./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe004_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/safe004_power.oepc_pso.oepc_rmo.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/safe004_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/safe004_power.oepc_pso.oepc_rmo.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 18:49:22,866 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:49:22,900 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:49:22,903 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:49:22,903 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:49:22,916 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:49:22,917 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:49:22,917 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:49:22,918 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:49:22,918 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:49:22,918 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:49:22,918 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:49:22,919 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:49:22,919 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:49:22,919 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:49:22,920 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:49:22,920 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:49:22,920 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:49:22,920 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:49:22,921 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:49:22,921 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:49:22,921 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:49:22,921 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:49:22,922 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:49:22,922 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:49:22,922 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:49:22,922 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:49:22,922 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:49:22,923 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:49:22,923 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:49:22,923 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:49:22,923 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:49:22,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:49:22,924 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:49:22,924 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:49:22,924 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:49:22,924 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:49:22,924 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:49:22,924 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:49:22,925 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:49:22,925 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:49:22,925 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:49:22,925 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:49:22,925 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:49:23,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:49:23,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:49:23,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:49:23,173 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:49:23,174 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:49:23,175 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/safe004_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-27 18:49:23,293 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:49:23,293 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:49:23,294 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 18:49:24,266 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:49:24,471 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:49:24,471 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 18:49:24,480 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ec85bfc3/11a4db3ab3db40478d87955990e08935/FLAG5be4cba7e [2024-06-27 18:49:24,490 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ec85bfc3/11a4db3ab3db40478d87955990e08935 [2024-06-27 18:49:24,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:49:24,491 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:49:24,492 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:49:24,492 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:49:24,495 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:49:24,496 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:49:23" (1/2) ... [2024-06-27 18:49:24,497 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f93d599 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:24, skipping insertion in model container [2024-06-27 18:49:24,497 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:49:23" (1/2) ... [2024-06-27 18:49:24,498 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@661865c5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:24, skipping insertion in model container [2024-06-27 18:49:24,498 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:49:24" (2/2) ... [2024-06-27 18:49:24,498 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f93d599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:49:24, skipping insertion in model container [2024-06-27 18:49:24,498 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:49:24" (2/2) ... [2024-06-27 18:49:24,498 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:49:24,573 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:49:24,574 INFO L97 edCorrectnessWitness]: Location invariant before [L850-L850] ((((((((((((((((! multithreaded || y$r_buff0_thd2 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)) [2024-06-27 18:49:24,574 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] ((((((((((((((((! multithreaded || y$r_buff0_thd2 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)) [2024-06-27 18:49:24,574 INFO L97 edCorrectnessWitness]: Location invariant before [L847-L847] ((((((((((((((((! multithreaded || y$r_buff0_thd2 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)) [2024-06-27 18:49:24,575 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:49:24,575 INFO L106 edCorrectnessWitness]: ghost_update [L845-L845] multithreaded = 1; [2024-06-27 18:49:24,610 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:49:24,747 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/safe004_power.oepc_pso.oepc_rmo.oepc.i[970,983] [2024-06-27 18:49:24,981 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:49:25,005 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:49:25,036 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/safe004_power.oepc_pso.oepc_rmo.oepc.i[970,983] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:49:25,095 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:49:25,124 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:49:25,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:49:25 WrapperNode [2024-06-27 18:49:25,124 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:49:25,125 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:49:25,125 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:49:25,125 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:49:25,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:49:25" (1/1) ... [2024-06-27 18:49:25,152 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:49:25" (1/1) ... [2024-06-27 18:49:25,172 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 139 [2024-06-27 18:49:25,172 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:49:25,173 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:49:25,173 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:49:25,173 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:49:25,181 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:49:25" (1/1) ... [2024-06-27 18:49:25,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:49:25" (1/1) ... [2024-06-27 18:49:25,194 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:49:25" (1/1) ... [2024-06-27 18:49:25,214 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 18:49:25,216 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:49:25" (1/1) ... [2024-06-27 18:49:25,216 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:49:25" (1/1) ... [2024-06-27 18:49:25,223 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:49:25" (1/1) ... [2024-06-27 18:49:25,231 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:49:25" (1/1) ... [2024-06-27 18:49:25,233 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:49:25" (1/1) ... [2024-06-27 18:49:25,235 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:49:25" (1/1) ... [2024-06-27 18:49:25,237 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:49:25,238 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:49:25,238 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:49:25,238 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:49:25,239 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:49:25" (1/1) ... [2024-06-27 18:49:25,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:49:25,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:49:25,263 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 18:49:25,269 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 18:49:25,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:49:25,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:49:25,294 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:49:25,295 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:49:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:49:25,295 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:49:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:49:25,295 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:49:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:49:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:49:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:49:25,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:49:25,298 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 18:49:25,429 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:49:25,432 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:49:25,717 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:49:25,718 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:49:25,903 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:49:25,903 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:49:25,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:49:25 BoogieIcfgContainer [2024-06-27 18:49:25,904 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:49:25,906 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:49:25,906 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:49:25,909 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:49:25,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:49:23" (1/4) ... [2024-06-27 18:49:25,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25842c0b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:49:25, skipping insertion in model container [2024-06-27 18:49:25,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:49:24" (2/4) ... [2024-06-27 18:49:25,911 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25842c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:49:25, skipping insertion in model container [2024-06-27 18:49:25,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:49:25" (3/4) ... [2024-06-27 18:49:25,911 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25842c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:49:25, skipping insertion in model container [2024-06-27 18:49:25,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:49:25" (4/4) ... [2024-06-27 18:49:25,912 INFO L112 eAbstractionObserver]: Analyzing ICFG safe004_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 18:49:25,926 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:49:25,926 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:49:25,927 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:49:25,974 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:49:26,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 18:49:26,030 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-27 18:49:26,031 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:49:26,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-06-27 18:49:26,033 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 18:49:26,037 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 43 transitions, 95 flow [2024-06-27 18:49:26,047 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:49:26,053 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;@33551773, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:49:26,053 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:49:26,057 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:49:26,057 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:49:26,057 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:49:26,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:26,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:49:26,058 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 18:49:26,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:26,065 INFO L85 PathProgramCache]: Analyzing trace with hash 422841619, now seen corresponding path program 1 times [2024-06-27 18:49:26,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:26,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413550889] [2024-06-27 18:49:26,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:26,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:26,949 INFO 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 18:49:26,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:26,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413550889] [2024-06-27 18:49:26,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413550889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:26,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:26,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:49:26,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643057525] [2024-06-27 18:49:26,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:26,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:49:26,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:26,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:49:26,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:49:27,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:49:27,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:27,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:27,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:49:27,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:27,911 INFO L124 PetriNetUnfolderBase]: 5124/7351 cut-off events. [2024-06-27 18:49:27,911 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-06-27 18:49:27,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14787 conditions, 7351 events. 5124/7351 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 40879 event pairs, 1943 based on Foata normal form. 256/7240 useless extension candidates. Maximal degree in co-relation 14775. Up to 7279 conditions per place. [2024-06-27 18:49:27,946 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 47 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2024-06-27 18:49:27,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 61 transitions, 241 flow [2024-06-27 18:49:27,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:49:27,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:49:27,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-06-27 18:49:27,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2024-06-27 18:49:27,956 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 95 flow. Second operand 3 states and 93 transitions. [2024-06-27 18:49:27,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 61 transitions, 241 flow [2024-06-27 18:49:27,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 61 transitions, 236 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:49:27,960 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 127 flow [2024-06-27 18:49:27,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-06-27 18:49:27,965 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-06-27 18:49:27,965 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 127 flow [2024-06-27 18:49:27,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:27,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:27,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:49:27,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:49:27,965 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 18:49:27,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:27,966 INFO L85 PathProgramCache]: Analyzing trace with hash 422842806, now seen corresponding path program 1 times [2024-06-27 18:49:27,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:27,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657342909] [2024-06-27 18:49:27,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:27,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:27,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:28,043 INFO 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 18:49:28,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:28,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657342909] [2024-06-27 18:49:28,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657342909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:28,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:28,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:49:28,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987866210] [2024-06-27 18:49:28,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:28,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:49:28,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:28,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:49:28,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:49:28,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 46 [2024-06-27 18:49:28,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:28,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:28,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 46 [2024-06-27 18:49:28,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:28,389 INFO L124 PetriNetUnfolderBase]: 1375/2479 cut-off events. [2024-06-27 18:49:28,390 INFO L125 PetriNetUnfolderBase]: For 206/206 co-relation queries the response was YES. [2024-06-27 18:49:28,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4854 conditions, 2479 events. 1375/2479 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 16265 event pairs, 650 based on Foata normal form. 0/2329 useless extension candidates. Maximal degree in co-relation 4842. Up to 1731 conditions per place. [2024-06-27 18:49:28,402 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 39 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-06-27 18:49:28,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 62 transitions, 242 flow [2024-06-27 18:49:28,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:49:28,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:49:28,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-06-27 18:49:28,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7608695652173914 [2024-06-27 18:49:28,406 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 127 flow. Second operand 3 states and 105 transitions. [2024-06-27 18:49:28,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 62 transitions, 242 flow [2024-06-27 18:49:28,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 62 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:49:28,410 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 120 flow [2024-06-27 18:49:28,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2024-06-27 18:49:28,411 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-06-27 18:49:28,411 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 120 flow [2024-06-27 18:49:28,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:28,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:28,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:28,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:49:28,415 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 18:49:28,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:28,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1671046383, now seen corresponding path program 1 times [2024-06-27 18:49:28,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:28,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516724887] [2024-06-27 18:49:28,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:28,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:28,907 INFO 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 18:49:28,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:28,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516724887] [2024-06-27 18:49:28,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516724887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:28,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:28,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:49:28,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403996177] [2024-06-27 18:49:28,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:28,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:49:28,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:28,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:49:28,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:49:28,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:49:28,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:28,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:28,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:49:28,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:29,640 INFO L124 PetriNetUnfolderBase]: 4415/6994 cut-off events. [2024-06-27 18:49:29,640 INFO L125 PetriNetUnfolderBase]: For 1488/1488 co-relation queries the response was YES. [2024-06-27 18:49:29,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14907 conditions, 6994 events. 4415/6994 cut-off events. For 1488/1488 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 42165 event pairs, 3105 based on Foata normal form. 6/6778 useless extension candidates. Maximal degree in co-relation 14894. Up to 6259 conditions per place. [2024-06-27 18:49:29,679 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 55 selfloop transitions, 8 changer transitions 2/74 dead transitions. [2024-06-27 18:49:29,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 74 transitions, 328 flow [2024-06-27 18:49:29,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:49:29,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:49:29,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-06-27 18:49:29,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6141304347826086 [2024-06-27 18:49:29,684 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 120 flow. Second operand 4 states and 113 transitions. [2024-06-27 18:49:29,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 74 transitions, 328 flow [2024-06-27 18:49:29,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 74 transitions, 320 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:49:29,687 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 179 flow [2024-06-27 18:49:29,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-06-27 18:49:29,688 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-06-27 18:49:29,689 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 179 flow [2024-06-27 18:49:29,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:29,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:29,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:29,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:49:29,690 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 18:49:29,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:29,690 INFO L85 PathProgramCache]: Analyzing trace with hash -262828640, now seen corresponding path program 1 times [2024-06-27 18:49:29,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:29,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467860689] [2024-06-27 18:49:29,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:29,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:30,343 INFO 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 18:49:30,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:30,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467860689] [2024-06-27 18:49:30,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467860689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:30,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:30,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:49:30,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430856549] [2024-06-27 18:49:30,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:30,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:49:30,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:30,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:49:30,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:49:30,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:49:30,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:30,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:30,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:49:30,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:31,066 INFO L124 PetriNetUnfolderBase]: 4135/6619 cut-off events. [2024-06-27 18:49:31,066 INFO L125 PetriNetUnfolderBase]: For 2725/2725 co-relation queries the response was YES. [2024-06-27 18:49:31,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15533 conditions, 6619 events. 4135/6619 cut-off events. For 2725/2725 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 41047 event pairs, 1984 based on Foata normal form. 11/6399 useless extension candidates. Maximal degree in co-relation 15518. Up to 5541 conditions per place. [2024-06-27 18:49:31,102 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 75 selfloop transitions, 18 changer transitions 0/102 dead transitions. [2024-06-27 18:49:31,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 102 transitions, 525 flow [2024-06-27 18:49:31,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:49:31,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:49:31,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-06-27 18:49:31,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6434782608695652 [2024-06-27 18:49:31,104 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 179 flow. Second operand 5 states and 148 transitions. [2024-06-27 18:49:31,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 102 transitions, 525 flow [2024-06-27 18:49:31,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 102 transitions, 514 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-27 18:49:31,110 INFO L231 Difference]: Finished difference. Result has 60 places, 62 transitions, 293 flow [2024-06-27 18:49:31,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=293, PETRI_PLACES=60, PETRI_TRANSITIONS=62} [2024-06-27 18:49:31,111 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2024-06-27 18:49:31,112 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 62 transitions, 293 flow [2024-06-27 18:49:31,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:31,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:31,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:31,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:49:31,112 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 18:49:31,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:31,113 INFO L85 PathProgramCache]: Analyzing trace with hash 442248464, now seen corresponding path program 1 times [2024-06-27 18:49:31,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:31,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144661898] [2024-06-27 18:49:31,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:31,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:31,906 INFO 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 18:49:31,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:31,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144661898] [2024-06-27 18:49:31,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144661898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:31,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:31,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:49:31,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549144780] [2024-06-27 18:49:31,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:31,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:49:31,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:31,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:49:31,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:49:31,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:49:31,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 62 transitions, 293 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:31,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:31,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:49:31,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:32,783 INFO L124 PetriNetUnfolderBase]: 4241/6785 cut-off events. [2024-06-27 18:49:32,783 INFO L125 PetriNetUnfolderBase]: For 7438/7438 co-relation queries the response was YES. [2024-06-27 18:49:32,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18758 conditions, 6785 events. 4241/6785 cut-off events. For 7438/7438 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 41346 event pairs, 1899 based on Foata normal form. 9/6558 useless extension candidates. Maximal degree in co-relation 18739. Up to 5704 conditions per place. [2024-06-27 18:49:32,820 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 102 selfloop transitions, 31 changer transitions 0/142 dead transitions. [2024-06-27 18:49:32,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 142 transitions, 883 flow [2024-06-27 18:49:32,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:49:32,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:49:32,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2024-06-27 18:49:32,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6413043478260869 [2024-06-27 18:49:32,822 INFO L175 Difference]: Start difference. First operand has 60 places, 62 transitions, 293 flow. Second operand 6 states and 177 transitions. [2024-06-27 18:49:32,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 142 transitions, 883 flow [2024-06-27 18:49:32,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 142 transitions, 871 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-27 18:49:32,828 INFO L231 Difference]: Finished difference. Result has 69 places, 88 transitions, 547 flow [2024-06-27 18:49:32,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=547, PETRI_PLACES=69, PETRI_TRANSITIONS=88} [2024-06-27 18:49:32,829 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 17 predicate places. [2024-06-27 18:49:32,829 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 88 transitions, 547 flow [2024-06-27 18:49:32,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:32,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:32,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:32,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:49:32,830 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:32,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:32,831 INFO L85 PathProgramCache]: Analyzing trace with hash 824802239, now seen corresponding path program 1 times [2024-06-27 18:49:32,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:32,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345982079] [2024-06-27 18:49:32,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:32,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:33,855 INFO 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 18:49:33,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:33,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345982079] [2024-06-27 18:49:33,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345982079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:33,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:33,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:49:33,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167356942] [2024-06-27 18:49:33,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:33,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:49:33,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:33,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:49:33,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:49:33,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:49:33,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 88 transitions, 547 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:33,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:33,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:49:33,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:34,992 INFO L124 PetriNetUnfolderBase]: 4797/7597 cut-off events. [2024-06-27 18:49:34,992 INFO L125 PetriNetUnfolderBase]: For 15733/15735 co-relation queries the response was YES. [2024-06-27 18:49:35,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24992 conditions, 7597 events. 4797/7597 cut-off events. For 15733/15735 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 47231 event pairs, 1387 based on Foata normal form. 46/7404 useless extension candidates. Maximal degree in co-relation 24967. Up to 5901 conditions per place. [2024-06-27 18:49:35,043 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 123 selfloop transitions, 40 changer transitions 0/172 dead transitions. [2024-06-27 18:49:35,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 172 transitions, 1226 flow [2024-06-27 18:49:35,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:49:35,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:49:35,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 208 transitions. [2024-06-27 18:49:35,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6459627329192547 [2024-06-27 18:49:35,045 INFO L175 Difference]: Start difference. First operand has 69 places, 88 transitions, 547 flow. Second operand 7 states and 208 transitions. [2024-06-27 18:49:35,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 172 transitions, 1226 flow [2024-06-27 18:49:35,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 172 transitions, 1210 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-06-27 18:49:35,059 INFO L231 Difference]: Finished difference. Result has 76 places, 104 transitions, 773 flow [2024-06-27 18:49:35,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=773, PETRI_PLACES=76, PETRI_TRANSITIONS=104} [2024-06-27 18:49:35,061 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 24 predicate places. [2024-06-27 18:49:35,061 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 104 transitions, 773 flow [2024-06-27 18:49:35,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:35,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:35,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:35,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:49:35,062 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 18:49:35,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:35,063 INFO L85 PathProgramCache]: Analyzing trace with hash -246359271, now seen corresponding path program 1 times [2024-06-27 18:49:35,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:35,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815155484] [2024-06-27 18:49:35,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:35,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:35,463 INFO 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 18:49:35,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:35,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815155484] [2024-06-27 18:49:35,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815155484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:35,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:35,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:49:35,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255297315] [2024-06-27 18:49:35,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:35,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:49:35,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:35,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:49:35,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:49:35,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:49:35,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 104 transitions, 773 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:35,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:35,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:49:35,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:36,534 INFO L124 PetriNetUnfolderBase]: 5475/8657 cut-off events. [2024-06-27 18:49:36,535 INFO L125 PetriNetUnfolderBase]: For 26978/26978 co-relation queries the response was YES. [2024-06-27 18:49:36,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32677 conditions, 8657 events. 5475/8657 cut-off events. For 26978/26978 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 53701 event pairs, 2164 based on Foata normal form. 5/8385 useless extension candidates. Maximal degree in co-relation 32647. Up to 7695 conditions per place. [2024-06-27 18:49:36,588 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 118 selfloop transitions, 14 changer transitions 0/139 dead transitions. [2024-06-27 18:49:36,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 139 transitions, 1209 flow [2024-06-27 18:49:36,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:49:36,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:49:36,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-27 18:49:36,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508695652173913 [2024-06-27 18:49:36,589 INFO L175 Difference]: Start difference. First operand has 76 places, 104 transitions, 773 flow. Second operand 5 states and 117 transitions. [2024-06-27 18:49:36,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 139 transitions, 1209 flow [2024-06-27 18:49:36,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 139 transitions, 1158 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 18:49:36,604 INFO L231 Difference]: Finished difference. Result has 78 places, 108 transitions, 806 flow [2024-06-27 18:49:36,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=806, PETRI_PLACES=78, PETRI_TRANSITIONS=108} [2024-06-27 18:49:36,605 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 26 predicate places. [2024-06-27 18:49:36,605 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 108 transitions, 806 flow [2024-06-27 18:49:36,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:36,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:36,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:36,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:49:36,606 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 18:49:36,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:36,606 INFO L85 PathProgramCache]: Analyzing trace with hash 952538748, now seen corresponding path program 1 times [2024-06-27 18:49:36,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:36,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370207155] [2024-06-27 18:49:36,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:36,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:37,043 INFO 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 18:49:37,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:37,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370207155] [2024-06-27 18:49:37,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370207155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:37,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:37,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:49:37,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084420326] [2024-06-27 18:49:37,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:37,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:49:37,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:37,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:49:37,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:49:37,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:49:37,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 108 transitions, 806 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:37,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:37,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:49:37,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:38,049 INFO L124 PetriNetUnfolderBase]: 5465/8585 cut-off events. [2024-06-27 18:49:38,049 INFO L125 PetriNetUnfolderBase]: For 28326/28326 co-relation queries the response was YES. [2024-06-27 18:49:38,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33272 conditions, 8585 events. 5465/8585 cut-off events. For 28326/28326 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 52716 event pairs, 2171 based on Foata normal form. 4/8332 useless extension candidates. Maximal degree in co-relation 33239. Up to 7756 conditions per place. [2024-06-27 18:49:38,108 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 110 selfloop transitions, 20 changer transitions 0/137 dead transitions. [2024-06-27 18:49:38,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 137 transitions, 1172 flow [2024-06-27 18:49:38,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:49:38,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:49:38,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-27 18:49:38,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4746376811594203 [2024-06-27 18:49:38,110 INFO L175 Difference]: Start difference. First operand has 78 places, 108 transitions, 806 flow. Second operand 6 states and 131 transitions. [2024-06-27 18:49:38,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 137 transitions, 1172 flow [2024-06-27 18:49:38,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 137 transitions, 1136 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 18:49:38,130 INFO L231 Difference]: Finished difference. Result has 83 places, 114 transitions, 889 flow [2024-06-27 18:49:38,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=889, PETRI_PLACES=83, PETRI_TRANSITIONS=114} [2024-06-27 18:49:38,130 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 31 predicate places. [2024-06-27 18:49:38,131 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 114 transitions, 889 flow [2024-06-27 18:49:38,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:38,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:38,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:38,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:49:38,131 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 18:49:38,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:38,132 INFO L85 PathProgramCache]: Analyzing trace with hash -808171895, now seen corresponding path program 1 times [2024-06-27 18:49:38,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:38,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840331677] [2024-06-27 18:49:38,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:38,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:38,633 INFO 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 18:49:38,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:38,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840331677] [2024-06-27 18:49:38,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840331677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:38,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:38,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:49:38,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020436976] [2024-06-27 18:49:38,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:38,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:49:38,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:38,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:49:38,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:49:38,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:49:38,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 114 transitions, 889 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:38,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:38,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:49:38,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:39,638 INFO L124 PetriNetUnfolderBase]: 5537/8709 cut-off events. [2024-06-27 18:49:39,638 INFO L125 PetriNetUnfolderBase]: For 30151/30155 co-relation queries the response was YES. [2024-06-27 18:49:39,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34006 conditions, 8709 events. 5537/8709 cut-off events. For 30151/30155 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 53854 event pairs, 1855 based on Foata normal form. 14/8458 useless extension candidates. Maximal degree in co-relation 33970. Up to 7402 conditions per place. [2024-06-27 18:49:39,684 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 130 selfloop transitions, 25 changer transitions 0/162 dead transitions. [2024-06-27 18:49:39,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 162 transitions, 1443 flow [2024-06-27 18:49:39,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:49:39,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:49:39,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-27 18:49:39,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289855072463768 [2024-06-27 18:49:39,686 INFO L175 Difference]: Start difference. First operand has 83 places, 114 transitions, 889 flow. Second operand 6 states and 146 transitions. [2024-06-27 18:49:39,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 162 transitions, 1443 flow [2024-06-27 18:49:39,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 162 transitions, 1407 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 18:49:39,708 INFO L231 Difference]: Finished difference. Result has 86 places, 118 transitions, 958 flow [2024-06-27 18:49:39,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=958, PETRI_PLACES=86, PETRI_TRANSITIONS=118} [2024-06-27 18:49:39,709 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 34 predicate places. [2024-06-27 18:49:39,709 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 118 transitions, 958 flow [2024-06-27 18:49:39,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:39,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:39,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:39,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:49:39,710 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 18:49:39,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:39,710 INFO L85 PathProgramCache]: Analyzing trace with hash -528034153, now seen corresponding path program 2 times [2024-06-27 18:49:39,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:39,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033366122] [2024-06-27 18:49:39,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:39,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:40,144 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 18:49:40,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:40,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033366122] [2024-06-27 18:49:40,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033366122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:40,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:40,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:49:40,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960806424] [2024-06-27 18:49:40,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:40,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:49:40,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:40,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:49:40,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:49:40,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:49:40,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 118 transitions, 958 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:40,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:40,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:49:40,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:41,280 INFO L124 PetriNetUnfolderBase]: 5482/8607 cut-off events. [2024-06-27 18:49:41,280 INFO L125 PetriNetUnfolderBase]: For 32593/32593 co-relation queries the response was YES. [2024-06-27 18:49:41,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34223 conditions, 8607 events. 5482/8607 cut-off events. For 32593/32593 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 52867 event pairs, 2187 based on Foata normal form. 5/8351 useless extension candidates. Maximal degree in co-relation 34186. Up to 7744 conditions per place. [2024-06-27 18:49:41,344 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 126 selfloop transitions, 14 changer transitions 0/147 dead transitions. [2024-06-27 18:49:41,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 147 transitions, 1338 flow [2024-06-27 18:49:41,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:49:41,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:49:41,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-27 18:49:41,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-27 18:49:41,346 INFO L175 Difference]: Start difference. First operand has 86 places, 118 transitions, 958 flow. Second operand 6 states and 132 transitions. [2024-06-27 18:49:41,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 147 transitions, 1338 flow [2024-06-27 18:49:41,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 147 transitions, 1301 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 18:49:41,373 INFO L231 Difference]: Finished difference. Result has 89 places, 118 transitions, 958 flow [2024-06-27 18:49:41,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=958, PETRI_PLACES=89, PETRI_TRANSITIONS=118} [2024-06-27 18:49:41,374 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 37 predicate places. [2024-06-27 18:49:41,374 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 118 transitions, 958 flow [2024-06-27 18:49:41,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:41,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:41,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:41,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:49:41,375 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 18:49:41,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:41,375 INFO L85 PathProgramCache]: Analyzing trace with hash 716476058, now seen corresponding path program 1 times [2024-06-27 18:49:41,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:41,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842972540] [2024-06-27 18:49:41,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:41,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:41,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:41,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:41,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842972540] [2024-06-27 18:49:41,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842972540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:41,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:41,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:49:41,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762757886] [2024-06-27 18:49:41,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:41,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:49:41,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:41,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:49:41,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:49:42,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:49:42,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 118 transitions, 958 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:42,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:42,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:49:42,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:42,970 INFO L124 PetriNetUnfolderBase]: 5617/8800 cut-off events. [2024-06-27 18:49:42,970 INFO L125 PetriNetUnfolderBase]: For 35280/35280 co-relation queries the response was YES. [2024-06-27 18:49:42,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35037 conditions, 8800 events. 5617/8800 cut-off events. For 35280/35280 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 54177 event pairs, 1578 based on Foata normal form. 12/8550 useless extension candidates. Maximal degree in co-relation 34999. Up to 7427 conditions per place. [2024-06-27 18:49:43,026 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 122 selfloop transitions, 58 changer transitions 0/187 dead transitions. [2024-06-27 18:49:43,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 187 transitions, 1722 flow [2024-06-27 18:49:43,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:49:43,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:49:43,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 18:49:43,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372670807453416 [2024-06-27 18:49:43,028 INFO L175 Difference]: Start difference. First operand has 89 places, 118 transitions, 958 flow. Second operand 7 states and 173 transitions. [2024-06-27 18:49:43,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 187 transitions, 1722 flow [2024-06-27 18:49:43,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 187 transitions, 1645 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 18:49:43,058 INFO L231 Difference]: Finished difference. Result has 92 places, 142 transitions, 1273 flow [2024-06-27 18:49:43,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1273, PETRI_PLACES=92, PETRI_TRANSITIONS=142} [2024-06-27 18:49:43,059 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 40 predicate places. [2024-06-27 18:49:43,059 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 142 transitions, 1273 flow [2024-06-27 18:49:43,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:43,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:43,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:43,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:49:43,060 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 18:49:43,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:43,060 INFO L85 PathProgramCache]: Analyzing trace with hash 811077448, now seen corresponding path program 2 times [2024-06-27 18:49:43,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:43,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936147902] [2024-06-27 18:49:43,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:43,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:43,547 INFO 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 18:49:43,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:43,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936147902] [2024-06-27 18:49:43,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936147902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:43,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:43,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:49:43,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534568934] [2024-06-27 18:49:43,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:43,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:49:43,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:43,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:49:43,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:49:43,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:49:43,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 142 transitions, 1273 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:43,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:43,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:49:43,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:44,654 INFO L124 PetriNetUnfolderBase]: 5662/8857 cut-off events. [2024-06-27 18:49:44,654 INFO L125 PetriNetUnfolderBase]: For 42257/42257 co-relation queries the response was YES. [2024-06-27 18:49:44,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37866 conditions, 8857 events. 5662/8857 cut-off events. For 42257/42257 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 54209 event pairs, 1938 based on Foata normal form. 4/8600 useless extension candidates. Maximal degree in co-relation 37826. Up to 7985 conditions per place. [2024-06-27 18:49:44,715 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 146 selfloop transitions, 29 changer transitions 0/182 dead transitions. [2024-06-27 18:49:44,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 182 transitions, 1783 flow [2024-06-27 18:49:44,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:49:44,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:49:44,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-27 18:49:44,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-27 18:49:44,719 INFO L175 Difference]: Start difference. First operand has 92 places, 142 transitions, 1273 flow. Second operand 7 states and 154 transitions. [2024-06-27 18:49:44,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 182 transitions, 1783 flow [2024-06-27 18:49:44,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 182 transitions, 1743 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-27 18:49:44,761 INFO L231 Difference]: Finished difference. Result has 98 places, 151 transitions, 1399 flow [2024-06-27 18:49:44,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1236, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1399, PETRI_PLACES=98, PETRI_TRANSITIONS=151} [2024-06-27 18:49:44,762 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 46 predicate places. [2024-06-27 18:49:44,762 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 151 transitions, 1399 flow [2024-06-27 18:49:44,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:44,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:44,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:44,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:49:44,763 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 18:49:44,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:44,763 INFO L85 PathProgramCache]: Analyzing trace with hash 561460798, now seen corresponding path program 3 times [2024-06-27 18:49:44,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:44,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249893370] [2024-06-27 18:49:44,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:44,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:45,263 INFO 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 18:49:45,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:45,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249893370] [2024-06-27 18:49:45,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249893370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:45,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:45,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:49:45,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139656473] [2024-06-27 18:49:45,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:45,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:49:45,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:45,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:49:45,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:49:45,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:49:45,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 151 transitions, 1399 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:45,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:45,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:49:45,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:46,453 INFO L124 PetriNetUnfolderBase]: 5681/8883 cut-off events. [2024-06-27 18:49:46,453 INFO L125 PetriNetUnfolderBase]: For 45682/45682 co-relation queries the response was YES. [2024-06-27 18:49:46,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39031 conditions, 8883 events. 5681/8883 cut-off events. For 45682/45682 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 54286 event pairs, 1948 based on Foata normal form. 4/8626 useless extension candidates. Maximal degree in co-relation 38988. Up to 7946 conditions per place. [2024-06-27 18:49:46,510 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 152 selfloop transitions, 36 changer transitions 0/195 dead transitions. [2024-06-27 18:49:46,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 195 transitions, 2030 flow [2024-06-27 18:49:46,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:49:46,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:49:46,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-27 18:49:46,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4906832298136646 [2024-06-27 18:49:46,512 INFO L175 Difference]: Start difference. First operand has 98 places, 151 transitions, 1399 flow. Second operand 7 states and 158 transitions. [2024-06-27 18:49:46,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 195 transitions, 2030 flow [2024-06-27 18:49:46,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 195 transitions, 1983 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 18:49:46,546 INFO L231 Difference]: Finished difference. Result has 103 places, 160 transitions, 1564 flow [2024-06-27 18:49:46,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1352, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1564, PETRI_PLACES=103, PETRI_TRANSITIONS=160} [2024-06-27 18:49:46,547 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 51 predicate places. [2024-06-27 18:49:46,547 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 160 transitions, 1564 flow [2024-06-27 18:49:46,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:46,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:46,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:46,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:49:46,548 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 18:49:46,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:46,548 INFO L85 PathProgramCache]: Analyzing trace with hash 561736667, now seen corresponding path program 1 times [2024-06-27 18:49:46,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:46,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496080488] [2024-06-27 18:49:46,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:46,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:47,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:47,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:47,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496080488] [2024-06-27 18:49:47,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496080488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:47,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:47,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:49:47,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865686970] [2024-06-27 18:49:47,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:47,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:49:47,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:47,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:49:47,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:49:47,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:49:47,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 160 transitions, 1564 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:47,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:47,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:49:47,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:48,695 INFO L124 PetriNetUnfolderBase]: 5673/8871 cut-off events. [2024-06-27 18:49:48,695 INFO L125 PetriNetUnfolderBase]: For 49143/49143 co-relation queries the response was YES. [2024-06-27 18:49:48,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39604 conditions, 8871 events. 5673/8871 cut-off events. For 49143/49143 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 54300 event pairs, 1901 based on Foata normal form. 4/8614 useless extension candidates. Maximal degree in co-relation 39559. Up to 7999 conditions per place. [2024-06-27 18:49:48,755 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 161 selfloop transitions, 26 changer transitions 0/194 dead transitions. [2024-06-27 18:49:48,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 194 transitions, 2058 flow [2024-06-27 18:49:48,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:49:48,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:49:48,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-06-27 18:49:48,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720496894409938 [2024-06-27 18:49:48,757 INFO L175 Difference]: Start difference. First operand has 103 places, 160 transitions, 1564 flow. Second operand 7 states and 152 transitions. [2024-06-27 18:49:48,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 194 transitions, 2058 flow [2024-06-27 18:49:48,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 194 transitions, 2016 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 18:49:48,810 INFO L231 Difference]: Finished difference. Result has 107 places, 163 transitions, 1622 flow [2024-06-27 18:49:48,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1522, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1622, PETRI_PLACES=107, PETRI_TRANSITIONS=163} [2024-06-27 18:49:48,811 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 55 predicate places. [2024-06-27 18:49:48,811 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 163 transitions, 1622 flow [2024-06-27 18:49:48,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:48,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:48,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:48,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:49:48,812 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 18:49:48,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:48,812 INFO L85 PathProgramCache]: Analyzing trace with hash -113607244, now seen corresponding path program 1 times [2024-06-27 18:49:48,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:48,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668331943] [2024-06-27 18:49:48,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:48,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:49,405 INFO 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 18:49:49,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:49,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668331943] [2024-06-27 18:49:49,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668331943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:49,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:49,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:49:49,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553893814] [2024-06-27 18:49:49,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:49,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:49:49,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:49,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:49:49,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:49:49,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:49:49,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 163 transitions, 1622 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:49,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:49,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:49:49,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:50,601 INFO L124 PetriNetUnfolderBase]: 5694/8905 cut-off events. [2024-06-27 18:49:50,602 INFO L125 PetriNetUnfolderBase]: For 54136/54138 co-relation queries the response was YES. [2024-06-27 18:49:50,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40651 conditions, 8905 events. 5694/8905 cut-off events. For 54136/54138 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 54605 event pairs, 1620 based on Foata normal form. 2/8646 useless extension candidates. Maximal degree in co-relation 40604. Up to 7545 conditions per place. [2024-06-27 18:49:50,660 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 144 selfloop transitions, 63 changer transitions 0/214 dead transitions. [2024-06-27 18:49:50,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 214 transitions, 2359 flow [2024-06-27 18:49:50,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:49:50,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:49:50,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-27 18:49:50,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.531055900621118 [2024-06-27 18:49:50,662 INFO L175 Difference]: Start difference. First operand has 107 places, 163 transitions, 1622 flow. Second operand 7 states and 171 transitions. [2024-06-27 18:49:50,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 214 transitions, 2359 flow [2024-06-27 18:49:50,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 214 transitions, 2289 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 18:49:50,716 INFO L231 Difference]: Finished difference. Result has 109 places, 168 transitions, 1753 flow [2024-06-27 18:49:50,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1552, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1753, PETRI_PLACES=109, PETRI_TRANSITIONS=168} [2024-06-27 18:49:50,717 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 57 predicate places. [2024-06-27 18:49:50,717 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 168 transitions, 1753 flow [2024-06-27 18:49:50,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:50,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:50,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:50,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:49:50,717 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 18:49:50,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:50,718 INFO L85 PathProgramCache]: Analyzing trace with hash -113517034, now seen corresponding path program 2 times [2024-06-27 18:49:50,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:50,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42297850] [2024-06-27 18:49:50,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:50,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:51,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:51,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:51,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42297850] [2024-06-27 18:49:51,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42297850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:51,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:51,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:49:51,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81840874] [2024-06-27 18:49:51,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:51,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:49:51,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:51,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:49:51,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:49:51,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:49:51,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 168 transitions, 1753 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:51,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:51,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:49:51,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:52,483 INFO L124 PetriNetUnfolderBase]: 5673/8874 cut-off events. [2024-06-27 18:49:52,483 INFO L125 PetriNetUnfolderBase]: For 57316/57318 co-relation queries the response was YES. [2024-06-27 18:49:52,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40942 conditions, 8874 events. 5673/8874 cut-off events. For 57316/57318 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 54385 event pairs, 1618 based on Foata normal form. 6/8619 useless extension candidates. Maximal degree in co-relation 40894. Up to 7620 conditions per place. [2024-06-27 18:49:52,544 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 148 selfloop transitions, 55 changer transitions 0/210 dead transitions. [2024-06-27 18:49:52,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 210 transitions, 2361 flow [2024-06-27 18:49:52,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:49:52,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:49:52,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-27 18:49:52,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-27 18:49:52,546 INFO L175 Difference]: Start difference. First operand has 109 places, 168 transitions, 1753 flow. Second operand 7 states and 168 transitions. [2024-06-27 18:49:52,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 210 transitions, 2361 flow [2024-06-27 18:49:52,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 210 transitions, 2244 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-27 18:49:52,608 INFO L231 Difference]: Finished difference. Result has 113 places, 168 transitions, 1758 flow [2024-06-27 18:49:52,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1636, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1758, PETRI_PLACES=113, PETRI_TRANSITIONS=168} [2024-06-27 18:49:52,609 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 61 predicate places. [2024-06-27 18:49:52,609 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 168 transitions, 1758 flow [2024-06-27 18:49:52,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:52,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:52,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:52,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:49:52,610 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:52,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:52,610 INFO L85 PathProgramCache]: Analyzing trace with hash 735916579, now seen corresponding path program 1 times [2024-06-27 18:49:52,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:52,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627293041] [2024-06-27 18:49:52,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:52,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:53,145 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 18:49:53,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:53,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627293041] [2024-06-27 18:49:53,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627293041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:53,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:53,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:49:53,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652671053] [2024-06-27 18:49:53,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:53,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:49:53,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:53,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:49:53,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:49:53,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:49:53,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 168 transitions, 1758 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:53,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:53,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:49:53,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:54,366 INFO L124 PetriNetUnfolderBase]: 5705/8918 cut-off events. [2024-06-27 18:49:54,366 INFO L125 PetriNetUnfolderBase]: For 61279/61281 co-relation queries the response was YES. [2024-06-27 18:49:54,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41277 conditions, 8918 events. 5705/8918 cut-off events. For 61279/61281 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 54575 event pairs, 1588 based on Foata normal form. 8/8665 useless extension candidates. Maximal degree in co-relation 41228. Up to 7459 conditions per place. [2024-06-27 18:49:54,422 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 131 selfloop transitions, 81 changer transitions 0/219 dead transitions. [2024-06-27 18:49:54,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 219 transitions, 2511 flow [2024-06-27 18:49:54,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:49:54,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:49:54,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 18:49:54,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-27 18:49:54,425 INFO L175 Difference]: Start difference. First operand has 113 places, 168 transitions, 1758 flow. Second operand 7 states and 175 transitions. [2024-06-27 18:49:54,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 219 transitions, 2511 flow [2024-06-27 18:49:54,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 219 transitions, 2419 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:49:54,488 INFO L231 Difference]: Finished difference. Result has 117 places, 174 transitions, 1947 flow [2024-06-27 18:49:54,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1671, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1947, PETRI_PLACES=117, PETRI_TRANSITIONS=174} [2024-06-27 18:49:54,488 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 65 predicate places. [2024-06-27 18:49:54,488 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 174 transitions, 1947 flow [2024-06-27 18:49:54,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:54,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:54,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:54,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:49:54,489 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 18:49:54,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:54,489 INFO L85 PathProgramCache]: Analyzing trace with hash 735922159, now seen corresponding path program 2 times [2024-06-27 18:49:54,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:54,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143915409] [2024-06-27 18:49:54,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:54,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:55,020 INFO 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 18:49:55,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:55,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143915409] [2024-06-27 18:49:55,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143915409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:55,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:55,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:49:55,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317533008] [2024-06-27 18:49:55,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:55,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:49:55,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:55,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:49:55,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:49:55,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:49:55,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 174 transitions, 1947 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:55,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:55,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:49:55,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:56,284 INFO L124 PetriNetUnfolderBase]: 5747/8976 cut-off events. [2024-06-27 18:49:56,284 INFO L125 PetriNetUnfolderBase]: For 68410/68412 co-relation queries the response was YES. [2024-06-27 18:49:56,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42512 conditions, 8976 events. 5747/8976 cut-off events. For 68410/68412 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 54759 event pairs, 1588 based on Foata normal form. 4/8719 useless extension candidates. Maximal degree in co-relation 42461. Up to 7479 conditions per place. [2024-06-27 18:49:56,338 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 130 selfloop transitions, 81 changer transitions 0/218 dead transitions. [2024-06-27 18:49:56,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 218 transitions, 2614 flow [2024-06-27 18:49:56,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:49:56,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:49:56,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-27 18:49:56,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-27 18:49:56,339 INFO L175 Difference]: Start difference. First operand has 117 places, 174 transitions, 1947 flow. Second operand 7 states and 168 transitions. [2024-06-27 18:49:56,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 218 transitions, 2614 flow [2024-06-27 18:49:56,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 218 transitions, 2471 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 18:49:56,403 INFO L231 Difference]: Finished difference. Result has 120 places, 178 transitions, 2033 flow [2024-06-27 18:49:56,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1807, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2033, PETRI_PLACES=120, PETRI_TRANSITIONS=178} [2024-06-27 18:49:56,403 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 68 predicate places. [2024-06-27 18:49:56,404 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 178 transitions, 2033 flow [2024-06-27 18:49:56,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:56,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:56,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:56,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:49:56,404 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 18:49:56,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:56,404 INFO L85 PathProgramCache]: Analyzing trace with hash -626402047, now seen corresponding path program 3 times [2024-06-27 18:49:56,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:56,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324010142] [2024-06-27 18:49:56,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:56,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:56,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:56,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:56,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324010142] [2024-06-27 18:49:56,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324010142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:56,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:56,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:49:56,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152324527] [2024-06-27 18:49:56,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:56,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:49:56,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:56,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:49:56,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:49:56,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:49:56,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 178 transitions, 2033 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:56,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:56,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:49:56,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:58,031 INFO L124 PetriNetUnfolderBase]: 5763/8996 cut-off events. [2024-06-27 18:49:58,031 INFO L125 PetriNetUnfolderBase]: For 72953/72959 co-relation queries the response was YES. [2024-06-27 18:49:58,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42952 conditions, 8996 events. 5763/8996 cut-off events. For 72953/72959 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 54791 event pairs, 1949 based on Foata normal form. 10/8745 useless extension candidates. Maximal degree in co-relation 42900. Up to 8082 conditions per place. [2024-06-27 18:49:58,104 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 177 selfloop transitions, 31 changer transitions 0/215 dead transitions. [2024-06-27 18:49:58,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 215 transitions, 2609 flow [2024-06-27 18:49:58,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:49:58,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:49:58,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-27 18:49:58,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484472049689441 [2024-06-27 18:49:58,106 INFO L175 Difference]: Start difference. First operand has 120 places, 178 transitions, 2033 flow. Second operand 7 states and 156 transitions. [2024-06-27 18:49:58,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 215 transitions, 2609 flow [2024-06-27 18:49:58,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 215 transitions, 2492 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 18:49:58,196 INFO L231 Difference]: Finished difference. Result has 123 places, 182 transitions, 2055 flow [2024-06-27 18:49:58,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1919, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2055, PETRI_PLACES=123, PETRI_TRANSITIONS=182} [2024-06-27 18:49:58,197 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 71 predicate places. [2024-06-27 18:49:58,197 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 182 transitions, 2055 flow [2024-06-27 18:49:58,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:58,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:58,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:58,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:49:58,198 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 18:49:58,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:58,198 INFO L85 PathProgramCache]: Analyzing trace with hash -626394390, now seen corresponding path program 1 times [2024-06-27 18:49:58,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:58,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278119761] [2024-06-27 18:49:58,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:58,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:58,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:58,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:58,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278119761] [2024-06-27 18:49:58,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278119761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:58,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:58,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:49:58,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507109674] [2024-06-27 18:49:58,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:58,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:49:58,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:58,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:49:58,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:49:58,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:49:58,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 182 transitions, 2055 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:58,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:58,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:49:58,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:00,229 INFO L124 PetriNetUnfolderBase]: 5764/8993 cut-off events. [2024-06-27 18:50:00,229 INFO L125 PetriNetUnfolderBase]: For 75479/75479 co-relation queries the response was YES. [2024-06-27 18:50:00,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42823 conditions, 8993 events. 5764/8993 cut-off events. For 75479/75479 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 54762 event pairs, 1946 based on Foata normal form. 2/8734 useless extension candidates. Maximal degree in co-relation 42770. Up to 8106 conditions per place. [2024-06-27 18:50:00,299 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 177 selfloop transitions, 37 changer transitions 0/221 dead transitions. [2024-06-27 18:50:00,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 221 transitions, 2698 flow [2024-06-27 18:50:00,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:50:00,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:50:00,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-27 18:50:00,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4813664596273292 [2024-06-27 18:50:00,300 INFO L175 Difference]: Start difference. First operand has 123 places, 182 transitions, 2055 flow. Second operand 7 states and 155 transitions. [2024-06-27 18:50:00,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 221 transitions, 2698 flow [2024-06-27 18:50:00,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 221 transitions, 2619 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 18:50:00,390 INFO L231 Difference]: Finished difference. Result has 126 places, 191 transitions, 2220 flow [2024-06-27 18:50:00,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1986, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2220, PETRI_PLACES=126, PETRI_TRANSITIONS=191} [2024-06-27 18:50:00,390 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 74 predicate places. [2024-06-27 18:50:00,390 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 191 transitions, 2220 flow [2024-06-27 18:50:00,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:00,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:00,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:00,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:50:00,391 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 18:50:00,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:00,391 INFO L85 PathProgramCache]: Analyzing trace with hash 773083185, now seen corresponding path program 1 times [2024-06-27 18:50:00,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:00,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214034894] [2024-06-27 18:50:00,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:00,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:01,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:01,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:01,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214034894] [2024-06-27 18:50:01,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214034894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:01,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:01,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:50:01,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232579710] [2024-06-27 18:50:01,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:01,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:50:01,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:01,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:50:01,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:50:01,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:01,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 191 transitions, 2220 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:01,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:01,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:01,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:02,633 INFO L124 PetriNetUnfolderBase]: 6624/10179 cut-off events. [2024-06-27 18:50:02,633 INFO L125 PetriNetUnfolderBase]: For 97322/97330 co-relation queries the response was YES. [2024-06-27 18:50:02,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50406 conditions, 10179 events. 6624/10179 cut-off events. For 97322/97330 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 62250 event pairs, 1338 based on Foata normal form. 28/9966 useless extension candidates. Maximal degree in co-relation 50351. Up to 7210 conditions per place. [2024-06-27 18:50:02,731 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 222 selfloop transitions, 62 changer transitions 0/291 dead transitions. [2024-06-27 18:50:02,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 291 transitions, 3566 flow [2024-06-27 18:50:02,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:50:02,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:50:02,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-27 18:50:02,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5679347826086957 [2024-06-27 18:50:02,735 INFO L175 Difference]: Start difference. First operand has 126 places, 191 transitions, 2220 flow. Second operand 8 states and 209 transitions. [2024-06-27 18:50:02,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 291 transitions, 3566 flow [2024-06-27 18:50:02,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 291 transitions, 3514 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 18:50:02,907 INFO L231 Difference]: Finished difference. Result has 133 places, 218 transitions, 2693 flow [2024-06-27 18:50:02,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2168, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2693, PETRI_PLACES=133, PETRI_TRANSITIONS=218} [2024-06-27 18:50:02,907 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 81 predicate places. [2024-06-27 18:50:02,907 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 218 transitions, 2693 flow [2024-06-27 18:50:02,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:02,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:02,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:02,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:50:02,908 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 18:50:02,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:02,908 INFO L85 PathProgramCache]: Analyzing trace with hash 773143635, now seen corresponding path program 2 times [2024-06-27 18:50:02,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:02,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293531908] [2024-06-27 18:50:02,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:02,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:03,721 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 18:50:03,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:03,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293531908] [2024-06-27 18:50:03,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293531908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:03,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:03,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:50:03,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043962068] [2024-06-27 18:50:03,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:03,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:50:03,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:03,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:50:03,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:50:03,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:03,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 218 transitions, 2693 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:03,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:03,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:03,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:05,367 INFO L124 PetriNetUnfolderBase]: 6743/10499 cut-off events. [2024-06-27 18:50:05,367 INFO L125 PetriNetUnfolderBase]: For 119449/119457 co-relation queries the response was YES. [2024-06-27 18:50:05,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56076 conditions, 10499 events. 6743/10499 cut-off events. For 119449/119457 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 66128 event pairs, 1862 based on Foata normal form. 31/10241 useless extension candidates. Maximal degree in co-relation 56018. Up to 8617 conditions per place. [2024-06-27 18:50:05,454 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 230 selfloop transitions, 60 changer transitions 0/297 dead transitions. [2024-06-27 18:50:05,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 297 transitions, 3703 flow [2024-06-27 18:50:05,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:50:05,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:50:05,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-27 18:50:05,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5507246376811594 [2024-06-27 18:50:05,455 INFO L175 Difference]: Start difference. First operand has 133 places, 218 transitions, 2693 flow. Second operand 9 states and 228 transitions. [2024-06-27 18:50:05,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 297 transitions, 3703 flow [2024-06-27 18:50:05,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 297 transitions, 3595 flow, removed 49 selfloop flow, removed 2 redundant places. [2024-06-27 18:50:05,724 INFO L231 Difference]: Finished difference. Result has 141 places, 221 transitions, 2805 flow [2024-06-27 18:50:05,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2607, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2805, PETRI_PLACES=141, PETRI_TRANSITIONS=221} [2024-06-27 18:50:05,724 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 89 predicate places. [2024-06-27 18:50:05,724 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 221 transitions, 2805 flow [2024-06-27 18:50:05,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:05,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:05,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:05,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:50:05,725 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 18:50:05,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:05,725 INFO L85 PathProgramCache]: Analyzing trace with hash 891416013, now seen corresponding path program 1 times [2024-06-27 18:50:05,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:05,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196963713] [2024-06-27 18:50:05,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:05,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:06,633 INFO 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 18:50:06,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:06,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196963713] [2024-06-27 18:50:06,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196963713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:06,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:06,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:50:06,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830764121] [2024-06-27 18:50:06,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:06,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:50:06,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:06,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:50:06,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:50:06,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:06,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 221 transitions, 2805 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:06,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:06,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:06,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:08,352 INFO L124 PetriNetUnfolderBase]: 6965/10668 cut-off events. [2024-06-27 18:50:08,352 INFO L125 PetriNetUnfolderBase]: For 129049/129051 co-relation queries the response was YES. [2024-06-27 18:50:08,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57773 conditions, 10668 events. 6965/10668 cut-off events. For 129049/129051 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 66110 event pairs, 1750 based on Foata normal form. 28/10463 useless extension candidates. Maximal degree in co-relation 57712. Up to 8988 conditions per place. [2024-06-27 18:50:08,447 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 167 selfloop transitions, 102 changer transitions 0/276 dead transitions. [2024-06-27 18:50:08,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 276 transitions, 3651 flow [2024-06-27 18:50:08,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:50:08,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:50:08,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 18:50:08,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5353260869565217 [2024-06-27 18:50:08,448 INFO L175 Difference]: Start difference. First operand has 141 places, 221 transitions, 2805 flow. Second operand 8 states and 197 transitions. [2024-06-27 18:50:08,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 276 transitions, 3651 flow [2024-06-27 18:50:08,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 276 transitions, 3491 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 18:50:08,699 INFO L231 Difference]: Finished difference. Result has 142 places, 225 transitions, 2918 flow [2024-06-27 18:50:08,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2645, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2918, PETRI_PLACES=142, PETRI_TRANSITIONS=225} [2024-06-27 18:50:08,699 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 90 predicate places. [2024-06-27 18:50:08,699 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 225 transitions, 2918 flow [2024-06-27 18:50:08,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:08,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:08,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:08,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:50:08,700 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 18:50:08,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:08,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1800774059, now seen corresponding path program 2 times [2024-06-27 18:50:08,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:08,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342144805] [2024-06-27 18:50:08,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:08,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:09,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:09,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:09,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342144805] [2024-06-27 18:50:09,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342144805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:09,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:09,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:50:09,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874594769] [2024-06-27 18:50:09,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:09,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:50:09,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:09,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:50:09,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:50:09,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:09,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 225 transitions, 2918 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:09,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:09,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:09,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:11,212 INFO L124 PetriNetUnfolderBase]: 6999/10713 cut-off events. [2024-06-27 18:50:11,212 INFO L125 PetriNetUnfolderBase]: For 132216/132216 co-relation queries the response was YES. [2024-06-27 18:50:11,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58953 conditions, 10713 events. 6999/10713 cut-off events. For 132216/132216 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 66109 event pairs, 2210 based on Foata normal form. 4/10484 useless extension candidates. Maximal degree in co-relation 58891. Up to 9831 conditions per place. [2024-06-27 18:50:11,314 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 214 selfloop transitions, 47 changer transitions 0/268 dead transitions. [2024-06-27 18:50:11,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 268 transitions, 3612 flow [2024-06-27 18:50:11,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:50:11,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:50:11,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-27 18:50:11,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48097826086956524 [2024-06-27 18:50:11,315 INFO L175 Difference]: Start difference. First operand has 142 places, 225 transitions, 2918 flow. Second operand 8 states and 177 transitions. [2024-06-27 18:50:11,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 268 transitions, 3612 flow [2024-06-27 18:50:11,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 268 transitions, 3391 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 18:50:11,558 INFO L231 Difference]: Finished difference. Result has 144 places, 228 transitions, 2855 flow [2024-06-27 18:50:11,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2697, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2855, PETRI_PLACES=144, PETRI_TRANSITIONS=228} [2024-06-27 18:50:11,558 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 92 predicate places. [2024-06-27 18:50:11,558 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 228 transitions, 2855 flow [2024-06-27 18:50:11,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:11,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:11,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:11,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:50:11,558 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 18:50:11,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:11,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1286141867, now seen corresponding path program 3 times [2024-06-27 18:50:11,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:11,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38630466] [2024-06-27 18:50:11,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:11,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:12,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:12,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:12,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38630466] [2024-06-27 18:50:12,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38630466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:12,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:12,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:50:12,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266128290] [2024-06-27 18:50:12,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:12,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:50:12,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:12,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:50:12,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:50:12,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:12,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 228 transitions, 2855 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:12,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:12,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:12,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:13,887 INFO L124 PetriNetUnfolderBase]: 7038/10770 cut-off events. [2024-06-27 18:50:13,888 INFO L125 PetriNetUnfolderBase]: For 139142/139142 co-relation queries the response was YES. [2024-06-27 18:50:13,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59423 conditions, 10770 events. 7038/10770 cut-off events. For 139142/139142 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 66520 event pairs, 2172 based on Foata normal form. 4/10541 useless extension candidates. Maximal degree in co-relation 59360. Up to 9946 conditions per place. [2024-06-27 18:50:13,984 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 229 selfloop transitions, 36 changer transitions 0/272 dead transitions. [2024-06-27 18:50:13,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 272 transitions, 3565 flow [2024-06-27 18:50:13,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:50:13,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:50:13,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2024-06-27 18:50:13,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47554347826086957 [2024-06-27 18:50:13,985 INFO L175 Difference]: Start difference. First operand has 144 places, 228 transitions, 2855 flow. Second operand 8 states and 175 transitions. [2024-06-27 18:50:13,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 272 transitions, 3565 flow [2024-06-27 18:50:14,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 272 transitions, 3435 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 18:50:14,258 INFO L231 Difference]: Finished difference. Result has 147 places, 235 transitions, 2908 flow [2024-06-27 18:50:14,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2725, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2908, PETRI_PLACES=147, PETRI_TRANSITIONS=235} [2024-06-27 18:50:14,258 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 95 predicate places. [2024-06-27 18:50:14,258 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 235 transitions, 2908 flow [2024-06-27 18:50:14,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:14,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:14,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:14,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:50:14,259 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 18:50:14,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:14,259 INFO L85 PathProgramCache]: Analyzing trace with hash -236827851, now seen corresponding path program 4 times [2024-06-27 18:50:14,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:14,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453161054] [2024-06-27 18:50:14,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:14,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:14,975 INFO 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 18:50:14,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:14,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453161054] [2024-06-27 18:50:14,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453161054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:14,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:14,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:50:14,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98133704] [2024-06-27 18:50:14,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:14,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:50:14,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:14,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:50:14,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:50:15,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:15,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 235 transitions, 2908 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:15,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:15,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:15,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:16,679 INFO L124 PetriNetUnfolderBase]: 7072/10820 cut-off events. [2024-06-27 18:50:16,679 INFO L125 PetriNetUnfolderBase]: For 151498/151498 co-relation queries the response was YES. [2024-06-27 18:50:16,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60847 conditions, 10820 events. 7072/10820 cut-off events. For 151498/151498 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 66693 event pairs, 2214 based on Foata normal form. 4/10591 useless extension candidates. Maximal degree in co-relation 60782. Up to 10002 conditions per place. [2024-06-27 18:50:16,775 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 233 selfloop transitions, 36 changer transitions 0/276 dead transitions. [2024-06-27 18:50:16,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 276 transitions, 3620 flow [2024-06-27 18:50:16,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:50:16,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:50:16,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2024-06-27 18:50:16,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47554347826086957 [2024-06-27 18:50:16,776 INFO L175 Difference]: Start difference. First operand has 147 places, 235 transitions, 2908 flow. Second operand 8 states and 175 transitions. [2024-06-27 18:50:16,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 276 transitions, 3620 flow [2024-06-27 18:50:17,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 276 transitions, 3497 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-27 18:50:17,062 INFO L231 Difference]: Finished difference. Result has 150 places, 238 transitions, 2933 flow [2024-06-27 18:50:17,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2785, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2933, PETRI_PLACES=150, PETRI_TRANSITIONS=238} [2024-06-27 18:50:17,062 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 98 predicate places. [2024-06-27 18:50:17,062 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 238 transitions, 2933 flow [2024-06-27 18:50:17,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:17,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:17,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:17,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:50:17,063 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 18:50:17,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:17,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1510883901, now seen corresponding path program 1 times [2024-06-27 18:50:17,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:17,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956962738] [2024-06-27 18:50:17,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:17,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:17,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:17,770 INFO 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 18:50:17,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:17,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956962738] [2024-06-27 18:50:17,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956962738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:17,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:17,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:50:17,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376150049] [2024-06-27 18:50:17,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:17,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:50:17,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:17,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:50:17,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:50:17,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:17,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 238 transitions, 2933 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:17,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:17,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:17,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:19,425 INFO L124 PetriNetUnfolderBase]: 7064/10960 cut-off events. [2024-06-27 18:50:19,425 INFO L125 PetriNetUnfolderBase]: For 160822/160830 co-relation queries the response was YES. [2024-06-27 18:50:19,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61561 conditions, 10960 events. 7064/10960 cut-off events. For 160822/160830 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 68919 event pairs, 2204 based on Foata normal form. 10/10687 useless extension candidates. Maximal degree in co-relation 61495. Up to 9946 conditions per place. [2024-06-27 18:50:19,526 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 224 selfloop transitions, 45 changer transitions 0/276 dead transitions. [2024-06-27 18:50:19,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 276 transitions, 3678 flow [2024-06-27 18:50:19,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:50:19,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:50:19,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-27 18:50:19,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4813664596273292 [2024-06-27 18:50:19,527 INFO L175 Difference]: Start difference. First operand has 150 places, 238 transitions, 2933 flow. Second operand 7 states and 155 transitions. [2024-06-27 18:50:19,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 276 transitions, 3678 flow [2024-06-27 18:50:19,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 276 transitions, 3544 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-27 18:50:19,851 INFO L231 Difference]: Finished difference. Result has 152 places, 244 transitions, 3038 flow [2024-06-27 18:50:19,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2799, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3038, PETRI_PLACES=152, PETRI_TRANSITIONS=244} [2024-06-27 18:50:19,852 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 100 predicate places. [2024-06-27 18:50:19,852 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 244 transitions, 3038 flow [2024-06-27 18:50:19,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:19,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:19,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:19,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:50:19,852 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:19,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:19,852 INFO L85 PathProgramCache]: Analyzing trace with hash 2056611479, now seen corresponding path program 5 times [2024-06-27 18:50:19,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:19,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299376716] [2024-06-27 18:50:19,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:19,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:20,602 INFO 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 18:50:20,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:20,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299376716] [2024-06-27 18:50:20,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299376716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:20,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:20,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:50:20,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55208240] [2024-06-27 18:50:20,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:20,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:50:20,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:20,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:50:20,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:50:20,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:20,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 244 transitions, 3038 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:20,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:20,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:20,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:22,292 INFO L124 PetriNetUnfolderBase]: 7061/10953 cut-off events. [2024-06-27 18:50:22,293 INFO L125 PetriNetUnfolderBase]: For 165627/165627 co-relation queries the response was YES. [2024-06-27 18:50:22,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61627 conditions, 10953 events. 7061/10953 cut-off events. For 165627/165627 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 68875 event pairs, 2210 based on Foata normal form. 4/10674 useless extension candidates. Maximal degree in co-relation 61559. Up to 9940 conditions per place. [2024-06-27 18:50:22,393 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 235 selfloop transitions, 43 changer transitions 0/285 dead transitions. [2024-06-27 18:50:22,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 285 transitions, 3774 flow [2024-06-27 18:50:22,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:50:22,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:50:22,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-27 18:50:22,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-27 18:50:22,394 INFO L175 Difference]: Start difference. First operand has 152 places, 244 transitions, 3038 flow. Second operand 8 states and 176 transitions. [2024-06-27 18:50:22,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 285 transitions, 3774 flow [2024-06-27 18:50:22,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 285 transitions, 3692 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 18:50:22,678 INFO L231 Difference]: Finished difference. Result has 156 places, 247 transitions, 3128 flow [2024-06-27 18:50:22,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2956, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3128, PETRI_PLACES=156, PETRI_TRANSITIONS=247} [2024-06-27 18:50:22,679 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 104 predicate places. [2024-06-27 18:50:22,679 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 247 transitions, 3128 flow [2024-06-27 18:50:22,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:22,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:22,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:22,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:50:22,680 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:22,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:22,680 INFO L85 PathProgramCache]: Analyzing trace with hash 2019759179, now seen corresponding path program 1 times [2024-06-27 18:50:22,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:22,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160674103] [2024-06-27 18:50:22,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:22,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:22,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:23,210 INFO 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 18:50:23,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:23,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160674103] [2024-06-27 18:50:23,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160674103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:23,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:23,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:50:23,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180554727] [2024-06-27 18:50:23,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:23,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:50:23,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:23,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:50:23,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:50:23,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:23,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 247 transitions, 3128 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:23,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:23,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:23,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:24,725 INFO L124 PetriNetUnfolderBase]: 7076/10924 cut-off events. [2024-06-27 18:50:24,725 INFO L125 PetriNetUnfolderBase]: For 168238/168238 co-relation queries the response was YES. [2024-06-27 18:50:24,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62380 conditions, 10924 events. 7076/10924 cut-off events. For 168238/168238 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 68533 event pairs, 1871 based on Foata normal form. 3/10660 useless extension candidates. Maximal degree in co-relation 62311. Up to 9987 conditions per place. [2024-06-27 18:50:24,827 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 260 selfloop transitions, 17 changer transitions 0/284 dead transitions. [2024-06-27 18:50:24,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 284 transitions, 3930 flow [2024-06-27 18:50:24,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:50:24,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:50:24,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-27 18:50:24,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508695652173913 [2024-06-27 18:50:24,828 INFO L175 Difference]: Start difference. First operand has 156 places, 247 transitions, 3128 flow. Second operand 5 states and 117 transitions. [2024-06-27 18:50:24,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 284 transitions, 3930 flow [2024-06-27 18:50:25,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 284 transitions, 3786 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-27 18:50:25,167 INFO L231 Difference]: Finished difference. Result has 156 places, 254 transitions, 3142 flow [2024-06-27 18:50:25,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2988, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3142, PETRI_PLACES=156, PETRI_TRANSITIONS=254} [2024-06-27 18:50:25,168 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 104 predicate places. [2024-06-27 18:50:25,168 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 254 transitions, 3142 flow [2024-06-27 18:50:25,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:25,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:25,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:25,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:50:25,168 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 18:50:25,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:25,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1804224014, now seen corresponding path program 1 times [2024-06-27 18:50:25,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:25,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52461193] [2024-06-27 18:50:25,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:25,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:25,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:25,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:25,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52461193] [2024-06-27 18:50:25,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52461193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:25,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:25,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:50:25,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925817291] [2024-06-27 18:50:25,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:25,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:50:25,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:25,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:50:25,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:50:25,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:25,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 254 transitions, 3142 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:25,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:25,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:25,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:27,490 INFO L124 PetriNetUnfolderBase]: 7354/11252 cut-off events. [2024-06-27 18:50:27,490 INFO L125 PetriNetUnfolderBase]: For 186594/186596 co-relation queries the response was YES. [2024-06-27 18:50:27,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65667 conditions, 11252 events. 7354/11252 cut-off events. For 186594/186596 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 69831 event pairs, 1345 based on Foata normal form. 16/11036 useless extension candidates. Maximal degree in co-relation 65596. Up to 8688 conditions per place. [2024-06-27 18:50:27,592 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 212 selfloop transitions, 110 changer transitions 0/329 dead transitions. [2024-06-27 18:50:27,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 329 transitions, 4447 flow [2024-06-27 18:50:27,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:50:27,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:50:27,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 18:50:27,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271739130434783 [2024-06-27 18:50:27,594 INFO L175 Difference]: Start difference. First operand has 156 places, 254 transitions, 3142 flow. Second operand 8 states and 194 transitions. [2024-06-27 18:50:27,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 329 transitions, 4447 flow [2024-06-27 18:50:27,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 329 transitions, 4405 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-27 18:50:27,963 INFO L231 Difference]: Finished difference. Result has 164 places, 270 transitions, 3685 flow [2024-06-27 18:50:27,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3100, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3685, PETRI_PLACES=164, PETRI_TRANSITIONS=270} [2024-06-27 18:50:27,964 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 112 predicate places. [2024-06-27 18:50:27,964 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 270 transitions, 3685 flow [2024-06-27 18:50:27,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:27,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:27,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:27,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:50:27,964 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 18:50:27,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:27,965 INFO L85 PathProgramCache]: Analyzing trace with hash -819642140, now seen corresponding path program 2 times [2024-06-27 18:50:27,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:27,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841987393] [2024-06-27 18:50:27,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:27,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:28,746 INFO 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 18:50:28,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:28,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841987393] [2024-06-27 18:50:28,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841987393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:28,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:28,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:50:28,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884350872] [2024-06-27 18:50:28,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:28,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:50:28,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:28,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:50:28,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:50:28,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:28,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 270 transitions, 3685 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:28,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:28,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:28,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:30,766 INFO L124 PetriNetUnfolderBase]: 7669/11601 cut-off events. [2024-06-27 18:50:30,766 INFO L125 PetriNetUnfolderBase]: For 220568/220570 co-relation queries the response was YES. [2024-06-27 18:50:30,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71249 conditions, 11601 events. 7669/11601 cut-off events. For 220568/220570 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 71707 event pairs, 1809 based on Foata normal form. 16/11429 useless extension candidates. Maximal degree in co-relation 71174. Up to 9605 conditions per place. [2024-06-27 18:50:30,877 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 227 selfloop transitions, 115 changer transitions 0/349 dead transitions. [2024-06-27 18:50:30,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 349 transitions, 4888 flow [2024-06-27 18:50:30,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:50:30,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:50:30,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 245 transitions. [2024-06-27 18:50:30,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-06-27 18:50:30,879 INFO L175 Difference]: Start difference. First operand has 164 places, 270 transitions, 3685 flow. Second operand 10 states and 245 transitions. [2024-06-27 18:50:30,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 349 transitions, 4888 flow [2024-06-27 18:50:31,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 349 transitions, 4690 flow, removed 52 selfloop flow, removed 3 redundant places. [2024-06-27 18:50:31,380 INFO L231 Difference]: Finished difference. Result has 172 places, 276 transitions, 3891 flow [2024-06-27 18:50:31,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3487, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3891, PETRI_PLACES=172, PETRI_TRANSITIONS=276} [2024-06-27 18:50:31,381 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 120 predicate places. [2024-06-27 18:50:31,381 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 276 transitions, 3891 flow [2024-06-27 18:50:31,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:31,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:31,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:31,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:50:31,382 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 18:50:31,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:31,382 INFO L85 PathProgramCache]: Analyzing trace with hash -928135122, now seen corresponding path program 3 times [2024-06-27 18:50:31,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:31,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178971364] [2024-06-27 18:50:31,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:31,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:32,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:32,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:32,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178971364] [2024-06-27 18:50:32,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178971364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:32,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:32,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:50:32,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646265674] [2024-06-27 18:50:32,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:32,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:50:32,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:32,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:50:32,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:50:32,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:32,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 276 transitions, 3891 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:32,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:32,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:32,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:34,207 INFO L124 PetriNetUnfolderBase]: 7739/11711 cut-off events. [2024-06-27 18:50:34,207 INFO L125 PetriNetUnfolderBase]: For 234151/234153 co-relation queries the response was YES. [2024-06-27 18:50:34,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73147 conditions, 11711 events. 7739/11711 cut-off events. For 234151/234153 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 72466 event pairs, 1867 based on Foata normal form. 20/11543 useless extension candidates. Maximal degree in co-relation 73069. Up to 9972 conditions per place. [2024-06-27 18:50:34,335 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 219 selfloop transitions, 111 changer transitions 0/337 dead transitions. [2024-06-27 18:50:34,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 337 transitions, 4866 flow [2024-06-27 18:50:34,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:50:34,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:50:34,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-27 18:50:34,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5193236714975845 [2024-06-27 18:50:34,336 INFO L175 Difference]: Start difference. First operand has 172 places, 276 transitions, 3891 flow. Second operand 9 states and 215 transitions. [2024-06-27 18:50:34,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 337 transitions, 4866 flow [2024-06-27 18:50:34,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 337 transitions, 4725 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-27 18:50:34,933 INFO L231 Difference]: Finished difference. Result has 177 places, 281 transitions, 4096 flow [2024-06-27 18:50:34,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3750, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4096, PETRI_PLACES=177, PETRI_TRANSITIONS=281} [2024-06-27 18:50:34,933 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 125 predicate places. [2024-06-27 18:50:34,934 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 281 transitions, 4096 flow [2024-06-27 18:50:34,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:34,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:34,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:34,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:50:34,934 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 18:50:34,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:34,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1453891356, now seen corresponding path program 4 times [2024-06-27 18:50:34,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:34,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35655122] [2024-06-27 18:50:34,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:34,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:35,582 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 18:50:35,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:35,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35655122] [2024-06-27 18:50:35,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35655122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:35,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:35,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:50:35,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814439534] [2024-06-27 18:50:35,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:35,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:50:35,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:35,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:50:35,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:50:35,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:35,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 281 transitions, 4096 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:35,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:35,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:35,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:37,702 INFO L124 PetriNetUnfolderBase]: 8688/13127 cut-off events. [2024-06-27 18:50:37,702 INFO L125 PetriNetUnfolderBase]: For 273413/273415 co-relation queries the response was YES. [2024-06-27 18:50:37,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84555 conditions, 13127 events. 8688/13127 cut-off events. For 273413/273415 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 81527 event pairs, 2207 based on Foata normal form. 16/12955 useless extension candidates. Maximal degree in co-relation 84475. Up to 11240 conditions per place. [2024-06-27 18:50:38,043 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 279 selfloop transitions, 116 changer transitions 0/402 dead transitions. [2024-06-27 18:50:38,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 402 transitions, 6433 flow [2024-06-27 18:50:38,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:50:38,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:50:38,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-27 18:50:38,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5024154589371981 [2024-06-27 18:50:38,045 INFO L175 Difference]: Start difference. First operand has 177 places, 281 transitions, 4096 flow. Second operand 9 states and 208 transitions. [2024-06-27 18:50:38,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 402 transitions, 6433 flow [2024-06-27 18:50:38,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 402 transitions, 6091 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 18:50:38,642 INFO L231 Difference]: Finished difference. Result has 184 places, 337 transitions, 5288 flow [2024-06-27 18:50:38,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3855, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5288, PETRI_PLACES=184, PETRI_TRANSITIONS=337} [2024-06-27 18:50:38,642 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 132 predicate places. [2024-06-27 18:50:38,642 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 337 transitions, 5288 flow [2024-06-27 18:50:38,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:38,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:38,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:38,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:50:38,643 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 18:50:38,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:38,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1858371736, now seen corresponding path program 5 times [2024-06-27 18:50:38,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:38,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489275303] [2024-06-27 18:50:38,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:38,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:39,248 INFO 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 18:50:39,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:39,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489275303] [2024-06-27 18:50:39,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489275303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:39,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:39,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:50:39,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779655960] [2024-06-27 18:50:39,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:39,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:50:39,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:39,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:50:39,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:50:39,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:39,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 337 transitions, 5288 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:39,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:39,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:39,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:41,701 INFO L124 PetriNetUnfolderBase]: 9064/13669 cut-off events. [2024-06-27 18:50:41,701 INFO L125 PetriNetUnfolderBase]: For 310693/310703 co-relation queries the response was YES. [2024-06-27 18:50:41,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89689 conditions, 13669 events. 9064/13669 cut-off events. For 310693/310703 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 85363 event pairs, 2123 based on Foata normal form. 54/13535 useless extension candidates. Maximal degree in co-relation 89604. Up to 11490 conditions per place. [2024-06-27 18:50:41,832 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 226 selfloop transitions, 160 changer transitions 0/393 dead transitions. [2024-06-27 18:50:41,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 393 transitions, 6386 flow [2024-06-27 18:50:41,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:50:41,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:50:41,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 18:50:41,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-06-27 18:50:41,834 INFO L175 Difference]: Start difference. First operand has 184 places, 337 transitions, 5288 flow. Second operand 8 states and 196 transitions. [2024-06-27 18:50:41,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 393 transitions, 6386 flow [2024-06-27 18:50:42,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 393 transitions, 6330 flow, removed 27 selfloop flow, removed 1 redundant places. [2024-06-27 18:50:42,577 INFO L231 Difference]: Finished difference. Result has 191 places, 342 transitions, 5711 flow [2024-06-27 18:50:42,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5236, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5711, PETRI_PLACES=191, PETRI_TRANSITIONS=342} [2024-06-27 18:50:42,578 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 139 predicate places. [2024-06-27 18:50:42,578 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 342 transitions, 5711 flow [2024-06-27 18:50:42,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:42,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:42,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:42,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:50:42,578 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 18:50:42,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:42,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1858515886, now seen corresponding path program 6 times [2024-06-27 18:50:42,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:42,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404078874] [2024-06-27 18:50:42,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:42,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:43,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:43,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:43,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404078874] [2024-06-27 18:50:43,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404078874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:43,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:43,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:50:43,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27914657] [2024-06-27 18:50:43,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:43,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:50:43,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:43,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:50:43,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:50:43,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:43,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 342 transitions, 5711 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:43,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:43,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:43,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:45,712 INFO L124 PetriNetUnfolderBase]: 9288/14006 cut-off events. [2024-06-27 18:50:45,712 INFO L125 PetriNetUnfolderBase]: For 325462/325472 co-relation queries the response was YES. [2024-06-27 18:50:45,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93584 conditions, 14006 events. 9288/14006 cut-off events. For 325462/325472 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 87832 event pairs, 1844 based on Foata normal form. 46/13864 useless extension candidates. Maximal degree in co-relation 93496. Up to 12031 conditions per place. [2024-06-27 18:50:45,866 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 261 selfloop transitions, 133 changer transitions 0/401 dead transitions. [2024-06-27 18:50:45,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 401 transitions, 6845 flow [2024-06-27 18:50:45,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:50:45,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:50:45,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 18:50:45,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5407608695652174 [2024-06-27 18:50:45,868 INFO L175 Difference]: Start difference. First operand has 191 places, 342 transitions, 5711 flow. Second operand 8 states and 199 transitions. [2024-06-27 18:50:45,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 401 transitions, 6845 flow [2024-06-27 18:50:46,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 401 transitions, 6472 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-27 18:50:46,921 INFO L231 Difference]: Finished difference. Result has 193 places, 347 transitions, 5782 flow [2024-06-27 18:50:46,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5338, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5782, PETRI_PLACES=193, PETRI_TRANSITIONS=347} [2024-06-27 18:50:46,922 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 141 predicate places. [2024-06-27 18:50:46,922 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 347 transitions, 5782 flow [2024-06-27 18:50:46,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:46,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:46,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:46,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:50:46,922 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 18:50:46,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:46,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1448173344, now seen corresponding path program 1 times [2024-06-27 18:50:46,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:46,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6086968] [2024-06-27 18:50:46,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:46,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:47,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:47,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:47,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6086968] [2024-06-27 18:50:47,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6086968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:47,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:47,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:50:47,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332919510] [2024-06-27 18:50:47,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:47,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:50:47,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:47,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:50:47,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:50:47,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:47,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 347 transitions, 5782 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:47,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:47,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:47,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:50,489 INFO L124 PetriNetUnfolderBase]: 9356/14104 cut-off events. [2024-06-27 18:50:50,489 INFO L125 PetriNetUnfolderBase]: For 313997/314003 co-relation queries the response was YES. [2024-06-27 18:50:50,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93953 conditions, 14104 events. 9356/14104 cut-off events. For 313997/314003 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 88642 event pairs, 2179 based on Foata normal form. 12/13928 useless extension candidates. Maximal degree in co-relation 93864. Up to 12810 conditions per place. [2024-06-27 18:50:50,627 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 292 selfloop transitions, 97 changer transitions 0/396 dead transitions. [2024-06-27 18:50:50,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 396 transitions, 6868 flow [2024-06-27 18:50:50,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:50:50,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:50:50,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 18:50:50,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027173913043478 [2024-06-27 18:50:50,628 INFO L175 Difference]: Start difference. First operand has 193 places, 347 transitions, 5782 flow. Second operand 8 states and 185 transitions. [2024-06-27 18:50:50,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 396 transitions, 6868 flow [2024-06-27 18:50:51,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 396 transitions, 6591 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-27 18:50:51,610 INFO L231 Difference]: Finished difference. Result has 196 places, 352 transitions, 5868 flow [2024-06-27 18:50:51,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5505, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5868, PETRI_PLACES=196, PETRI_TRANSITIONS=352} [2024-06-27 18:50:51,611 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 144 predicate places. [2024-06-27 18:50:51,611 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 352 transitions, 5868 flow [2024-06-27 18:50:51,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:51,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:51,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:51,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:50:51,611 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 18:50:51,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:51,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1448165904, now seen corresponding path program 2 times [2024-06-27 18:50:51,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:51,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997206003] [2024-06-27 18:50:51,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:51,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:52,462 INFO 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 18:50:52,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:52,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997206003] [2024-06-27 18:50:52,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997206003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:52,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:52,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:50:52,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808704588] [2024-06-27 18:50:52,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:52,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:50:52,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:52,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:50:52,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:50:52,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:52,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 352 transitions, 5868 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:52,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:52,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:52,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:55,342 INFO L124 PetriNetUnfolderBase]: 9390/14154 cut-off events. [2024-06-27 18:50:55,342 INFO L125 PetriNetUnfolderBase]: For 318330/318336 co-relation queries the response was YES. [2024-06-27 18:50:55,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94116 conditions, 14154 events. 9390/14154 cut-off events. For 318330/318336 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 89052 event pairs, 2128 based on Foata normal form. 8/13974 useless extension candidates. Maximal degree in co-relation 94026. Up to 12640 conditions per place. [2024-06-27 18:50:55,494 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 289 selfloop transitions, 109 changer transitions 0/405 dead transitions. [2024-06-27 18:50:55,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 405 transitions, 7018 flow [2024-06-27 18:50:55,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:50:55,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:50:55,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 18:50:55,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027173913043478 [2024-06-27 18:50:55,495 INFO L175 Difference]: Start difference. First operand has 196 places, 352 transitions, 5868 flow. Second operand 8 states and 185 transitions. [2024-06-27 18:50:55,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 405 transitions, 7018 flow [2024-06-27 18:50:56,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 405 transitions, 6641 flow, removed 58 selfloop flow, removed 5 redundant places. [2024-06-27 18:50:56,520 INFO L231 Difference]: Finished difference. Result has 200 places, 361 transitions, 5956 flow [2024-06-27 18:50:56,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5491, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5956, PETRI_PLACES=200, PETRI_TRANSITIONS=361} [2024-06-27 18:50:56,520 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 148 predicate places. [2024-06-27 18:50:56,520 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 361 transitions, 5956 flow [2024-06-27 18:50:56,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:56,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:56,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:56,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:50:56,521 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 18:50:56,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:56,521 INFO L85 PathProgramCache]: Analyzing trace with hash -676710030, now seen corresponding path program 3 times [2024-06-27 18:50:56,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:56,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735107137] [2024-06-27 18:50:56,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:56,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:57,313 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 18:50:57,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:57,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735107137] [2024-06-27 18:50:57,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735107137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:57,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:57,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:50:57,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408467649] [2024-06-27 18:50:57,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:57,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:50:57,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:57,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:50:57,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:50:57,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:57,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 361 transitions, 5956 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:57,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:57,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:57,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:59,907 INFO L124 PetriNetUnfolderBase]: 9424/14234 cut-off events. [2024-06-27 18:50:59,908 INFO L125 PetriNetUnfolderBase]: For 332693/332701 co-relation queries the response was YES. [2024-06-27 18:51:00,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95413 conditions, 14234 events. 9424/14234 cut-off events. For 332693/332701 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 89067 event pairs, 3058 based on Foata normal form. 12/14058 useless extension candidates. Maximal degree in co-relation 95321. Up to 13467 conditions per place. [2024-06-27 18:51:00,075 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 357 selfloop transitions, 39 changer transitions 0/403 dead transitions. [2024-06-27 18:51:00,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 403 transitions, 6966 flow [2024-06-27 18:51:00,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:51:00,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:51:00,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-27 18:51:00,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48097826086956524 [2024-06-27 18:51:00,076 INFO L175 Difference]: Start difference. First operand has 200 places, 361 transitions, 5956 flow. Second operand 8 states and 177 transitions. [2024-06-27 18:51:00,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 403 transitions, 6966 flow [2024-06-27 18:51:01,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 403 transitions, 6667 flow, removed 55 selfloop flow, removed 5 redundant places. [2024-06-27 18:51:01,020 INFO L231 Difference]: Finished difference. Result has 203 places, 364 transitions, 5835 flow [2024-06-27 18:51:01,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5657, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5835, PETRI_PLACES=203, PETRI_TRANSITIONS=364} [2024-06-27 18:51:01,021 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 151 predicate places. [2024-06-27 18:51:01,021 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 364 transitions, 5835 flow [2024-06-27 18:51:01,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:01,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:01,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:01,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:51:01,021 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:01,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:01,021 INFO L85 PathProgramCache]: Analyzing trace with hash -392496450, now seen corresponding path program 4 times [2024-06-27 18:51:01,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:01,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126967372] [2024-06-27 18:51:01,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:01,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:01,781 INFO 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 18:51:01,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:01,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126967372] [2024-06-27 18:51:01,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126967372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:01,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:01,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:51:01,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589741712] [2024-06-27 18:51:01,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:01,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:51:01,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:01,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:51:01,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:51:01,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:51:01,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 364 transitions, 5835 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:01,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:01,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:51:01,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:04,241 INFO L124 PetriNetUnfolderBase]: 9429/14238 cut-off events. [2024-06-27 18:51:04,241 INFO L125 PetriNetUnfolderBase]: For 340043/340051 co-relation queries the response was YES. [2024-06-27 18:51:04,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95155 conditions, 14238 events. 9429/14238 cut-off events. For 340043/340051 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 89173 event pairs, 3046 based on Foata normal form. 12/14062 useless extension candidates. Maximal degree in co-relation 95062. Up to 13293 conditions per place. [2024-06-27 18:51:04,396 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 351 selfloop transitions, 57 changer transitions 0/415 dead transitions. [2024-06-27 18:51:04,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 415 transitions, 7199 flow [2024-06-27 18:51:04,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:51:04,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:51:04,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-27 18:51:04,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49184782608695654 [2024-06-27 18:51:04,398 INFO L175 Difference]: Start difference. First operand has 203 places, 364 transitions, 5835 flow. Second operand 8 states and 181 transitions. [2024-06-27 18:51:04,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 415 transitions, 7199 flow [2024-06-27 18:51:05,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 415 transitions, 7073 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-27 18:51:05,387 INFO L231 Difference]: Finished difference. Result has 209 places, 374 transitions, 6154 flow [2024-06-27 18:51:05,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5709, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6154, PETRI_PLACES=209, PETRI_TRANSITIONS=374} [2024-06-27 18:51:05,388 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 157 predicate places. [2024-06-27 18:51:05,388 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 374 transitions, 6154 flow [2024-06-27 18:51:05,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:05,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:05,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:05,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:51:05,388 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 18:51:05,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:05,389 INFO L85 PathProgramCache]: Analyzing trace with hash -382405950, now seen corresponding path program 5 times [2024-06-27 18:51:05,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:05,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768299482] [2024-06-27 18:51:05,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:05,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:06,054 INFO 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 18:51:06,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:06,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768299482] [2024-06-27 18:51:06,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768299482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:06,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:06,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:51:06,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327471003] [2024-06-27 18:51:06,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:06,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:51:06,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:06,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:51:06,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:51:06,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:51:06,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 374 transitions, 6154 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:06,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:06,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:51:06,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:08,633 INFO L124 PetriNetUnfolderBase]: 9426/14233 cut-off events. [2024-06-27 18:51:08,633 INFO L125 PetriNetUnfolderBase]: For 350482/350490 co-relation queries the response was YES. [2024-06-27 18:51:08,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95901 conditions, 14233 events. 9426/14233 cut-off events. For 350482/350490 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 89072 event pairs, 2964 based on Foata normal form. 12/14057 useless extension candidates. Maximal degree in co-relation 95805. Up to 13462 conditions per place. [2024-06-27 18:51:08,809 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 370 selfloop transitions, 38 changer transitions 0/415 dead transitions. [2024-06-27 18:51:08,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 415 transitions, 7154 flow [2024-06-27 18:51:08,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:51:08,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:51:08,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-27 18:51:08,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-27 18:51:08,810 INFO L175 Difference]: Start difference. First operand has 209 places, 374 transitions, 6154 flow. Second operand 8 states and 176 transitions. [2024-06-27 18:51:08,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 415 transitions, 7154 flow [2024-06-27 18:51:09,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 415 transitions, 7019 flow, removed 51 selfloop flow, removed 3 redundant places. [2024-06-27 18:51:09,828 INFO L231 Difference]: Finished difference. Result has 214 places, 377 transitions, 6179 flow [2024-06-27 18:51:09,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6019, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6179, PETRI_PLACES=214, PETRI_TRANSITIONS=377} [2024-06-27 18:51:09,829 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 162 predicate places. [2024-06-27 18:51:09,829 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 377 transitions, 6179 flow [2024-06-27 18:51:09,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:09,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:09,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:09,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:51:09,830 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 18:51:09,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:09,830 INFO L85 PathProgramCache]: Analyzing trace with hash 363239746, now seen corresponding path program 6 times [2024-06-27 18:51:09,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:09,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357713334] [2024-06-27 18:51:09,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:09,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:09,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:10,674 INFO 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 18:51:10,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:10,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357713334] [2024-06-27 18:51:10,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357713334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:10,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:10,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:51:10,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458203502] [2024-06-27 18:51:10,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:10,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:51:10,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:10,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:51:10,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:51:10,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:51:10,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 377 transitions, 6179 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:10,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:10,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:51:10,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:13,268 INFO L124 PetriNetUnfolderBase]: 9418/14383 cut-off events. [2024-06-27 18:51:13,268 INFO L125 PetriNetUnfolderBase]: For 359820/359828 co-relation queries the response was YES. [2024-06-27 18:51:13,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96524 conditions, 14383 events. 9418/14383 cut-off events. For 359820/359828 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 91287 event pairs, 3039 based on Foata normal form. 12/14153 useless extension candidates. Maximal degree in co-relation 96426. Up to 13388 conditions per place. [2024-06-27 18:51:13,428 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 353 selfloop transitions, 59 changer transitions 0/419 dead transitions. [2024-06-27 18:51:13,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 419 transitions, 7235 flow [2024-06-27 18:51:13,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:51:13,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:51:13,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-27 18:51:13,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-27 18:51:13,429 INFO L175 Difference]: Start difference. First operand has 214 places, 377 transitions, 6179 flow. Second operand 8 states and 176 transitions. [2024-06-27 18:51:13,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 419 transitions, 7235 flow [2024-06-27 18:51:14,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 419 transitions, 7054 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-27 18:51:14,404 INFO L231 Difference]: Finished difference. Result has 215 places, 380 transitions, 6238 flow [2024-06-27 18:51:14,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5998, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6238, PETRI_PLACES=215, PETRI_TRANSITIONS=380} [2024-06-27 18:51:14,405 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 163 predicate places. [2024-06-27 18:51:14,405 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 380 transitions, 6238 flow [2024-06-27 18:51:14,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:14,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:14,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:14,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:51:14,405 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:14,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:14,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1425616756, now seen corresponding path program 1 times [2024-06-27 18:51:14,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:14,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921741396] [2024-06-27 18:51:14,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:14,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:14,976 INFO 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 18:51:14,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:14,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921741396] [2024-06-27 18:51:14,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921741396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:14,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:14,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:51:14,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252300507] [2024-06-27 18:51:14,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:14,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:51:14,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:14,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:51:14,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:51:15,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:51:15,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 380 transitions, 6238 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:15,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:15,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:51:15,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:17,546 INFO L124 PetriNetUnfolderBase]: 9547/14536 cut-off events. [2024-06-27 18:51:17,546 INFO L125 PetriNetUnfolderBase]: For 371575/371590 co-relation queries the response was YES. [2024-06-27 18:51:17,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98436 conditions, 14536 events. 9547/14536 cut-off events. For 371575/371590 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 92749 event pairs, 2140 based on Foata normal form. 20/14308 useless extension candidates. Maximal degree in co-relation 98337. Up to 12859 conditions per place. [2024-06-27 18:51:17,741 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 385 selfloop transitions, 50 changer transitions 0/442 dead transitions. [2024-06-27 18:51:17,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 442 transitions, 7776 flow [2024-06-27 18:51:17,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:51:17,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:51:17,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-27 18:51:17,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-27 18:51:17,742 INFO L175 Difference]: Start difference. First operand has 215 places, 380 transitions, 6238 flow. Second operand 6 states and 150 transitions. [2024-06-27 18:51:17,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 442 transitions, 7776 flow [2024-06-27 18:51:18,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 442 transitions, 7584 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-27 18:51:18,944 INFO L231 Difference]: Finished difference. Result has 217 places, 392 transitions, 6444 flow [2024-06-27 18:51:18,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6052, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6444, PETRI_PLACES=217, PETRI_TRANSITIONS=392} [2024-06-27 18:51:18,944 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 165 predicate places. [2024-06-27 18:51:18,945 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 392 transitions, 6444 flow [2024-06-27 18:51:18,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:18,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:18,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:18,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:51:18,945 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 18:51:18,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:18,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1900397258, now seen corresponding path program 7 times [2024-06-27 18:51:18,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:18,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884563023] [2024-06-27 18:51:18,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:18,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:19,439 INFO 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 18:51:19,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:19,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884563023] [2024-06-27 18:51:19,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884563023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:19,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:19,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:51:19,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072806402] [2024-06-27 18:51:19,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:19,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:51:19,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:19,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:51:19,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:51:19,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:51:19,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 392 transitions, 6444 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:19,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:19,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:51:19,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:22,893 INFO L124 PetriNetUnfolderBase]: 11210/16962 cut-off events. [2024-06-27 18:51:22,893 INFO L125 PetriNetUnfolderBase]: For 461765/461781 co-relation queries the response was YES. [2024-06-27 18:51:23,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121550 conditions, 16962 events. 11210/16962 cut-off events. For 461765/461781 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 108943 event pairs, 2291 based on Foata normal form. 26/16748 useless extension candidates. Maximal degree in co-relation 121448. Up to 12865 conditions per place. [2024-06-27 18:51:23,115 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 329 selfloop transitions, 274 changer transitions 0/610 dead transitions. [2024-06-27 18:51:23,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 610 transitions, 11325 flow [2024-06-27 18:51:23,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:51:23,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:51:23,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-27 18:51:23,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5458937198067633 [2024-06-27 18:51:23,117 INFO L175 Difference]: Start difference. First operand has 217 places, 392 transitions, 6444 flow. Second operand 9 states and 226 transitions. [2024-06-27 18:51:23,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 610 transitions, 11325 flow [2024-06-27 18:51:24,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 610 transitions, 11259 flow, removed 32 selfloop flow, removed 1 redundant places. [2024-06-27 18:51:24,949 INFO L231 Difference]: Finished difference. Result has 229 places, 522 transitions, 10170 flow [2024-06-27 18:51:24,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6378, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10170, PETRI_PLACES=229, PETRI_TRANSITIONS=522} [2024-06-27 18:51:24,950 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 177 predicate places. [2024-06-27 18:51:24,950 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 522 transitions, 10170 flow [2024-06-27 18:51:24,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:24,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:24,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:24,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:51:24,950 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:24,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:24,950 INFO L85 PathProgramCache]: Analyzing trace with hash -81370331, now seen corresponding path program 1 times [2024-06-27 18:51:24,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:24,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520628609] [2024-06-27 18:51:24,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:24,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:25,463 INFO 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 18:51:25,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:25,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520628609] [2024-06-27 18:51:25,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520628609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:25,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:25,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:51:25,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415629918] [2024-06-27 18:51:25,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:25,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:51:25,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:25,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:51:25,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:51:25,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:51:25,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 522 transitions, 10170 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:25,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:25,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:51:25,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:29,418 INFO L124 PetriNetUnfolderBase]: 11250/17301 cut-off events. [2024-06-27 18:51:29,418 INFO L125 PetriNetUnfolderBase]: For 481927/481927 co-relation queries the response was YES. [2024-06-27 18:51:29,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127082 conditions, 17301 events. 11250/17301 cut-off events. For 481927/481927 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 112833 event pairs, 3731 based on Foata normal form. 2/16970 useless extension candidates. Maximal degree in co-relation 126973. Up to 16031 conditions per place. [2024-06-27 18:51:29,615 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 536 selfloop transitions, 36 changer transitions 0/579 dead transitions. [2024-06-27 18:51:29,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 579 transitions, 11895 flow [2024-06-27 18:51:29,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:51:29,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:51:29,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-27 18:51:29,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48757763975155277 [2024-06-27 18:51:29,616 INFO L175 Difference]: Start difference. First operand has 229 places, 522 transitions, 10170 flow. Second operand 7 states and 157 transitions. [2024-06-27 18:51:29,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 579 transitions, 11895 flow [2024-06-27 18:51:30,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 579 transitions, 11808 flow, removed 31 selfloop flow, removed 2 redundant places. [2024-06-27 18:51:30,981 INFO L231 Difference]: Finished difference. Result has 237 places, 539 transitions, 10423 flow [2024-06-27 18:51:30,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10083, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10423, PETRI_PLACES=237, PETRI_TRANSITIONS=539} [2024-06-27 18:51:30,982 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 185 predicate places. [2024-06-27 18:51:30,982 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 539 transitions, 10423 flow [2024-06-27 18:51:30,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:30,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:30,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:30,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:51:30,983 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:30,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:30,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1988890991, now seen corresponding path program 2 times [2024-06-27 18:51:30,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:30,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062033416] [2024-06-27 18:51:30,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:30,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:31,617 INFO 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 18:51:31,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:31,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062033416] [2024-06-27 18:51:31,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062033416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:31,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:31,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:51:31,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156180171] [2024-06-27 18:51:31,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:31,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:51:31,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:31,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:51:31,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:51:31,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:51:31,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 539 transitions, 10423 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:31,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:31,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:51:31,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:35,783 INFO L124 PetriNetUnfolderBase]: 11430/17559 cut-off events. [2024-06-27 18:51:35,783 INFO L125 PetriNetUnfolderBase]: For 492943/492943 co-relation queries the response was YES. [2024-06-27 18:51:35,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129618 conditions, 17559 events. 11430/17559 cut-off events. For 492943/492943 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 114619 event pairs, 3727 based on Foata normal form. 6/17226 useless extension candidates. Maximal degree in co-relation 129504. Up to 16195 conditions per place. [2024-06-27 18:51:35,989 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 535 selfloop transitions, 51 changer transitions 0/593 dead transitions. [2024-06-27 18:51:35,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 593 transitions, 12091 flow [2024-06-27 18:51:35,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:51:35,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:51:35,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-27 18:51:35,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937888198757764 [2024-06-27 18:51:35,991 INFO L175 Difference]: Start difference. First operand has 237 places, 539 transitions, 10423 flow. Second operand 7 states and 159 transitions. [2024-06-27 18:51:35,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 593 transitions, 12091 flow [2024-06-27 18:51:37,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 593 transitions, 12071 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-27 18:51:37,540 INFO L231 Difference]: Finished difference. Result has 244 places, 557 transitions, 10827 flow [2024-06-27 18:51:37,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10407, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10827, PETRI_PLACES=244, PETRI_TRANSITIONS=557} [2024-06-27 18:51:37,540 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 192 predicate places. [2024-06-27 18:51:37,541 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 557 transitions, 10827 flow [2024-06-27 18:51:37,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:37,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:37,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:37,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:51:37,541 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:37,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:37,542 INFO L85 PathProgramCache]: Analyzing trace with hash -650198989, now seen corresponding path program 3 times [2024-06-27 18:51:37,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:37,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120851532] [2024-06-27 18:51:37,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:37,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:38,140 INFO 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 18:51:38,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:38,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120851532] [2024-06-27 18:51:38,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120851532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:38,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:38,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:51:38,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261001101] [2024-06-27 18:51:38,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:38,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:51:38,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:38,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:51:38,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:51:38,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:51:38,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 557 transitions, 10827 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:38,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:38,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:51:38,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:42,354 INFO L124 PetriNetUnfolderBase]: 11524/17687 cut-off events. [2024-06-27 18:51:42,354 INFO L125 PetriNetUnfolderBase]: For 511075/511075 co-relation queries the response was YES. [2024-06-27 18:51:42,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132305 conditions, 17687 events. 11524/17687 cut-off events. For 511075/511075 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 115443 event pairs, 3728 based on Foata normal form. 6/17354 useless extension candidates. Maximal degree in co-relation 132187. Up to 16200 conditions per place. [2024-06-27 18:51:42,569 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 522 selfloop transitions, 67 changer transitions 0/596 dead transitions. [2024-06-27 18:51:42,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 596 transitions, 12336 flow [2024-06-27 18:51:42,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:51:42,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:51:42,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-27 18:51:42,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5144927536231884 [2024-06-27 18:51:42,570 INFO L175 Difference]: Start difference. First operand has 244 places, 557 transitions, 10827 flow. Second operand 6 states and 142 transitions. [2024-06-27 18:51:42,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 596 transitions, 12336 flow [2024-06-27 18:51:44,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 596 transitions, 12139 flow, removed 56 selfloop flow, removed 4 redundant places. [2024-06-27 18:51:44,198 INFO L231 Difference]: Finished difference. Result has 246 places, 565 transitions, 10967 flow [2024-06-27 18:51:44,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10634, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10967, PETRI_PLACES=246, PETRI_TRANSITIONS=565} [2024-06-27 18:51:44,199 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 194 predicate places. [2024-06-27 18:51:44,199 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 565 transitions, 10967 flow [2024-06-27 18:51:44,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:44,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:44,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:44,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:51:44,199 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:44,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:44,200 INFO L85 PathProgramCache]: Analyzing trace with hash -680339545, now seen corresponding path program 1 times [2024-06-27 18:51:44,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:44,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339369501] [2024-06-27 18:51:44,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:44,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:45,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:45,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:45,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339369501] [2024-06-27 18:51:45,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339369501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:45,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:45,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:51:45,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307060747] [2024-06-27 18:51:45,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:45,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:51:45,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:45,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:51:45,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:51:45,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:51:45,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 565 transitions, 10967 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:45,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:45,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:51:45,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:49,434 INFO L124 PetriNetUnfolderBase]: 11519/17656 cut-off events. [2024-06-27 18:51:49,434 INFO L125 PetriNetUnfolderBase]: For 521125/521125 co-relation queries the response was YES. [2024-06-27 18:51:49,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133369 conditions, 17656 events. 11519/17656 cut-off events. For 521125/521125 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 114815 event pairs, 3759 based on Foata normal form. 2/17327 useless extension candidates. Maximal degree in co-relation 133250. Up to 16487 conditions per place. [2024-06-27 18:51:49,658 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 560 selfloop transitions, 19 changer transitions 0/586 dead transitions. [2024-06-27 18:51:49,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 586 transitions, 12317 flow [2024-06-27 18:51:49,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:51:49,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:51:49,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-06-27 18:51:49,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-27 18:51:49,659 INFO L175 Difference]: Start difference. First operand has 246 places, 565 transitions, 10967 flow. Second operand 5 states and 110 transitions. [2024-06-27 18:51:49,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 586 transitions, 12317 flow [2024-06-27 18:51:51,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 586 transitions, 12131 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-27 18:51:51,294 INFO L231 Difference]: Finished difference. Result has 247 places, 567 transitions, 10875 flow [2024-06-27 18:51:51,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10787, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10875, PETRI_PLACES=247, PETRI_TRANSITIONS=567} [2024-06-27 18:51:51,295 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 195 predicate places. [2024-06-27 18:51:51,295 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 567 transitions, 10875 flow [2024-06-27 18:51:51,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:51,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:51,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:51,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:51:51,296 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 18:51:51,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:51,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1641028968, now seen corresponding path program 1 times [2024-06-27 18:51:51,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:51,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693341350] [2024-06-27 18:51:51,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:51,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:52,344 INFO 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 18:51:52,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:52,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693341350] [2024-06-27 18:51:52,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693341350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:52,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:52,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:51:52,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384201150] [2024-06-27 18:51:52,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:52,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:51:52,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:52,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:51:52,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:51:52,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:51:52,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 567 transitions, 10875 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:52,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:52,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:51:52,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:56,491 INFO L124 PetriNetUnfolderBase]: 11499/17326 cut-off events. [2024-06-27 18:51:56,491 INFO L125 PetriNetUnfolderBase]: For 510643/510678 co-relation queries the response was YES. [2024-06-27 18:51:56,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130997 conditions, 17326 events. 11499/17326 cut-off events. For 510643/510678 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 110987 event pairs, 2380 based on Foata normal form. 38/17123 useless extension candidates. Maximal degree in co-relation 130877. Up to 14306 conditions per place. [2024-06-27 18:51:56,708 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 368 selfloop transitions, 255 changer transitions 0/630 dead transitions. [2024-06-27 18:51:56,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 630 transitions, 12467 flow [2024-06-27 18:51:56,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:51:56,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:51:56,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-27 18:51:56,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5241545893719807 [2024-06-27 18:51:56,709 INFO L175 Difference]: Start difference. First operand has 247 places, 567 transitions, 10875 flow. Second operand 9 states and 217 transitions. [2024-06-27 18:51:56,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 630 transitions, 12467 flow [2024-06-27 18:51:58,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 630 transitions, 12333 flow, removed 50 selfloop flow, removed 3 redundant places. [2024-06-27 18:51:58,490 INFO L231 Difference]: Finished difference. Result has 253 places, 569 transitions, 11326 flow [2024-06-27 18:51:58,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10761, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11326, PETRI_PLACES=253, PETRI_TRANSITIONS=569} [2024-06-27 18:51:58,490 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 201 predicate places. [2024-06-27 18:51:58,490 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 569 transitions, 11326 flow [2024-06-27 18:51:58,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:58,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:58,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:58,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:51:58,491 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 18:51:58,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:58,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1779603002, now seen corresponding path program 2 times [2024-06-27 18:51:58,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:58,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202395052] [2024-06-27 18:51:58,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:58,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:59,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:59,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:59,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202395052] [2024-06-27 18:51:59,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202395052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:59,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:59,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:51:59,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746941701] [2024-06-27 18:51:59,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:59,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:51:59,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:59,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:51:59,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:51:59,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:51:59,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 569 transitions, 11326 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:59,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:59,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:51:59,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:03,979 INFO L124 PetriNetUnfolderBase]: 11743/17712 cut-off events. [2024-06-27 18:52:03,980 INFO L125 PetriNetUnfolderBase]: For 562417/562431 co-relation queries the response was YES. [2024-06-27 18:52:04,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136020 conditions, 17712 events. 11743/17712 cut-off events. For 562417/562431 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 114122 event pairs, 2379 based on Foata normal form. 40/17512 useless extension candidates. Maximal degree in co-relation 135899. Up to 14164 conditions per place. [2024-06-27 18:52:04,225 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 355 selfloop transitions, 277 changer transitions 0/639 dead transitions. [2024-06-27 18:52:04,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 639 transitions, 13138 flow [2024-06-27 18:52:04,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:52:04,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:52:04,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-27 18:52:04,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5265700483091788 [2024-06-27 18:52:04,226 INFO L175 Difference]: Start difference. First operand has 253 places, 569 transitions, 11326 flow. Second operand 9 states and 218 transitions. [2024-06-27 18:52:04,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 639 transitions, 13138 flow