./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe011_power.opt_pso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/safe011_power.opt_pso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe011_power.opt_pso.opt.i ./goblint.2024-06-19_11-23-25.files/protection/safe011_power.opt_pso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:53:53,634 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:53:53,670 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:53:53,673 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:53:53,674 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:53:53,688 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:53:53,689 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:53:53,689 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:53:53,690 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:53:53,690 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:53:53,690 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:53:53,691 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:53:53,691 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:53:53,691 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:53:53,692 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:53:53,692 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:53:53,692 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:53:53,692 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:53:53,693 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:53:53,693 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:53:53,693 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:53:53,694 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:53:53,694 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:53:53,694 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:53:53,694 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:53:53,695 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:53:53,695 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:53:53,695 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:53:53,695 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:53:53,696 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:53:53,696 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:53:53,696 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:53:53,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:53:53,696 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:53:53,697 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:53:53,697 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:53:53,697 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:53:53,697 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:53:53,697 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:53:53,698 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:53:53,698 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:53:53,698 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:53:53,698 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:53:53,698 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:53:53,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:53:53,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:53:53,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:53:53,879 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:53:53,879 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:53:53,880 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_power.opt_pso.opt.i [2024-06-27 18:53:54,918 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:53:55,128 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:53:55,144 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_power.opt_pso.opt.i [2024-06-27 18:53:55,162 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c17834f29/fcbc0f21268049e4a0555594569ba338/FLAGbf4a1a4d3 [2024-06-27 18:53:55,172 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c17834f29/fcbc0f21268049e4a0555594569ba338 [2024-06-27 18:53:55,174 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:53:55,179 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:53:55,179 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/safe011_power.opt_pso.opt.yml/witness.yml [2024-06-27 18:53:55,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:53:55,344 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:53:55,345 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:53:55,345 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:53:55,348 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:53:55,350 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:53:55" (1/2) ... [2024-06-27 18:53:55,351 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73036598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:53:55, skipping insertion in model container [2024-06-27 18:53:55,351 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:53:55" (1/2) ... [2024-06-27 18:53:55,363 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@931b540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:53:55, skipping insertion in model container [2024-06-27 18:53:55,364 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:53:55" (2/2) ... [2024-06-27 18:53:55,364 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73036598 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:53:55, skipping insertion in model container [2024-06-27 18:53:55,365 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:53:55" (2/2) ... [2024-06-27 18:53:55,365 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:53:55,432 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:53:55,434 INFO L97 edCorrectnessWitness]: Location invariant before [L824-L824] ((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0) [2024-06-27 18:53:55,434 INFO L97 edCorrectnessWitness]: Location invariant before [L823-L823] ((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0) [2024-06-27 18:53:55,434 INFO L97 edCorrectnessWitness]: Location invariant before [L821-L821] ((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0) [2024-06-27 18:53:55,434 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:53:55,434 INFO L106 edCorrectnessWitness]: ghost_update [L819-L819] multithreaded = 1; [2024-06-27 18:53:55,473 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:53:55,606 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/safe011_power.opt_pso.opt.i[959,972] [2024-06-27 18:53:55,738 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:53:55,746 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:53:55,778 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/safe011_power.opt_pso.opt.i[959,972] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:53:55,860 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:53:55,906 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:53:55,907 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:53:55 WrapperNode [2024-06-27 18:53:55,907 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:53:55,909 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:53:55,909 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:53:55,909 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:53:55,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:53:55" (1/1) ... [2024-06-27 18:53:55,941 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:53:55" (1/1) ... [2024-06-27 18:53:55,989 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 139 [2024-06-27 18:53:55,990 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:53:55,990 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:53:55,990 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:53:55,990 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:53:55,999 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:53:55" (1/1) ... [2024-06-27 18:53:55,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:53:55" (1/1) ... [2024-06-27 18:53:56,008 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:53:55" (1/1) ... [2024-06-27 18:53:56,024 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 18:53:56,024 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:53:55" (1/1) ... [2024-06-27 18:53:56,025 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:53:55" (1/1) ... [2024-06-27 18:53:56,034 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:53:55" (1/1) ... [2024-06-27 18:53:56,043 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:53:55" (1/1) ... [2024-06-27 18:53:56,045 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:53:55" (1/1) ... [2024-06-27 18:53:56,046 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:53:55" (1/1) ... [2024-06-27 18:53:56,049 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:53:56,050 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:53:56,050 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:53:56,050 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:53:56,051 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:53:55" (1/1) ... [2024-06-27 18:53:56,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:53:56,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:53:56,074 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 18:53:56,128 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 18:53:56,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:53:56,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:53:56,141 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:53:56,142 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:53:56,142 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:53:56,142 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:53:56,142 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:53:56,142 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:53:56,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:53:56,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:53:56,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:53:56,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:53:56,145 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 18:53:56,283 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:53:56,285 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:53:56,537 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:53:56,537 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:53:56,659 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:53:56,660 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:53:56,660 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:53:56 BoogieIcfgContainer [2024-06-27 18:53:56,660 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:53:56,662 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:53:56,662 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:53:56,664 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:53:56,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:53:55" (1/4) ... [2024-06-27 18:53:56,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b33dd4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:53:56, skipping insertion in model container [2024-06-27 18:53:56,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:53:55" (2/4) ... [2024-06-27 18:53:56,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b33dd4a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:53:56, skipping insertion in model container [2024-06-27 18:53:56,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:53:55" (3/4) ... [2024-06-27 18:53:56,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b33dd4a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:53:56, skipping insertion in model container [2024-06-27 18:53:56,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:53:56" (4/4) ... [2024-06-27 18:53:56,668 INFO L112 eAbstractionObserver]: Analyzing ICFG safe011_power.opt_pso.opt.i [2024-06-27 18:53:56,681 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:53:56,682 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:53:56,682 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:53:56,777 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:53:56,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 18:53:56,858 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-27 18:53:56,859 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:53:56,861 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 5. Compared 73 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 18:53:56,861 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 18:53:56,863 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 43 transitions, 95 flow [2024-06-27 18:53:56,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:53:56,875 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;@713ec677, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:53:56,875 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:53:56,878 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:53:56,879 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:53:56,879 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:53:56,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:56,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:53:56,880 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:56,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:56,884 INFO L85 PathProgramCache]: Analyzing trace with hash 351296548, now seen corresponding path program 1 times [2024-06-27 18:53:56,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:56,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825169293] [2024-06-27 18:53:56,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:56,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:57,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:57,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825169293] [2024-06-27 18:53:57,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825169293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:57,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:57,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:53:57,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315759464] [2024-06-27 18:53:57,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:57,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:53:57,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:57,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:53:57,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:53:57,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:53:57,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:57,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:57,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:53:57,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:58,362 INFO L124 PetriNetUnfolderBase]: 4271/6151 cut-off events. [2024-06-27 18:53:58,363 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-06-27 18:53:58,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12395 conditions, 6151 events. 4271/6151 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 33320 event pairs, 2519 based on Foata normal form. 211/6047 useless extension candidates. Maximal degree in co-relation 12383. Up to 6128 conditions per place. [2024-06-27 18:53:58,394 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 43 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-27 18:53:58,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 227 flow [2024-06-27 18:53:58,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:53:58,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:53:58,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-06-27 18:53:58,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-27 18:53:58,406 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 95 flow. Second operand 3 states and 92 transitions. [2024-06-27 18:53:58,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 227 flow [2024-06-27 18:53:58,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 222 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:53:58,413 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 127 flow [2024-06-27 18:53:58,415 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 18:53:58,418 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-06-27 18:53:58,418 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 127 flow [2024-06-27 18:53:58,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:58,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:58,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:58,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:53:58,419 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:58,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:58,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1706182541, now seen corresponding path program 1 times [2024-06-27 18:53:58,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:58,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685099130] [2024-06-27 18:53:58,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:58,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:58,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:58,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:58,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685099130] [2024-06-27 18:53:58,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685099130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:58,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:58,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:53:58,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104673138] [2024-06-27 18:53:58,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:58,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:53:58,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:58,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:53:58,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:53:58,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:53:58,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:58,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:58,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:53:58,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:59,496 INFO L124 PetriNetUnfolderBase]: 4323/6337 cut-off events. [2024-06-27 18:53:59,497 INFO L125 PetriNetUnfolderBase]: For 897/912 co-relation queries the response was YES. [2024-06-27 18:53:59,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14133 conditions, 6337 events. 4323/6337 cut-off events. For 897/912 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 35325 event pairs, 2312 based on Foata normal form. 8/6023 useless extension candidates. Maximal degree in co-relation 14121. Up to 6074 conditions per place. [2024-06-27 18:53:59,530 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 59 selfloop transitions, 14 changer transitions 0/83 dead transitions. [2024-06-27 18:53:59,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 83 transitions, 369 flow [2024-06-27 18:53:59,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:53:59,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:53:59,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-06-27 18:53:59,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6793478260869565 [2024-06-27 18:53:59,532 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 127 flow. Second operand 4 states and 125 transitions. [2024-06-27 18:53:59,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 83 transitions, 369 flow [2024-06-27 18:53:59,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 83 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:53:59,534 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 217 flow [2024-06-27 18:53:59,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=217, PETRI_PLACES=56, PETRI_TRANSITIONS=56} [2024-06-27 18:53:59,535 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2024-06-27 18:53:59,535 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 217 flow [2024-06-27 18:53:59,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:59,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:59,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:59,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:53:59,536 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:59,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:59,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1352050515, now seen corresponding path program 1 times [2024-06-27 18:53:59,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:59,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703654863] [2024-06-27 18:53:59,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:59,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:59,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:59,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:59,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703654863] [2024-06-27 18:53:59,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703654863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:59,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:59,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:53:59,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748078898] [2024-06-27 18:53:59,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:59,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:53:59,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:59,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:53:59,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:53:59,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:53:59,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:59,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:59,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:53:59,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:00,545 INFO L124 PetriNetUnfolderBase]: 4383/6931 cut-off events. [2024-06-27 18:54:00,546 INFO L125 PetriNetUnfolderBase]: For 3323/3359 co-relation queries the response was YES. [2024-06-27 18:54:00,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17172 conditions, 6931 events. 4383/6931 cut-off events. For 3323/3359 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 42771 event pairs, 2000 based on Foata normal form. 16/6435 useless extension candidates. Maximal degree in co-relation 17157. Up to 6062 conditions per place. [2024-06-27 18:54:00,583 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 80 selfloop transitions, 25 changer transitions 0/115 dead transitions. [2024-06-27 18:54:00,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 115 transitions, 647 flow [2024-06-27 18:54:00,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:54:00,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:54:00,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-06-27 18:54:00,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6652173913043479 [2024-06-27 18:54:00,585 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 217 flow. Second operand 5 states and 153 transitions. [2024-06-27 18:54:00,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 115 transitions, 647 flow [2024-06-27 18:54:00,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 115 transitions, 635 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-27 18:54:00,591 INFO L231 Difference]: Finished difference. Result has 63 places, 80 transitions, 456 flow [2024-06-27 18:54:00,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=456, PETRI_PLACES=63, PETRI_TRANSITIONS=80} [2024-06-27 18:54:00,592 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 11 predicate places. [2024-06-27 18:54:00,592 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 80 transitions, 456 flow [2024-06-27 18:54:00,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:00,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:00,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:00,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:54:00,593 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:00,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:00,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1359446230, now seen corresponding path program 1 times [2024-06-27 18:54:00,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:00,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862770268] [2024-06-27 18:54:00,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:00,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:00,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:00,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:00,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862770268] [2024-06-27 18:54:00,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862770268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:00,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:00,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:54:00,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378110272] [2024-06-27 18:54:00,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:00,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:54:00,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:00,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:54:00,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:54:00,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 46 [2024-06-27 18:54:00,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 80 transitions, 456 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:00,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:00,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 46 [2024-06-27 18:54:00,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:00,923 INFO L124 PetriNetUnfolderBase]: 1424/2833 cut-off events. [2024-06-27 18:54:00,923 INFO L125 PetriNetUnfolderBase]: For 2302/2509 co-relation queries the response was YES. [2024-06-27 18:54:00,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6816 conditions, 2833 events. 1424/2833 cut-off events. For 2302/2509 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 20845 event pairs, 457 based on Foata normal form. 48/2657 useless extension candidates. Maximal degree in co-relation 6796. Up to 1734 conditions per place. [2024-06-27 18:54:00,942 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 35 selfloop transitions, 10 changer transitions 0/84 dead transitions. [2024-06-27 18:54:00,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 84 transitions, 497 flow [2024-06-27 18:54:00,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:54:00,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:54:00,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-06-27 18:54:00,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7536231884057971 [2024-06-27 18:54:00,945 INFO L175 Difference]: Start difference. First operand has 63 places, 80 transitions, 456 flow. Second operand 3 states and 104 transitions. [2024-06-27 18:54:00,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 84 transitions, 497 flow [2024-06-27 18:54:00,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 84 transitions, 487 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-06-27 18:54:00,951 INFO L231 Difference]: Finished difference. Result has 64 places, 71 transitions, 387 flow [2024-06-27 18:54:00,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=387, PETRI_PLACES=64, PETRI_TRANSITIONS=71} [2024-06-27 18:54:00,952 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 12 predicate places. [2024-06-27 18:54:00,953 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 71 transitions, 387 flow [2024-06-27 18:54:00,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:00,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:00,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:00,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:54:00,954 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:00,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:00,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1981792872, now seen corresponding path program 1 times [2024-06-27 18:54:00,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:00,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205196046] [2024-06-27 18:54:00,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:00,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:01,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:01,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:01,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205196046] [2024-06-27 18:54:01,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205196046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:01,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:01,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:54:01,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407906796] [2024-06-27 18:54:01,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:01,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:54:01,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:01,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:54:01,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:54:01,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:54:01,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 71 transitions, 387 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:01,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:01,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:54:01,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:02,586 INFO L124 PetriNetUnfolderBase]: 3828/6076 cut-off events. [2024-06-27 18:54:02,587 INFO L125 PetriNetUnfolderBase]: For 7112/7133 co-relation queries the response was YES. [2024-06-27 18:54:02,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16791 conditions, 6076 events. 3828/6076 cut-off events. For 7112/7133 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 36369 event pairs, 1753 based on Foata normal form. 27/5915 useless extension candidates. Maximal degree in co-relation 16769. Up to 5123 conditions per place. [2024-06-27 18:54:02,612 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 86 selfloop transitions, 23 changer transitions 1/120 dead transitions. [2024-06-27 18:54:02,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 120 transitions, 746 flow [2024-06-27 18:54:02,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:54:02,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:54:02,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2024-06-27 18:54:02,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6376811594202898 [2024-06-27 18:54:02,614 INFO L175 Difference]: Start difference. First operand has 64 places, 71 transitions, 387 flow. Second operand 6 states and 176 transitions. [2024-06-27 18:54:02,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 120 transitions, 746 flow [2024-06-27 18:54:02,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 120 transitions, 724 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:54:02,622 INFO L231 Difference]: Finished difference. Result has 67 places, 72 transitions, 438 flow [2024-06-27 18:54:02,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=438, PETRI_PLACES=67, PETRI_TRANSITIONS=72} [2024-06-27 18:54:02,623 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 15 predicate places. [2024-06-27 18:54:02,623 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 72 transitions, 438 flow [2024-06-27 18:54:02,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:02,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:02,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:02,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:54:02,624 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:02,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:02,624 INFO L85 PathProgramCache]: Analyzing trace with hash -759188824, now seen corresponding path program 1 times [2024-06-27 18:54:02,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:02,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446223602] [2024-06-27 18:54:02,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:02,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:02,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:03,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:03,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:03,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446223602] [2024-06-27 18:54:03,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446223602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:03,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:03,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:54:03,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576247695] [2024-06-27 18:54:03,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:03,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:54:03,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:03,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:54:03,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:54:03,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:54:03,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 72 transitions, 438 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:03,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:03,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:54:03,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:03,791 INFO L124 PetriNetUnfolderBase]: 3871/6130 cut-off events. [2024-06-27 18:54:03,792 INFO L125 PetriNetUnfolderBase]: For 8463/8489 co-relation queries the response was YES. [2024-06-27 18:54:03,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17902 conditions, 6130 events. 3871/6130 cut-off events. For 8463/8489 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 36234 event pairs, 1983 based on Foata normal form. 11/5955 useless extension candidates. Maximal degree in co-relation 17878. Up to 5549 conditions per place. [2024-06-27 18:54:03,831 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 80 selfloop transitions, 9 changer transitions 0/97 dead transitions. [2024-06-27 18:54:03,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 97 transitions, 712 flow [2024-06-27 18:54:03,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:54:03,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:54:03,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-06-27 18:54:03,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49130434782608695 [2024-06-27 18:54:03,833 INFO L175 Difference]: Start difference. First operand has 67 places, 72 transitions, 438 flow. Second operand 5 states and 113 transitions. [2024-06-27 18:54:03,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 97 transitions, 712 flow [2024-06-27 18:54:03,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 97 transitions, 659 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:54:03,841 INFO L231 Difference]: Finished difference. Result has 68 places, 79 transitions, 480 flow [2024-06-27 18:54:03,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=480, PETRI_PLACES=68, PETRI_TRANSITIONS=79} [2024-06-27 18:54:03,841 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 16 predicate places. [2024-06-27 18:54:03,842 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 79 transitions, 480 flow [2024-06-27 18:54:03,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:03,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:03,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:03,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:54:03,843 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:03,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:03,843 INFO L85 PathProgramCache]: Analyzing trace with hash -2060015213, now seen corresponding path program 1 times [2024-06-27 18:54:03,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:03,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410073205] [2024-06-27 18:54:03,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:03,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:04,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:04,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:04,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410073205] [2024-06-27 18:54:04,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410073205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:04,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:04,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:54:04,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843901222] [2024-06-27 18:54:04,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:04,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:54:04,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:04,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:54:04,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:54:04,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:54:04,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 79 transitions, 480 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 18:54:04,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:04,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:54:04,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:05,146 INFO L124 PetriNetUnfolderBase]: 4594/7248 cut-off events. [2024-06-27 18:54:05,146 INFO L125 PetriNetUnfolderBase]: For 11541/11541 co-relation queries the response was YES. [2024-06-27 18:54:05,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21547 conditions, 7248 events. 4594/7248 cut-off events. For 11541/11541 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 43536 event pairs, 2383 based on Foata normal form. 2/7028 useless extension candidates. Maximal degree in co-relation 21520. Up to 6538 conditions per place. [2024-06-27 18:54:05,182 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 97 selfloop transitions, 12 changer transitions 0/116 dead transitions. [2024-06-27 18:54:05,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 116 transitions, 836 flow [2024-06-27 18:54:05,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:54:05,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:54:05,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-27 18:54:05,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4746376811594203 [2024-06-27 18:54:05,183 INFO L175 Difference]: Start difference. First operand has 68 places, 79 transitions, 480 flow. Second operand 6 states and 131 transitions. [2024-06-27 18:54:05,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 116 transitions, 836 flow [2024-06-27 18:54:05,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 116 transitions, 809 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-27 18:54:05,191 INFO L231 Difference]: Finished difference. Result has 74 places, 89 transitions, 574 flow [2024-06-27 18:54:05,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=574, PETRI_PLACES=74, PETRI_TRANSITIONS=89} [2024-06-27 18:54:05,192 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 22 predicate places. [2024-06-27 18:54:05,192 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 89 transitions, 574 flow [2024-06-27 18:54:05,192 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 18:54:05,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:05,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:05,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:54:05,193 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:05,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:05,193 INFO L85 PathProgramCache]: Analyzing trace with hash 558287111, now seen corresponding path program 1 times [2024-06-27 18:54:05,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:05,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170169322] [2024-06-27 18:54:05,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:05,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:05,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:05,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:05,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170169322] [2024-06-27 18:54:05,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170169322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:05,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:05,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:54:05,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683765944] [2024-06-27 18:54:05,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:05,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:54:05,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:05,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:54:05,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:54:05,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:54:05,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 89 transitions, 574 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:05,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:05,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:54:05,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:06,414 INFO L124 PetriNetUnfolderBase]: 4488/7128 cut-off events. [2024-06-27 18:54:06,414 INFO L125 PetriNetUnfolderBase]: For 16637/16743 co-relation queries the response was YES. [2024-06-27 18:54:06,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23020 conditions, 7128 events. 4488/7128 cut-off events. For 16637/16743 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 43410 event pairs, 2093 based on Foata normal form. 39/6919 useless extension candidates. Maximal degree in co-relation 22989. Up to 6332 conditions per place. [2024-06-27 18:54:06,456 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 99 selfloop transitions, 22 changer transitions 0/132 dead transitions. [2024-06-27 18:54:06,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 132 transitions, 994 flow [2024-06-27 18:54:06,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:54:06,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:54:06,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-27 18:54:06,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5181159420289855 [2024-06-27 18:54:06,458 INFO L175 Difference]: Start difference. First operand has 74 places, 89 transitions, 574 flow. Second operand 6 states and 143 transitions. [2024-06-27 18:54:06,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 132 transitions, 994 flow [2024-06-27 18:54:06,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 132 transitions, 986 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 18:54:06,468 INFO L231 Difference]: Finished difference. Result has 81 places, 103 transitions, 760 flow [2024-06-27 18:54:06,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=760, PETRI_PLACES=81, PETRI_TRANSITIONS=103} [2024-06-27 18:54:06,469 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 29 predicate places. [2024-06-27 18:54:06,469 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 103 transitions, 760 flow [2024-06-27 18:54:06,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:06,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:06,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:06,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:54:06,470 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:06,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:06,470 INFO L85 PathProgramCache]: Analyzing trace with hash 564030791, now seen corresponding path program 2 times [2024-06-27 18:54:06,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:06,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416216683] [2024-06-27 18:54:06,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:06,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:06,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:06,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:06,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416216683] [2024-06-27 18:54:06,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416216683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:06,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:06,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:54:06,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597649926] [2024-06-27 18:54:06,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:06,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:54:06,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:06,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:54:06,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:54:07,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:54:07,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 103 transitions, 760 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:07,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:07,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:54:07,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:07,741 INFO L124 PetriNetUnfolderBase]: 4678/7397 cut-off events. [2024-06-27 18:54:07,742 INFO L125 PetriNetUnfolderBase]: For 23678/23781 co-relation queries the response was YES. [2024-06-27 18:54:07,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27051 conditions, 7397 events. 4678/7397 cut-off events. For 23678/23781 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 45089 event pairs, 1999 based on Foata normal form. 25/7172 useless extension candidates. Maximal degree in co-relation 27015. Up to 6414 conditions per place. [2024-06-27 18:54:07,791 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 102 selfloop transitions, 29 changer transitions 0/142 dead transitions. [2024-06-27 18:54:07,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 142 transitions, 1212 flow [2024-06-27 18:54:07,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:54:07,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:54:07,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-27 18:54:07,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5253623188405797 [2024-06-27 18:54:07,793 INFO L175 Difference]: Start difference. First operand has 81 places, 103 transitions, 760 flow. Second operand 6 states and 145 transitions. [2024-06-27 18:54:07,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 142 transitions, 1212 flow [2024-06-27 18:54:07,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 142 transitions, 1178 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-27 18:54:07,810 INFO L231 Difference]: Finished difference. Result has 86 places, 111 transitions, 885 flow [2024-06-27 18:54:07,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=885, PETRI_PLACES=86, PETRI_TRANSITIONS=111} [2024-06-27 18:54:07,811 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 34 predicate places. [2024-06-27 18:54:07,811 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 111 transitions, 885 flow [2024-06-27 18:54:07,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:07,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:07,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:07,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:54:07,811 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:07,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:07,812 INFO L85 PathProgramCache]: Analyzing trace with hash 564039719, now seen corresponding path program 1 times [2024-06-27 18:54:07,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:07,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587121022] [2024-06-27 18:54:07,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:07,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:08,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:08,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:08,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587121022] [2024-06-27 18:54:08,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587121022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:08,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:08,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:54:08,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161547637] [2024-06-27 18:54:08,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:08,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:54:08,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:08,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:54:08,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:54:08,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:54:08,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 111 transitions, 885 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 18:54:08,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:08,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:54:08,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:09,366 INFO L124 PetriNetUnfolderBase]: 4801/7566 cut-off events. [2024-06-27 18:54:09,366 INFO L125 PetriNetUnfolderBase]: For 27333/27333 co-relation queries the response was YES. [2024-06-27 18:54:09,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28409 conditions, 7566 events. 4801/7566 cut-off events. For 27333/27333 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 45522 event pairs, 2245 based on Foata normal form. 2/7334 useless extension candidates. Maximal degree in co-relation 28370. Up to 6802 conditions per place. [2024-06-27 18:54:09,444 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 127 selfloop transitions, 16 changer transitions 0/150 dead transitions. [2024-06-27 18:54:09,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 150 transitions, 1301 flow [2024-06-27 18:54:09,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:54:09,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:54:09,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-27 18:54:09,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4751552795031056 [2024-06-27 18:54:09,448 INFO L175 Difference]: Start difference. First operand has 86 places, 111 transitions, 885 flow. Second operand 7 states and 153 transitions. [2024-06-27 18:54:09,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 150 transitions, 1301 flow [2024-06-27 18:54:09,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 150 transitions, 1258 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-27 18:54:09,472 INFO L231 Difference]: Finished difference. Result has 91 places, 115 transitions, 915 flow [2024-06-27 18:54:09,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=915, PETRI_PLACES=91, PETRI_TRANSITIONS=115} [2024-06-27 18:54:09,474 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 39 predicate places. [2024-06-27 18:54:09,474 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 115 transitions, 915 flow [2024-06-27 18:54:09,474 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 18:54:09,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:09,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:09,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:54:09,475 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:09,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:09,475 INFO L85 PathProgramCache]: Analyzing trace with hash 902394333, now seen corresponding path program 1 times [2024-06-27 18:54:09,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:09,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363754325] [2024-06-27 18:54:09,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:09,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:09,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:09,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:09,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363754325] [2024-06-27 18:54:09,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363754325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:09,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:09,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:54:09,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463695772] [2024-06-27 18:54:09,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:09,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:54:09,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:09,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:54:09,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:54:10,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:54:10,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 115 transitions, 915 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:10,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:10,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:54:10,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:11,054 INFO L124 PetriNetUnfolderBase]: 4719/7403 cut-off events. [2024-06-27 18:54:11,054 INFO L125 PetriNetUnfolderBase]: For 35396/35547 co-relation queries the response was YES. [2024-06-27 18:54:11,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30080 conditions, 7403 events. 4719/7403 cut-off events. For 35396/35547 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 44736 event pairs, 1710 based on Foata normal form. 71/7109 useless extension candidates. Maximal degree in co-relation 30039. Up to 6311 conditions per place. [2024-06-27 18:54:11,105 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 118 selfloop transitions, 42 changer transitions 0/172 dead transitions. [2024-06-27 18:54:11,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 172 transitions, 1481 flow [2024-06-27 18:54:11,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:54:11,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:54:11,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-27 18:54:11,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5527950310559007 [2024-06-27 18:54:11,107 INFO L175 Difference]: Start difference. First operand has 91 places, 115 transitions, 915 flow. Second operand 7 states and 178 transitions. [2024-06-27 18:54:11,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 172 transitions, 1481 flow [2024-06-27 18:54:11,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 172 transitions, 1438 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 18:54:11,134 INFO L231 Difference]: Finished difference. Result has 94 places, 127 transitions, 1076 flow [2024-06-27 18:54:11,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1076, PETRI_PLACES=94, PETRI_TRANSITIONS=127} [2024-06-27 18:54:11,135 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 42 predicate places. [2024-06-27 18:54:11,135 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 127 transitions, 1076 flow [2024-06-27 18:54:11,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:11,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:11,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:11,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:54:11,135 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:11,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:11,136 INFO L85 PathProgramCache]: Analyzing trace with hash -262323522, now seen corresponding path program 1 times [2024-06-27 18:54:11,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:11,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643562642] [2024-06-27 18:54:11,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:11,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:11,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:11,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:11,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643562642] [2024-06-27 18:54:11,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643562642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:11,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:11,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:54:11,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31281558] [2024-06-27 18:54:11,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:11,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:54:11,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:11,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:54:11,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:54:11,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:54:11,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 127 transitions, 1076 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 18:54:11,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:11,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:54:11,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:12,606 INFO L124 PetriNetUnfolderBase]: 4993/7833 cut-off events. [2024-06-27 18:54:12,606 INFO L125 PetriNetUnfolderBase]: For 38980/38980 co-relation queries the response was YES. [2024-06-27 18:54:12,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33536 conditions, 7833 events. 4993/7833 cut-off events. For 38980/38980 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 47052 event pairs, 1873 based on Foata normal form. 2/7599 useless extension candidates. Maximal degree in co-relation 33493. Up to 7062 conditions per place. [2024-06-27 18:54:12,663 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 150 selfloop transitions, 16 changer transitions 0/173 dead transitions. [2024-06-27 18:54:12,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 173 transitions, 1604 flow [2024-06-27 18:54:12,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:54:12,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:54:12,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-27 18:54:12,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-27 18:54:12,665 INFO L175 Difference]: Start difference. First operand has 94 places, 127 transitions, 1076 flow. Second operand 7 states and 154 transitions. [2024-06-27 18:54:12,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 173 transitions, 1604 flow [2024-06-27 18:54:12,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 173 transitions, 1511 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-27 18:54:12,701 INFO L231 Difference]: Finished difference. Result has 100 places, 137 transitions, 1128 flow [2024-06-27 18:54:12,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=984, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1128, PETRI_PLACES=100, PETRI_TRANSITIONS=137} [2024-06-27 18:54:12,702 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 48 predicate places. [2024-06-27 18:54:12,702 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 137 transitions, 1128 flow [2024-06-27 18:54:12,702 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 18:54:12,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:12,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:12,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:54:12,703 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:12,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:12,703 INFO L85 PathProgramCache]: Analyzing trace with hash 902515233, now seen corresponding path program 2 times [2024-06-27 18:54:12,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:12,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285748463] [2024-06-27 18:54:12,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:12,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:13,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:13,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:13,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285748463] [2024-06-27 18:54:13,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285748463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:13,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:13,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:54:13,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998735170] [2024-06-27 18:54:13,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:13,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:54:13,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:13,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:54:13,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:54:13,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:54:13,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 137 transitions, 1128 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:13,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:13,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:54:13,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:14,406 INFO L124 PetriNetUnfolderBase]: 4993/7799 cut-off events. [2024-06-27 18:54:14,407 INFO L125 PetriNetUnfolderBase]: For 49985/50138 co-relation queries the response was YES. [2024-06-27 18:54:14,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35383 conditions, 7799 events. 4993/7799 cut-off events. For 49985/50138 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 47188 event pairs, 1611 based on Foata normal form. 64/7492 useless extension candidates. Maximal degree in co-relation 35337. Up to 6446 conditions per place. [2024-06-27 18:54:14,451 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 131 selfloop transitions, 55 changer transitions 0/201 dead transitions. [2024-06-27 18:54:14,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 201 transitions, 1921 flow [2024-06-27 18:54:14,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:54:14,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:54:14,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-27 18:54:14,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5559006211180124 [2024-06-27 18:54:14,453 INFO L175 Difference]: Start difference. First operand has 100 places, 137 transitions, 1128 flow. Second operand 7 states and 179 transitions. [2024-06-27 18:54:14,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 201 transitions, 1921 flow [2024-06-27 18:54:14,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 201 transitions, 1898 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-27 18:54:14,485 INFO L231 Difference]: Finished difference. Result has 106 places, 154 transitions, 1449 flow [2024-06-27 18:54:14,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1449, PETRI_PLACES=106, PETRI_TRANSITIONS=154} [2024-06-27 18:54:14,486 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 54 predicate places. [2024-06-27 18:54:14,486 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 154 transitions, 1449 flow [2024-06-27 18:54:14,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:14,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:14,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:14,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:54:14,487 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:14,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:14,487 INFO L85 PathProgramCache]: Analyzing trace with hash 305354098, now seen corresponding path program 2 times [2024-06-27 18:54:14,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:14,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775688672] [2024-06-27 18:54:14,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:14,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:14,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:14,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:14,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775688672] [2024-06-27 18:54:14,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775688672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:14,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:14,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:54:14,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356621623] [2024-06-27 18:54:14,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:14,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:54:14,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:14,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:54:14,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:54:15,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:54:15,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 154 transitions, 1449 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 18:54:15,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:15,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:54:15,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:16,045 INFO L124 PetriNetUnfolderBase]: 5301/8253 cut-off events. [2024-06-27 18:54:16,045 INFO L125 PetriNetUnfolderBase]: For 56486/56504 co-relation queries the response was YES. [2024-06-27 18:54:16,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39144 conditions, 8253 events. 5301/8253 cut-off events. For 56486/56504 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 49451 event pairs, 1762 based on Foata normal form. 14/8029 useless extension candidates. Maximal degree in co-relation 39095. Up to 7385 conditions per place. [2024-06-27 18:54:16,106 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 164 selfloop transitions, 31 changer transitions 0/202 dead transitions. [2024-06-27 18:54:16,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 202 transitions, 2110 flow [2024-06-27 18:54:16,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:54:16,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:54:16,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-27 18:54:16,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4906832298136646 [2024-06-27 18:54:16,108 INFO L175 Difference]: Start difference. First operand has 106 places, 154 transitions, 1449 flow. Second operand 7 states and 158 transitions. [2024-06-27 18:54:16,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 202 transitions, 2110 flow [2024-06-27 18:54:16,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 202 transitions, 2009 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-27 18:54:16,164 INFO L231 Difference]: Finished difference. Result has 111 places, 163 transitions, 1512 flow [2024-06-27 18:54:16,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1350, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1512, PETRI_PLACES=111, PETRI_TRANSITIONS=163} [2024-06-27 18:54:16,165 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 59 predicate places. [2024-06-27 18:54:16,165 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 163 transitions, 1512 flow [2024-06-27 18:54:16,166 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 18:54:16,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:16,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:16,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:54:16,166 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:16,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:16,166 INFO L85 PathProgramCache]: Analyzing trace with hash 305086971, now seen corresponding path program 3 times [2024-06-27 18:54:16,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:16,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600568309] [2024-06-27 18:54:16,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:16,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:16,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:16,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:16,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600568309] [2024-06-27 18:54:16,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600568309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:16,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:16,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:54:16,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161985647] [2024-06-27 18:54:16,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:16,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:54:16,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:16,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:54:16,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:54:16,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:54:16,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 163 transitions, 1512 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:16,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:16,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:54:16,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:17,728 INFO L124 PetriNetUnfolderBase]: 5169/7964 cut-off events. [2024-06-27 18:54:17,729 INFO L125 PetriNetUnfolderBase]: For 66185/66290 co-relation queries the response was YES. [2024-06-27 18:54:17,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40036 conditions, 7964 events. 5169/7964 cut-off events. For 66185/66290 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 47538 event pairs, 1592 based on Foata normal form. 30/7648 useless extension candidates. Maximal degree in co-relation 39984. Up to 6199 conditions per place. [2024-06-27 18:54:17,790 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 154 selfloop transitions, 67 changer transitions 0/239 dead transitions. [2024-06-27 18:54:17,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 239 transitions, 2591 flow [2024-06-27 18:54:17,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:54:17,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:54:17,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 18:54:17,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546583850931677 [2024-06-27 18:54:17,792 INFO L175 Difference]: Start difference. First operand has 111 places, 163 transitions, 1512 flow. Second operand 7 states and 176 transitions. [2024-06-27 18:54:17,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 239 transitions, 2591 flow [2024-06-27 18:54:17,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 239 transitions, 2551 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-27 18:54:17,849 INFO L231 Difference]: Finished difference. Result has 118 places, 191 transitions, 2033 flow [2024-06-27 18:54:17,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1472, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2033, PETRI_PLACES=118, PETRI_TRANSITIONS=191} [2024-06-27 18:54:17,850 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 66 predicate places. [2024-06-27 18:54:17,850 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 191 transitions, 2033 flow [2024-06-27 18:54:17,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:17,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:17,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:17,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:54:17,851 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:17,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:17,851 INFO L85 PathProgramCache]: Analyzing trace with hash 305087188, now seen corresponding path program 3 times [2024-06-27 18:54:17,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:17,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366880510] [2024-06-27 18:54:17,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:17,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:18,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:18,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:18,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366880510] [2024-06-27 18:54:18,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366880510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:18,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:18,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:54:18,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052644100] [2024-06-27 18:54:18,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:18,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:54:18,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:18,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:54:18,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:54:18,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:54:18,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 191 transitions, 2033 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 18:54:18,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:18,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:54:18,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:19,411 INFO L124 PetriNetUnfolderBase]: 5369/8266 cut-off events. [2024-06-27 18:54:19,412 INFO L125 PetriNetUnfolderBase]: For 74478/74496 co-relation queries the response was YES. [2024-06-27 18:54:19,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43471 conditions, 8266 events. 5369/8266 cut-off events. For 74478/74496 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 48787 event pairs, 1762 based on Foata normal form. 14/8068 useless extension candidates. Maximal degree in co-relation 43415. Up to 7478 conditions per place. [2024-06-27 18:54:19,483 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 191 selfloop transitions, 32 changer transitions 0/230 dead transitions. [2024-06-27 18:54:19,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 230 transitions, 2665 flow [2024-06-27 18:54:19,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:54:19,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:54:19,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-27 18:54:19,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48757763975155277 [2024-06-27 18:54:19,485 INFO L175 Difference]: Start difference. First operand has 118 places, 191 transitions, 2033 flow. Second operand 7 states and 157 transitions. [2024-06-27 18:54:19,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 230 transitions, 2665 flow [2024-06-27 18:54:19,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 230 transitions, 2548 flow, removed 46 selfloop flow, removed 2 redundant places. [2024-06-27 18:54:19,592 INFO L231 Difference]: Finished difference. Result has 123 places, 191 transitions, 1995 flow [2024-06-27 18:54:19,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1922, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1995, PETRI_PLACES=123, PETRI_TRANSITIONS=191} [2024-06-27 18:54:19,593 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 71 predicate places. [2024-06-27 18:54:19,593 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 191 transitions, 1995 flow [2024-06-27 18:54:19,593 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 18:54:19,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:19,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:19,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:54:19,594 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:19,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:19,594 INFO L85 PathProgramCache]: Analyzing trace with hash 305364018, now seen corresponding path program 1 times [2024-06-27 18:54:19,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:19,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688370607] [2024-06-27 18:54:19,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:19,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:20,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:20,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:20,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688370607] [2024-06-27 18:54:20,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688370607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:20,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:20,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:54:20,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067774266] [2024-06-27 18:54:20,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:20,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:54:20,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:20,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:54:20,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:54:20,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:54:20,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 191 transitions, 1995 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 18:54:20,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:20,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:54:20,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:21,521 INFO L124 PetriNetUnfolderBase]: 5361/8287 cut-off events. [2024-06-27 18:54:21,521 INFO L125 PetriNetUnfolderBase]: For 73985/73985 co-relation queries the response was YES. [2024-06-27 18:54:21,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43176 conditions, 8287 events. 5361/8287 cut-off events. For 73985/73985 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 49177 event pairs, 1767 based on Foata normal form. 4/8069 useless extension candidates. Maximal degree in co-relation 43118. Up to 7533 conditions per place. [2024-06-27 18:54:21,600 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 214 selfloop transitions, 34 changer transitions 0/255 dead transitions. [2024-06-27 18:54:21,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 255 transitions, 2876 flow [2024-06-27 18:54:21,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:54:21,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:54:21,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2024-06-27 18:54:21,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673913043478261 [2024-06-27 18:54:21,609 INFO L175 Difference]: Start difference. First operand has 123 places, 191 transitions, 1995 flow. Second operand 8 states and 172 transitions. [2024-06-27 18:54:21,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 255 transitions, 2876 flow [2024-06-27 18:54:21,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 255 transitions, 2758 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 18:54:21,678 INFO L231 Difference]: Finished difference. Result has 128 places, 217 transitions, 2291 flow [2024-06-27 18:54:21,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1891, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2291, PETRI_PLACES=128, PETRI_TRANSITIONS=217} [2024-06-27 18:54:21,679 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 76 predicate places. [2024-06-27 18:54:21,679 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 217 transitions, 2291 flow [2024-06-27 18:54:21,679 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 18:54:21,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:21,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:21,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:54:21,680 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:21,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:21,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1255269174, now seen corresponding path program 1 times [2024-06-27 18:54:21,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:21,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129184474] [2024-06-27 18:54:21,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:21,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:22,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:22,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:22,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129184474] [2024-06-27 18:54:22,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129184474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:22,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:22,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:54:22,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249278814] [2024-06-27 18:54:22,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:22,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:54:22,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:22,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:54:22,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:54:22,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:54:22,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 217 transitions, 2291 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:22,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:22,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:54:22,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:23,861 INFO L124 PetriNetUnfolderBase]: 5108/7902 cut-off events. [2024-06-27 18:54:23,861 INFO L125 PetriNetUnfolderBase]: For 85833/86007 co-relation queries the response was YES. [2024-06-27 18:54:23,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43625 conditions, 7902 events. 5108/7902 cut-off events. For 85833/86007 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 46889 event pairs, 1651 based on Foata normal form. 76/7649 useless extension candidates. Maximal degree in co-relation 43564. Up to 6721 conditions per place. [2024-06-27 18:54:23,934 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 193 selfloop transitions, 49 changer transitions 0/268 dead transitions. [2024-06-27 18:54:23,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 268 transitions, 3051 flow [2024-06-27 18:54:23,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:54:23,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:54:23,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-27 18:54:23,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5496894409937888 [2024-06-27 18:54:23,956 INFO L175 Difference]: Start difference. First operand has 128 places, 217 transitions, 2291 flow. Second operand 7 states and 177 transitions. [2024-06-27 18:54:23,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 268 transitions, 3051 flow [2024-06-27 18:54:24,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 268 transitions, 2943 flow, removed 53 selfloop flow, removed 1 redundant places. [2024-06-27 18:54:24,086 INFO L231 Difference]: Finished difference. Result has 134 places, 221 transitions, 2370 flow [2024-06-27 18:54:24,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2183, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2370, PETRI_PLACES=134, PETRI_TRANSITIONS=221} [2024-06-27 18:54:24,087 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 82 predicate places. [2024-06-27 18:54:24,087 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 221 transitions, 2370 flow [2024-06-27 18:54:24,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:24,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:24,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:24,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:54:24,088 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:24,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:24,088 INFO L85 PathProgramCache]: Analyzing trace with hash -360693724, now seen corresponding path program 1 times [2024-06-27 18:54:24,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:24,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324398463] [2024-06-27 18:54:24,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:24,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:24,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:24,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:24,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324398463] [2024-06-27 18:54:24,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324398463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:24,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:24,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:54:24,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455921249] [2024-06-27 18:54:24,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:24,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:54:24,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:24,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:54:24,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:54:24,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:54:24,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 221 transitions, 2370 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 18:54:24,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:24,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:54:24,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:25,771 INFO L124 PetriNetUnfolderBase]: 5392/8325 cut-off events. [2024-06-27 18:54:25,771 INFO L125 PetriNetUnfolderBase]: For 86611/86611 co-relation queries the response was YES. [2024-06-27 18:54:25,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45450 conditions, 8325 events. 5392/8325 cut-off events. For 86611/86611 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 49085 event pairs, 1764 based on Foata normal form. 4/8109 useless extension candidates. Maximal degree in co-relation 45386. Up to 7523 conditions per place. [2024-06-27 18:54:25,846 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 247 selfloop transitions, 32 changer transitions 0/286 dead transitions. [2024-06-27 18:54:25,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 286 transitions, 3288 flow [2024-06-27 18:54:25,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:54:25,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:54:25,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-27 18:54:25,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945652173913043 [2024-06-27 18:54:25,848 INFO L175 Difference]: Start difference. First operand has 134 places, 221 transitions, 2370 flow. Second operand 8 states and 182 transitions. [2024-06-27 18:54:25,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 286 transitions, 3288 flow [2024-06-27 18:54:25,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 286 transitions, 3159 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 18:54:25,958 INFO L231 Difference]: Finished difference. Result has 140 places, 241 transitions, 2598 flow [2024-06-27 18:54:25,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2258, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2598, PETRI_PLACES=140, PETRI_TRANSITIONS=241} [2024-06-27 18:54:25,959 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 88 predicate places. [2024-06-27 18:54:25,959 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 241 transitions, 2598 flow [2024-06-27 18:54:25,959 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 18:54:25,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:25,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:25,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:54:25,960 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:25,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:25,960 INFO L85 PathProgramCache]: Analyzing trace with hash -2086796998, now seen corresponding path program 2 times [2024-06-27 18:54:25,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:25,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515199439] [2024-06-27 18:54:25,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:25,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:26,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:26,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:26,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515199439] [2024-06-27 18:54:26,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515199439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:26,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:26,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:54:26,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490760419] [2024-06-27 18:54:26,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:26,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:54:26,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:26,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:54:26,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:54:26,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:54:26,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 241 transitions, 2598 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 18:54:26,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:26,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:54:26,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:27,823 INFO L124 PetriNetUnfolderBase]: 5648/8655 cut-off events. [2024-06-27 18:54:27,823 INFO L125 PetriNetUnfolderBase]: For 98361/98361 co-relation queries the response was YES. [2024-06-27 18:54:27,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48564 conditions, 8655 events. 5648/8655 cut-off events. For 98361/98361 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 50665 event pairs, 1592 based on Foata normal form. 4/8447 useless extension candidates. Maximal degree in co-relation 48496. Up to 7557 conditions per place. [2024-06-27 18:54:27,903 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 259 selfloop transitions, 51 changer transitions 0/317 dead transitions. [2024-06-27 18:54:27,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 317 transitions, 3832 flow [2024-06-27 18:54:27,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:54:27,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:54:27,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 18:54:27,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135869565217391 [2024-06-27 18:54:27,905 INFO L175 Difference]: Start difference. First operand has 140 places, 241 transitions, 2598 flow. Second operand 8 states and 189 transitions. [2024-06-27 18:54:27,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 317 transitions, 3832 flow [2024-06-27 18:54:28,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 317 transitions, 3768 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-06-27 18:54:28,045 INFO L231 Difference]: Finished difference. Result has 148 places, 265 transitions, 2989 flow [2024-06-27 18:54:28,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2534, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2989, PETRI_PLACES=148, PETRI_TRANSITIONS=265} [2024-06-27 18:54:28,045 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 96 predicate places. [2024-06-27 18:54:28,046 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 265 transitions, 2989 flow [2024-06-27 18:54:28,046 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 18:54:28,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:28,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:28,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:54:28,046 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:28,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:28,047 INFO L85 PathProgramCache]: Analyzing trace with hash -356939066, now seen corresponding path program 1 times [2024-06-27 18:54:28,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:28,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561187994] [2024-06-27 18:54:28,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:28,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:28,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:28,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:28,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561187994] [2024-06-27 18:54:28,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561187994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:28,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:28,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:54:28,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133952003] [2024-06-27 18:54:28,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:28,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:54:28,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:28,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:54:28,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:54:28,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:54:28,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 265 transitions, 2989 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 18:54:28,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:28,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:54:28,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:29,981 INFO L124 PetriNetUnfolderBase]: 5639/8650 cut-off events. [2024-06-27 18:54:29,981 INFO L125 PetriNetUnfolderBase]: For 112231/112231 co-relation queries the response was YES. [2024-06-27 18:54:30,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51122 conditions, 8650 events. 5639/8650 cut-off events. For 112231/112231 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 50698 event pairs, 1582 based on Foata normal form. 6/8442 useless extension candidates. Maximal degree in co-relation 51050. Up to 7590 conditions per place. [2024-06-27 18:54:30,053 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 258 selfloop transitions, 59 changer transitions 0/324 dead transitions. [2024-06-27 18:54:30,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 324 transitions, 4040 flow [2024-06-27 18:54:30,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:54:30,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:54:30,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 18:54:30,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027173913043478 [2024-06-27 18:54:30,055 INFO L175 Difference]: Start difference. First operand has 148 places, 265 transitions, 2989 flow. Second operand 8 states and 185 transitions. [2024-06-27 18:54:30,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 324 transitions, 4040 flow [2024-06-27 18:54:30,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 324 transitions, 3905 flow, removed 56 selfloop flow, removed 3 redundant places. [2024-06-27 18:54:30,222 INFO L231 Difference]: Finished difference. Result has 155 places, 278 transitions, 3240 flow [2024-06-27 18:54:30,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2886, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3240, PETRI_PLACES=155, PETRI_TRANSITIONS=278} [2024-06-27 18:54:30,223 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 103 predicate places. [2024-06-27 18:54:30,223 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 278 transitions, 3240 flow [2024-06-27 18:54:30,224 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 18:54:30,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:30,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:30,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:54:30,224 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:30,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:30,224 INFO L85 PathProgramCache]: Analyzing trace with hash -356939314, now seen corresponding path program 3 times [2024-06-27 18:54:30,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:30,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684949472] [2024-06-27 18:54:30,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:30,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:30,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:30,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:30,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684949472] [2024-06-27 18:54:30,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684949472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:30,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:30,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:54:30,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072934881] [2024-06-27 18:54:30,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:30,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:54:30,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:30,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:54:30,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:54:30,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:54:30,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 278 transitions, 3240 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 18:54:30,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:30,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:54:30,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:32,212 INFO L124 PetriNetUnfolderBase]: 5616/8611 cut-off events. [2024-06-27 18:54:32,212 INFO L125 PetriNetUnfolderBase]: For 115937/115937 co-relation queries the response was YES. [2024-06-27 18:54:32,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51414 conditions, 8611 events. 5616/8611 cut-off events. For 115937/115937 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 50397 event pairs, 1579 based on Foata normal form. 8/8407 useless extension candidates. Maximal degree in co-relation 51338. Up to 7539 conditions per place. [2024-06-27 18:54:32,286 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 256 selfloop transitions, 61 changer transitions 0/324 dead transitions. [2024-06-27 18:54:32,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 324 transitions, 4100 flow [2024-06-27 18:54:32,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:54:32,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:54:32,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 18:54:32,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054347826086957 [2024-06-27 18:54:32,288 INFO L175 Difference]: Start difference. First operand has 155 places, 278 transitions, 3240 flow. Second operand 8 states and 186 transitions. [2024-06-27 18:54:32,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 324 transitions, 4100 flow [2024-06-27 18:54:32,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 324 transitions, 3969 flow, removed 54 selfloop flow, removed 3 redundant places. [2024-06-27 18:54:32,474 INFO L231 Difference]: Finished difference. Result has 160 places, 278 transitions, 3246 flow [2024-06-27 18:54:32,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3109, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3246, PETRI_PLACES=160, PETRI_TRANSITIONS=278} [2024-06-27 18:54:32,475 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 108 predicate places. [2024-06-27 18:54:32,475 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 278 transitions, 3246 flow [2024-06-27 18:54:32,475 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 18:54:32,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:32,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:32,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:54:32,476 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:32,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:32,476 INFO L85 PathProgramCache]: Analyzing trace with hash 876340998, now seen corresponding path program 2 times [2024-06-27 18:54:32,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:32,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346672954] [2024-06-27 18:54:32,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:32,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:32,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:33,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:33,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:33,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346672954] [2024-06-27 18:54:33,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346672954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:33,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:33,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:54:33,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16848302] [2024-06-27 18:54:33,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:33,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:54:33,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:33,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:54:33,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:54:33,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:54:33,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 278 transitions, 3246 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 18:54:33,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:33,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:54:33,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:34,711 INFO L124 PetriNetUnfolderBase]: 5653/8653 cut-off events. [2024-06-27 18:54:34,711 INFO L125 PetriNetUnfolderBase]: For 121199/121229 co-relation queries the response was YES. [2024-06-27 18:54:34,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52026 conditions, 8653 events. 5653/8653 cut-off events. For 121199/121229 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 50574 event pairs, 1574 based on Foata normal form. 22/8465 useless extension candidates. Maximal degree in co-relation 51948. Up to 7788 conditions per place. [2024-06-27 18:54:34,801 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 280 selfloop transitions, 61 changer transitions 0/348 dead transitions. [2024-06-27 18:54:34,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 348 transitions, 4424 flow [2024-06-27 18:54:34,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:54:34,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:54:34,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 203 transitions. [2024-06-27 18:54:34,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49033816425120774 [2024-06-27 18:54:34,802 INFO L175 Difference]: Start difference. First operand has 160 places, 278 transitions, 3246 flow. Second operand 9 states and 203 transitions. [2024-06-27 18:54:34,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 348 transitions, 4424 flow [2024-06-27 18:54:35,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 348 transitions, 4312 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 18:54:35,004 INFO L231 Difference]: Finished difference. Result has 165 places, 290 transitions, 3462 flow [2024-06-27 18:54:35,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3140, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3462, PETRI_PLACES=165, PETRI_TRANSITIONS=290} [2024-06-27 18:54:35,004 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 113 predicate places. [2024-06-27 18:54:35,004 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 290 transitions, 3462 flow [2024-06-27 18:54:35,005 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 18:54:35,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:35,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:35,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:54:35,005 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:35,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:35,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1018909488, now seen corresponding path program 4 times [2024-06-27 18:54:35,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:35,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493395280] [2024-06-27 18:54:35,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:35,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:35,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:35,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:35,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493395280] [2024-06-27 18:54:35,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493395280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:35,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:35,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:54:35,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477633594] [2024-06-27 18:54:35,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:35,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:54:35,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:35,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:54:35,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:54:35,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:54:35,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 290 transitions, 3462 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 18:54:35,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:35,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:54:35,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:37,047 INFO L124 PetriNetUnfolderBase]: 5795/8872 cut-off events. [2024-06-27 18:54:37,047 INFO L125 PetriNetUnfolderBase]: For 135604/135616 co-relation queries the response was YES. [2024-06-27 18:54:37,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54736 conditions, 8872 events. 5795/8872 cut-off events. For 135604/135616 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 52176 event pairs, 1368 based on Foata normal form. 12/8665 useless extension candidates. Maximal degree in co-relation 54656. Up to 7398 conditions per place. [2024-06-27 18:54:37,123 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 259 selfloop transitions, 108 changer transitions 0/374 dead transitions. [2024-06-27 18:54:37,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 374 transitions, 5020 flow [2024-06-27 18:54:37,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:54:37,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:54:37,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 18:54:37,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190217391304348 [2024-06-27 18:54:37,125 INFO L175 Difference]: Start difference. First operand has 165 places, 290 transitions, 3462 flow. Second operand 8 states and 191 transitions. [2024-06-27 18:54:37,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 374 transitions, 5020 flow [2024-06-27 18:54:37,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 374 transitions, 4852 flow, removed 54 selfloop flow, removed 5 redundant places. [2024-06-27 18:54:37,342 INFO L231 Difference]: Finished difference. Result has 171 places, 319 transitions, 4058 flow [2024-06-27 18:54:37,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3343, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4058, PETRI_PLACES=171, PETRI_TRANSITIONS=319} [2024-06-27 18:54:37,343 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 119 predicate places. [2024-06-27 18:54:37,343 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 319 transitions, 4058 flow [2024-06-27 18:54:37,343 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 18:54:37,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:37,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:37,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:54:37,343 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:37,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:37,344 INFO L85 PathProgramCache]: Analyzing trace with hash 867770118, now seen corresponding path program 3 times [2024-06-27 18:54:37,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:37,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143394992] [2024-06-27 18:54:37,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:37,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:37,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:37,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:37,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143394992] [2024-06-27 18:54:37,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143394992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:37,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:37,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:54:37,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354506668] [2024-06-27 18:54:37,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:37,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:54:37,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:37,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:54:37,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:54:38,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:54:38,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 319 transitions, 4058 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 18:54:38,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:38,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:54:38,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:39,477 INFO L124 PetriNetUnfolderBase]: 5838/8933 cut-off events. [2024-06-27 18:54:39,477 INFO L125 PetriNetUnfolderBase]: For 150927/150939 co-relation queries the response was YES. [2024-06-27 18:54:39,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57952 conditions, 8933 events. 5838/8933 cut-off events. For 150927/150939 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 52455 event pairs, 1385 based on Foata normal form. 10/8724 useless extension candidates. Maximal degree in co-relation 57867. Up to 7720 conditions per place. [2024-06-27 18:54:39,583 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 290 selfloop transitions, 91 changer transitions 0/388 dead transitions. [2024-06-27 18:54:39,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 388 transitions, 5546 flow [2024-06-27 18:54:39,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:54:39,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:54:39,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 18:54:39,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163043478260869 [2024-06-27 18:54:39,585 INFO L175 Difference]: Start difference. First operand has 171 places, 319 transitions, 4058 flow. Second operand 8 states and 190 transitions. [2024-06-27 18:54:39,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 388 transitions, 5546 flow [2024-06-27 18:54:39,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 388 transitions, 5291 flow, removed 118 selfloop flow, removed 2 redundant places. [2024-06-27 18:54:39,902 INFO L231 Difference]: Finished difference. Result has 179 places, 337 transitions, 4388 flow [2024-06-27 18:54:39,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3901, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4388, PETRI_PLACES=179, PETRI_TRANSITIONS=337} [2024-06-27 18:54:39,903 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 127 predicate places. [2024-06-27 18:54:39,903 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 337 transitions, 4388 flow [2024-06-27 18:54:39,903 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 18:54:39,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:39,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:39,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:54:39,904 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:39,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:39,904 INFO L85 PathProgramCache]: Analyzing trace with hash 867763360, now seen corresponding path program 5 times [2024-06-27 18:54:39,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:39,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605727609] [2024-06-27 18:54:39,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:39,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:40,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:40,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:40,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605727609] [2024-06-27 18:54:40,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605727609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:40,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:40,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:54:40,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029763466] [2024-06-27 18:54:40,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:40,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:54:40,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:40,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:54:40,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:54:40,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:54:40,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 337 transitions, 4388 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 18:54:40,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:40,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:54:40,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:41,775 INFO L124 PetriNetUnfolderBase]: 5880/8985 cut-off events. [2024-06-27 18:54:41,775 INFO L125 PetriNetUnfolderBase]: For 161066/161078 co-relation queries the response was YES. [2024-06-27 18:54:41,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59308 conditions, 8985 events. 5880/8985 cut-off events. For 161066/161078 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 52624 event pairs, 1397 based on Foata normal form. 8/8776 useless extension candidates. Maximal degree in co-relation 59219. Up to 7459 conditions per place. [2024-06-27 18:54:41,883 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 263 selfloop transitions, 127 changer transitions 0/397 dead transitions. [2024-06-27 18:54:41,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 397 transitions, 5822 flow [2024-06-27 18:54:41,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:54:41,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:54:41,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 18:54:41,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271739130434783 [2024-06-27 18:54:41,885 INFO L175 Difference]: Start difference. First operand has 179 places, 337 transitions, 4388 flow. Second operand 8 states and 194 transitions. [2024-06-27 18:54:41,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 397 transitions, 5822 flow [2024-06-27 18:54:42,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 397 transitions, 5588 flow, removed 84 selfloop flow, removed 3 redundant places. [2024-06-27 18:54:42,270 INFO L231 Difference]: Finished difference. Result has 185 places, 348 transitions, 4672 flow [2024-06-27 18:54:42,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4192, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4672, PETRI_PLACES=185, PETRI_TRANSITIONS=348} [2024-06-27 18:54:42,271 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 133 predicate places. [2024-06-27 18:54:42,271 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 348 transitions, 4672 flow [2024-06-27 18:54:42,272 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 18:54:42,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:42,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:42,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:54:42,272 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:42,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:42,288 INFO L85 PathProgramCache]: Analyzing trace with hash 867769870, now seen corresponding path program 6 times [2024-06-27 18:54:42,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:42,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869918085] [2024-06-27 18:54:42,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:42,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:42,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:42,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:42,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869918085] [2024-06-27 18:54:42,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869918085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:42,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:42,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:54:42,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002727853] [2024-06-27 18:54:42,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:42,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:54:42,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:42,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:54:42,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:54:42,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:54:42,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 348 transitions, 4672 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 18:54:42,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:42,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:54:42,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:44,335 INFO L124 PetriNetUnfolderBase]: 5854/8947 cut-off events. [2024-06-27 18:54:44,335 INFO L125 PetriNetUnfolderBase]: For 166660/166672 co-relation queries the response was YES. [2024-06-27 18:54:44,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59829 conditions, 8947 events. 5854/8947 cut-off events. For 166660/166672 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 52332 event pairs, 1402 based on Foata normal form. 12/8742 useless extension candidates. Maximal degree in co-relation 59737. Up to 7439 conditions per place. [2024-06-27 18:54:44,439 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 266 selfloop transitions, 122 changer transitions 0/395 dead transitions. [2024-06-27 18:54:44,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 395 transitions, 5804 flow [2024-06-27 18:54:44,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:54:44,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:54:44,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 18:54:44,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244565217391305 [2024-06-27 18:54:44,441 INFO L175 Difference]: Start difference. First operand has 185 places, 348 transitions, 4672 flow. Second operand 8 states and 193 transitions. [2024-06-27 18:54:44,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 395 transitions, 5804 flow [2024-06-27 18:54:44,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 395 transitions, 5485 flow, removed 70 selfloop flow, removed 4 redundant places. [2024-06-27 18:54:44,826 INFO L231 Difference]: Finished difference. Result has 189 places, 348 transitions, 4613 flow [2024-06-27 18:54:44,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4353, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4613, PETRI_PLACES=189, PETRI_TRANSITIONS=348} [2024-06-27 18:54:44,827 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 137 predicate places. [2024-06-27 18:54:44,827 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 348 transitions, 4613 flow [2024-06-27 18:54:44,827 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 18:54:44,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:44,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:44,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:54:44,828 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:44,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:44,828 INFO L85 PathProgramCache]: Analyzing trace with hash -934769695, now seen corresponding path program 1 times [2024-06-27 18:54:44,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:44,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569668534] [2024-06-27 18:54:44,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:44,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:44,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:45,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:45,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:45,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569668534] [2024-06-27 18:54:45,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569668534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:45,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:45,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:54:45,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930631664] [2024-06-27 18:54:45,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:45,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:54:45,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:45,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:54:45,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:54:45,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:54:45,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 348 transitions, 4613 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 18:54:45,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:45,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:54:45,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:46,612 INFO L124 PetriNetUnfolderBase]: 5790/8909 cut-off events. [2024-06-27 18:54:46,612 INFO L125 PetriNetUnfolderBase]: For 167456/167486 co-relation queries the response was YES. [2024-06-27 18:54:46,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59009 conditions, 8909 events. 5790/8909 cut-off events. For 167456/167486 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 52619 event pairs, 1629 based on Foata normal form. 24/8698 useless extension candidates. Maximal degree in co-relation 58916. Up to 8050 conditions per place. [2024-06-27 18:54:46,705 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 329 selfloop transitions, 34 changer transitions 0/370 dead transitions. [2024-06-27 18:54:46,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 370 transitions, 5452 flow [2024-06-27 18:54:46,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:54:46,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:54:46,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-06-27 18:54:46,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49130434782608695 [2024-06-27 18:54:46,707 INFO L175 Difference]: Start difference. First operand has 189 places, 348 transitions, 4613 flow. Second operand 5 states and 113 transitions. [2024-06-27 18:54:46,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 370 transitions, 5452 flow [2024-06-27 18:54:46,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 370 transitions, 5162 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 18:54:47,000 INFO L231 Difference]: Finished difference. Result has 188 places, 348 transitions, 4410 flow [2024-06-27 18:54:47,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4325, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4410, PETRI_PLACES=188, PETRI_TRANSITIONS=348} [2024-06-27 18:54:47,001 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 136 predicate places. [2024-06-27 18:54:47,001 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 348 transitions, 4410 flow [2024-06-27 18:54:47,001 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 18:54:47,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:47,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:47,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:54:47,002 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:47,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:47,002 INFO L85 PathProgramCache]: Analyzing trace with hash -504612106, now seen corresponding path program 1 times [2024-06-27 18:54:47,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:47,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138755659] [2024-06-27 18:54:47,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:47,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:47,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:47,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:47,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138755659] [2024-06-27 18:54:47,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138755659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:47,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:47,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:54:47,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981862833] [2024-06-27 18:54:47,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:47,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:54:47,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:47,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:54:47,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:54:47,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:54:47,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 348 transitions, 4410 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:47,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:47,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:54:47,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:49,590 INFO L124 PetriNetUnfolderBase]: 6153/9301 cut-off events. [2024-06-27 18:54:49,590 INFO L125 PetriNetUnfolderBase]: For 193344/193503 co-relation queries the response was YES. [2024-06-27 18:54:49,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63564 conditions, 9301 events. 6153/9301 cut-off events. For 193344/193503 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 54257 event pairs, 1501 based on Foata normal form. 22/8941 useless extension candidates. Maximal degree in co-relation 63470. Up to 7763 conditions per place. [2024-06-27 18:54:49,694 INFO L140 encePairwiseOnDemand]: 28/46 looper letters, 328 selfloop transitions, 94 changer transitions 0/480 dead transitions. [2024-06-27 18:54:49,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 480 transitions, 6441 flow [2024-06-27 18:54:49,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:54:49,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:54:49,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-27 18:54:49,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5652173913043478 [2024-06-27 18:54:49,695 INFO L175 Difference]: Start difference. First operand has 188 places, 348 transitions, 4410 flow. Second operand 9 states and 234 transitions. [2024-06-27 18:54:49,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 480 transitions, 6441 flow [2024-06-27 18:54:50,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 480 transitions, 6365 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 18:54:50,080 INFO L231 Difference]: Finished difference. Result has 197 places, 399 transitions, 5363 flow [2024-06-27 18:54:50,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4347, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5363, PETRI_PLACES=197, PETRI_TRANSITIONS=399} [2024-06-27 18:54:50,081 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 145 predicate places. [2024-06-27 18:54:50,081 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 399 transitions, 5363 flow [2024-06-27 18:54:50,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:50,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:50,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:50,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:54:50,082 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:50,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:50,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1700505654, now seen corresponding path program 2 times [2024-06-27 18:54:50,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:50,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876336289] [2024-06-27 18:54:50,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:50,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:50,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:50,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:50,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876336289] [2024-06-27 18:54:50,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876336289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:50,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:50,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:54:50,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526524482] [2024-06-27 18:54:50,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:50,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:54:50,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:50,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:54:50,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:54:50,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:54:50,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 399 transitions, 5363 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:50,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:50,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:54:50,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:52,787 INFO L124 PetriNetUnfolderBase]: 6403/9671 cut-off events. [2024-06-27 18:54:52,788 INFO L125 PetriNetUnfolderBase]: For 219175/219463 co-relation queries the response was YES. [2024-06-27 18:54:52,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69128 conditions, 9671 events. 6403/9671 cut-off events. For 219175/219463 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 56662 event pairs, 1115 based on Foata normal form. 74/9351 useless extension candidates. Maximal degree in co-relation 69030. Up to 7704 conditions per place. [2024-06-27 18:54:52,908 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 308 selfloop transitions, 104 changer transitions 0/470 dead transitions. [2024-06-27 18:54:52,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 470 transitions, 6692 flow [2024-06-27 18:54:52,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:54:52,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:54:52,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-27 18:54:52,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5597826086956522 [2024-06-27 18:54:52,910 INFO L175 Difference]: Start difference. First operand has 197 places, 399 transitions, 5363 flow. Second operand 8 states and 206 transitions. [2024-06-27 18:54:52,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 470 transitions, 6692 flow [2024-06-27 18:54:53,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 470 transitions, 6556 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-27 18:54:53,378 INFO L231 Difference]: Finished difference. Result has 203 places, 408 transitions, 5611 flow [2024-06-27 18:54:53,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5227, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5611, PETRI_PLACES=203, PETRI_TRANSITIONS=408} [2024-06-27 18:54:53,380 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 151 predicate places. [2024-06-27 18:54:53,380 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 408 transitions, 5611 flow [2024-06-27 18:54:53,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:53,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:53,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:53,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:54:53,381 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:53,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:53,381 INFO L85 PathProgramCache]: Analyzing trace with hash -385211653, now seen corresponding path program 1 times [2024-06-27 18:54:53,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:53,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143833536] [2024-06-27 18:54:53,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:53,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:54,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:54,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:54,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143833536] [2024-06-27 18:54:54,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143833536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:54,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:54,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:54:54,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748327391] [2024-06-27 18:54:54,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:54,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:54:54,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:54,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:54:54,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:54:54,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:54:54,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 408 transitions, 5611 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 18:54:54,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:54,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:54:54,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:56,137 INFO L124 PetriNetUnfolderBase]: 6677/10100 cut-off events. [2024-06-27 18:54:56,137 INFO L125 PetriNetUnfolderBase]: For 216442/216446 co-relation queries the response was YES. [2024-06-27 18:54:56,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72563 conditions, 10100 events. 6677/10100 cut-off events. For 216442/216446 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 59638 event pairs, 1662 based on Foata normal form. 6/9896 useless extension candidates. Maximal degree in co-relation 72463. Up to 9179 conditions per place. [2024-06-27 18:54:56,248 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 400 selfloop transitions, 53 changer transitions 0/460 dead transitions. [2024-06-27 18:54:56,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 460 transitions, 6803 flow [2024-06-27 18:54:56,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:54:56,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:54:56,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-27 18:54:56,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49184782608695654 [2024-06-27 18:54:56,250 INFO L175 Difference]: Start difference. First operand has 203 places, 408 transitions, 5611 flow. Second operand 8 states and 181 transitions. [2024-06-27 18:54:56,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 460 transitions, 6803 flow [2024-06-27 18:54:56,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 460 transitions, 6527 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-27 18:54:56,664 INFO L231 Difference]: Finished difference. Result has 207 places, 413 transitions, 5573 flow [2024-06-27 18:54:56,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5357, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5573, PETRI_PLACES=207, PETRI_TRANSITIONS=413} [2024-06-27 18:54:56,665 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 155 predicate places. [2024-06-27 18:54:56,666 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 413 transitions, 5573 flow [2024-06-27 18:54:56,666 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 18:54:56,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:56,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:56,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:54:56,666 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:56,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:56,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1644618570, now seen corresponding path program 3 times [2024-06-27 18:54:56,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:56,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152533106] [2024-06-27 18:54:56,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:56,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:57,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:57,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:57,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152533106] [2024-06-27 18:54:57,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152533106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:57,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:57,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:54:57,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773111069] [2024-06-27 18:54:57,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:57,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:54:57,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:57,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:54:57,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:54:57,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:54:57,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 413 transitions, 5573 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:57,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:57,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:54:57,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:59,284 INFO L124 PetriNetUnfolderBase]: 6555/9899 cut-off events. [2024-06-27 18:54:59,284 INFO L125 PetriNetUnfolderBase]: For 230024/230357 co-relation queries the response was YES. [2024-06-27 18:54:59,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70539 conditions, 9899 events. 6555/9899 cut-off events. For 230024/230357 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 58546 event pairs, 1494 based on Foata normal form. 48/9557 useless extension candidates. Maximal degree in co-relation 70437. Up to 8145 conditions per place. [2024-06-27 18:54:59,406 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 311 selfloop transitions, 105 changer transitions 0/477 dead transitions. [2024-06-27 18:54:59,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 477 transitions, 6852 flow [2024-06-27 18:54:59,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:54:59,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:54:59,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-27 18:54:59,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5543478260869565 [2024-06-27 18:54:59,408 INFO L175 Difference]: Start difference. First operand has 207 places, 413 transitions, 5573 flow. Second operand 8 states and 204 transitions. [2024-06-27 18:54:59,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 477 transitions, 6852 flow [2024-06-27 18:54:59,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 477 transitions, 6788 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 18:54:59,970 INFO L231 Difference]: Finished difference. Result has 212 places, 416 transitions, 5808 flow [2024-06-27 18:54:59,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5509, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5808, PETRI_PLACES=212, PETRI_TRANSITIONS=416} [2024-06-27 18:54:59,971 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 160 predicate places. [2024-06-27 18:54:59,971 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 416 transitions, 5808 flow [2024-06-27 18:54:59,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:59,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:59,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:59,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:54:59,972 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:59,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:59,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1310226077, now seen corresponding path program 1 times [2024-06-27 18:54:59,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:59,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367865946] [2024-06-27 18:54:59,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:59,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:00,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:00,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:00,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367865946] [2024-06-27 18:55:00,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367865946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:00,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:00,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:55:00,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498270445] [2024-06-27 18:55:00,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:00,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:55:00,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:00,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:55:00,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:55:00,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:55:00,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 416 transitions, 5808 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 18:55:00,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:00,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:55:00,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:02,611 INFO L124 PetriNetUnfolderBase]: 6923/10437 cut-off events. [2024-06-27 18:55:02,612 INFO L125 PetriNetUnfolderBase]: For 227582/227588 co-relation queries the response was YES. [2024-06-27 18:55:02,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73905 conditions, 10437 events. 6923/10437 cut-off events. For 227582/227588 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 61676 event pairs, 1725 based on Foata normal form. 10/10243 useless extension candidates. Maximal degree in co-relation 73802. Up to 9679 conditions per place. [2024-06-27 18:55:02,750 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 436 selfloop transitions, 34 changer transitions 0/477 dead transitions. [2024-06-27 18:55:02,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 477 transitions, 7091 flow [2024-06-27 18:55:02,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:55:02,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:55:02,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 198 transitions. [2024-06-27 18:55:02,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-27 18:55:02,751 INFO L175 Difference]: Start difference. First operand has 212 places, 416 transitions, 5808 flow. Second operand 9 states and 198 transitions. [2024-06-27 18:55:02,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 477 transitions, 7091 flow [2024-06-27 18:55:03,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 477 transitions, 6860 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 18:55:03,283 INFO L231 Difference]: Finished difference. Result has 216 places, 422 transitions, 5780 flow [2024-06-27 18:55:03,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5577, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5780, PETRI_PLACES=216, PETRI_TRANSITIONS=422} [2024-06-27 18:55:03,284 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 164 predicate places. [2024-06-27 18:55:03,284 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 422 transitions, 5780 flow [2024-06-27 18:55:03,284 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 18:55:03,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:03,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:03,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:55:03,285 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:03,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:03,285 INFO L85 PathProgramCache]: Analyzing trace with hash -266201568, now seen corresponding path program 4 times [2024-06-27 18:55:03,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:03,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650758877] [2024-06-27 18:55:03,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:03,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:04,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:04,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:04,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650758877] [2024-06-27 18:55:04,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650758877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:04,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:04,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:55:04,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451394458] [2024-06-27 18:55:04,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:04,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:55:04,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:04,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:55:04,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:55:04,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:55:04,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 422 transitions, 5780 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:04,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:04,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:55:04,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:05,883 INFO L124 PetriNetUnfolderBase]: 6789/10242 cut-off events. [2024-06-27 18:55:05,884 INFO L125 PetriNetUnfolderBase]: For 263040/263399 co-relation queries the response was YES. [2024-06-27 18:55:05,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74511 conditions, 10242 events. 6789/10242 cut-off events. For 263040/263399 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 60830 event pairs, 1505 based on Foata normal form. 46/9887 useless extension candidates. Maximal degree in co-relation 74406. Up to 8328 conditions per place. [2024-06-27 18:55:06,025 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 301 selfloop transitions, 119 changer transitions 0/483 dead transitions. [2024-06-27 18:55:06,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 483 transitions, 7125 flow [2024-06-27 18:55:06,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:55:06,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:55:06,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 18:55:06,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5570652173913043 [2024-06-27 18:55:06,027 INFO L175 Difference]: Start difference. First operand has 216 places, 422 transitions, 5780 flow. Second operand 8 states and 205 transitions. [2024-06-27 18:55:06,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 483 transitions, 7125 flow [2024-06-27 18:55:06,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 483 transitions, 7004 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-27 18:55:06,613 INFO L231 Difference]: Finished difference. Result has 219 places, 425 transitions, 5991 flow [2024-06-27 18:55:06,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5659, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5991, PETRI_PLACES=219, PETRI_TRANSITIONS=425} [2024-06-27 18:55:06,614 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 167 predicate places. [2024-06-27 18:55:06,614 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 425 transitions, 5991 flow [2024-06-27 18:55:06,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:06,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:06,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:06,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:55:06,615 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:06,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:06,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1397095505, now seen corresponding path program 2 times [2024-06-27 18:55:06,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:06,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387126860] [2024-06-27 18:55:06,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:06,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:07,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:07,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:07,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387126860] [2024-06-27 18:55:07,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387126860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:07,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:07,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:55:07,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854838747] [2024-06-27 18:55:07,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:07,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:55:07,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:07,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:55:07,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:55:07,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:55:07,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 425 transitions, 5991 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 18:55:07,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:07,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:55:07,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:09,220 INFO L124 PetriNetUnfolderBase]: 7203/10853 cut-off events. [2024-06-27 18:55:09,220 INFO L125 PetriNetUnfolderBase]: For 259575/259617 co-relation queries the response was YES. [2024-06-27 18:55:09,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78293 conditions, 10853 events. 7203/10853 cut-off events. For 259575/259617 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 64645 event pairs, 1597 based on Foata normal form. 32/10675 useless extension candidates. Maximal degree in co-relation 78187. Up to 9797 conditions per place. [2024-06-27 18:55:09,353 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 403 selfloop transitions, 88 changer transitions 0/498 dead transitions. [2024-06-27 18:55:09,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 498 transitions, 7595 flow [2024-06-27 18:55:09,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:55:09,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:55:09,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 204 transitions. [2024-06-27 18:55:09,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2024-06-27 18:55:09,355 INFO L175 Difference]: Start difference. First operand has 219 places, 425 transitions, 5991 flow. Second operand 9 states and 204 transitions. [2024-06-27 18:55:09,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 498 transitions, 7595 flow [2024-06-27 18:55:09,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 498 transitions, 7325 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 18:55:09,913 INFO L231 Difference]: Finished difference. Result has 223 places, 435 transitions, 6129 flow [2024-06-27 18:55:09,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5723, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6129, PETRI_PLACES=223, PETRI_TRANSITIONS=435} [2024-06-27 18:55:09,914 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 171 predicate places. [2024-06-27 18:55:09,914 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 435 transitions, 6129 flow [2024-06-27 18:55:09,914 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 18:55:09,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:09,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:09,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:55:09,915 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:09,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:09,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1512216685, now seen corresponding path program 3 times [2024-06-27 18:55:09,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:09,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624177782] [2024-06-27 18:55:09,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:09,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:10,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:10,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:10,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624177782] [2024-06-27 18:55:10,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624177782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:10,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:10,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:55:10,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130976043] [2024-06-27 18:55:10,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:10,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:55:10,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:10,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:55:10,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:55:10,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:55:10,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 435 transitions, 6129 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 18:55:10,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:10,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:55:10,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:12,715 INFO L124 PetriNetUnfolderBase]: 7245/10933 cut-off events. [2024-06-27 18:55:12,715 INFO L125 PetriNetUnfolderBase]: For 269370/269412 co-relation queries the response was YES. [2024-06-27 18:55:12,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79154 conditions, 10933 events. 7245/10933 cut-off events. For 269370/269412 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 65289 event pairs, 1697 based on Foata normal form. 32/10749 useless extension candidates. Maximal degree in co-relation 79046. Up to 9993 conditions per place. [2024-06-27 18:55:12,860 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 417 selfloop transitions, 82 changer transitions 0/506 dead transitions. [2024-06-27 18:55:12,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 506 transitions, 7545 flow [2024-06-27 18:55:12,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:55:12,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:55:12,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 223 transitions. [2024-06-27 18:55:12,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48478260869565215 [2024-06-27 18:55:12,861 INFO L175 Difference]: Start difference. First operand has 223 places, 435 transitions, 6129 flow. Second operand 10 states and 223 transitions. [2024-06-27 18:55:12,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 506 transitions, 7545 flow [2024-06-27 18:55:13,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 506 transitions, 7298 flow, removed 77 selfloop flow, removed 5 redundant places. [2024-06-27 18:55:13,536 INFO L231 Difference]: Finished difference. Result has 228 places, 438 transitions, 6148 flow [2024-06-27 18:55:13,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5920, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6148, PETRI_PLACES=228, PETRI_TRANSITIONS=438} [2024-06-27 18:55:13,536 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 176 predicate places. [2024-06-27 18:55:13,537 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 438 transitions, 6148 flow [2024-06-27 18:55:13,537 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 18:55:13,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:13,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:13,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:55:13,537 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:13,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:13,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1131071795, now seen corresponding path program 4 times [2024-06-27 18:55:13,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:13,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403058141] [2024-06-27 18:55:13,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:13,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:14,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:14,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:14,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403058141] [2024-06-27 18:55:14,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403058141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:14,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:14,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:55:14,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498370297] [2024-06-27 18:55:14,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:14,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:55:14,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:14,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:55:14,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:55:14,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:55:14,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 438 transitions, 6148 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 18:55:14,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:14,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:55:14,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:16,176 INFO L124 PetriNetUnfolderBase]: 7237/10912 cut-off events. [2024-06-27 18:55:16,176 INFO L125 PetriNetUnfolderBase]: For 268155/268197 co-relation queries the response was YES. [2024-06-27 18:55:16,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78569 conditions, 10912 events. 7237/10912 cut-off events. For 268155/268197 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 65142 event pairs, 1699 based on Foata normal form. 32/10731 useless extension candidates. Maximal degree in co-relation 78459. Up to 10045 conditions per place. [2024-06-27 18:55:16,315 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 433 selfloop transitions, 59 changer transitions 0/499 dead transitions. [2024-06-27 18:55:16,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 499 transitions, 7444 flow [2024-06-27 18:55:16,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:55:16,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:55:16,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 201 transitions. [2024-06-27 18:55:16,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855072463768116 [2024-06-27 18:55:16,316 INFO L175 Difference]: Start difference. First operand has 228 places, 438 transitions, 6148 flow. Second operand 9 states and 201 transitions. [2024-06-27 18:55:16,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 499 transitions, 7444 flow [2024-06-27 18:55:16,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 499 transitions, 7217 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-27 18:55:16,969 INFO L231 Difference]: Finished difference. Result has 229 places, 439 transitions, 6063 flow [2024-06-27 18:55:16,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5923, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6063, PETRI_PLACES=229, PETRI_TRANSITIONS=439} [2024-06-27 18:55:16,970 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 177 predicate places. [2024-06-27 18:55:16,970 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 439 transitions, 6063 flow [2024-06-27 18:55:16,970 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 18:55:16,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:16,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:16,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:55:16,971 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:16,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:16,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1130856314, now seen corresponding path program 5 times [2024-06-27 18:55:16,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:16,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134212435] [2024-06-27 18:55:16,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:16,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:17,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:17,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:17,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134212435] [2024-06-27 18:55:17,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134212435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:17,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:17,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:55:17,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795765721] [2024-06-27 18:55:17,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:17,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:55:17,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:17,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:55:17,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:55:17,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:55:17,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 439 transitions, 6063 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:17,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:17,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:55:17,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:19,704 INFO L124 PetriNetUnfolderBase]: 7019/10600 cut-off events. [2024-06-27 18:55:19,705 INFO L125 PetriNetUnfolderBase]: For 298007/298344 co-relation queries the response was YES. [2024-06-27 18:55:19,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77869 conditions, 10600 events. 7019/10600 cut-off events. For 298007/298344 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 63506 event pairs, 1376 based on Foata normal form. 50/10257 useless extension candidates. Maximal degree in co-relation 77758. Up to 8207 conditions per place. [2024-06-27 18:55:19,856 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 303 selfloop transitions, 131 changer transitions 0/502 dead transitions. [2024-06-27 18:55:19,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 502 transitions, 7593 flow [2024-06-27 18:55:19,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:55:19,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:55:19,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-27 18:55:19,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5489130434782609 [2024-06-27 18:55:19,863 INFO L175 Difference]: Start difference. First operand has 229 places, 439 transitions, 6063 flow. Second operand 8 states and 202 transitions. [2024-06-27 18:55:19,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 502 transitions, 7593 flow [2024-06-27 18:55:20,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 502 transitions, 7417 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 18:55:20,428 INFO L231 Difference]: Finished difference. Result has 229 places, 442 transitions, 6251 flow [2024-06-27 18:55:20,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5887, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6251, PETRI_PLACES=229, PETRI_TRANSITIONS=442} [2024-06-27 18:55:20,429 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 177 predicate places. [2024-06-27 18:55:20,429 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 442 transitions, 6251 flow [2024-06-27 18:55:20,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:20,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:20,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:20,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:55:20,430 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:20,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:20,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1387564586, now seen corresponding path program 1 times [2024-06-27 18:55:20,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:20,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971029014] [2024-06-27 18:55:20,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:20,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:21,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:21,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:21,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971029014] [2024-06-27 18:55:21,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971029014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:21,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:21,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:55:21,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185663946] [2024-06-27 18:55:21,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:21,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:55:21,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:21,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:55:21,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:55:21,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:55:21,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 442 transitions, 6251 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 18:55:21,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:21,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:55:21,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:23,234 INFO L124 PetriNetUnfolderBase]: 7380/11110 cut-off events. [2024-06-27 18:55:23,234 INFO L125 PetriNetUnfolderBase]: For 289070/289094 co-relation queries the response was YES. [2024-06-27 18:55:23,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81370 conditions, 11110 events. 7380/11110 cut-off events. For 289070/289094 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 66254 event pairs, 1590 based on Foata normal form. 12/10905 useless extension candidates. Maximal degree in co-relation 81259. Up to 9514 conditions per place. [2024-06-27 18:55:23,382 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 344 selfloop transitions, 145 changer transitions 0/496 dead transitions. [2024-06-27 18:55:23,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 496 transitions, 7500 flow [2024-06-27 18:55:23,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:55:23,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:55:23,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 207 transitions. [2024-06-27 18:55:23,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:55:23,384 INFO L175 Difference]: Start difference. First operand has 229 places, 442 transitions, 6251 flow. Second operand 9 states and 207 transitions. [2024-06-27 18:55:23,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 496 transitions, 7500 flow [2024-06-27 18:55:24,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 496 transitions, 7172 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-27 18:55:24,086 INFO L231 Difference]: Finished difference. Result has 232 places, 445 transitions, 6267 flow [2024-06-27 18:55:24,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5935, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6267, PETRI_PLACES=232, PETRI_TRANSITIONS=445} [2024-06-27 18:55:24,086 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 180 predicate places. [2024-06-27 18:55:24,086 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 445 transitions, 6267 flow [2024-06-27 18:55:24,087 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 18:55:24,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:24,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:24,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:55:24,087 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:24,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:24,088 INFO L85 PathProgramCache]: Analyzing trace with hash -23182887, now seen corresponding path program 1 times [2024-06-27 18:55:24,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:24,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39721489] [2024-06-27 18:55:24,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:24,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:24,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:24,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:24,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39721489] [2024-06-27 18:55:24,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39721489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:24,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:24,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:55:24,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843759050] [2024-06-27 18:55:24,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:24,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:55:24,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:24,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:55:24,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:55:25,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:55:25,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 445 transitions, 6267 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:25,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:25,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:55:25,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:27,363 INFO L124 PetriNetUnfolderBase]: 7627/11462 cut-off events. [2024-06-27 18:55:27,363 INFO L125 PetriNetUnfolderBase]: For 299127/299133 co-relation queries the response was YES. [2024-06-27 18:55:27,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83474 conditions, 11462 events. 7627/11462 cut-off events. For 299127/299133 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 68273 event pairs, 1842 based on Foata normal form. 8/11259 useless extension candidates. Maximal degree in co-relation 83362. Up to 10469 conditions per place. [2024-06-27 18:55:27,503 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 459 selfloop transitions, 71 changer transitions 0/537 dead transitions. [2024-06-27 18:55:27,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 537 transitions, 8340 flow [2024-06-27 18:55:27,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:55:27,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:55:27,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 214 transitions. [2024-06-27 18:55:27,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4652173913043478 [2024-06-27 18:55:27,505 INFO L175 Difference]: Start difference. First operand has 232 places, 445 transitions, 6267 flow. Second operand 10 states and 214 transitions. [2024-06-27 18:55:27,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 537 transitions, 8340 flow [2024-06-27 18:55:28,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 537 transitions, 8004 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 18:55:28,106 INFO L231 Difference]: Finished difference. Result has 240 places, 482 transitions, 6951 flow [2024-06-27 18:55:28,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5965, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6951, PETRI_PLACES=240, PETRI_TRANSITIONS=482} [2024-06-27 18:55:28,108 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 188 predicate places. [2024-06-27 18:55:28,108 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 482 transitions, 6951 flow [2024-06-27 18:55:28,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:28,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:28,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:28,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:55:28,111 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:28,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:28,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1412151463, now seen corresponding path program 2 times [2024-06-27 18:55:28,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:28,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980168564] [2024-06-27 18:55:28,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:28,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:28,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:28,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:28,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980168564] [2024-06-27 18:55:28,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980168564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:28,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:28,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:55:28,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422224054] [2024-06-27 18:55:28,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:28,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:55:28,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:28,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:55:28,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:55:29,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:55:29,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 482 transitions, 6951 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:29,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:29,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:55:29,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:31,385 INFO L124 PetriNetUnfolderBase]: 7929/11933 cut-off events. [2024-06-27 18:55:31,386 INFO L125 PetriNetUnfolderBase]: For 327199/327207 co-relation queries the response was YES. [2024-06-27 18:55:31,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88063 conditions, 11933 events. 7929/11933 cut-off events. For 327199/327207 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 71816 event pairs, 2189 based on Foata normal form. 12/11742 useless extension candidates. Maximal degree in co-relation 87945. Up to 10800 conditions per place. [2024-06-27 18:55:31,547 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 472 selfloop transitions, 118 changer transitions 0/597 dead transitions. [2024-06-27 18:55:31,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 597 transitions, 9501 flow [2024-06-27 18:55:31,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:55:31,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:55:31,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 224 transitions. [2024-06-27 18:55:31,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48695652173913045 [2024-06-27 18:55:31,549 INFO L175 Difference]: Start difference. First operand has 240 places, 482 transitions, 6951 flow. Second operand 10 states and 224 transitions. [2024-06-27 18:55:31,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 597 transitions, 9501 flow [2024-06-27 18:55:32,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 597 transitions, 9159 flow, removed 170 selfloop flow, removed 1 redundant places. [2024-06-27 18:55:32,309 INFO L231 Difference]: Finished difference. Result has 253 places, 541 transitions, 8181 flow [2024-06-27 18:55:32,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6777, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8181, PETRI_PLACES=253, PETRI_TRANSITIONS=541} [2024-06-27 18:55:32,311 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 201 predicate places. [2024-06-27 18:55:32,311 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 541 transitions, 8181 flow [2024-06-27 18:55:32,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:32,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:32,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:32,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:55:32,311 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:32,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:32,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1660789181, now seen corresponding path program 3 times [2024-06-27 18:55:32,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:32,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047890456] [2024-06-27 18:55:32,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:32,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:33,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:33,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:33,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047890456] [2024-06-27 18:55:33,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047890456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:33,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:33,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:55:33,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077118091] [2024-06-27 18:55:33,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:33,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:55:33,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:33,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:55:33,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:55:33,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:55:33,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 541 transitions, 8181 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:33,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:33,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:55:33,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:35,731 INFO L124 PetriNetUnfolderBase]: 8345/12625 cut-off events. [2024-06-27 18:55:35,731 INFO L125 PetriNetUnfolderBase]: For 363081/363342 co-relation queries the response was YES. [2024-06-27 18:55:35,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95069 conditions, 12625 events. 8345/12625 cut-off events. For 363081/363342 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 76974 event pairs, 1881 based on Foata normal form. 226/12616 useless extension candidates. Maximal degree in co-relation 94944. Up to 10740 conditions per place. [2024-06-27 18:55:35,900 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 459 selfloop transitions, 150 changer transitions 0/665 dead transitions. [2024-06-27 18:55:35,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 665 transitions, 10956 flow [2024-06-27 18:55:35,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:55:35,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:55:35,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-27 18:55:35,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5144927536231884 [2024-06-27 18:55:35,902 INFO L175 Difference]: Start difference. First operand has 253 places, 541 transitions, 8181 flow. Second operand 9 states and 213 transitions. [2024-06-27 18:55:35,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 665 transitions, 10956 flow [2024-06-27 18:55:36,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 665 transitions, 10753 flow, removed 96 selfloop flow, removed 2 redundant places. [2024-06-27 18:55:36,949 INFO L231 Difference]: Finished difference. Result has 264 places, 609 transitions, 9802 flow [2024-06-27 18:55:36,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7986, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9802, PETRI_PLACES=264, PETRI_TRANSITIONS=609} [2024-06-27 18:55:36,950 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 212 predicate places. [2024-06-27 18:55:36,950 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 609 transitions, 9802 flow [2024-06-27 18:55:36,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:36,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:36,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:36,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:55:36,951 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:36,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:36,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1259616725, now seen corresponding path program 4 times [2024-06-27 18:55:36,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:36,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391067231] [2024-06-27 18:55:36,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:36,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:37,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:37,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:37,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391067231] [2024-06-27 18:55:37,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391067231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:37,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:37,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:55:37,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408007259] [2024-06-27 18:55:37,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:37,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:55:37,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:37,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:55:37,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:55:37,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:55:37,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 609 transitions, 9802 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:37,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:37,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:55:37,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:40,446 INFO L124 PetriNetUnfolderBase]: 8533/12907 cut-off events. [2024-06-27 18:55:40,446 INFO L125 PetriNetUnfolderBase]: For 382634/382861 co-relation queries the response was YES. [2024-06-27 18:55:40,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99271 conditions, 12907 events. 8533/12907 cut-off events. For 382634/382861 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 78977 event pairs, 1909 based on Foata normal form. 184/12856 useless extension candidates. Maximal degree in co-relation 99140. Up to 10788 conditions per place. [2024-06-27 18:55:40,650 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 466 selfloop transitions, 153 changer transitions 0/675 dead transitions. [2024-06-27 18:55:40,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 675 transitions, 11588 flow [2024-06-27 18:55:40,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:55:40,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:55:40,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-27 18:55:40,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-27 18:55:40,652 INFO L175 Difference]: Start difference. First operand has 264 places, 609 transitions, 9802 flow. Second operand 9 states and 216 transitions. [2024-06-27 18:55:40,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 675 transitions, 11588 flow [2024-06-27 18:55:41,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 675 transitions, 11449 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-27 18:55:41,871 INFO L231 Difference]: Finished difference. Result has 271 places, 616 transitions, 10176 flow [2024-06-27 18:55:41,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9663, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10176, PETRI_PLACES=271, PETRI_TRANSITIONS=616} [2024-06-27 18:55:41,872 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 219 predicate places. [2024-06-27 18:55:41,872 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 616 transitions, 10176 flow [2024-06-27 18:55:41,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:41,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:41,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:41,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:55:41,873 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:41,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:41,873 INFO L85 PathProgramCache]: Analyzing trace with hash 812976663, now seen corresponding path program 5 times [2024-06-27 18:55:41,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:41,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220277669] [2024-06-27 18:55:41,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:41,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:42,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:42,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:42,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220277669] [2024-06-27 18:55:42,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220277669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:42,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:42,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:55:42,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727782930] [2024-06-27 18:55:42,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:42,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:55:42,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:42,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:55:42,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:55:42,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:55:42,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 616 transitions, 10176 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:42,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:42,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:55:42,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:46,191 INFO L124 PetriNetUnfolderBase]: 9144/13562 cut-off events. [2024-06-27 18:55:46,191 INFO L125 PetriNetUnfolderBase]: For 404327/404331 co-relation queries the response was YES. [2024-06-27 18:55:46,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106350 conditions, 13562 events. 9144/13562 cut-off events. For 404327/404331 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 80984 event pairs, 2086 based on Foata normal form. 8/13409 useless extension candidates. Maximal degree in co-relation 106217. Up to 12245 conditions per place. [2024-06-27 18:55:46,505 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 546 selfloop transitions, 176 changer transitions 0/729 dead transitions. [2024-06-27 18:55:46,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 729 transitions, 12675 flow [2024-06-27 18:55:46,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:55:46,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:55:46,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 223 transitions. [2024-06-27 18:55:46,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48478260869565215 [2024-06-27 18:55:46,507 INFO L175 Difference]: Start difference. First operand has 271 places, 616 transitions, 10176 flow. Second operand 10 states and 223 transitions. [2024-06-27 18:55:46,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 729 transitions, 12675 flow [2024-06-27 18:55:47,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 729 transitions, 12481 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-27 18:55:47,755 INFO L231 Difference]: Finished difference. Result has 280 places, 675 transitions, 11342 flow [2024-06-27 18:55:47,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9982, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11342, PETRI_PLACES=280, PETRI_TRANSITIONS=675} [2024-06-27 18:55:47,756 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 228 predicate places. [2024-06-27 18:55:47,756 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 675 transitions, 11342 flow [2024-06-27 18:55:47,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:47,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:47,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:47,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:55:47,757 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:47,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:47,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1225714015, now seen corresponding path program 6 times [2024-06-27 18:55:47,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:47,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522693295] [2024-06-27 18:55:47,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:47,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:48,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:48,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:48,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522693295] [2024-06-27 18:55:48,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522693295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:48,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:48,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:55:48,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42070135] [2024-06-27 18:55:48,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:48,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:55:48,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:48,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:55:48,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:55:48,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:55:48,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 675 transitions, 11342 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:48,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:48,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:55:48,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:52,771 INFO L124 PetriNetUnfolderBase]: 9356/13900 cut-off events. [2024-06-27 18:55:52,771 INFO L125 PetriNetUnfolderBase]: For 432128/432130 co-relation queries the response was YES. [2024-06-27 18:55:52,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112425 conditions, 13900 events. 9356/13900 cut-off events. For 432128/432130 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 83535 event pairs, 2542 based on Foata normal form. 6/13737 useless extension candidates. Maximal degree in co-relation 112287. Up to 12836 conditions per place. [2024-06-27 18:55:53,006 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 612 selfloop transitions, 141 changer transitions 0/760 dead transitions. [2024-06-27 18:55:53,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 760 transitions, 13884 flow [2024-06-27 18:55:53,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:55:53,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:55:53,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 225 transitions. [2024-06-27 18:55:53,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-06-27 18:55:53,008 INFO L175 Difference]: Start difference. First operand has 280 places, 675 transitions, 11342 flow. Second operand 10 states and 225 transitions. [2024-06-27 18:55:53,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 760 transitions, 13884 flow [2024-06-27 18:55:54,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 760 transitions, 13524 flow, removed 113 selfloop flow, removed 5 redundant places. [2024-06-27 18:55:54,571 INFO L231 Difference]: Finished difference. Result has 287 places, 704 transitions, 12096 flow [2024-06-27 18:55:54,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10990, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12096, PETRI_PLACES=287, PETRI_TRANSITIONS=704} [2024-06-27 18:55:54,572 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 235 predicate places. [2024-06-27 18:55:54,572 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 704 transitions, 12096 flow [2024-06-27 18:55:54,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:54,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:54,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:54,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:55:54,573 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:54,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:54,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1224392485, now seen corresponding path program 7 times [2024-06-27 18:55:54,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:54,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929703807] [2024-06-27 18:55:54,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:54,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:55,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:55,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:55,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929703807] [2024-06-27 18:55:55,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929703807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:55,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:55,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:55:55,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590326086] [2024-06-27 18:55:55,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:55,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:55:55,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:55,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:55:55,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:55:55,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:55:55,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 704 transitions, 12096 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:55,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:55,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:55:55,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:59,181 INFO L124 PetriNetUnfolderBase]: 9492/14092 cut-off events. [2024-06-27 18:55:59,181 INFO L125 PetriNetUnfolderBase]: For 450964/450966 co-relation queries the response was YES. [2024-06-27 18:55:59,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114946 conditions, 14092 events. 9492/14092 cut-off events. For 450964/450966 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 84911 event pairs, 2501 based on Foata normal form. 6/13929 useless extension candidates. Maximal degree in co-relation 114805. Up to 12892 conditions per place. [2024-06-27 18:55:59,392 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 615 selfloop transitions, 149 changer transitions 0/771 dead transitions. [2024-06-27 18:55:59,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 771 transitions, 14190 flow [2024-06-27 18:55:59,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:55:59,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:55:59,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 226 transitions. [2024-06-27 18:55:59,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49130434782608695 [2024-06-27 18:55:59,394 INFO L175 Difference]: Start difference. First operand has 287 places, 704 transitions, 12096 flow. Second operand 10 states and 226 transitions. [2024-06-27 18:55:59,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 771 transitions, 14190 flow [2024-06-27 18:56:00,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 771 transitions, 13842 flow, removed 65 selfloop flow, removed 5 redundant places. [2024-06-27 18:56:00,942 INFO L231 Difference]: Finished difference. Result has 293 places, 715 transitions, 12364 flow [2024-06-27 18:56:00,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=11748, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12364, PETRI_PLACES=293, PETRI_TRANSITIONS=715} [2024-06-27 18:56:00,943 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 241 predicate places. [2024-06-27 18:56:00,943 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 715 transitions, 12364 flow [2024-06-27 18:56:00,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:00,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:00,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:00,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:56:00,944 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:00,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:00,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1382458231, now seen corresponding path program 8 times [2024-06-27 18:56:00,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:00,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961714362] [2024-06-27 18:56:00,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:00,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:01,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:01,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:01,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961714362] [2024-06-27 18:56:01,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961714362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:01,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:01,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:56:01,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281427318] [2024-06-27 18:56:01,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:01,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:56:01,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:01,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:56:01,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:56:01,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:56:01,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 715 transitions, 12364 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:01,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:01,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:56:01,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:05,683 INFO L124 PetriNetUnfolderBase]: 9655/14392 cut-off events. [2024-06-27 18:56:05,683 INFO L125 PetriNetUnfolderBase]: For 473385/473389 co-relation queries the response was YES. [2024-06-27 18:56:05,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117340 conditions, 14392 events. 9655/14392 cut-off events. For 473385/473389 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 87041 event pairs, 2197 based on Foata normal form. 8/14197 useless extension candidates. Maximal degree in co-relation 117197. Up to 13083 conditions per place. [2024-06-27 18:56:05,979 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 630 selfloop transitions, 192 changer transitions 0/829 dead transitions. [2024-06-27 18:56:05,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 829 transitions, 15175 flow [2024-06-27 18:56:05,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:56:05,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:56:05,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 225 transitions. [2024-06-27 18:56:05,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-06-27 18:56:05,981 INFO L175 Difference]: Start difference. First operand has 293 places, 715 transitions, 12364 flow. Second operand 10 states and 225 transitions. [2024-06-27 18:56:05,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 829 transitions, 15175 flow [2024-06-27 18:56:07,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 829 transitions, 14788 flow, removed 104 selfloop flow, removed 6 redundant places. [2024-06-27 18:56:07,603 INFO L231 Difference]: Finished difference. Result has 299 places, 767 transitions, 13362 flow [2024-06-27 18:56:07,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=11989, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13362, PETRI_PLACES=299, PETRI_TRANSITIONS=767} [2024-06-27 18:56:07,604 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 247 predicate places. [2024-06-27 18:56:07,604 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 767 transitions, 13362 flow [2024-06-27 18:56:07,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:07,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:07,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:07,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:56:07,605 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:07,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:07,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1467482551, now seen corresponding path program 9 times [2024-06-27 18:56:07,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:07,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136813097] [2024-06-27 18:56:07,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:07,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:08,462 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 18:56:08,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:08,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136813097] [2024-06-27 18:56:08,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136813097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:08,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:08,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:56:08,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290603081] [2024-06-27 18:56:08,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:08,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:56:08,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:08,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:56:08,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:56:08,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:56:08,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 767 transitions, 13362 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:08,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:08,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:56:08,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:12,594 INFO L124 PetriNetUnfolderBase]: 9981/14731 cut-off events. [2024-06-27 18:56:12,594 INFO L125 PetriNetUnfolderBase]: For 499384/499388 co-relation queries the response was YES. [2024-06-27 18:56:12,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123512 conditions, 14731 events. 9981/14731 cut-off events. For 499384/499388 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 88122 event pairs, 2328 based on Foata normal form. 8/14575 useless extension candidates. Maximal degree in co-relation 123365. Up to 13627 conditions per place. [2024-06-27 18:56:12,843 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 693 selfloop transitions, 177 changer transitions 0/877 dead transitions. [2024-06-27 18:56:12,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 877 transitions, 16652 flow [2024-06-27 18:56:12,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:56:12,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:56:12,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 226 transitions. [2024-06-27 18:56:12,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49130434782608695 [2024-06-27 18:56:12,845 INFO L175 Difference]: Start difference. First operand has 299 places, 767 transitions, 13362 flow. Second operand 10 states and 226 transitions. [2024-06-27 18:56:12,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 877 transitions, 16652 flow [2024-06-27 18:56:14,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 877 transitions, 16467 flow, removed 87 selfloop flow, removed 2 redundant places. [2024-06-27 18:56:14,758 INFO L231 Difference]: Finished difference. Result has 309 places, 816 transitions, 14906 flow [2024-06-27 18:56:14,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=13177, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=767, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14906, PETRI_PLACES=309, PETRI_TRANSITIONS=816} [2024-06-27 18:56:14,759 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 257 predicate places. [2024-06-27 18:56:14,759 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 816 transitions, 14906 flow [2024-06-27 18:56:14,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:14,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:14,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:14,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:56:14,761 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:14,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:14,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1467477901, now seen corresponding path program 10 times [2024-06-27 18:56:14,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:14,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187195980] [2024-06-27 18:56:14,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:14,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:15,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:15,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:15,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187195980] [2024-06-27 18:56:15,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187195980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:15,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:15,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:56:15,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266079280] [2024-06-27 18:56:15,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:15,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:56:15,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:15,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:56:15,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:56:15,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:56:15,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 816 transitions, 14906 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:15,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:15,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:56:15,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:19,940 INFO L124 PetriNetUnfolderBase]: 10195/15158 cut-off events. [2024-06-27 18:56:19,940 INFO L125 PetriNetUnfolderBase]: For 532813/532817 co-relation queries the response was YES. [2024-06-27 18:56:20,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127806 conditions, 15158 events. 10195/15158 cut-off events. For 532813/532817 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 91929 event pairs, 2345 based on Foata normal form. 8/14963 useless extension candidates. Maximal degree in co-relation 127655. Up to 13694 conditions per place. [2024-06-27 18:56:20,222 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 697 selfloop transitions, 193 changer transitions 0/897 dead transitions. [2024-06-27 18:56:20,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 897 transitions, 17407 flow [2024-06-27 18:56:20,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:56:20,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:56:20,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 227 transitions. [2024-06-27 18:56:20,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934782608695652 [2024-06-27 18:56:20,224 INFO L175 Difference]: Start difference. First operand has 309 places, 816 transitions, 14906 flow. Second operand 10 states and 227 transitions. [2024-06-27 18:56:20,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 897 transitions, 17407 flow [2024-06-27 18:56:22,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 897 transitions, 17019 flow, removed 72 selfloop flow, removed 5 redundant places. [2024-06-27 18:56:22,381 INFO L231 Difference]: Finished difference. Result has 315 places, 836 transitions, 15358 flow [2024-06-27 18:56:22,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=14518, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=816, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15358, PETRI_PLACES=315, PETRI_TRANSITIONS=836} [2024-06-27 18:56:22,382 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 263 predicate places. [2024-06-27 18:56:22,382 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 836 transitions, 15358 flow [2024-06-27 18:56:22,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:22,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:22,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:22,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:56:22,383 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:22,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:22,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1261089243, now seen corresponding path program 11 times [2024-06-27 18:56:22,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:22,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786725698] [2024-06-27 18:56:22,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:22,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:23,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:23,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:23,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786725698] [2024-06-27 18:56:23,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786725698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:23,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:23,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:56:23,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565944907] [2024-06-27 18:56:23,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:23,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:56:23,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:23,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:56:23,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:56:23,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:56:23,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 836 transitions, 15358 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:23,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:23,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:56:23,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:27,609 INFO L124 PetriNetUnfolderBase]: 10271/15198 cut-off events. [2024-06-27 18:56:27,609 INFO L125 PetriNetUnfolderBase]: For 564292/564294 co-relation queries the response was YES. [2024-06-27 18:56:27,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130345 conditions, 15198 events. 10271/15198 cut-off events. For 564292/564294 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 92076 event pairs, 2566 based on Foata normal form. 6/15036 useless extension candidates. Maximal degree in co-relation 130192. Up to 13224 conditions per place.