L231 Difference]: Finished difference. Result has 106 places, 129 transitions, 1103 flow [2024-06-27 18:33:53,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1103, PETRI_PLACES=106, PETRI_TRANSITIONS=129} [2024-06-27 18:33:53,478 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 52 predicate places. [2024-06-27 18:33:53,478 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 129 transitions, 1103 flow [2024-06-27 18:33:53,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:53,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:53,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:53,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:33:53,479 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 18:33:53,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:53,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1702294111, now seen corresponding path program 3 times [2024-06-27 18:33:53,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:53,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144068640] [2024-06-27 18:33:53,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:53,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:54,237 INFO 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 18:33:54,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:54,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144068640] [2024-06-27 18:33:54,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144068640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:54,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:54,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:33:54,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818336679] [2024-06-27 18:33:54,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:54,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:33:54,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:54,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:33:54,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:33:54,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:33:54,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 129 transitions, 1103 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:54,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:54,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:33:54,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:55,514 INFO L124 PetriNetUnfolderBase]: 4867/7910 cut-off events. [2024-06-27 18:33:55,515 INFO L125 PetriNetUnfolderBase]: For 55913/55913 co-relation queries the response was YES. [2024-06-27 18:33:55,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32265 conditions, 7910 events. 4867/7910 cut-off events. For 55913/55913 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 50361 event pairs, 1825 based on Foata normal form. 2/7714 useless extension candidates. Maximal degree in co-relation 32219. Up to 6893 conditions per place. [2024-06-27 18:33:55,575 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 135 selfloop transitions, 16 changer transitions 0/160 dead transitions. [2024-06-27 18:33:55,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 160 transitions, 1489 flow [2024-06-27 18:33:55,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:33:55,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:33:55,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 18:33:55,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2024-06-27 18:33:55,577 INFO L175 Difference]: Start difference. First operand has 106 places, 129 transitions, 1103 flow. Second operand 7 states and 163 transitions. [2024-06-27 18:33:55,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 160 transitions, 1489 flow [2024-06-27 18:33:55,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 160 transitions, 1402 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-27 18:33:55,621 INFO L231 Difference]: Finished difference. Result has 109 places, 129 transitions, 1056 flow [2024-06-27 18:33:55,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1056, PETRI_PLACES=109, PETRI_TRANSITIONS=129} [2024-06-27 18:33:55,622 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 55 predicate places. [2024-06-27 18:33:55,622 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 129 transitions, 1056 flow [2024-06-27 18:33:55,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:55,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:55,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:55,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:33:55,623 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 18:33:55,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:55,624 INFO L85 PathProgramCache]: Analyzing trace with hash 847858158, now seen corresponding path program 1 times [2024-06-27 18:33:55,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:55,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169169703] [2024-06-27 18:33:55,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:55,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:56,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:33:56,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:56,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169169703] [2024-06-27 18:33:56,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169169703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:56,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:56,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:33:56,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098062438] [2024-06-27 18:33:56,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:56,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:33:56,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:56,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:33:56,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:33:56,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:33:56,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 129 transitions, 1056 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 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 18:33:56,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:56,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:33:56,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:57,565 INFO L124 PetriNetUnfolderBase]: 4890/7961 cut-off events. [2024-06-27 18:33:57,565 INFO L125 PetriNetUnfolderBase]: For 58416/58416 co-relation queries the response was YES. [2024-06-27 18:33:57,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32318 conditions, 7961 events. 4890/7961 cut-off events. For 58416/58416 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 50893 event pairs, 1757 based on Foata normal form. 6/7763 useless extension candidates. Maximal degree in co-relation 32271. Up to 6774 conditions per place. [2024-06-27 18:33:57,614 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 129 selfloop transitions, 33 changer transitions 0/171 dead transitions. [2024-06-27 18:33:57,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 171 transitions, 1586 flow [2024-06-27 18:33:57,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:33:57,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:33:57,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 18:33:57,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-27 18:33:57,617 INFO L175 Difference]: Start difference. First operand has 109 places, 129 transitions, 1056 flow. Second operand 7 states and 174 transitions. [2024-06-27 18:33:57,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 171 transitions, 1586 flow [2024-06-27 18:33:57,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 171 transitions, 1538 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 18:33:57,653 INFO L231 Difference]: Finished difference. Result has 110 places, 132 transitions, 1128 flow [2024-06-27 18:33:57,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1008, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1128, PETRI_PLACES=110, PETRI_TRANSITIONS=132} [2024-06-27 18:33:57,654 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 56 predicate places. [2024-06-27 18:33:57,654 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 132 transitions, 1128 flow [2024-06-27 18:33:57,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 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 18:33:57,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:57,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:57,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:33:57,655 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 18:33:57,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:57,655 INFO L85 PathProgramCache]: Analyzing trace with hash -108787098, now seen corresponding path program 1 times [2024-06-27 18:33:57,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:57,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999334886] [2024-06-27 18:33:57,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:57,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:57,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:58,109 INFO 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 18:33:58,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:58,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999334886] [2024-06-27 18:33:58,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999334886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:58,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:58,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:33:58,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485528677] [2024-06-27 18:33:58,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:58,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:33:58,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:58,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:33:58,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:33:58,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:33:58,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 132 transitions, 1128 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 18:33:58,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:58,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:33:58,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:59,097 INFO L124 PetriNetUnfolderBase]: 4573/7619 cut-off events. [2024-06-27 18:33:59,097 INFO L125 PetriNetUnfolderBase]: For 63224/63226 co-relation queries the response was YES. [2024-06-27 18:33:59,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31735 conditions, 7619 events. 4573/7619 cut-off events. For 63224/63226 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 50096 event pairs, 1817 based on Foata normal form. 3/7424 useless extension candidates. Maximal degree in co-relation 31687. Up to 6472 conditions per place. [2024-06-27 18:33:59,139 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 113 selfloop transitions, 14 changer transitions 0/146 dead transitions. [2024-06-27 18:33:59,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 146 transitions, 1414 flow [2024-06-27 18:33:59,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:33:59,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:33:59,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-27 18:33:59,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2024-06-27 18:33:59,140 INFO L175 Difference]: Start difference. First operand has 110 places, 132 transitions, 1128 flow. Second operand 5 states and 119 transitions. [2024-06-27 18:33:59,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 146 transitions, 1414 flow [2024-06-27 18:33:59,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 146 transitions, 1302 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-27 18:33:59,175 INFO L231 Difference]: Finished difference. Result has 110 places, 132 transitions, 1054 flow [2024-06-27 18:33:59,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1054, PETRI_PLACES=110, PETRI_TRANSITIONS=132} [2024-06-27 18:33:59,176 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 56 predicate places. [2024-06-27 18:33:59,176 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 132 transitions, 1054 flow [2024-06-27 18:33:59,176 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 18:33:59,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:59,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:59,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:33:59,177 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 18:33:59,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:59,177 INFO L85 PathProgramCache]: Analyzing trace with hash 141913509, now seen corresponding path program 1 times [2024-06-27 18:33:59,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:59,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955656255] [2024-06-27 18:33:59,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:59,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:00,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:00,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:00,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955656255] [2024-06-27 18:34:00,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955656255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:00,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:00,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:34:00,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226270063] [2024-06-27 18:34:00,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:00,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:34:00,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:00,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:34:00,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:34:00,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:34:00,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 132 transitions, 1054 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 18:34:00,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:00,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:34:00,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:01,555 INFO L124 PetriNetUnfolderBase]: 4910/7894 cut-off events. [2024-06-27 18:34:01,556 INFO L125 PetriNetUnfolderBase]: For 66372/66372 co-relation queries the response was YES. [2024-06-27 18:34:01,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33225 conditions, 7894 events. 4910/7894 cut-off events. For 66372/66372 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 49465 event pairs, 1561 based on Foata normal form. 2/7687 useless extension candidates. Maximal degree in co-relation 33176. Up to 6889 conditions per place. [2024-06-27 18:34:01,605 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 163 selfloop transitions, 21 changer transitions 0/193 dead transitions. [2024-06-27 18:34:01,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 193 transitions, 1636 flow [2024-06-27 18:34:01,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:34:01,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:34:01,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-27 18:34:01,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-06-27 18:34:01,607 INFO L175 Difference]: Start difference. First operand has 110 places, 132 transitions, 1054 flow. Second operand 9 states and 219 transitions. [2024-06-27 18:34:01,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 193 transitions, 1636 flow [2024-06-27 18:34:01,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 193 transitions, 1597 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:34:01,646 INFO L231 Difference]: Finished difference. Result has 115 places, 135 transitions, 1120 flow [2024-06-27 18:34:01,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1015, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1120, PETRI_PLACES=115, PETRI_TRANSITIONS=135} [2024-06-27 18:34:01,646 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 61 predicate places. [2024-06-27 18:34:01,646 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 135 transitions, 1120 flow [2024-06-27 18:34:01,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 18:34:01,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:01,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:01,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:34:01,647 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 18:34:01,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:01,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1004359790, now seen corresponding path program 1 times [2024-06-27 18:34:01,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:01,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875370368] [2024-06-27 18:34:01,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:01,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:02,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:02,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:02,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875370368] [2024-06-27 18:34:02,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875370368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:02,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:02,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:34:02,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820080680] [2024-06-27 18:34:02,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:02,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:34:02,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:02,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:34:02,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:34:02,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:34:02,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 135 transitions, 1120 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 18:34:02,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:02,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:34:02,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:03,740 INFO L124 PetriNetUnfolderBase]: 5059/8085 cut-off events. [2024-06-27 18:34:03,740 INFO L125 PetriNetUnfolderBase]: For 76731/76731 co-relation queries the response was YES. [2024-06-27 18:34:03,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35420 conditions, 8085 events. 5059/8085 cut-off events. For 76731/76731 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 50495 event pairs, 1545 based on Foata normal form. 6/7875 useless extension candidates. Maximal degree in co-relation 35371. Up to 6992 conditions per place. [2024-06-27 18:34:03,795 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 160 selfloop transitions, 29 changer transitions 0/198 dead transitions. [2024-06-27 18:34:03,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 198 transitions, 1870 flow [2024-06-27 18:34:03,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:34:03,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:34:03,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-27 18:34:03,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-27 18:34:03,797 INFO L175 Difference]: Start difference. First operand has 115 places, 135 transitions, 1120 flow. Second operand 8 states and 204 transitions. [2024-06-27 18:34:03,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 198 transitions, 1870 flow [2024-06-27 18:34:03,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 198 transitions, 1791 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 18:34:03,854 INFO L231 Difference]: Finished difference. Result has 118 places, 146 transitions, 1259 flow [2024-06-27 18:34:03,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1259, PETRI_PLACES=118, PETRI_TRANSITIONS=146} [2024-06-27 18:34:03,854 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 64 predicate places. [2024-06-27 18:34:03,854 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 146 transitions, 1259 flow [2024-06-27 18:34:03,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 18:34:03,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:03,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:03,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:34:03,855 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 18:34:03,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:03,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1710177234, now seen corresponding path program 2 times [2024-06-27 18:34:03,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:03,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035837504] [2024-06-27 18:34:03,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:03,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:04,702 INFO 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 18:34:04,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:04,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035837504] [2024-06-27 18:34:04,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035837504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:04,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:04,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:34:04,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770564929] [2024-06-27 18:34:04,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:04,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:34:04,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:04,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:34:04,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:34:04,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:34:04,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 146 transitions, 1259 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 18:34:04,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:04,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:34:04,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:05,846 INFO L124 PetriNetUnfolderBase]: 5362/8479 cut-off events. [2024-06-27 18:34:05,846 INFO L125 PetriNetUnfolderBase]: For 96696/96708 co-relation queries the response was YES. [2024-06-27 18:34:05,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39942 conditions, 8479 events. 5362/8479 cut-off events. For 96696/96708 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 52468 event pairs, 1505 based on Foata normal form. 9/8282 useless extension candidates. Maximal degree in co-relation 39890. Up to 6608 conditions per place. [2024-06-27 18:34:05,914 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 141 selfloop transitions, 67 changer transitions 0/217 dead transitions. [2024-06-27 18:34:05,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 217 transitions, 2289 flow [2024-06-27 18:34:05,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:34:05,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:34:05,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-27 18:34:05,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2024-06-27 18:34:05,927 INFO L175 Difference]: Start difference. First operand has 118 places, 146 transitions, 1259 flow. Second operand 8 states and 213 transitions. [2024-06-27 18:34:05,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 217 transitions, 2289 flow [2024-06-27 18:34:05,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 217 transitions, 2164 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-27 18:34:06,003 INFO L231 Difference]: Finished difference. Result has 124 places, 161 transitions, 1527 flow [2024-06-27 18:34:06,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1527, PETRI_PLACES=124, PETRI_TRANSITIONS=161} [2024-06-27 18:34:06,004 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 70 predicate places. [2024-06-27 18:34:06,004 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 161 transitions, 1527 flow [2024-06-27 18:34:06,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 18:34:06,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:06,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:06,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:34:06,005 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 18:34:06,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:06,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1710182969, now seen corresponding path program 2 times [2024-06-27 18:34:06,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:06,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157060636] [2024-06-27 18:34:06,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:06,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:07,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:07,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:07,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157060636] [2024-06-27 18:34:07,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157060636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:07,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:07,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:34:07,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814387187] [2024-06-27 18:34:07,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:07,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:34:07,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:07,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:34:07,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:34:07,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:34:07,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 161 transitions, 1527 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 18:34:07,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:07,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:34:07,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:08,361 INFO L124 PetriNetUnfolderBase]: 5400/8143 cut-off events. [2024-06-27 18:34:08,361 INFO L125 PetriNetUnfolderBase]: For 112338/112350 co-relation queries the response was YES. [2024-06-27 18:34:08,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42324 conditions, 8143 events. 5400/8143 cut-off events. For 112338/112350 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 47173 event pairs, 1400 based on Foata normal form. 10/8084 useless extension candidates. Maximal degree in co-relation 42269. Up to 7486 conditions per place. [2024-06-27 18:34:08,433 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 167 selfloop transitions, 45 changer transitions 0/221 dead transitions. [2024-06-27 18:34:08,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 221 transitions, 2381 flow [2024-06-27 18:34:08,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:34:08,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:34:08,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 18:34:08,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078125 [2024-06-27 18:34:08,435 INFO L175 Difference]: Start difference. First operand has 124 places, 161 transitions, 1527 flow. Second operand 8 states and 195 transitions. [2024-06-27 18:34:08,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 221 transitions, 2381 flow [2024-06-27 18:34:08,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 221 transitions, 2257 flow, removed 53 selfloop flow, removed 2 redundant places. [2024-06-27 18:34:08,560 INFO L231 Difference]: Finished difference. Result has 132 places, 175 transitions, 1841 flow [2024-06-27 18:34:08,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1425, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1841, PETRI_PLACES=132, PETRI_TRANSITIONS=175} [2024-06-27 18:34:08,561 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 78 predicate places. [2024-06-27 18:34:08,561 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 175 transitions, 1841 flow [2024-06-27 18:34:08,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 18:34:08,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:08,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:08,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:34:08,561 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 18:34:08,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:08,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1004503940, now seen corresponding path program 3 times [2024-06-27 18:34:08,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:08,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487610257] [2024-06-27 18:34:08,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:08,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:09,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:09,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:09,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487610257] [2024-06-27 18:34:09,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487610257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:09,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:09,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:34:09,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165003950] [2024-06-27 18:34:09,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:09,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:34:09,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:09,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:34:09,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:34:09,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:34:09,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 175 transitions, 1841 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 18:34:09,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:09,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:34:09,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:10,623 INFO L124 PetriNetUnfolderBase]: 5388/8519 cut-off events. [2024-06-27 18:34:10,623 INFO L125 PetriNetUnfolderBase]: For 117175/117187 co-relation queries the response was YES. [2024-06-27 18:34:10,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42823 conditions, 8519 events. 5388/8519 cut-off events. For 117175/117187 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 52710 event pairs, 1520 based on Foata normal form. 9/8321 useless extension candidates. Maximal degree in co-relation 42764. Up to 6655 conditions per place. [2024-06-27 18:34:10,732 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 159 selfloop transitions, 62 changer transitions 0/230 dead transitions. [2024-06-27 18:34:10,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 230 transitions, 2691 flow [2024-06-27 18:34:10,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:34:10,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:34:10,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-27 18:34:10,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2024-06-27 18:34:10,734 INFO L175 Difference]: Start difference. First operand has 132 places, 175 transitions, 1841 flow. Second operand 8 states and 212 transitions. [2024-06-27 18:34:10,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 230 transitions, 2691 flow [2024-06-27 18:34:10,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 230 transitions, 2462 flow, removed 108 selfloop flow, removed 2 redundant places. [2024-06-27 18:34:10,951 INFO L231 Difference]: Finished difference. Result has 138 places, 175 transitions, 1746 flow [2024-06-27 18:34:10,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1612, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1746, PETRI_PLACES=138, PETRI_TRANSITIONS=175} [2024-06-27 18:34:10,952 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 84 predicate places. [2024-06-27 18:34:10,952 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 175 transitions, 1746 flow [2024-06-27 18:34:10,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 18:34:10,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:10,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:10,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:34:10,954 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 18:34:10,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:10,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1341322481, now seen corresponding path program 1 times [2024-06-27 18:34:10,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:10,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556722186] [2024-06-27 18:34:10,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:10,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:12,001 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 18:34:12,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:12,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556722186] [2024-06-27 18:34:12,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556722186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:12,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:12,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:34:12,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085316543] [2024-06-27 18:34:12,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:12,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:34:12,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:12,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:34:12,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:34:12,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:34:12,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 175 transitions, 1746 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 18:34:12,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:12,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:34:12,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:13,369 INFO L124 PetriNetUnfolderBase]: 5417/8481 cut-off events. [2024-06-27 18:34:13,369 INFO L125 PetriNetUnfolderBase]: For 120836/120836 co-relation queries the response was YES. [2024-06-27 18:34:13,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43387 conditions, 8481 events. 5417/8481 cut-off events. For 120836/120836 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 52511 event pairs, 1785 based on Foata normal form. 3/8341 useless extension candidates. Maximal degree in co-relation 43326. Up to 7466 conditions per place. [2024-06-27 18:34:13,440 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 170 selfloop transitions, 38 changer transitions 0/217 dead transitions. [2024-06-27 18:34:13,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 217 transitions, 2378 flow [2024-06-27 18:34:13,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:34:13,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:34:13,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 18:34:13,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-27 18:34:13,442 INFO L175 Difference]: Start difference. First operand has 138 places, 175 transitions, 1746 flow. Second operand 7 states and 174 transitions. [2024-06-27 18:34:13,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 217 transitions, 2378 flow [2024-06-27 18:34:13,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 217 transitions, 2207 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 18:34:13,533 INFO L231 Difference]: Finished difference. Result has 137 places, 179 transitions, 1737 flow [2024-06-27 18:34:13,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1575, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1737, PETRI_PLACES=137, PETRI_TRANSITIONS=179} [2024-06-27 18:34:13,534 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 83 predicate places. [2024-06-27 18:34:13,534 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 179 transitions, 1737 flow [2024-06-27 18:34:13,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 18:34:13,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:13,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:13,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:34:13,534 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 18:34:13,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:13,535 INFO L85 PathProgramCache]: Analyzing trace with hash 513493848, now seen corresponding path program 4 times [2024-06-27 18:34:13,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:13,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304089883] [2024-06-27 18:34:13,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:13,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:14,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:14,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:14,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304089883] [2024-06-27 18:34:14,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304089883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:14,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:14,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:34:14,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175162944] [2024-06-27 18:34:14,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:14,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:34:14,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:14,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:34:14,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:34:14,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:34:14,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 179 transitions, 1737 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 18:34:14,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:14,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:34:14,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:15,930 INFO L124 PetriNetUnfolderBase]: 5501/8592 cut-off events. [2024-06-27 18:34:15,931 INFO L125 PetriNetUnfolderBase]: For 130734/130734 co-relation queries the response was YES. [2024-06-27 18:34:15,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44666 conditions, 8592 events. 5501/8592 cut-off events. For 130734/130734 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 53033 event pairs, 1810 based on Foata normal form. 6/8458 useless extension candidates. Maximal degree in co-relation 44606. Up to 7623 conditions per place. [2024-06-27 18:34:15,996 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 184 selfloop transitions, 30 changer transitions 0/223 dead transitions. [2024-06-27 18:34:15,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 223 transitions, 2387 flow [2024-06-27 18:34:15,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:34:15,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:34:15,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 18:34:15,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-06-27 18:34:15,998 INFO L175 Difference]: Start difference. First operand has 137 places, 179 transitions, 1737 flow. Second operand 8 states and 194 transitions. [2024-06-27 18:34:15,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 223 transitions, 2387 flow [2024-06-27 18:34:16,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 223 transitions, 2277 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 18:34:16,092 INFO L231 Difference]: Finished difference. Result has 140 places, 183 transitions, 1774 flow [2024-06-27 18:34:16,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1627, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1774, PETRI_PLACES=140, PETRI_TRANSITIONS=183} [2024-06-27 18:34:16,093 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 86 predicate places. [2024-06-27 18:34:16,093 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 183 transitions, 1774 flow [2024-06-27 18:34:16,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 18:34:16,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:16,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:16,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:34:16,094 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 18:34:16,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:16,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1231511360, now seen corresponding path program 5 times [2024-06-27 18:34:16,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:16,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020689399] [2024-06-27 18:34:16,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:16,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:16,819 INFO 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 18:34:16,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:16,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020689399] [2024-06-27 18:34:16,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020689399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:16,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:16,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:34:16,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18927167] [2024-06-27 18:34:16,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:16,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:34:16,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:16,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:34:16,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:34:16,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:34:16,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 183 transitions, 1774 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 18:34:16,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:16,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:34:16,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:18,050 INFO L124 PetriNetUnfolderBase]: 5585/8710 cut-off events. [2024-06-27 18:34:18,051 INFO L125 PetriNetUnfolderBase]: For 141233/141233 co-relation queries the response was YES. [2024-06-27 18:34:18,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45860 conditions, 8710 events. 5585/8710 cut-off events. For 141233/141233 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 53727 event pairs, 1806 based on Foata normal form. 6/8574 useless extension candidates. Maximal degree in co-relation 45799. Up to 7373 conditions per place. [2024-06-27 18:34:18,139 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 184 selfloop transitions, 42 changer transitions 0/235 dead transitions. [2024-06-27 18:34:18,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 235 transitions, 2676 flow [2024-06-27 18:34:18,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:34:18,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:34:18,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-27 18:34:18,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-06-27 18:34:18,142 INFO L175 Difference]: Start difference. First operand has 140 places, 183 transitions, 1774 flow. Second operand 8 states and 201 transitions. [2024-06-27 18:34:18,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 235 transitions, 2676 flow [2024-06-27 18:34:18,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 235 transitions, 2565 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 18:34:18,274 INFO L231 Difference]: Finished difference. Result has 143 places, 188 transitions, 1873 flow [2024-06-27 18:34:18,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1663, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1873, PETRI_PLACES=143, PETRI_TRANSITIONS=188} [2024-06-27 18:34:18,275 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 89 predicate places. [2024-06-27 18:34:18,275 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 188 transitions, 1873 flow [2024-06-27 18:34:18,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 18:34:18,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:18,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:18,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:34:18,276 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 18:34:18,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:18,276 INFO L85 PathProgramCache]: Analyzing trace with hash 505242733, now seen corresponding path program 3 times [2024-06-27 18:34:18,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:18,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438584071] [2024-06-27 18:34:18,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:18,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:19,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:19,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:19,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438584071] [2024-06-27 18:34:19,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438584071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:19,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:19,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:34:19,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528851168] [2024-06-27 18:34:19,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:19,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:34:19,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:19,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:34:19,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:34:19,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:34:19,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 188 transitions, 1873 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 18:34:19,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:19,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:34:19,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:20,431 INFO L124 PetriNetUnfolderBase]: 5585/8703 cut-off events. [2024-06-27 18:34:20,431 INFO L125 PetriNetUnfolderBase]: For 151174/151174 co-relation queries the response was YES. [2024-06-27 18:34:20,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46639 conditions, 8703 events. 5585/8703 cut-off events. For 151174/151174 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 53613 event pairs, 1855 based on Foata normal form. 2/8567 useless extension candidates. Maximal degree in co-relation 46576. Up to 7866 conditions per place. [2024-06-27 18:34:20,514 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 202 selfloop transitions, 19 changer transitions 0/230 dead transitions. [2024-06-27 18:34:20,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 230 transitions, 2497 flow [2024-06-27 18:34:20,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:34:20,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:34:20,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 18:34:20,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2024-06-27 18:34:20,516 INFO L175 Difference]: Start difference. First operand has 143 places, 188 transitions, 1873 flow. Second operand 8 states and 186 transitions. [2024-06-27 18:34:20,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 230 transitions, 2497 flow [2024-06-27 18:34:20,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 230 transitions, 2305 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-27 18:34:20,669 INFO L231 Difference]: Finished difference. Result has 144 places, 191 transitions, 1807 flow [2024-06-27 18:34:20,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1681, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1807, PETRI_PLACES=144, PETRI_TRANSITIONS=191} [2024-06-27 18:34:20,670 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 90 predicate places. [2024-06-27 18:34:20,670 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 191 transitions, 1807 flow [2024-06-27 18:34:20,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 18:34:20,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:20,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:20,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:34:20,671 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 18:34:20,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:20,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1433550986, now seen corresponding path program 6 times [2024-06-27 18:34:20,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:20,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384236407] [2024-06-27 18:34:20,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:20,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:21,404 INFO 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 18:34:21,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:21,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384236407] [2024-06-27 18:34:21,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384236407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:21,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:21,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:34:21,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566349106] [2024-06-27 18:34:21,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:21,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:34:21,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:21,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:34:21,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:34:21,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:34:21,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 191 transitions, 1807 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 18:34:21,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:21,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:34:21,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:22,790 INFO L124 PetriNetUnfolderBase]: 5613/8734 cut-off events. [2024-06-27 18:34:22,790 INFO L125 PetriNetUnfolderBase]: For 158093/158093 co-relation queries the response was YES. [2024-06-27 18:34:22,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46558 conditions, 8734 events. 5613/8734 cut-off events. For 158093/158093 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 53711 event pairs, 1821 based on Foata normal form. 6/8604 useless extension candidates. Maximal degree in co-relation 46495. Up to 7402 conditions per place. [2024-06-27 18:34:22,879 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 184 selfloop transitions, 46 changer transitions 0/239 dead transitions. [2024-06-27 18:34:22,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 239 transitions, 2566 flow [2024-06-27 18:34:22,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:34:22,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:34:22,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-27 18:34:22,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 18:34:22,881 INFO L175 Difference]: Start difference. First operand has 144 places, 191 transitions, 1807 flow. Second operand 8 states and 200 transitions. [2024-06-27 18:34:22,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 239 transitions, 2566 flow [2024-06-27 18:34:23,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 239 transitions, 2464 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-27 18:34:23,030 INFO L231 Difference]: Finished difference. Result has 146 places, 195 transitions, 1883 flow [2024-06-27 18:34:23,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1705, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1883, PETRI_PLACES=146, PETRI_TRANSITIONS=195} [2024-06-27 18:34:23,030 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 92 predicate places. [2024-06-27 18:34:23,031 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 195 transitions, 1883 flow [2024-06-27 18:34:23,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 18:34:23,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:23,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:23,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:34:23,031 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:34:23,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:23,032 INFO L85 PathProgramCache]: Analyzing trace with hash 922568345, now seen corresponding path program 1 times [2024-06-27 18:34:23,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:23,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003520684] [2024-06-27 18:34:23,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:23,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:23,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:23,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:23,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003520684] [2024-06-27 18:34:23,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003520684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:23,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:23,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:34:23,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567974971] [2024-06-27 18:34:23,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:23,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:34:23,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:23,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:34:23,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:34:23,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:34:23,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 195 transitions, 1883 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 18:34:23,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:23,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:34:23,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:24,848 INFO L124 PetriNetUnfolderBase]: 5826/8942 cut-off events. [2024-06-27 18:34:24,848 INFO L125 PetriNetUnfolderBase]: For 183878/183964 co-relation queries the response was YES. [2024-06-27 18:34:24,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48875 conditions, 8942 events. 5826/8942 cut-off events. For 183878/183964 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 54516 event pairs, 2042 based on Foata normal form. 43/8773 useless extension candidates. Maximal degree in co-relation 48811. Up to 8152 conditions per place. [2024-06-27 18:34:24,921 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 180 selfloop transitions, 17 changer transitions 0/217 dead transitions. [2024-06-27 18:34:24,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 217 transitions, 2355 flow [2024-06-27 18:34:24,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:34:24,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:34:24,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-27 18:34:24,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-27 18:34:24,923 INFO L175 Difference]: Start difference. First operand has 146 places, 195 transitions, 1883 flow. Second operand 6 states and 135 transitions. [2024-06-27 18:34:24,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 217 transitions, 2355 flow [2024-06-27 18:34:25,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 217 transitions, 2231 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-27 18:34:25,047 INFO L231 Difference]: Finished difference. Result has 147 places, 198 transitions, 1836 flow [2024-06-27 18:34:25,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1759, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1836, PETRI_PLACES=147, PETRI_TRANSITIONS=198} [2024-06-27 18:34:25,048 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 93 predicate places. [2024-06-27 18:34:25,048 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 198 transitions, 1836 flow [2024-06-27 18:34:25,048 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 18:34:25,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:25,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:25,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:34:25,049 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 18:34:25,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:25,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1774371308, now seen corresponding path program 1 times [2024-06-27 18:34:25,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:25,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730682512] [2024-06-27 18:34:25,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:25,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:26,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:26,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:26,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730682512] [2024-06-27 18:34:26,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730682512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:26,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:26,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:34:26,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22354643] [2024-06-27 18:34:26,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:26,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:34:26,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:26,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:34:26,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:34:26,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:34:26,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 198 transitions, 1836 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:26,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:26,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:34:26,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:27,877 INFO L124 PetriNetUnfolderBase]: 5855/9061 cut-off events. [2024-06-27 18:34:27,878 INFO L125 PetriNetUnfolderBase]: For 197611/197611 co-relation queries the response was YES. [2024-06-27 18:34:27,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50874 conditions, 9061 events. 5855/9061 cut-off events. For 197611/197611 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 55818 event pairs, 1277 based on Foata normal form. 4/8889 useless extension candidates. Maximal degree in co-relation 50809. Up to 8030 conditions per place. [2024-06-27 18:34:27,975 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 236 selfloop transitions, 26 changer transitions 0/272 dead transitions. [2024-06-27 18:34:27,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 272 transitions, 2806 flow [2024-06-27 18:34:27,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:34:27,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:34:27,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 246 transitions. [2024-06-27 18:34:27,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-27 18:34:27,976 INFO L175 Difference]: Start difference. First operand has 147 places, 198 transitions, 1836 flow. Second operand 10 states and 246 transitions. [2024-06-27 18:34:27,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 272 transitions, 2806 flow [2024-06-27 18:34:28,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 272 transitions, 2751 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-27 18:34:28,145 INFO L231 Difference]: Finished difference. Result has 153 places, 202 transitions, 1988 flow [2024-06-27 18:34:28,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1781, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1988, PETRI_PLACES=153, PETRI_TRANSITIONS=202} [2024-06-27 18:34:28,146 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 99 predicate places. [2024-06-27 18:34:28,146 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 202 transitions, 1988 flow [2024-06-27 18:34:28,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:28,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:28,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:28,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:34:28,147 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 18:34:28,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:28,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1070263640, now seen corresponding path program 2 times [2024-06-27 18:34:28,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:28,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407154493] [2024-06-27 18:34:28,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:28,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:29,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:29,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:29,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407154493] [2024-06-27 18:34:29,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407154493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:29,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:29,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:34:29,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594363313] [2024-06-27 18:34:29,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:29,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:34:29,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:29,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:34:29,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:34:29,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:34:29,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 202 transitions, 1988 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:29,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:29,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:34:29,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:30,802 INFO L124 PetriNetUnfolderBase]: 5913/8905 cut-off events. [2024-06-27 18:34:30,803 INFO L125 PetriNetUnfolderBase]: For 216662/216662 co-relation queries the response was YES. [2024-06-27 18:34:30,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52405 conditions, 8905 events. 5913/8905 cut-off events. For 216662/216662 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 52356 event pairs, 1368 based on Foata normal form. 4/8821 useless extension candidates. Maximal degree in co-relation 52339. Up to 8173 conditions per place. [2024-06-27 18:34:30,871 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 235 selfloop transitions, 46 changer transitions 0/291 dead transitions. [2024-06-27 18:34:30,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 291 transitions, 3185 flow [2024-06-27 18:34:30,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:34:30,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:34:30,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 244 transitions. [2024-06-27 18:34:30,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-06-27 18:34:30,873 INFO L175 Difference]: Start difference. First operand has 153 places, 202 transitions, 1988 flow. Second operand 10 states and 244 transitions. [2024-06-27 18:34:30,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 291 transitions, 3185 flow [2024-06-27 18:34:31,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 291 transitions, 3044 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-27 18:34:31,066 INFO L231 Difference]: Finished difference. Result has 161 places, 223 transitions, 2450 flow [2024-06-27 18:34:31,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1872, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2450, PETRI_PLACES=161, PETRI_TRANSITIONS=223} [2024-06-27 18:34:31,066 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 107 predicate places. [2024-06-27 18:34:31,067 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 223 transitions, 2450 flow [2024-06-27 18:34:31,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:31,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:31,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:31,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:34:31,067 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:34:31,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:31,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1594150696, now seen corresponding path program 1 times [2024-06-27 18:34:31,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:31,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216738324] [2024-06-27 18:34:31,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:31,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:32,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:32,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:32,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216738324] [2024-06-27 18:34:32,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216738324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:32,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:32,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:34:32,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207800370] [2024-06-27 18:34:32,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:32,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:34:32,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:32,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:34:32,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:34:32,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:34:32,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 223 transitions, 2450 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:32,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:32,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:34:32,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:33,625 INFO L124 PetriNetUnfolderBase]: 6210/9277 cut-off events. [2024-06-27 18:34:33,625 INFO L125 PetriNetUnfolderBase]: For 245747/245747 co-relation queries the response was YES. [2024-06-27 18:34:33,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56708 conditions, 9277 events. 6210/9277 cut-off events. For 245747/245747 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 54361 event pairs, 1347 based on Foata normal form. 6/9176 useless extension candidates. Maximal degree in co-relation 56636. Up to 8137 conditions per place. [2024-06-27 18:34:33,728 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 251 selfloop transitions, 64 changer transitions 0/325 dead transitions. [2024-06-27 18:34:33,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 325 transitions, 4134 flow [2024-06-27 18:34:33,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:34:33,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:34:33,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 264 transitions. [2024-06-27 18:34:33,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-27 18:34:33,730 INFO L175 Difference]: Start difference. First operand has 161 places, 223 transitions, 2450 flow. Second operand 10 states and 264 transitions. [2024-06-27 18:34:33,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 325 transitions, 4134 flow [2024-06-27 18:34:34,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 325 transitions, 3845 flow, removed 140 selfloop flow, removed 2 redundant places. [2024-06-27 18:34:34,077 INFO L231 Difference]: Finished difference. Result has 171 places, 244 transitions, 2672 flow [2024-06-27 18:34:34,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2161, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2672, PETRI_PLACES=171, PETRI_TRANSITIONS=244} [2024-06-27 18:34:34,078 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 117 predicate places. [2024-06-27 18:34:34,078 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 244 transitions, 2672 flow [2024-06-27 18:34:34,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:34,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:34,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:34,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:34:34,079 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 18:34:34,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:34,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1591349536, now seen corresponding path program 2 times [2024-06-27 18:34:34,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:34,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599401590] [2024-06-27 18:34:34,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:34,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:35,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:35,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:35,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599401590] [2024-06-27 18:34:35,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599401590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:35,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:35,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:34:35,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934798139] [2024-06-27 18:34:35,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:35,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:34:35,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:35,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:34:35,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:34:35,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:34:35,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 244 transitions, 2672 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:35,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:35,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:34:35,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:36,749 INFO L124 PetriNetUnfolderBase]: 6316/9705 cut-off events. [2024-06-27 18:34:36,749 INFO L125 PetriNetUnfolderBase]: For 273442/273444 co-relation queries the response was YES. [2024-06-27 18:34:36,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60569 conditions, 9705 events. 6316/9705 cut-off events. For 273442/273444 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 59817 event pairs, 1603 based on Foata normal form. 6/9509 useless extension candidates. Maximal degree in co-relation 60493. Up to 8622 conditions per place. [2024-06-27 18:34:36,860 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 266 selfloop transitions, 33 changer transitions 0/309 dead transitions. [2024-06-27 18:34:36,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 309 transitions, 3720 flow [2024-06-27 18:34:36,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:34:36,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:34:36,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-27 18:34:36,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5300925925925926 [2024-06-27 18:34:36,862 INFO L175 Difference]: Start difference. First operand has 171 places, 244 transitions, 2672 flow. Second operand 9 states and 229 transitions. [2024-06-27 18:34:36,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 309 transitions, 3720 flow [2024-06-27 18:34:37,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 309 transitions, 3524 flow, removed 86 selfloop flow, removed 3 redundant places. [2024-06-27 18:34:37,216 INFO L231 Difference]: Finished difference. Result has 177 places, 248 transitions, 2653 flow [2024-06-27 18:34:37,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2488, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2653, PETRI_PLACES=177, PETRI_TRANSITIONS=248} [2024-06-27 18:34:37,218 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 123 predicate places. [2024-06-27 18:34:37,218 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 248 transitions, 2653 flow [2024-06-27 18:34:37,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:37,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:37,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:37,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:34:37,219 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 18:34:37,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:37,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1771514348, now seen corresponding path program 3 times [2024-06-27 18:34:37,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:37,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725083443] [2024-06-27 18:34:37,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:37,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:38,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:38,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:38,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725083443] [2024-06-27 18:34:38,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725083443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:38,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:38,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:34:38,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183560750] [2024-06-27 18:34:38,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:38,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:34:38,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:38,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:34:38,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:34:38,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:34:38,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 248 transitions, 2653 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:38,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:38,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:34:38,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:40,173 INFO L124 PetriNetUnfolderBase]: 6289/9652 cut-off events. [2024-06-27 18:34:40,173 INFO L125 PetriNetUnfolderBase]: For 269740/269742 co-relation queries the response was YES. [2024-06-27 18:34:40,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59059 conditions, 9652 events. 6289/9652 cut-off events. For 269740/269742 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 59396 event pairs, 1631 based on Foata normal form. 4/9473 useless extension candidates. Maximal degree in co-relation 58982. Up to 8757 conditions per place. [2024-06-27 18:34:40,294 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 274 selfloop transitions, 20 changer transitions 0/304 dead transitions. [2024-06-27 18:34:40,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 304 transitions, 3401 flow [2024-06-27 18:34:40,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:34:40,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:34:40,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-27 18:34:40,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:34:40,296 INFO L175 Difference]: Start difference. First operand has 177 places, 248 transitions, 2653 flow. Second operand 9 states and 216 transitions. [2024-06-27 18:34:40,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 304 transitions, 3401 flow [2024-06-27 18:34:40,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 304 transitions, 3228 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-27 18:34:40,625 INFO L231 Difference]: Finished difference. Result has 179 places, 248 transitions, 2527 flow [2024-06-27 18:34:40,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2480, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2527, PETRI_PLACES=179, PETRI_TRANSITIONS=248} [2024-06-27 18:34:40,626 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 125 predicate places. [2024-06-27 18:34:40,626 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 248 transitions, 2527 flow [2024-06-27 18:34:40,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:40,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:40,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:40,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:34:40,626 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 18:34:40,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:40,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1771514224, now seen corresponding path program 3 times [2024-06-27 18:34:40,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:40,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405551468] [2024-06-27 18:34:40,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:40,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:41,680 INFO 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 18:34:41,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:41,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405551468] [2024-06-27 18:34:41,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405551468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:41,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:41,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:34:41,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286529566] [2024-06-27 18:34:41,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:41,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:34:41,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:41,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:34:41,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:34:41,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:34:41,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 248 transitions, 2527 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:41,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:41,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:34:41,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:43,513 INFO L124 PetriNetUnfolderBase]: 6361/9754 cut-off events. [2024-06-27 18:34:43,513 INFO L125 PetriNetUnfolderBase]: For 272630/272632 co-relation queries the response was YES. [2024-06-27 18:34:43,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58955 conditions, 9754 events. 6361/9754 cut-off events. For 272630/272632 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 59999 event pairs, 1603 based on Foata normal form. 6/9562 useless extension candidates. Maximal degree in co-relation 58877. Up to 8532 conditions per place. [2024-06-27 18:34:43,624 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 274 selfloop transitions, 43 changer transitions 0/327 dead transitions. [2024-06-27 18:34:43,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 327 transitions, 3777 flow [2024-06-27 18:34:43,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:34:43,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:34:43,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 256 transitions. [2024-06-27 18:34:43,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-27 18:34:43,626 INFO L175 Difference]: Start difference. First operand has 179 places, 248 transitions, 2527 flow. Second operand 10 states and 256 transitions. [2024-06-27 18:34:43,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 327 transitions, 3777 flow [2024-06-27 18:34:43,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 327 transitions, 3738 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 18:34:43,907 INFO L231 Difference]: Finished difference. Result has 184 places, 256 transitions, 2763 flow [2024-06-27 18:34:43,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2488, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2763, PETRI_PLACES=184, PETRI_TRANSITIONS=256} [2024-06-27 18:34:43,908 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 130 predicate places. [2024-06-27 18:34:43,908 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 256 transitions, 2763 flow [2024-06-27 18:34:43,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:43,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:43,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:43,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:34:43,909 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 18:34:43,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:43,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1476063140, now seen corresponding path program 4 times [2024-06-27 18:34:43,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:43,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779372918] [2024-06-27 18:34:43,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:43,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:44,942 INFO 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 18:34:44,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:44,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779372918] [2024-06-27 18:34:44,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779372918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:44,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:44,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:34:44,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158105404] [2024-06-27 18:34:44,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:44,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:34:44,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:44,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:34:44,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:34:45,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:34:45,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 256 transitions, 2763 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:45,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:45,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:34:45,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:46,566 INFO L124 PetriNetUnfolderBase]: 6384/9765 cut-off events. [2024-06-27 18:34:46,566 INFO L125 PetriNetUnfolderBase]: For 297716/297730 co-relation queries the response was YES. [2024-06-27 18:34:46,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60829 conditions, 9765 events. 6384/9765 cut-off events. For 297716/297730 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 60025 event pairs, 1619 based on Foata normal form. 12/9594 useless extension candidates. Maximal degree in co-relation 60749. Up to 8813 conditions per place. [2024-06-27 18:34:46,666 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 271 selfloop transitions, 33 changer transitions 0/314 dead transitions. [2024-06-27 18:34:46,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 314 transitions, 3628 flow [2024-06-27 18:34:46,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:34:46,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:34:46,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-27 18:34:46,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023148148148148 [2024-06-27 18:34:46,668 INFO L175 Difference]: Start difference. First operand has 184 places, 256 transitions, 2763 flow. Second operand 9 states and 217 transitions. [2024-06-27 18:34:46,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 314 transitions, 3628 flow [2024-06-27 18:34:46,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 314 transitions, 3505 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-27 18:34:47,002 INFO L231 Difference]: Finished difference. Result has 188 places, 261 transitions, 2832 flow [2024-06-27 18:34:47,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2640, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2832, PETRI_PLACES=188, PETRI_TRANSITIONS=261} [2024-06-27 18:34:47,003 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 134 predicate places. [2024-06-27 18:34:47,003 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 261 transitions, 2832 flow [2024-06-27 18:34:47,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:47,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:47,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:47,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:34:47,004 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 18:34:47,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:47,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1656223054, now seen corresponding path program 4 times [2024-06-27 18:34:47,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:47,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347227478] [2024-06-27 18:34:47,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:47,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:48,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:48,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:48,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347227478] [2024-06-27 18:34:48,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347227478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:48,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:48,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:34:48,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394911018] [2024-06-27 18:34:48,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:48,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:34:48,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:48,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:34:48,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:34:48,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:34:48,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 261 transitions, 2832 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:48,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:48,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:34:48,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:49,965 INFO L124 PetriNetUnfolderBase]: 6602/10031 cut-off events. [2024-06-27 18:34:49,965 INFO L125 PetriNetUnfolderBase]: For 326916/326930 co-relation queries the response was YES. [2024-06-27 18:34:50,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63883 conditions, 10031 events. 6602/10031 cut-off events. For 326916/326930 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 61083 event pairs, 1478 based on Foata normal form. 9/9872 useless extension candidates. Maximal degree in co-relation 63800. Up to 7934 conditions per place. [2024-06-27 18:34:50,061 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 251 selfloop transitions, 81 changer transitions 0/342 dead transitions. [2024-06-27 18:34:50,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 342 transitions, 4344 flow [2024-06-27 18:34:50,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:34:50,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:34:50,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 264 transitions. [2024-06-27 18:34:50,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-27 18:34:50,063 INFO L175 Difference]: Start difference. First operand has 188 places, 261 transitions, 2832 flow. Second operand 10 states and 264 transitions. [2024-06-27 18:34:50,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 342 transitions, 4344 flow [2024-06-27 18:34:50,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 342 transitions, 4199 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-27 18:34:50,477 INFO L231 Difference]: Finished difference. Result has 193 places, 269 transitions, 3054 flow [2024-06-27 18:34:50,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2687, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3054, PETRI_PLACES=193, PETRI_TRANSITIONS=269} [2024-06-27 18:34:50,477 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 139 predicate places. [2024-06-27 18:34:50,477 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 269 transitions, 3054 flow [2024-06-27 18:34:50,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:50,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:50,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:50,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:34:50,478 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 18:34:50,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:50,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1656038480, now seen corresponding path program 1 times [2024-06-27 18:34:50,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:50,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187796162] [2024-06-27 18:34:50,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:50,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:50,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:51,595 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 18:34:51,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:51,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187796162] [2024-06-27 18:34:51,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187796162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:51,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:51,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:34:51,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126928688] [2024-06-27 18:34:51,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:51,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:34:51,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:51,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:34:51,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:34:51,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:34:51,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 269 transitions, 3054 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:51,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:51,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:34:51,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:53,481 INFO L124 PetriNetUnfolderBase]: 6659/10155 cut-off events. [2024-06-27 18:34:53,482 INFO L125 PetriNetUnfolderBase]: For 352360/352374 co-relation queries the response was YES. [2024-06-27 18:34:53,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66642 conditions, 10155 events. 6659/10155 cut-off events. For 352360/352374 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 62456 event pairs, 1523 based on Foata normal form. 9/9979 useless extension candidates. Maximal degree in co-relation 66557. Up to 8913 conditions per place. [2024-06-27 18:34:53,618 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 268 selfloop transitions, 45 changer transitions 0/323 dead transitions. [2024-06-27 18:34:53,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 323 transitions, 4126 flow [2024-06-27 18:34:53,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:34:53,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:34:53,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-27 18:34:53,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2024-06-27 18:34:53,620 INFO L175 Difference]: Start difference. First operand has 193 places, 269 transitions, 3054 flow. Second operand 8 states and 206 transitions. [2024-06-27 18:34:53,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 323 transitions, 4126 flow [2024-06-27 18:34:54,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 323 transitions, 3917 flow, removed 61 selfloop flow, removed 6 redundant places. [2024-06-27 18:34:54,252 INFO L231 Difference]: Finished difference. Result has 195 places, 272 transitions, 3039 flow [2024-06-27 18:34:54,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2845, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3039, PETRI_PLACES=195, PETRI_TRANSITIONS=272} [2024-06-27 18:34:54,253 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 141 predicate places. [2024-06-27 18:34:54,253 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 272 transitions, 3039 flow [2024-06-27 18:34:54,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:54,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:54,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:54,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:34:54,254 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 18:34:54,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:54,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1075025364, now seen corresponding path program 5 times [2024-06-27 18:34:54,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:54,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609475979] [2024-06-27 18:34:54,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:54,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:54,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:55,321 INFO 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 18:34:55,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:55,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609475979] [2024-06-27 18:34:55,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609475979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:55,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:55,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:34:55,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40673969] [2024-06-27 18:34:55,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:55,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:34:55,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:55,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:34:55,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:34:55,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:34:55,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 272 transitions, 3039 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:55,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:55,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:34:55,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:57,155 INFO L124 PetriNetUnfolderBase]: 6698/10193 cut-off events. [2024-06-27 18:34:57,155 INFO L125 PetriNetUnfolderBase]: For 358981/358995 co-relation queries the response was YES. [2024-06-27 18:34:57,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67155 conditions, 10193 events. 6698/10193 cut-off events. For 358981/358995 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 62429 event pairs, 1477 based on Foata normal form. 9/10026 useless extension candidates. Maximal degree in co-relation 67068. Up to 8246 conditions per place. [2024-06-27 18:34:57,282 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 246 selfloop transitions, 80 changer transitions 0/336 dead transitions. [2024-06-27 18:34:57,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 336 transitions, 4178 flow [2024-06-27 18:34:57,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:34:57,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:34:57,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-06-27 18:34:57,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5439814814814815 [2024-06-27 18:34:57,293 INFO L175 Difference]: Start difference. First operand has 195 places, 272 transitions, 3039 flow. Second operand 9 states and 235 transitions. [2024-06-27 18:34:57,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 336 transitions, 4178 flow [2024-06-27 18:34:57,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 336 transitions, 4008 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-27 18:34:57,782 INFO L231 Difference]: Finished difference. Result has 198 places, 276 transitions, 3141 flow [2024-06-27 18:34:57,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2869, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3141, PETRI_PLACES=198, PETRI_TRANSITIONS=276} [2024-06-27 18:34:57,783 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 144 predicate places. [2024-06-27 18:34:57,783 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 276 transitions, 3141 flow [2024-06-27 18:34:57,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:57,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:57,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:57,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:34:57,784 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:34:57,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:57,784 INFO L85 PathProgramCache]: Analyzing trace with hash -2021798078, now seen corresponding path program 1 times [2024-06-27 18:34:57,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:57,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437442110] [2024-06-27 18:34:57,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:57,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:58,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:58,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:58,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437442110] [2024-06-27 18:34:58,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437442110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:58,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:58,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:34:58,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510420239] [2024-06-27 18:34:58,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:58,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:34:58,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:58,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:34:58,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:34:58,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:34:58,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 276 transitions, 3141 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 18:34:58,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:58,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:34:58,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:00,240 INFO L124 PetriNetUnfolderBase]: 6321/9792 cut-off events. [2024-06-27 18:35:00,240 INFO L125 PetriNetUnfolderBase]: For 366878/366969 co-relation queries the response was YES. [2024-06-27 18:35:00,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65043 conditions, 9792 events. 6321/9792 cut-off events. For 366878/366969 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 61753 event pairs, 1631 based on Foata normal form. 49/9589 useless extension candidates. Maximal degree in co-relation 64955. Up to 8723 conditions per place. [2024-06-27 18:35:00,362 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 258 selfloop transitions, 24 changer transitions 0/307 dead transitions. [2024-06-27 18:35:00,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 307 transitions, 3934 flow [2024-06-27 18:35:00,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:35:00,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:35:00,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-27 18:35:00,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-27 18:35:00,363 INFO L175 Difference]: Start difference. First operand has 198 places, 276 transitions, 3141 flow. Second operand 6 states and 148 transitions. [2024-06-27 18:35:00,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 307 transitions, 3934 flow [2024-06-27 18:35:00,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 307 transitions, 3691 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-27 18:35:00,828 INFO L231 Difference]: Finished difference. Result has 197 places, 281 transitions, 3038 flow [2024-06-27 18:35:00,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2908, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3038, PETRI_PLACES=197, PETRI_TRANSITIONS=281} [2024-06-27 18:35:00,831 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 143 predicate places. [2024-06-27 18:35:00,831 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 281 transitions, 3038 flow [2024-06-27 18:35:00,832 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 18:35:00,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:00,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:00,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:35:00,832 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 18:35:00,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:00,833 INFO L85 PathProgramCache]: Analyzing trace with hash -477672264, now seen corresponding path program 2 times [2024-06-27 18:35:00,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:00,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654845898] [2024-06-27 18:35:00,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:00,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:01,889 INFO 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 18:35:01,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:01,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654845898] [2024-06-27 18:35:01,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654845898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:01,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:01,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:35:01,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346672313] [2024-06-27 18:35:01,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:01,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:35:01,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:01,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:35:01,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:35:01,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:01,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 281 transitions, 3038 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:01,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:01,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:01,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:03,779 INFO L124 PetriNetUnfolderBase]: 6791/10417 cut-off events. [2024-06-27 18:35:03,779 INFO L125 PetriNetUnfolderBase]: For 381519/381521 co-relation queries the response was YES. [2024-06-27 18:35:03,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67824 conditions, 10417 events. 6791/10417 cut-off events. For 381519/381521 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 64885 event pairs, 1922 based on Foata normal form. 6/10248 useless extension candidates. Maximal degree in co-relation 67735. Up to 9261 conditions per place. [2024-06-27 18:35:03,895 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 283 selfloop transitions, 35 changer transitions 0/328 dead transitions. [2024-06-27 18:35:03,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 328 transitions, 4046 flow [2024-06-27 18:35:03,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:35:03,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:35:03,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 18:35:03,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130208333333334 [2024-06-27 18:35:03,897 INFO L175 Difference]: Start difference. First operand has 197 places, 281 transitions, 3038 flow. Second operand 8 states and 197 transitions. [2024-06-27 18:35:03,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 328 transitions, 4046 flow [2024-06-27 18:35:04,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 328 transitions, 3983 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-27 18:35:04,383 INFO L231 Difference]: Finished difference. Result has 202 places, 284 transitions, 3157 flow [2024-06-27 18:35:04,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2975, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3157, PETRI_PLACES=202, PETRI_TRANSITIONS=284} [2024-06-27 18:35:04,383 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 148 predicate places. [2024-06-27 18:35:04,383 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 284 transitions, 3157 flow [2024-06-27 18:35:04,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:04,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:04,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:04,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:35:04,384 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 18:35:04,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:04,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1517165360, now seen corresponding path program 6 times [2024-06-27 18:35:04,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:04,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177813761] [2024-06-27 18:35:04,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:04,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:05,366 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 18:35:05,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:05,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177813761] [2024-06-27 18:35:05,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177813761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:05,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:05,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:35:05,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085814110] [2024-06-27 18:35:05,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:05,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:35:05,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:05,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:35:05,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:35:05,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:05,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 284 transitions, 3157 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:05,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:05,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:05,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:07,439 INFO L124 PetriNetUnfolderBase]: 6875/10527 cut-off events. [2024-06-27 18:35:07,440 INFO L125 PetriNetUnfolderBase]: For 406981/406983 co-relation queries the response was YES. [2024-06-27 18:35:07,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70031 conditions, 10527 events. 6875/10527 cut-off events. For 406981/406983 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 65457 event pairs, 1930 based on Foata normal form. 6/10360 useless extension candidates. Maximal degree in co-relation 69941. Up to 9050 conditions per place. [2024-06-27 18:35:07,631 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 281 selfloop transitions, 50 changer transitions 0/341 dead transitions. [2024-06-27 18:35:07,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 341 transitions, 4245 flow [2024-06-27 18:35:07,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:35:07,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:35:07,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-27 18:35:07,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 18:35:07,633 INFO L175 Difference]: Start difference. First operand has 202 places, 284 transitions, 3157 flow. Second operand 9 states and 225 transitions. [2024-06-27 18:35:07,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 341 transitions, 4245 flow [2024-06-27 18:35:08,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 341 transitions, 4087 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-27 18:35:08,400 INFO L231 Difference]: Finished difference. Result has 205 places, 288 transitions, 3234 flow [2024-06-27 18:35:08,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2999, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3234, PETRI_PLACES=205, PETRI_TRANSITIONS=288} [2024-06-27 18:35:08,401 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 151 predicate places. [2024-06-27 18:35:08,402 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 288 transitions, 3234 flow [2024-06-27 18:35:08,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:08,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:08,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:08,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:35:08,402 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 18:35:08,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:08,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1261551636, now seen corresponding path program 3 times [2024-06-27 18:35:08,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:08,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160496686] [2024-06-27 18:35:08,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:08,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:09,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:09,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:09,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160496686] [2024-06-27 18:35:09,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160496686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:09,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:09,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:35:09,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358871678] [2024-06-27 18:35:09,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:09,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:35:09,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:09,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:35:09,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:35:09,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:09,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 288 transitions, 3234 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:09,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:09,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:09,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:12,054 INFO L124 PetriNetUnfolderBase]: 6943/10643 cut-off events. [2024-06-27 18:35:12,055 INFO L125 PetriNetUnfolderBase]: For 427050/427054 co-relation queries the response was YES. [2024-06-27 18:35:12,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71908 conditions, 10643 events. 6943/10643 cut-off events. For 427050/427054 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 66398 event pairs, 2002 based on Foata normal form. 6/10472 useless extension candidates. Maximal degree in co-relation 71817. Up to 9615 conditions per place. [2024-06-27 18:35:12,205 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 292 selfloop transitions, 29 changer transitions 0/331 dead transitions. [2024-06-27 18:35:12,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 331 transitions, 4170 flow [2024-06-27 18:35:12,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:35:12,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:35:12,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 18:35:12,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026041666666666 [2024-06-27 18:35:12,206 INFO L175 Difference]: Start difference. First operand has 205 places, 288 transitions, 3234 flow. Second operand 8 states and 193 transitions. [2024-06-27 18:35:12,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 331 transitions, 4170 flow [2024-06-27 18:35:12,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 331 transitions, 3965 flow, removed 55 selfloop flow, removed 7 redundant places. [2024-06-27 18:35:12,859 INFO L231 Difference]: Finished difference. Result has 206 places, 291 transitions, 3209 flow [2024-06-27 18:35:12,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3029, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3209, PETRI_PLACES=206, PETRI_TRANSITIONS=291} [2024-06-27 18:35:12,860 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 152 predicate places. [2024-06-27 18:35:12,860 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 291 transitions, 3209 flow [2024-06-27 18:35:12,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:12,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:12,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:12,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:35:12,861 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:12,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:12,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1517338340, now seen corresponding path program 7 times [2024-06-27 18:35:12,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:12,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961382237] [2024-06-27 18:35:12,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:12,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:13,859 INFO 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 18:35:13,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:13,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961382237] [2024-06-27 18:35:13,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961382237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:13,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:13,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:35:13,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924647868] [2024-06-27 18:35:13,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:13,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:35:13,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:13,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:35:13,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:35:13,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:13,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 291 transitions, 3209 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:13,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:13,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:13,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:15,768 INFO L124 PetriNetUnfolderBase]: 7027/10767 cut-off events. [2024-06-27 18:35:15,768 INFO L125 PetriNetUnfolderBase]: For 448302/448306 co-relation queries the response was YES. [2024-06-27 18:35:15,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72929 conditions, 10767 events. 7027/10767 cut-off events. For 448302/448306 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 67205 event pairs, 1910 based on Foata normal form. 6/10594 useless extension candidates. Maximal degree in co-relation 72837. Up to 9266 conditions per place. [2024-06-27 18:35:16,294 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 290 selfloop transitions, 49 changer transitions 0/349 dead transitions. [2024-06-27 18:35:16,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 349 transitions, 4417 flow [2024-06-27 18:35:16,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:35:16,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:35:16,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-27 18:35:16,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 18:35:16,295 INFO L175 Difference]: Start difference. First operand has 206 places, 291 transitions, 3209 flow. Second operand 9 states and 225 transitions. [2024-06-27 18:35:16,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 349 transitions, 4417 flow [2024-06-27 18:35:16,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 349 transitions, 4261 flow, removed 51 selfloop flow, removed 6 redundant places. [2024-06-27 18:35:16,788 INFO L231 Difference]: Finished difference. Result has 209 places, 295 transitions, 3298 flow [2024-06-27 18:35:16,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3053, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3298, PETRI_PLACES=209, PETRI_TRANSITIONS=295} [2024-06-27 18:35:16,789 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 155 predicate places. [2024-06-27 18:35:16,789 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 295 transitions, 3298 flow [2024-06-27 18:35:16,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:16,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:16,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:16,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:35:16,790 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 18:35:16,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:16,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1517342990, now seen corresponding path program 8 times [2024-06-27 18:35:16,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:16,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085398826] [2024-06-27 18:35:16,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:16,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:17,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:17,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:17,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085398826] [2024-06-27 18:35:17,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085398826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:17,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:17,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:35:17,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170726433] [2024-06-27 18:35:17,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:17,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:35:17,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:17,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:35:17,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:35:17,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:17,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 295 transitions, 3298 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:17,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:17,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:17,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:19,842 INFO L124 PetriNetUnfolderBase]: 7174/10938 cut-off events. [2024-06-27 18:35:19,843 INFO L125 PetriNetUnfolderBase]: For 476555/476561 co-relation queries the response was YES. [2024-06-27 18:35:19,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76267 conditions, 10938 events. 7174/10938 cut-off events. For 476555/476561 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 67828 event pairs, 1914 based on Foata normal form. 6/10773 useless extension candidates. Maximal degree in co-relation 76174. Up to 9155 conditions per place. [2024-06-27 18:35:19,996 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 297 selfloop transitions, 62 changer transitions 0/369 dead transitions. [2024-06-27 18:35:19,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 369 transitions, 4928 flow [2024-06-27 18:35:19,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:35:19,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:35:20,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2024-06-27 18:35:20,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5270833333333333 [2024-06-27 18:35:20,013 INFO L175 Difference]: Start difference. First operand has 209 places, 295 transitions, 3298 flow. Second operand 10 states and 253 transitions. [2024-06-27 18:35:20,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 369 transitions, 4928 flow [2024-06-27 18:35:20,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 369 transitions, 4713 flow, removed 61 selfloop flow, removed 7 redundant places. [2024-06-27 18:35:20,679 INFO L231 Difference]: Finished difference. Result has 213 places, 303 transitions, 3485 flow [2024-06-27 18:35:20,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3083, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3485, PETRI_PLACES=213, PETRI_TRANSITIONS=303} [2024-06-27 18:35:20,679 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 159 predicate places. [2024-06-27 18:35:20,680 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 303 transitions, 3485 flow [2024-06-27 18:35:20,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:20,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:20,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:20,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:35:20,680 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 18:35:20,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:20,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1261558580, now seen corresponding path program 9 times [2024-06-27 18:35:20,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:20,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984041827] [2024-06-27 18:35:20,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:20,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:21,676 INFO 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 18:35:21,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:21,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984041827] [2024-06-27 18:35:21,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984041827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:21,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:21,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:35:21,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331922583] [2024-06-27 18:35:21,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:21,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:35:21,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:21,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:35:21,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:35:21,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:21,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 303 transitions, 3485 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:21,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:21,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:21,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:23,824 INFO L124 PetriNetUnfolderBase]: 7202/11040 cut-off events. [2024-06-27 18:35:23,824 INFO L125 PetriNetUnfolderBase]: For 498615/498621 co-relation queries the response was YES. [2024-06-27 18:35:23,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77664 conditions, 11040 events. 7202/11040 cut-off events. For 498615/498621 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 69204 event pairs, 2012 based on Foata normal form. 6/10858 useless extension candidates. Maximal degree in co-relation 77569. Up to 9882 conditions per place. [2024-06-27 18:35:23,977 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 312 selfloop transitions, 34 changer transitions 0/356 dead transitions. [2024-06-27 18:35:23,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 356 transitions, 4548 flow [2024-06-27 18:35:23,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:35:23,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:35:23,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-27 18:35:23,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-06-27 18:35:23,979 INFO L175 Difference]: Start difference. First operand has 213 places, 303 transitions, 3485 flow. Second operand 9 states and 219 transitions. [2024-06-27 18:35:23,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 356 transitions, 4548 flow [2024-06-27 18:35:24,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 356 transitions, 4306 flow, removed 92 selfloop flow, removed 6 redundant places. [2024-06-27 18:35:24,681 INFO L231 Difference]: Finished difference. Result has 216 places, 307 transitions, 3477 flow [2024-06-27 18:35:24,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3267, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3477, PETRI_PLACES=216, PETRI_TRANSITIONS=307} [2024-06-27 18:35:24,682 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 162 predicate places. [2024-06-27 18:35:24,682 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 307 transitions, 3477 flow [2024-06-27 18:35:24,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:24,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:24,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:24,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:35:24,683 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 18:35:24,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:24,683 INFO L85 PathProgramCache]: Analyzing trace with hash -212572044, now seen corresponding path program 4 times [2024-06-27 18:35:24,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:24,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902797073] [2024-06-27 18:35:24,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:24,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:25,555 INFO 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 18:35:25,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:25,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902797073] [2024-06-27 18:35:25,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902797073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:25,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:25,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:35:25,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695309788] [2024-06-27 18:35:25,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:25,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:35:25,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:25,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:35:25,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:35:25,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:25,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 307 transitions, 3477 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:25,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:25,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:25,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:27,717 INFO L124 PetriNetUnfolderBase]: 7292/11213 cut-off events. [2024-06-27 18:35:27,718 INFO L125 PetriNetUnfolderBase]: For 511104/511110 co-relation queries the response was YES. [2024-06-27 18:35:27,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78296 conditions, 11213 events. 7292/11213 cut-off events. For 511104/511110 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 70689 event pairs, 1986 based on Foata normal form. 6/11016 useless extension candidates. Maximal degree in co-relation 78199. Up to 10012 conditions per place. [2024-06-27 18:35:27,853 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 313 selfloop transitions, 37 changer transitions 0/360 dead transitions. [2024-06-27 18:35:27,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 360 transitions, 4535 flow [2024-06-27 18:35:27,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:35:27,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:35:27,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 18:35:27,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130208333333334 [2024-06-27 18:35:27,855 INFO L175 Difference]: Start difference. First operand has 216 places, 307 transitions, 3477 flow. Second operand 8 states and 197 transitions. [2024-06-27 18:35:27,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 360 transitions, 4535 flow [2024-06-27 18:35:28,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 360 transitions, 4364 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-27 18:35:28,496 INFO L231 Difference]: Finished difference. Result has 218 places, 314 transitions, 3551 flow [2024-06-27 18:35:28,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3306, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3551, PETRI_PLACES=218, PETRI_TRANSITIONS=314} [2024-06-27 18:35:28,497 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 164 predicate places. [2024-06-27 18:35:28,497 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 314 transitions, 3551 flow [2024-06-27 18:35:28,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:28,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:28,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:28,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:35:28,498 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 18:35:28,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:28,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1252383696, now seen corresponding path program 5 times [2024-06-27 18:35:28,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:28,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092086065] [2024-06-27 18:35:28,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:28,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:29,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:29,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:29,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092086065] [2024-06-27 18:35:29,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092086065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:29,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:29,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:35:29,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565306011] [2024-06-27 18:35:29,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:29,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:35:29,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:29,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:35:29,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:35:29,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:29,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 314 transitions, 3551 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:29,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:29,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:29,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:31,732 INFO L124 PetriNetUnfolderBase]: 7323/11260 cut-off events. [2024-06-27 18:35:31,732 INFO L125 PetriNetUnfolderBase]: For 528547/528553 co-relation queries the response was YES. [2024-06-27 18:35:31,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79218 conditions, 11260 events. 7323/11260 cut-off events. For 528547/528553 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 71174 event pairs, 2008 based on Foata normal form. 6/11062 useless extension candidates. Maximal degree in co-relation 79119. Up to 9976 conditions per place. [2024-06-27 18:35:31,893 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 310 selfloop transitions, 44 changer transitions 0/364 dead transitions. [2024-06-27 18:35:31,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 364 transitions, 4623 flow [2024-06-27 18:35:31,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:35:31,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:35:31,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 18:35:31,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-06-27 18:35:31,894 INFO L175 Difference]: Start difference. First operand has 218 places, 314 transitions, 3551 flow. Second operand 8 states and 198 transitions. [2024-06-27 18:35:31,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 364 transitions, 4623 flow [2024-06-27 18:35:32,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 364 transitions, 4422 flow, removed 68 selfloop flow, removed 5 redundant places. [2024-06-27 18:35:32,632 INFO L231 Difference]: Finished difference. Result has 221 places, 317 transitions, 3586 flow [2024-06-27 18:35:32,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3350, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3586, PETRI_PLACES=221, PETRI_TRANSITIONS=317} [2024-06-27 18:35:32,632 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 167 predicate places. [2024-06-27 18:35:32,633 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 317 transitions, 3586 flow [2024-06-27 18:35:32,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:32,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:32,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:32,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:35:32,633 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 18:35:32,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:32,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1303752806, now seen corresponding path program 1 times [2024-06-27 18:35:32,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:32,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076903767] [2024-06-27 18:35:32,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:32,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:33,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:33,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:33,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076903767] [2024-06-27 18:35:33,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076903767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:33,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:33,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:35:33,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074918587] [2024-06-27 18:35:33,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:33,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:35:33,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:33,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:35:33,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:35:33,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:33,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 317 transitions, 3586 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:33,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:33,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:33,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:35,709 INFO L124 PetriNetUnfolderBase]: 7349/11330 cut-off events. [2024-06-27 18:35:35,709 INFO L125 PetriNetUnfolderBase]: For 540527/540527 co-relation queries the response was YES. [2024-06-27 18:35:35,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79814 conditions, 11330 events. 7349/11330 cut-off events. For 540527/540527 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 71931 event pairs, 1950 based on Foata normal form. 3/11133 useless extension candidates. Maximal degree in co-relation 79714. Up to 10014 conditions per place. [2024-06-27 18:35:35,838 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 312 selfloop transitions, 46 changer transitions 0/368 dead transitions. [2024-06-27 18:35:35,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 368 transitions, 4688 flow [2024-06-27 18:35:35,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:35:35,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:35:35,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 18:35:35,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182291666666666 [2024-06-27 18:35:35,839 INFO L175 Difference]: Start difference. First operand has 221 places, 317 transitions, 3586 flow. Second operand 8 states and 199 transitions. [2024-06-27 18:35:35,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 368 transitions, 4688 flow [2024-06-27 18:35:36,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 368 transitions, 4490 flow, removed 59 selfloop flow, removed 6 redundant places. [2024-06-27 18:35:36,517 INFO L231 Difference]: Finished difference. Result has 223 places, 321 transitions, 3650 flow [2024-06-27 18:35:36,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3388, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3650, PETRI_PLACES=223, PETRI_TRANSITIONS=321} [2024-06-27 18:35:36,518 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 169 predicate places. [2024-06-27 18:35:36,518 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 321 transitions, 3650 flow [2024-06-27 18:35:36,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:36,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:36,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:36,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:35:36,519 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 18:35:36,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:36,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1517343114, now seen corresponding path program 5 times [2024-06-27 18:35:36,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:36,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510988198] [2024-06-27 18:35:36,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:36,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:37,473 INFO 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 18:35:37,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:37,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510988198] [2024-06-27 18:35:37,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510988198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:37,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:37,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:35:37,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940727705] [2024-06-27 18:35:37,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:37,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:35:37,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:37,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:35:37,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:35:37,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:37,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 321 transitions, 3650 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:37,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:37,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:37,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:39,523 INFO L124 PetriNetUnfolderBase]: 7343/11277 cut-off events. [2024-06-27 18:35:39,524 INFO L125 PetriNetUnfolderBase]: For 548238/548238 co-relation queries the response was YES. [2024-06-27 18:35:39,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80050 conditions, 11277 events. 7343/11277 cut-off events. For 548238/548238 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 71106 event pairs, 2063 based on Foata normal form. 4/11096 useless extension candidates. Maximal degree in co-relation 79949. Up to 10253 conditions per place. [2024-06-27 18:35:39,700 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 340 selfloop transitions, 21 changer transitions 0/371 dead transitions. [2024-06-27 18:35:39,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 371 transitions, 4636 flow [2024-06-27 18:35:39,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:35:39,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:35:39,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-06-27 18:35:39,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837962962962963 [2024-06-27 18:35:39,702 INFO L175 Difference]: Start difference. First operand has 223 places, 321 transitions, 3650 flow. Second operand 9 states and 209 transitions. [2024-06-27 18:35:39,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 371 transitions, 4636 flow [2024-06-27 18:35:40,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 371 transitions, 4430 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-06-27 18:35:40,382 INFO L231 Difference]: Finished difference. Result has 226 places, 323 transitions, 3619 flow [2024-06-27 18:35:40,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3444, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3619, PETRI_PLACES=226, PETRI_TRANSITIONS=323} [2024-06-27 18:35:40,383 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 172 predicate places. [2024-06-27 18:35:40,383 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 323 transitions, 3619 flow [2024-06-27 18:35:40,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:40,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:40,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:40,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:35:40,384 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:40,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:40,384 INFO L85 PathProgramCache]: Analyzing trace with hash -2009447678, now seen corresponding path program 2 times [2024-06-27 18:35:40,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:40,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614514939] [2024-06-27 18:35:40,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:40,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:40,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:40,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:40,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614514939] [2024-06-27 18:35:40,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614514939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:40,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:40,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:35:40,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128648853] [2024-06-27 18:35:40,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:40,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:35:40,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:40,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:35:40,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:35:41,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:35:41,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 323 transitions, 3619 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 18:35:41,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:41,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:35:41,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:42,715 INFO L124 PetriNetUnfolderBase]: 6854/10676 cut-off events. [2024-06-27 18:35:42,715 INFO L125 PetriNetUnfolderBase]: For 554436/554546 co-relation queries the response was YES. [2024-06-27 18:35:42,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75720 conditions, 10676 events. 6854/10676 cut-off events. For 554436/554546 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 68855 event pairs, 1988 based on Foata normal form. 63/10497 useless extension candidates. Maximal degree in co-relation 75618. Up to 9518 conditions per place. [2024-06-27 18:35:42,897 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 296 selfloop transitions, 15 changer transitions 0/340 dead transitions. [2024-06-27 18:35:42,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 340 transitions, 4287 flow [2024-06-27 18:35:42,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:35:42,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:35:42,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-27 18:35:42,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-27 18:35:42,898 INFO L175 Difference]: Start difference. First operand has 226 places, 323 transitions, 3619 flow. Second operand 6 states and 138 transitions. [2024-06-27 18:35:42,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 340 transitions, 4287 flow [2024-06-27 18:35:43,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 340 transitions, 4086 flow, removed 81 selfloop flow, removed 7 redundant places. [2024-06-27 18:35:43,601 INFO L231 Difference]: Finished difference. Result has 225 places, 323 transitions, 3456 flow [2024-06-27 18:35:43,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3418, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3456, PETRI_PLACES=225, PETRI_TRANSITIONS=323} [2024-06-27 18:35:43,602 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 171 predicate places. [2024-06-27 18:35:43,602 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 323 transitions, 3456 flow [2024-06-27 18:35:43,602 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 18:35:43,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:43,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:43,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:35:43,603 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:43,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:43,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2009648155, now seen corresponding path program 1 times [2024-06-27 18:35:43,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:43,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079059591] [2024-06-27 18:35:43,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:43,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:44,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:44,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:44,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079059591] [2024-06-27 18:35:44,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079059591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:44,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:44,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:35:44,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892811808] [2024-06-27 18:35:44,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:44,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:35:44,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:44,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:35:44,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:35:44,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:44,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 323 transitions, 3456 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 18:35:44,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:44,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:44,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:46,166 INFO L124 PetriNetUnfolderBase]: 7354/11363 cut-off events. [2024-06-27 18:35:46,166 INFO L125 PetriNetUnfolderBase]: For 557585/557585 co-relation queries the response was YES. [2024-06-27 18:35:46,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79219 conditions, 11363 events. 7354/11363 cut-off events. For 557585/557585 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 72400 event pairs, 2032 based on Foata normal form. 3/11159 useless extension candidates. Maximal degree in co-relation 79116. Up to 10219 conditions per place. [2024-06-27 18:35:46,291 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 312 selfloop transitions, 34 changer transitions 0/356 dead transitions. [2024-06-27 18:35:46,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 356 transitions, 4403 flow [2024-06-27 18:35:46,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:35:46,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:35:46,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-27 18:35:46,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-27 18:35:46,292 INFO L175 Difference]: Start difference. First operand has 225 places, 323 transitions, 3456 flow. Second operand 6 states and 145 transitions. [2024-06-27 18:35:46,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 356 transitions, 4403 flow [2024-06-27 18:35:46,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 356 transitions, 4352 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 18:35:46,812 INFO L231 Difference]: Finished difference. Result has 226 places, 329 transitions, 3558 flow [2024-06-27 18:35:46,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3405, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3558, PETRI_PLACES=226, PETRI_TRANSITIONS=329} [2024-06-27 18:35:46,813 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 172 predicate places. [2024-06-27 18:35:46,813 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 329 transitions, 3558 flow [2024-06-27 18:35:46,813 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 18:35:46,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:46,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:46,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:35:46,813 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:46,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:46,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1465159195, now seen corresponding path program 2 times [2024-06-27 18:35:46,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:46,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340314536] [2024-06-27 18:35:46,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:46,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:47,313 INFO 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 18:35:47,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:47,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340314536] [2024-06-27 18:35:47,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340314536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:47,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:47,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:35:47,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536052297] [2024-06-27 18:35:47,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:47,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:35:47,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:47,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:35:47,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:35:47,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:47,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 329 transitions, 3558 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 18:35:47,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:47,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:47,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:49,241 INFO L124 PetriNetUnfolderBase]: 7319/11278 cut-off events. [2024-06-27 18:35:49,242 INFO L125 PetriNetUnfolderBase]: For 567094/567106 co-relation queries the response was YES. [2024-06-27 18:35:49,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79254 conditions, 11278 events. 7319/11278 cut-off events. For 567094/567106 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 71425 event pairs, 2041 based on Foata normal form. 4/11086 useless extension candidates. Maximal degree in co-relation 79151. Up to 10168 conditions per place. [2024-06-27 18:35:49,398 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 306 selfloop transitions, 36 changer transitions 0/352 dead transitions. [2024-06-27 18:35:49,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 352 transitions, 4321 flow [2024-06-27 18:35:49,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:35:49,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:35:49,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-27 18:35:49,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-27 18:35:49,399 INFO L175 Difference]: Start difference. First operand has 226 places, 329 transitions, 3558 flow. Second operand 6 states and 142 transitions. [2024-06-27 18:35:49,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 352 transitions, 4321 flow [2024-06-27 18:35:50,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 352 transitions, 4269 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 18:35:50,123 INFO L231 Difference]: Finished difference. Result has 229 places, 329 transitions, 3588 flow [2024-06-27 18:35:50,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3506, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3588, PETRI_PLACES=229, PETRI_TRANSITIONS=329} [2024-06-27 18:35:50,124 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 175 predicate places. [2024-06-27 18:35:50,124 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 329 transitions, 3588 flow [2024-06-27 18:35:50,124 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 18:35:50,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:50,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:50,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:35:50,125 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:50,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:50,125 INFO L85 PathProgramCache]: Analyzing trace with hash -2009432829, now seen corresponding path program 1 times [2024-06-27 18:35:50,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:50,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103325428] [2024-06-27 18:35:50,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:50,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:50,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:50,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:50,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103325428] [2024-06-27 18:35:50,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103325428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:50,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:50,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:35:50,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549598992] [2024-06-27 18:35:50,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:50,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:35:50,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:50,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:35:50,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:35:50,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:50,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 329 transitions, 3588 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:50,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:50,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:50,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:52,734 INFO L124 PetriNetUnfolderBase]: 7269/11048 cut-off events. [2024-06-27 18:35:52,734 INFO L125 PetriNetUnfolderBase]: For 585309/585419 co-relation queries the response was YES. [2024-06-27 18:35:52,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78269 conditions, 11048 events. 7269/11048 cut-off events. For 585309/585419 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 68560 event pairs, 2154 based on Foata normal form. 65/10889 useless extension candidates. Maximal degree in co-relation 78165. Up to 10118 conditions per place. [2024-06-27 18:35:52,890 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 311 selfloop transitions, 20 changer transitions 0/358 dead transitions. [2024-06-27 18:35:52,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 358 transitions, 4354 flow [2024-06-27 18:35:52,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:35:52,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:35:52,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-27 18:35:52,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-27 18:35:52,891 INFO L175 Difference]: Start difference. First operand has 229 places, 329 transitions, 3588 flow. Second operand 7 states and 157 transitions. [2024-06-27 18:35:52,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 358 transitions, 4354 flow [2024-06-27 18:35:53,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 358 transitions, 4234 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 18:35:53,586 INFO L231 Difference]: Finished difference. Result has 230 places, 332 transitions, 3552 flow [2024-06-27 18:35:53,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3468, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3552, PETRI_PLACES=230, PETRI_TRANSITIONS=332} [2024-06-27 18:35:53,587 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 176 predicate places. [2024-06-27 18:35:53,587 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 332 transitions, 3552 flow [2024-06-27 18:35:53,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:53,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:53,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:53,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:35:53,588 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:53,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:53,588 INFO L85 PathProgramCache]: Analyzing trace with hash 829065771, now seen corresponding path program 1 times [2024-06-27 18:35:53,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:53,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499570638] [2024-06-27 18:35:53,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:53,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:54,660 INFO 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 18:35:54,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:54,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499570638] [2024-06-27 18:35:54,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499570638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:54,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:54,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:35:54,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128596089] [2024-06-27 18:35:54,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:54,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:35:54,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:54,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:35:54,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:35:54,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:54,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 332 transitions, 3552 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 18:35:54,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:54,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:54,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:57,267 INFO L124 PetriNetUnfolderBase]: 8104/12107 cut-off events. [2024-06-27 18:35:57,268 INFO L125 PetriNetUnfolderBase]: For 753534/753538 co-relation queries the response was YES. [2024-06-27 18:35:57,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95126 conditions, 12107 events. 8104/12107 cut-off events. For 753534/753538 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 74229 event pairs, 1443 based on Foata normal form. 28/11974 useless extension candidates. Maximal degree in co-relation 95021. Up to 9239 conditions per place. [2024-06-27 18:35:57,427 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 351 selfloop transitions, 79 changer transitions 0/440 dead transitions. [2024-06-27 18:35:57,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 440 transitions, 5990 flow [2024-06-27 18:35:57,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:35:57,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:35:57,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 294 transitions. [2024-06-27 18:35:57,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5568181818181818 [2024-06-27 18:35:57,429 INFO L175 Difference]: Start difference. First operand has 230 places, 332 transitions, 3552 flow. Second operand 11 states and 294 transitions. [2024-06-27 18:35:57,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 440 transitions, 5990 flow [2024-06-27 18:35:58,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 440 transitions, 5928 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 18:35:58,339 INFO L231 Difference]: Finished difference. Result has 238 places, 338 transitions, 3938 flow [2024-06-27 18:35:58,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3490, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3938, PETRI_PLACES=238, PETRI_TRANSITIONS=338} [2024-06-27 18:35:58,340 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 184 predicate places. [2024-06-27 18:35:58,340 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 338 transitions, 3938 flow [2024-06-27 18:35:58,341 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 18:35:58,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:58,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:58,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:35:58,341 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:58,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:58,341 INFO L85 PathProgramCache]: Analyzing trace with hash 830939721, now seen corresponding path program 2 times [2024-06-27 18:35:58,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:58,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596274639] [2024-06-27 18:35:58,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:58,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:59,672 INFO 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 18:35:59,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:59,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596274639] [2024-06-27 18:35:59,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596274639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:59,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:59,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:35:59,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409278619] [2024-06-27 18:35:59,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:59,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:35:59,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:59,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:35:59,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:35:59,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:59,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 338 transitions, 3938 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 18:35:59,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:59,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:59,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:02,971 INFO L124 PetriNetUnfolderBase]: 8724/13085 cut-off events. [2024-06-27 18:36:02,971 INFO L125 PetriNetUnfolderBase]: For 940189/940193 co-relation queries the response was YES. [2024-06-27 18:36:03,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110044 conditions, 13085 events. 8724/13085 cut-off events. For 940189/940193 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 82016 event pairs, 1931 based on Foata normal form. 28/12970 useless extension candidates. Maximal degree in co-relation 109936. Up to 10745 conditions per place. [2024-06-27 18:36:03,132 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 349 selfloop transitions, 80 changer transitions 0/439 dead transitions. [2024-06-27 18:36:03,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 439 transitions, 6198 flow [2024-06-27 18:36:03,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:36:03,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:36:03,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 292 transitions. [2024-06-27 18:36:03,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553030303030303 [2024-06-27 18:36:03,134 INFO L175 Difference]: Start difference. First operand has 238 places, 338 transitions, 3938 flow. Second operand 11 states and 292 transitions. [2024-06-27 18:36:03,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 439 transitions, 6198 flow [2024-06-27 18:36:04,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 439 transitions, 5995 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-06-27 18:36:04,252 INFO L231 Difference]: Finished difference. Result has 244 places, 342 transitions, 4125 flow [2024-06-27 18:36:04,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3735, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4125, PETRI_PLACES=244, PETRI_TRANSITIONS=342} [2024-06-27 18:36:04,252 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 190 predicate places. [2024-06-27 18:36:04,252 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 342 transitions, 4125 flow [2024-06-27 18:36:04,253 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 18:36:04,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:04,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:04,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:36:04,253 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:04,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:04,253 INFO L85 PathProgramCache]: Analyzing trace with hash 2120937323, now seen corresponding path program 3 times [2024-06-27 18:36:04,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:04,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430183521] [2024-06-27 18:36:04,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:04,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:05,212 INFO 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 18:36:05,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:05,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430183521] [2024-06-27 18:36:05,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430183521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:05,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:05,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:36:05,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550630367] [2024-06-27 18:36:05,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:05,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:36:05,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:05,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:36:05,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:36:05,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:05,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 342 transitions, 4125 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 18:36:05,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:05,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:05,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:08,203 INFO L124 PetriNetUnfolderBase]: 8829/13240 cut-off events. [2024-06-27 18:36:08,203 INFO L125 PetriNetUnfolderBase]: For 932734/932738 co-relation queries the response was YES. [2024-06-27 18:36:08,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110175 conditions, 13240 events. 8829/13240 cut-off events. For 932734/932738 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 83059 event pairs, 2025 based on Foata normal form. 34/13131 useless extension candidates. Maximal degree in co-relation 110064. Up to 11477 conditions per place. [2024-06-27 18:36:08,467 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 345 selfloop transitions, 80 changer transitions 0/435 dead transitions. [2024-06-27 18:36:08,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 435 transitions, 6001 flow [2024-06-27 18:36:08,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:36:08,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:36:08,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 288 transitions. [2024-06-27 18:36:08,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-06-27 18:36:08,469 INFO L175 Difference]: Start difference. First operand has 244 places, 342 transitions, 4125 flow. Second operand 11 states and 288 transitions. [2024-06-27 18:36:08,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 435 transitions, 6001 flow [2024-06-27 18:36:10,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 435 transitions, 5792 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-27 18:36:10,046 INFO L231 Difference]: Finished difference. Result has 248 places, 344 transitions, 4218 flow [2024-06-27 18:36:10,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3916, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4218, PETRI_PLACES=248, PETRI_TRANSITIONS=344} [2024-06-27 18:36:10,047 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 194 predicate places. [2024-06-27 18:36:10,047 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 344 transitions, 4218 flow [2024-06-27 18:36:10,047 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 18:36:10,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:10,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:10,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:36:10,047 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 18:36:10,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:10,048 INFO L85 PathProgramCache]: Analyzing trace with hash -2087341883, now seen corresponding path program 4 times [2024-06-27 18:36:10,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:10,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125062181] [2024-06-27 18:36:10,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:10,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:11,302 INFO 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 18:36:11,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:11,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125062181] [2024-06-27 18:36:11,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125062181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:11,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:11,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:36:11,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6816324] [2024-06-27 18:36:11,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:11,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:36:11,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:11,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:36:11,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:36:11,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:11,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 344 transitions, 4218 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 18:36:11,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:11,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:11,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:15,167 INFO L124 PetriNetUnfolderBase]: 9065/13622 cut-off events. [2024-06-27 18:36:15,167 INFO L125 PetriNetUnfolderBase]: For 956726/956730 co-relation queries the response was YES. [2024-06-27 18:36:15,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113635 conditions, 13622 events. 9065/13622 cut-off events. For 956726/956730 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 86262 event pairs, 2015 based on Foata normal form. 28/13516 useless extension candidates. Maximal degree in co-relation 113522. Up to 11388 conditions per place. [2024-06-27 18:36:15,528 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 359 selfloop transitions, 67 changer transitions 0/436 dead transitions. [2024-06-27 18:36:15,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 436 transitions, 6434 flow [2024-06-27 18:36:15,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:36:15,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:36:15,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 261 transitions. [2024-06-27 18:36:15,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54375 [2024-06-27 18:36:15,530 INFO L175 Difference]: Start difference. First operand has 248 places, 344 transitions, 4218 flow. Second operand 10 states and 261 transitions. [2024-06-27 18:36:15,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 436 transitions, 6434 flow [2024-06-27 18:36:16,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 436 transitions, 6188 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-27 18:36:16,902 INFO L231 Difference]: Finished difference. Result has 251 places, 351 transitions, 4428 flow [2024-06-27 18:36:16,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3978, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4428, PETRI_PLACES=251, PETRI_TRANSITIONS=351} [2024-06-27 18:36:16,902 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 197 predicate places. [2024-06-27 18:36:16,903 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 351 transitions, 4428 flow [2024-06-27 18:36:16,903 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 18:36:16,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:16,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:16,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:36:16,903 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 18:36:16,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:16,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1056299353, now seen corresponding path program 1 times [2024-06-27 18:36:16,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:16,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446918389] [2024-06-27 18:36:16,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:16,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:18,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:18,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:18,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446918389] [2024-06-27 18:36:18,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446918389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:18,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:18,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:36:18,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588055131] [2024-06-27 18:36:18,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:18,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:36:18,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:18,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:36:18,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:36:18,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:18,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 351 transitions, 4428 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 18:36:18,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:18,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:18,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:22,028 INFO L124 PetriNetUnfolderBase]: 9154/14187 cut-off events. [2024-06-27 18:36:22,029 INFO L125 PetriNetUnfolderBase]: For 948185/948189 co-relation queries the response was YES. [2024-06-27 18:36:22,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114160 conditions, 14187 events. 9154/14187 cut-off events. For 948185/948189 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 94627 event pairs, 2462 based on Foata normal form. 10/13914 useless extension candidates. Maximal degree in co-relation 114044. Up to 12790 conditions per place. [2024-06-27 18:36:22,337 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 366 selfloop transitions, 37 changer transitions 0/413 dead transitions. [2024-06-27 18:36:22,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 413 transitions, 5672 flow [2024-06-27 18:36:22,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:36:22,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:36:22,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-27 18:36:22,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5231481481481481 [2024-06-27 18:36:22,339 INFO L175 Difference]: Start difference. First operand has 251 places, 351 transitions, 4428 flow. Second operand 9 states and 226 transitions. [2024-06-27 18:36:22,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 413 transitions, 5672 flow [2024-06-27 18:36:24,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 413 transitions, 5486 flow, removed 62 selfloop flow, removed 5 redundant places. [2024-06-27 18:36:24,470 INFO L231 Difference]: Finished difference. Result has 255 places, 354 transitions, 4476 flow [2024-06-27 18:36:24,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4242, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4476, PETRI_PLACES=255, PETRI_TRANSITIONS=354} [2024-06-27 18:36:24,471 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 201 predicate places. [2024-06-27 18:36:24,471 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 354 transitions, 4476 flow [2024-06-27 18:36:24,471 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 18:36:24,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:24,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:24,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:36:24,472 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 18:36:24,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:24,472 INFO L85 PathProgramCache]: Analyzing trace with hash -2087338163, now seen corresponding path program 5 times [2024-06-27 18:36:24,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:24,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683679187] [2024-06-27 18:36:24,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:24,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:25,811 INFO 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 18:36:25,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:25,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683679187] [2024-06-27 18:36:25,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683679187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:25,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:25,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:36:25,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39716376] [2024-06-27 18:36:25,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:25,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:36:25,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:25,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:36:25,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:36:25,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:25,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 354 transitions, 4476 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 18:36:25,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:25,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:25,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:29,695 INFO L124 PetriNetUnfolderBase]: 9467/14660 cut-off events. [2024-06-27 18:36:29,695 INFO L125 PetriNetUnfolderBase]: For 1053584/1053588 co-relation queries the response was YES. [2024-06-27 18:36:29,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117721 conditions, 14660 events. 9467/14660 cut-off events. For 1053584/1053588 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 98376 event pairs, 2379 based on Foata normal form. 52/14431 useless extension candidates. Maximal degree in co-relation 117603. Up to 12388 conditions per place. [2024-06-27 18:36:30,122 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 376 selfloop transitions, 53 changer transitions 0/439 dead transitions. [2024-06-27 18:36:30,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 439 transitions, 6028 flow [2024-06-27 18:36:30,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:36:30,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:36:30,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-06-27 18:36:30,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2024-06-27 18:36:30,124 INFO L175 Difference]: Start difference. First operand has 255 places, 354 transitions, 4476 flow. Second operand 11 states and 282 transitions. [2024-06-27 18:36:30,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 439 transitions, 6028 flow [2024-06-27 18:36:32,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 439 transitions, 5818 flow, removed 70 selfloop flow, removed 7 redundant places. [2024-06-27 18:36:32,062 INFO L231 Difference]: Finished difference. Result has 259 places, 357 transitions, 4566 flow [2024-06-27 18:36:32,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4266, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4566, PETRI_PLACES=259, PETRI_TRANSITIONS=357} [2024-06-27 18:36:32,063 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 205 predicate places. [2024-06-27 18:36:32,063 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 357 transitions, 4566 flow [2024-06-27 18:36:32,063 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 18:36:32,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:32,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:32,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:36:32,064 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 18:36:32,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:32,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1492402399, now seen corresponding path program 2 times [2024-06-27 18:36:32,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:32,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382724840] [2024-06-27 18:36:32,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:32,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:33,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:33,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:33,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382724840] [2024-06-27 18:36:33,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382724840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:33,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:33,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:36:33,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004779157] [2024-06-27 18:36:33,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:33,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:36:33,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:33,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:36:33,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:36:33,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:33,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 357 transitions, 4566 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 18:36:33,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:33,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:33,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:37,400 INFO L124 PetriNetUnfolderBase]: 9534/14703 cut-off events. [2024-06-27 18:36:37,401 INFO L125 PetriNetUnfolderBase]: For 1003388/1003404 co-relation queries the response was YES. [2024-06-27 18:36:37,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119350 conditions, 14703 events. 9534/14703 cut-off events. For 1003388/1003404 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 98109 event pairs, 2233 based on Foata normal form. 13/14456 useless extension candidates. Maximal degree in co-relation 119231. Up to 12453 conditions per place. [2024-06-27 18:36:37,688 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 323 selfloop transitions, 86 changer transitions 0/419 dead transitions. [2024-06-27 18:36:37,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 419 transitions, 5954 flow [2024-06-27 18:36:37,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:36:37,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:36:37,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-27 18:36:37,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5393518518518519 [2024-06-27 18:36:37,690 INFO L175 Difference]: Start difference. First operand has 259 places, 357 transitions, 4566 flow. Second operand 9 states and 233 transitions. [2024-06-27 18:36:37,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 419 transitions, 5954 flow [2024-06-27 18:36:40,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 419 transitions, 5758 flow, removed 50 selfloop flow, removed 9 redundant places. [2024-06-27 18:36:40,228 INFO L231 Difference]: Finished difference. Result has 259 places, 360 transitions, 4712 flow [2024-06-27 18:36:40,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4370, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4712, PETRI_PLACES=259, PETRI_TRANSITIONS=360} [2024-06-27 18:36:40,231 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 205 predicate places. [2024-06-27 18:36:40,231 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 360 transitions, 4712 flow [2024-06-27 18:36:40,231 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 18:36:40,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:40,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:40,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:36:40,232 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 18:36:40,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:40,232 INFO L85 PathProgramCache]: Analyzing trace with hash 202415957, now seen corresponding path program 3 times [2024-06-27 18:36:40,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:40,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365749315] [2024-06-27 18:36:40,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:40,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:41,443 INFO 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 18:36:41,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:41,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365749315] [2024-06-27 18:36:41,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365749315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:41,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:41,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:36:41,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518926504] [2024-06-27 18:36:41,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:41,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:36:41,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:41,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:36:41,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:36:41,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:41,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 360 transitions, 4712 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 18:36:41,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:41,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:41,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:45,464 INFO L124 PetriNetUnfolderBase]: 9680/14905 cut-off events. [2024-06-27 18:36:45,464 INFO L125 PetriNetUnfolderBase]: For 993522/993538 co-relation queries the response was YES. [2024-06-27 18:36:45,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119643 conditions, 14905 events. 9680/14905 cut-off events. For 993522/993538 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 99412 event pairs, 2206 based on Foata normal form. 13/14661 useless extension candidates. Maximal degree in co-relation 119523. Up to 12411 conditions per place. [2024-06-27 18:36:45,726 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 320 selfloop transitions, 97 changer transitions 0/427 dead transitions. [2024-06-27 18:36:45,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 427 transitions, 6512 flow [2024-06-27 18:36:45,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:36:45,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:36:45,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-06-27 18:36:45,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5439814814814815 [2024-06-27 18:36:45,728 INFO L175 Difference]: Start difference. First operand has 259 places, 360 transitions, 4712 flow. Second operand 9 states and 235 transitions. [2024-06-27 18:36:45,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 427 transitions, 6512 flow [2024-06-27 18:36:48,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 427 transitions, 6194 flow, removed 75 selfloop flow, removed 7 redundant places. [2024-06-27 18:36:48,308 INFO L231 Difference]: Finished difference. Result has 261 places, 366 transitions, 4926 flow [2024-06-27 18:36:48,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4394, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4926, PETRI_PLACES=261, PETRI_TRANSITIONS=366} [2024-06-27 18:36:48,309 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 207 predicate places. [2024-06-27 18:36:48,309 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 366 transitions, 4926 flow [2024-06-27 18:36:48,309 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 18:36:48,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:48,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:48,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:36:48,310 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 18:36:48,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:48,310 INFO L85 PathProgramCache]: Analyzing trace with hash 202200755, now seen corresponding path program 6 times [2024-06-27 18:36:48,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:48,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025545034] [2024-06-27 18:36:48,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:48,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:48,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:49,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:49,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:49,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025545034] [2024-06-27 18:36:49,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025545034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:49,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:49,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:36:49,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813653782] [2024-06-27 18:36:49,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:49,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:36:49,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:49,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:36:49,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:36:49,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:49,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 366 transitions, 4926 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 18:36:49,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:49,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:49,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:53,035 INFO L124 PetriNetUnfolderBase]: 10085/14966 cut-off events. [2024-06-27 18:36:53,035 INFO L125 PetriNetUnfolderBase]: For 1155790/1155803 co-relation queries the response was YES. [2024-06-27 18:36:53,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127642 conditions, 14966 events. 10085/14966 cut-off events. For 1155790/1155803 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 94587 event pairs, 1818 based on Foata normal form. 36/14935 useless extension candidates. Maximal degree in co-relation 127521. Up to 12464 conditions per place. [2024-06-27 18:36:53,264 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 321 selfloop transitions, 139 changer transitions 0/470 dead transitions. [2024-06-27 18:36:53,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 470 transitions, 7556 flow [2024-06-27 18:36:53,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:36:53,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:36:53,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 263 transitions. [2024-06-27 18:36:53,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5479166666666667 [2024-06-27 18:36:53,266 INFO L175 Difference]: Start difference. First operand has 261 places, 366 transitions, 4926 flow. Second operand 10 states and 263 transitions. [2024-06-27 18:36:53,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 470 transitions, 7556 flow [2024-06-27 18:36:55,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 470 transitions, 7231 flow, removed 101 selfloop flow, removed 6 redundant places. [2024-06-27 18:36:55,812 INFO L231 Difference]: Finished difference. Result has 268 places, 393 transitions, 6115 flow [2024-06-27 18:36:55,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4611, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6115, PETRI_PLACES=268, PETRI_TRANSITIONS=393} [2024-06-27 18:36:55,813 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 214 predicate places. [2024-06-27 18:36:55,813 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 393 transitions, 6115 flow [2024-06-27 18:36:55,814 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 18:36:55,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:55,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:55,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:36:55,814 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 18:36:55,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:55,815 INFO L85 PathProgramCache]: Analyzing trace with hash 196844327, now seen corresponding path program 4 times [2024-06-27 18:36:55,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:55,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201002009] [2024-06-27 18:36:55,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:55,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:57,328 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 18:36:57,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:57,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201002009] [2024-06-27 18:36:57,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201002009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:57,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:57,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:36:57,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526728927] [2024-06-27 18:36:57,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:57,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:36:57,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:57,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:36:57,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:36:57,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:57,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 393 transitions, 6115 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 18:36:57,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:57,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:57,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:01,648 INFO L124 PetriNetUnfolderBase]: 10098/15620 cut-off events. [2024-06-27 18:37:01,649 INFO L125 PetriNetUnfolderBase]: For 1124282/1124295 co-relation queries the response was YES. [2024-06-27 18:37:01,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130550 conditions, 15620 events. 10098/15620 cut-off events. For 1124282/1124295 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 105651 event pairs, 2416 based on Foata normal form. 12/15344 useless extension candidates. Maximal degree in co-relation 130425. Up to 13289 conditions per place. [2024-06-27 18:37:01,880 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 362 selfloop transitions, 81 changer transitions 0/453 dead transitions. [2024-06-27 18:37:01,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 453 transitions, 7551 flow [2024-06-27 18:37:01,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:37:01,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:37:01,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-27 18:37:01,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 18:37:01,882 INFO L175 Difference]: Start difference. First operand has 268 places, 393 transitions, 6115 flow. Second operand 9 states and 234 transitions. [2024-06-27 18:37:01,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 453 transitions, 7551 flow [2024-06-27 18:37:05,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 453 transitions, 6748 flow, removed 389 selfloop flow, removed 2 redundant places. [2024-06-27 18:37:05,901 INFO L231 Difference]: Finished difference. Result has 275 places, 393 transitions, 5482 flow [2024-06-27 18:37:05,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5312, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5482, PETRI_PLACES=275, PETRI_TRANSITIONS=393} [2024-06-27 18:37:05,902 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 221 predicate places. [2024-06-27 18:37:05,902 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 393 transitions, 5482 flow [2024-06-27 18:37:05,902 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 18:37:05,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:05,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:05,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:37:05,903 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 18:37:05,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:05,903 INFO L85 PathProgramCache]: Analyzing trace with hash 196690505, now seen corresponding path program 7 times [2024-06-27 18:37:05,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:05,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339340424] [2024-06-27 18:37:05,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:05,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat