./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix052_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix052_tso.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix052_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix052_tso.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:37:45,273 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:37:45,342 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:37:45,348 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:37:45,349 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:37:45,367 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:37:45,368 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:37:45,368 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:37:45,369 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:37:45,372 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:37:45,373 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:37:45,373 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:37:45,374 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:37:45,375 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:37:45,375 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:37:45,375 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:37:45,375 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:37:45,376 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:37:45,376 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:37:45,376 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:37:45,376 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:37:45,377 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:37:45,377 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:37:45,377 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:37:45,377 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:37:45,378 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:37:45,378 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:37:45,378 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:37:45,378 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:37:45,379 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:37:45,379 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:37:45,380 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:37:45,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:37:45,380 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:37:45,380 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:37:45,380 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:37:45,381 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:37:45,381 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:37:45,381 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:37:45,381 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:37:45,381 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:37:45,382 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:37:45,382 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:37:45,382 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:37:45,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:37:45,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:37:45,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:37:45,626 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:37:45,627 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:37:45,628 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix052_tso.oepc.yml/witness.yml [2024-06-27 18:37:45,826 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:37:45,826 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:37:45,826 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix052_tso.oepc.i [2024-06-27 18:37:46,937 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:37:47,146 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:37:47,147 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix052_tso.oepc.i [2024-06-27 18:37:47,193 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/147d551c0/4a2c1b6b840a49b0a75f11ed40be92ed/FLAGa4846a834 [2024-06-27 18:37:47,204 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/147d551c0/4a2c1b6b840a49b0a75f11ed40be92ed [2024-06-27 18:37:47,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:37:47,206 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:37:47,209 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:37:47,210 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:37:47,213 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:37:47,214 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:37:45" (1/2) ... [2024-06-27 18:37:47,215 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d40c8b4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:37:47, skipping insertion in model container [2024-06-27 18:37:47,215 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:37:45" (1/2) ... [2024-06-27 18:37:47,217 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@59407cc2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:37:47, skipping insertion in model container [2024-06-27 18:37:47,217 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:37:47" (2/2) ... [2024-06-27 18:37:47,218 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d40c8b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:37:47, skipping insertion in model container [2024-06-27 18:37:47,218 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:37:47" (2/2) ... [2024-06-27 18:37:47,219 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:37:47,281 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:37:47,282 INFO L97 edCorrectnessWitness]: Location invariant before [L825-L825] (((((((((((((((((! multithreaded || x$r_buff1_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-27 18:37:47,282 INFO L97 edCorrectnessWitness]: Location invariant before [L823-L823] (((((((((((((((((! multithreaded || x$r_buff1_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-27 18:37:47,282 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] (((((((((((((((((! multithreaded || x$r_buff1_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-27 18:37:47,282 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:37:47,283 INFO L106 edCorrectnessWitness]: ghost_update [L821-L821] multithreaded = 1; [2024-06-27 18:37:47,318 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:37:47,453 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/mix052_tso.oepc.i[949,962] [2024-06-27 18:37:47,599 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:37:47,610 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:37:47,640 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/mix052_tso.oepc.i[949,962] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:37:47,695 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:37:47,735 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:37:47,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:37:47 WrapperNode [2024-06-27 18:37:47,738 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:37:47,739 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:37:47,739 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:37:47,739 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:37:47,745 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:37:47" (1/1) ... [2024-06-27 18:37:47,757 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:37:47" (1/1) ... [2024-06-27 18:37:47,782 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 140 [2024-06-27 18:37:47,783 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:37:47,783 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:37:47,783 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:37:47,784 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:37:47,792 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:37:47" (1/1) ... [2024-06-27 18:37:47,793 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:37:47" (1/1) ... [2024-06-27 18:37:47,796 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:37:47" (1/1) ... [2024-06-27 18:37:47,809 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 18:37:47,809 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:37:47" (1/1) ... [2024-06-27 18:37:47,810 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:37:47" (1/1) ... [2024-06-27 18:37:47,816 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:37:47" (1/1) ... [2024-06-27 18:37:47,818 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:37:47" (1/1) ... [2024-06-27 18:37:47,819 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:37:47" (1/1) ... [2024-06-27 18:37:47,821 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:37:47" (1/1) ... [2024-06-27 18:37:47,823 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:37:47,824 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:37:47,824 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:37:47,824 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:37:47,825 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:37:47" (1/1) ... [2024-06-27 18:37:47,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:37:47,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:37:47,902 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 18:37:47,913 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 18:37:47,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:37:47,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:37:47,938 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:37:47,939 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:37:47,939 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:37:47,939 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:37:47,939 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:37:47,939 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:37:47,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:37:47,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:37:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:37:47,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:37:47,942 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 18:37:48,043 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:37:48,044 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:37:48,310 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:37:48,310 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:37:48,471 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:37:48,471 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:37:48,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:37:48 BoogieIcfgContainer [2024-06-27 18:37:48,472 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:37:48,474 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:37:48,474 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:37:48,477 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:37:48,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:37:45" (1/4) ... [2024-06-27 18:37:48,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6531d583 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:37:48, skipping insertion in model container [2024-06-27 18:37:48,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:37:47" (2/4) ... [2024-06-27 18:37:48,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6531d583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:37:48, skipping insertion in model container [2024-06-27 18:37:48,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:37:47" (3/4) ... [2024-06-27 18:37:48,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6531d583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:37:48, skipping insertion in model container [2024-06-27 18:37:48,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:37:48" (4/4) ... [2024-06-27 18:37:48,480 INFO L112 eAbstractionObserver]: Analyzing ICFG mix052_tso.oepc.i [2024-06-27 18:37:48,493 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:37:48,493 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:37:48,494 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:37:48,530 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:37:48,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 18:37:48,590 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-27 18:37:48,590 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:37:48,593 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 74 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 18:37:48,593 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 18:37:48,597 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 43 transitions, 95 flow [2024-06-27 18:37:48,607 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:37:48,613 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;@2a734967, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:37:48,613 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:37:48,618 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:37:48,618 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:37:48,618 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:37:48,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:48,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:37:48,620 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 18:37:48,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:48,668 INFO L85 PathProgramCache]: Analyzing trace with hash 354753175, now seen corresponding path program 1 times [2024-06-27 18:37:48,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:48,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478689631] [2024-06-27 18:37:48,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:48,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:49,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:49,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:49,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478689631] [2024-06-27 18:37:49,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478689631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:49,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:49,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:37:49,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330083057] [2024-06-27 18:37:49,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:49,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:37:49,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:49,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:37:49,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:37:49,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 18:37:49,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:49,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:49,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 18:37:49,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:50,395 INFO L124 PetriNetUnfolderBase]: 3625/5500 cut-off events. [2024-06-27 18:37:50,396 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-27 18:37:50,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10822 conditions, 5500 events. 3625/5500 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 32005 event pairs, 2115 based on Foata normal form. 181/5363 useless extension candidates. Maximal degree in co-relation 10810. Up to 5218 conditions per place. [2024-06-27 18:37:50,425 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 42 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-27 18:37:50,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 225 flow [2024-06-27 18:37:50,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:37:50,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:37:50,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-06-27 18:37:50,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6811594202898551 [2024-06-27 18:37:50,435 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 95 flow. Second operand 3 states and 94 transitions. [2024-06-27 18:37:50,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 225 flow [2024-06-27 18:37:50,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 220 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:37:50,446 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 127 flow [2024-06-27 18:37:50,448 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 18:37:50,451 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-06-27 18:37:50,451 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 127 flow [2024-06-27 18:37:50,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:50,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:50,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:50,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:37:50,452 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 18:37:50,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:50,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1616673920, now seen corresponding path program 1 times [2024-06-27 18:37:50,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:50,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293914194] [2024-06-27 18:37:50,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:50,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:51,008 INFO 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 18:37:51,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:51,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293914194] [2024-06-27 18:37:51,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293914194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:51,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:51,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:37:51,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136277045] [2024-06-27 18:37:51,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:51,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:37:51,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:51,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:37:51,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:37:51,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:37:51,039 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 18:37:51,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:51,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:37:51,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:51,717 INFO L124 PetriNetUnfolderBase]: 4349/6412 cut-off events. [2024-06-27 18:37:51,718 INFO L125 PetriNetUnfolderBase]: For 891/891 co-relation queries the response was YES. [2024-06-27 18:37:51,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14250 conditions, 6412 events. 4349/6412 cut-off events. For 891/891 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 36508 event pairs, 2339 based on Foata normal form. 3/6066 useless extension candidates. Maximal degree in co-relation 14238. Up to 6202 conditions per place. [2024-06-27 18:37:51,746 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 55 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2024-06-27 18:37:51,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 74 transitions, 325 flow [2024-06-27 18:37:51,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:37:51,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:37:51,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-06-27 18:37:51,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6467391304347826 [2024-06-27 18:37:51,749 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 127 flow. Second operand 4 states and 119 transitions. [2024-06-27 18:37:51,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 74 transitions, 325 flow [2024-06-27 18:37:51,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 74 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:37:51,756 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 173 flow [2024-06-27 18:37:51,757 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=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-06-27 18:37:51,757 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-06-27 18:37:51,758 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 173 flow [2024-06-27 18:37:51,758 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 18:37:51,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:51,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:51,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:37:51,761 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 18:37:51,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:51,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1422714426, now seen corresponding path program 1 times [2024-06-27 18:37:51,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:51,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793765095] [2024-06-27 18:37:51,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:51,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:52,223 INFO 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 18:37:52,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:52,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793765095] [2024-06-27 18:37:52,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793765095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:52,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:52,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:37:52,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366178174] [2024-06-27 18:37:52,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:52,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:37:52,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:52,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:37:52,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:37:52,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:37:52,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 173 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 18:37:52,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:52,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:37:52,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:52,956 INFO L124 PetriNetUnfolderBase]: 4333/6916 cut-off events. [2024-06-27 18:37:52,957 INFO L125 PetriNetUnfolderBase]: For 2521/2521 co-relation queries the response was YES. [2024-06-27 18:37:52,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16182 conditions, 6916 events. 4333/6916 cut-off events. For 2521/2521 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 43678 event pairs, 1996 based on Foata normal form. 6/6398 useless extension candidates. Maximal degree in co-relation 16168. Up to 6151 conditions per place. [2024-06-27 18:37:52,991 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 67 selfloop transitions, 16 changer transitions 0/93 dead transitions. [2024-06-27 18:37:52,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 93 transitions, 484 flow [2024-06-27 18:37:52,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:37:52,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:37:52,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2024-06-27 18:37:52,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6217391304347826 [2024-06-27 18:37:52,993 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 173 flow. Second operand 5 states and 143 transitions. [2024-06-27 18:37:52,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 93 transitions, 484 flow [2024-06-27 18:37:52,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 93 transitions, 448 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-27 18:37:52,996 INFO L231 Difference]: Finished difference. Result has 60 places, 65 transitions, 296 flow [2024-06-27 18:37:52,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=296, PETRI_PLACES=60, PETRI_TRANSITIONS=65} [2024-06-27 18:37:52,997 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2024-06-27 18:37:52,997 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 65 transitions, 296 flow [2024-06-27 18:37:52,997 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 18:37:52,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:52,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:52,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:37:52,998 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 18:37:52,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:52,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1462284391, now seen corresponding path program 1 times [2024-06-27 18:37:52,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:52,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997844902] [2024-06-27 18:37:52,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:52,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:53,065 INFO 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 18:37:53,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:53,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997844902] [2024-06-27 18:37:53,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997844902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:53,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:53,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:37:53,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346198859] [2024-06-27 18:37:53,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:53,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:37:53,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:53,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:37:53,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:37:53,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 46 [2024-06-27 18:37:53,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 65 transitions, 296 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 18:37:53,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:53,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 46 [2024-06-27 18:37:53,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:53,382 INFO L124 PetriNetUnfolderBase]: 1235/2489 cut-off events. [2024-06-27 18:37:53,382 INFO L125 PetriNetUnfolderBase]: For 1229/1367 co-relation queries the response was YES. [2024-06-27 18:37:53,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5457 conditions, 2489 events. 1235/2489 cut-off events. For 1229/1367 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 18178 event pairs, 483 based on Foata normal form. 21/2372 useless extension candidates. Maximal degree in co-relation 5440. Up to 1589 conditions per place. [2024-06-27 18:37:53,393 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 35 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2024-06-27 18:37:53,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 72 transitions, 367 flow [2024-06-27 18:37:53,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:37:53,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:37:53,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-06-27 18:37:53,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7536231884057971 [2024-06-27 18:37:53,396 INFO L175 Difference]: Start difference. First operand has 60 places, 65 transitions, 296 flow. Second operand 3 states and 104 transitions. [2024-06-27 18:37:53,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 72 transitions, 367 flow [2024-06-27 18:37:53,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 72 transitions, 359 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-27 18:37:53,399 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 259 flow [2024-06-27 18:37:53,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2024-06-27 18:37:53,401 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-06-27 18:37:53,401 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 259 flow [2024-06-27 18:37:53,401 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 18:37:53,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:53,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:53,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:37:53,401 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 18:37:53,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:53,402 INFO L85 PathProgramCache]: Analyzing trace with hash -168275383, now seen corresponding path program 1 times [2024-06-27 18:37:53,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:53,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792378096] [2024-06-27 18:37:53,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:53,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:54,375 INFO 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 18:37:54,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:54,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792378096] [2024-06-27 18:37:54,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792378096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:54,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:54,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:37:54,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606078776] [2024-06-27 18:37:54,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:54,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:37:54,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:54,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:37:54,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:37:54,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:37:54,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 259 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 18:37:54,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:54,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:37:54,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:55,047 INFO L124 PetriNetUnfolderBase]: 3556/5699 cut-off events. [2024-06-27 18:37:55,048 INFO L125 PetriNetUnfolderBase]: For 5427/5427 co-relation queries the response was YES. [2024-06-27 18:37:55,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14406 conditions, 5699 events. 3556/5699 cut-off events. For 5427/5427 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 34311 event pairs, 1702 based on Foata normal form. 6/5522 useless extension candidates. Maximal degree in co-relation 14387. Up to 5018 conditions per place. [2024-06-27 18:37:55,072 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 69 selfloop transitions, 16 changer transitions 1/96 dead transitions. [2024-06-27 18:37:55,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 96 transitions, 529 flow [2024-06-27 18:37:55,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:37:55,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:37:55,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-27 18:37:55,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-27 18:37:55,075 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 259 flow. Second operand 6 states and 161 transitions. [2024-06-27 18:37:55,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 96 transitions, 529 flow [2024-06-27 18:37:55,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 96 transitions, 513 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:37:55,084 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 301 flow [2024-06-27 18:37:55,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=301, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-06-27 18:37:55,086 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 12 predicate places. [2024-06-27 18:37:55,088 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 301 flow [2024-06-27 18:37:55,088 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 18:37:55,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:55,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:55,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:37:55,089 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 18:37:55,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:55,089 INFO L85 PathProgramCache]: Analyzing trace with hash -802234893, now seen corresponding path program 1 times [2024-06-27 18:37:55,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:55,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457657491] [2024-06-27 18:37:55,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:55,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:55,576 INFO 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 18:37:55,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:55,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457657491] [2024-06-27 18:37:55,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457657491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:55,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:55,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:37:55,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3258109] [2024-06-27 18:37:55,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:55,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:37:55,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:55,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:37:55,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:37:55,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:37:55,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 301 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:55,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:55,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:37:55,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:56,111 INFO L124 PetriNetUnfolderBase]: 2957/4932 cut-off events. [2024-06-27 18:37:56,111 INFO L125 PetriNetUnfolderBase]: For 5708/5708 co-relation queries the response was YES. [2024-06-27 18:37:56,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12982 conditions, 4932 events. 2957/4932 cut-off events. For 5708/5708 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 30416 event pairs, 1512 based on Foata normal form. 2/4781 useless extension candidates. Maximal degree in co-relation 12961. Up to 4259 conditions per place. [2024-06-27 18:37:56,134 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 67 selfloop transitions, 9 changer transitions 0/85 dead transitions. [2024-06-27 18:37:56,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 85 transitions, 547 flow [2024-06-27 18:37:56,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:37:56,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:37:56,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-27 18:37:56,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508695652173913 [2024-06-27 18:37:56,136 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 301 flow. Second operand 5 states and 117 transitions. [2024-06-27 18:37:56,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 85 transitions, 547 flow [2024-06-27 18:37:56,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 85 transitions, 499 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 18:37:56,141 INFO L231 Difference]: Finished difference. Result has 65 places, 67 transitions, 346 flow [2024-06-27 18:37:56,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=346, PETRI_PLACES=65, PETRI_TRANSITIONS=67} [2024-06-27 18:37:56,141 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 13 predicate places. [2024-06-27 18:37:56,142 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 67 transitions, 346 flow [2024-06-27 18:37:56,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:56,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:56,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:56,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:37:56,142 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 18:37:56,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:56,143 INFO L85 PathProgramCache]: Analyzing trace with hash -952994840, now seen corresponding path program 1 times [2024-06-27 18:37:56,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:56,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141692296] [2024-06-27 18:37:56,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:56,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:56,659 INFO 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 18:37:56,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:56,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141692296] [2024-06-27 18:37:56,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141692296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:56,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:56,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:37:56,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165321043] [2024-06-27 18:37:56,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:56,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:37:56,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:56,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:37:56,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:37:56,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:37:56,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 67 transitions, 346 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 18:37:56,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:56,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:37:56,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:57,419 INFO L124 PetriNetUnfolderBase]: 3585/5757 cut-off events. [2024-06-27 18:37:57,419 INFO L125 PetriNetUnfolderBase]: For 8987/8987 co-relation queries the response was YES. [2024-06-27 18:37:57,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16267 conditions, 5757 events. 3585/5757 cut-off events. For 8987/8987 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 34701 event pairs, 1816 based on Foata normal form. 2/5576 useless extension candidates. Maximal degree in co-relation 16243. Up to 5118 conditions per place. [2024-06-27 18:37:57,451 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 80 selfloop transitions, 13 changer transitions 0/101 dead transitions. [2024-06-27 18:37:57,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 101 transitions, 648 flow [2024-06-27 18:37:57,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:37:57,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:37:57,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-27 18:37:57,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4963768115942029 [2024-06-27 18:37:57,453 INFO L175 Difference]: Start difference. First operand has 65 places, 67 transitions, 346 flow. Second operand 6 states and 137 transitions. [2024-06-27 18:37:57,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 101 transitions, 648 flow [2024-06-27 18:37:57,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 101 transitions, 631 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 18:37:57,460 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 428 flow [2024-06-27 18:37:57,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=428, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2024-06-27 18:37:57,461 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 18 predicate places. [2024-06-27 18:37:57,461 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 428 flow [2024-06-27 18:37:57,461 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 18:37:57,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:57,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:57,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:37:57,462 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 18:37:57,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:57,462 INFO L85 PathProgramCache]: Analyzing trace with hash 2146398866, now seen corresponding path program 2 times [2024-06-27 18:37:57,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:57,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002607911] [2024-06-27 18:37:57,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:57,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:58,011 INFO 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 18:37:58,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:58,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002607911] [2024-06-27 18:37:58,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002607911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:58,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:58,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:37:58,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58161298] [2024-06-27 18:37:58,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:58,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:37:58,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:58,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:37:58,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:37:58,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:37:58,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 428 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 18:37:58,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:58,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:37:58,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:58,738 INFO L124 PetriNetUnfolderBase]: 3588/5764 cut-off events. [2024-06-27 18:37:58,739 INFO L125 PetriNetUnfolderBase]: For 12520/12544 co-relation queries the response was YES. [2024-06-27 18:37:58,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17458 conditions, 5764 events. 3588/5764 cut-off events. For 12520/12544 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 34816 event pairs, 1719 based on Foata normal form. 18/5597 useless extension candidates. Maximal degree in co-relation 17431. Up to 5087 conditions per place. [2024-06-27 18:37:58,762 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 78 selfloop transitions, 18 changer transitions 0/104 dead transitions. [2024-06-27 18:37:58,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 104 transitions, 724 flow [2024-06-27 18:37:58,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:37:58,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:37:58,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-27 18:37:58,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:37:58,764 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 428 flow. Second operand 6 states and 138 transitions. [2024-06-27 18:37:58,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 104 transitions, 724 flow [2024-06-27 18:37:58,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 104 transitions, 693 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 18:37:58,771 INFO L231 Difference]: Finished difference. Result has 73 places, 77 transitions, 473 flow [2024-06-27 18:37:58,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=473, PETRI_PLACES=73, PETRI_TRANSITIONS=77} [2024-06-27 18:37:58,771 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 21 predicate places. [2024-06-27 18:37:58,771 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 77 transitions, 473 flow [2024-06-27 18:37:58,772 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 18:37:58,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:58,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:58,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:37:58,772 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 18:37:58,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:58,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2146407794, now seen corresponding path program 1 times [2024-06-27 18:37:58,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:58,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984518223] [2024-06-27 18:37:58,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:58,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:59,537 INFO 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 18:37:59,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:59,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984518223] [2024-06-27 18:37:59,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984518223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:59,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:59,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:37:59,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553919547] [2024-06-27 18:37:59,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:59,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:37:59,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:59,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:37:59,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:37:59,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:37:59,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 77 transitions, 473 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 18:37:59,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:59,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:37:59,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:00,260 INFO L124 PetriNetUnfolderBase]: 3667/6016 cut-off events. [2024-06-27 18:38:00,260 INFO L125 PetriNetUnfolderBase]: For 16166/16166 co-relation queries the response was YES. [2024-06-27 18:38:00,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18910 conditions, 6016 events. 3667/6016 cut-off events. For 16166/16166 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 37023 event pairs, 1767 based on Foata normal form. 2/5833 useless extension candidates. Maximal degree in co-relation 18882. Up to 5220 conditions per place. [2024-06-27 18:38:00,296 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 95 selfloop transitions, 16 changer transitions 0/119 dead transitions. [2024-06-27 18:38:00,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 119 transitions, 842 flow [2024-06-27 18:38:00,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:00,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:00,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-27 18:38:00,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937888198757764 [2024-06-27 18:38:00,298 INFO L175 Difference]: Start difference. First operand has 73 places, 77 transitions, 473 flow. Second operand 7 states and 159 transitions. [2024-06-27 18:38:00,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 119 transitions, 842 flow [2024-06-27 18:38:00,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 119 transitions, 789 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 18:38:00,310 INFO L231 Difference]: Finished difference. Result has 77 places, 84 transitions, 522 flow [2024-06-27 18:38:00,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=522, PETRI_PLACES=77, PETRI_TRANSITIONS=84} [2024-06-27 18:38:00,311 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 25 predicate places. [2024-06-27 18:38:00,311 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 84 transitions, 522 flow [2024-06-27 18:38:00,311 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 18:38:00,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:00,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:00,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:38:00,312 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 18:38:00,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:00,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1935681042, now seen corresponding path program 1 times [2024-06-27 18:38:00,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:00,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094329776] [2024-06-27 18:38:00,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:00,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:00,915 INFO 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 18:38:00,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:00,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094329776] [2024-06-27 18:38:00,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094329776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:00,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:00,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:38:00,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727014785] [2024-06-27 18:38:00,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:00,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:38:00,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:00,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:38:00,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:38:01,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:38:01,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 84 transitions, 522 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 18:38:01,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:01,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:38:01,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:01,810 INFO L124 PetriNetUnfolderBase]: 4245/6806 cut-off events. [2024-06-27 18:38:01,810 INFO L125 PetriNetUnfolderBase]: For 22627/22641 co-relation queries the response was YES. [2024-06-27 18:38:01,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23061 conditions, 6806 events. 4245/6806 cut-off events. For 22627/22641 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 41931 event pairs, 1708 based on Foata normal form. 4/6590 useless extension candidates. Maximal degree in co-relation 23031. Up to 5984 conditions per place. [2024-06-27 18:38:01,853 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 92 selfloop transitions, 29 changer transitions 0/130 dead transitions. [2024-06-27 18:38:01,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 130 transitions, 921 flow [2024-06-27 18:38:01,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:01,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:01,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-27 18:38:01,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515527950310559 [2024-06-27 18:38:01,855 INFO L175 Difference]: Start difference. First operand has 77 places, 84 transitions, 522 flow. Second operand 7 states and 166 transitions. [2024-06-27 18:38:01,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 130 transitions, 921 flow [2024-06-27 18:38:01,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 130 transitions, 874 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 18:38:01,871 INFO L231 Difference]: Finished difference. Result has 81 places, 93 transitions, 622 flow [2024-06-27 18:38:01,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=622, PETRI_PLACES=81, PETRI_TRANSITIONS=93} [2024-06-27 18:38:01,873 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 29 predicate places. [2024-06-27 18:38:01,873 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 93 transitions, 622 flow [2024-06-27 18:38:01,873 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 18:38:01,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:01,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:01,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:38:01,874 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 18:38:01,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:01,874 INFO L85 PathProgramCache]: Analyzing trace with hash -475471032, now seen corresponding path program 2 times [2024-06-27 18:38:01,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:01,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924491377] [2024-06-27 18:38:01,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:01,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:02,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:02,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:02,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924491377] [2024-06-27 18:38:02,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924491377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:02,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:02,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:38:02,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951526407] [2024-06-27 18:38:02,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:02,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:38:02,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:02,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:38:02,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:38:02,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:38:02,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 93 transitions, 622 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 18:38:02,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:02,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:38:02,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:03,304 INFO L124 PetriNetUnfolderBase]: 4501/7168 cut-off events. [2024-06-27 18:38:03,305 INFO L125 PetriNetUnfolderBase]: For 31730/31744 co-relation queries the response was YES. [2024-06-27 18:38:03,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26923 conditions, 7168 events. 4501/7168 cut-off events. For 31730/31744 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 43791 event pairs, 1561 based on Foata normal form. 22/6970 useless extension candidates. Maximal degree in co-relation 26891. Up to 6156 conditions per place. [2024-06-27 18:38:03,348 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 100 selfloop transitions, 36 changer transitions 0/145 dead transitions. [2024-06-27 18:38:03,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 145 transitions, 1164 flow [2024-06-27 18:38:03,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:03,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:03,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 18:38:03,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5248447204968945 [2024-06-27 18:38:03,351 INFO L175 Difference]: Start difference. First operand has 81 places, 93 transitions, 622 flow. Second operand 7 states and 169 transitions. [2024-06-27 18:38:03,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 145 transitions, 1164 flow [2024-06-27 18:38:03,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 145 transitions, 1099 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-27 18:38:03,369 INFO L231 Difference]: Finished difference. Result has 86 places, 105 transitions, 779 flow [2024-06-27 18:38:03,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=779, PETRI_PLACES=86, PETRI_TRANSITIONS=105} [2024-06-27 18:38:03,370 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 34 predicate places. [2024-06-27 18:38:03,370 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 105 transitions, 779 flow [2024-06-27 18:38:03,371 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 18:38:03,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:03,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:03,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:38:03,371 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 18:38:03,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:03,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1022695294, now seen corresponding path program 3 times [2024-06-27 18:38:03,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:03,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462333219] [2024-06-27 18:38:03,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:03,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:03,970 INFO 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 18:38:03,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:03,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462333219] [2024-06-27 18:38:03,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462333219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:03,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:03,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:38:03,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645925702] [2024-06-27 18:38:03,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:03,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:38:03,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:03,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:38:03,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:38:04,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:38:04,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 105 transitions, 779 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 18:38:04,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:04,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:38:04,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:04,942 INFO L124 PetriNetUnfolderBase]: 4531/7209 cut-off events. [2024-06-27 18:38:04,943 INFO L125 PetriNetUnfolderBase]: For 41915/41952 co-relation queries the response was YES. [2024-06-27 18:38:04,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29341 conditions, 7209 events. 4531/7209 cut-off events. For 41915/41952 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 44316 event pairs, 1336 based on Foata normal form. 23/7008 useless extension candidates. Maximal degree in co-relation 29307. Up to 5964 conditions per place. [2024-06-27 18:38:04,983 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 108 selfloop transitions, 55 changer transitions 0/172 dead transitions. [2024-06-27 18:38:04,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 172 transitions, 1557 flow [2024-06-27 18:38:04,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:04,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:04,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 18:38:04,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372670807453416 [2024-06-27 18:38:04,985 INFO L175 Difference]: Start difference. First operand has 86 places, 105 transitions, 779 flow. Second operand 7 states and 173 transitions. [2024-06-27 18:38:04,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 172 transitions, 1557 flow [2024-06-27 18:38:05,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 172 transitions, 1465 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-27 18:38:05,012 INFO L231 Difference]: Finished difference. Result has 91 places, 128 transitions, 1096 flow [2024-06-27 18:38:05,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1096, PETRI_PLACES=91, PETRI_TRANSITIONS=128} [2024-06-27 18:38:05,012 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 39 predicate places. [2024-06-27 18:38:05,012 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 128 transitions, 1096 flow [2024-06-27 18:38:05,013 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 18:38:05,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:05,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:05,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:38:05,013 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 18:38:05,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:05,014 INFO L85 PathProgramCache]: Analyzing trace with hash 2114133069, now seen corresponding path program 1 times [2024-06-27 18:38:05,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:05,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949431743] [2024-06-27 18:38:05,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:05,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:05,785 INFO 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 18:38:05,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:05,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949431743] [2024-06-27 18:38:05,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949431743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:05,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:05,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:05,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655307771] [2024-06-27 18:38:05,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:05,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:05,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:05,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:05,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:05,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:38:05,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 128 transitions, 1096 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 18:38:05,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:05,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:38:05,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:06,746 INFO L124 PetriNetUnfolderBase]: 4061/6576 cut-off events. [2024-06-27 18:38:06,746 INFO L125 PetriNetUnfolderBase]: For 42696/42696 co-relation queries the response was YES. [2024-06-27 18:38:06,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28366 conditions, 6576 events. 4061/6576 cut-off events. For 42696/42696 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 40165 event pairs, 1386 based on Foata normal form. 4/6393 useless extension candidates. Maximal degree in co-relation 28329. Up to 5731 conditions per place. [2024-06-27 18:38:06,789 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 141 selfloop transitions, 26 changer transitions 0/175 dead transitions. [2024-06-27 18:38:06,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 175 transitions, 1622 flow [2024-06-27 18:38:06,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:06,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:06,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-27 18:38:06,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945652173913043 [2024-06-27 18:38:06,791 INFO L175 Difference]: Start difference. First operand has 91 places, 128 transitions, 1096 flow. Second operand 8 states and 182 transitions. [2024-06-27 18:38:06,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 175 transitions, 1622 flow [2024-06-27 18:38:06,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 175 transitions, 1532 flow, removed 35 selfloop flow, removed 2 redundant places. [2024-06-27 18:38:06,827 INFO L231 Difference]: Finished difference. Result has 97 places, 131 transitions, 1119 flow [2024-06-27 18:38:06,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1119, PETRI_PLACES=97, PETRI_TRANSITIONS=131} [2024-06-27 18:38:06,827 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 45 predicate places. [2024-06-27 18:38:06,828 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 131 transitions, 1119 flow [2024-06-27 18:38:06,828 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 18:38:06,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:06,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:06,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:38:06,828 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:06,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:06,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1782770739, now seen corresponding path program 1 times [2024-06-27 18:38:06,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:06,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840277512] [2024-06-27 18:38:06,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:06,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:07,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:07,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:07,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840277512] [2024-06-27 18:38:07,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840277512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:07,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:07,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:38:07,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638508344] [2024-06-27 18:38:07,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:07,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:38:07,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:07,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:38:07,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:38:07,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:38:07,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 131 transitions, 1119 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:07,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:07,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:38:07,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:08,087 INFO L124 PetriNetUnfolderBase]: 4055/6569 cut-off events. [2024-06-27 18:38:08,087 INFO L125 PetriNetUnfolderBase]: For 41946/41946 co-relation queries the response was YES. [2024-06-27 18:38:08,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27798 conditions, 6569 events. 4055/6569 cut-off events. For 41946/41946 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 39966 event pairs, 1437 based on Foata normal form. 2/6382 useless extension candidates. Maximal degree in co-relation 27759. Up to 5783 conditions per place. [2024-06-27 18:38:08,129 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 129 selfloop transitions, 14 changer transitions 0/151 dead transitions. [2024-06-27 18:38:08,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 151 transitions, 1483 flow [2024-06-27 18:38:08,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:38:08,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:38:08,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-06-27 18:38:08,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48695652173913045 [2024-06-27 18:38:08,131 INFO L175 Difference]: Start difference. First operand has 97 places, 131 transitions, 1119 flow. Second operand 5 states and 112 transitions. [2024-06-27 18:38:08,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 151 transitions, 1483 flow [2024-06-27 18:38:08,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 151 transitions, 1400 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 18:38:08,164 INFO L231 Difference]: Finished difference. Result has 96 places, 134 transitions, 1102 flow [2024-06-27 18:38:08,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1102, PETRI_PLACES=96, PETRI_TRANSITIONS=134} [2024-06-27 18:38:08,164 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 44 predicate places. [2024-06-27 18:38:08,164 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 134 transitions, 1102 flow [2024-06-27 18:38:08,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:08,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:08,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:08,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:38:08,165 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 18:38:08,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:08,166 INFO L85 PathProgramCache]: Analyzing trace with hash -119858925, now seen corresponding path program 1 times [2024-06-27 18:38:08,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:08,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146635965] [2024-06-27 18:38:08,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:08,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:08,974 INFO 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 18:38:08,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:08,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146635965] [2024-06-27 18:38:08,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146635965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:08,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:08,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:08,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405812398] [2024-06-27 18:38:08,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:08,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:08,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:08,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:08,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:09,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:38:09,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 134 transitions, 1102 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 18:38:09,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:09,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:38:09,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:09,925 INFO L124 PetriNetUnfolderBase]: 4520/7192 cut-off events. [2024-06-27 18:38:09,925 INFO L125 PetriNetUnfolderBase]: For 53080/53108 co-relation queries the response was YES. [2024-06-27 18:38:09,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31855 conditions, 7192 events. 4520/7192 cut-off events. For 53080/53108 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 44094 event pairs, 1488 based on Foata normal form. 9/6980 useless extension candidates. Maximal degree in co-relation 31815. Up to 6351 conditions per place. [2024-06-27 18:38:09,972 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 135 selfloop transitions, 31 changer transitions 0/175 dead transitions. [2024-06-27 18:38:09,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 175 transitions, 1604 flow [2024-06-27 18:38:09,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:09,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:09,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-27 18:38:09,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124223602484472 [2024-06-27 18:38:09,976 INFO L175 Difference]: Start difference. First operand has 96 places, 134 transitions, 1102 flow. Second operand 7 states and 165 transitions. [2024-06-27 18:38:09,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 175 transitions, 1604 flow [2024-06-27 18:38:10,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 175 transitions, 1570 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 18:38:10,015 INFO L231 Difference]: Finished difference. Result has 100 places, 138 transitions, 1218 flow [2024-06-27 18:38:10,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1218, PETRI_PLACES=100, PETRI_TRANSITIONS=138} [2024-06-27 18:38:10,016 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 48 predicate places. [2024-06-27 18:38:10,016 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 138 transitions, 1218 flow [2024-06-27 18:38:10,016 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 18:38:10,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:10,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:10,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:38:10,017 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 18:38:10,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:10,017 INFO L85 PathProgramCache]: Analyzing trace with hash -119674351, now seen corresponding path program 1 times [2024-06-27 18:38:10,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:10,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469680165] [2024-06-27 18:38:10,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:10,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:10,771 INFO 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 18:38:10,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:10,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469680165] [2024-06-27 18:38:10,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469680165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:10,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:10,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:10,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574270170] [2024-06-27 18:38:10,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:10,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:10,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:10,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:10,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:10,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:38:10,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 138 transitions, 1218 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 18:38:10,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:10,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:38:10,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:11,748 INFO L124 PetriNetUnfolderBase]: 4771/7459 cut-off events. [2024-06-27 18:38:11,749 INFO L125 PetriNetUnfolderBase]: For 55796/55796 co-relation queries the response was YES. [2024-06-27 18:38:11,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32864 conditions, 7459 events. 4771/7459 cut-off events. For 55796/55796 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 44024 event pairs, 1642 based on Foata normal form. 2/7247 useless extension candidates. Maximal degree in co-relation 32823. Up to 6736 conditions per place. [2024-06-27 18:38:11,795 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 160 selfloop transitions, 27 changer transitions 0/194 dead transitions. [2024-06-27 18:38:11,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 194 transitions, 1886 flow [2024-06-27 18:38:11,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:11,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:11,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-27 18:38:11,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-27 18:38:11,798 INFO L175 Difference]: Start difference. First operand has 100 places, 138 transitions, 1218 flow. Second operand 8 states and 176 transitions. [2024-06-27 18:38:11,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 194 transitions, 1886 flow [2024-06-27 18:38:11,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 194 transitions, 1802 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 18:38:11,839 INFO L231 Difference]: Finished difference. Result has 104 places, 150 transitions, 1368 flow [2024-06-27 18:38:11,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1368, PETRI_PLACES=104, PETRI_TRANSITIONS=150} [2024-06-27 18:38:11,840 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 52 predicate places. [2024-06-27 18:38:11,840 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 150 transitions, 1368 flow [2024-06-27 18:38:11,840 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 18:38:11,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:11,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:11,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:38:11,840 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 18:38:11,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:11,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1113309043, now seen corresponding path program 2 times [2024-06-27 18:38:11,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:11,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359888237] [2024-06-27 18:38:11,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:11,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:12,556 INFO 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 18:38:12,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:12,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359888237] [2024-06-27 18:38:12,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359888237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:12,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:12,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:12,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879384068] [2024-06-27 18:38:12,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:12,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:12,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:12,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:12,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:12,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:38:12,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 150 transitions, 1368 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 18:38:12,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:12,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:38:12,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:13,557 INFO L124 PetriNetUnfolderBase]: 4900/7630 cut-off events. [2024-06-27 18:38:13,558 INFO L125 PetriNetUnfolderBase]: For 64095/64104 co-relation queries the response was YES. [2024-06-27 18:38:13,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34901 conditions, 7630 events. 4900/7630 cut-off events. For 64095/64104 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 44946 event pairs, 1426 based on Foata normal form. 10/7426 useless extension candidates. Maximal degree in co-relation 34858. Up to 6468 conditions per place. [2024-06-27 18:38:13,608 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 159 selfloop transitions, 88 changer transitions 0/254 dead transitions. [2024-06-27 18:38:13,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 254 transitions, 2700 flow [2024-06-27 18:38:13,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:13,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:13,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 18:38:13,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027173913043478 [2024-06-27 18:38:13,610 INFO L175 Difference]: Start difference. First operand has 104 places, 150 transitions, 1368 flow. Second operand 8 states and 185 transitions. [2024-06-27 18:38:13,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 254 transitions, 2700 flow [2024-06-27 18:38:13,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 254 transitions, 2585 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-27 18:38:13,664 INFO L231 Difference]: Finished difference. Result has 109 places, 203 transitions, 2159 flow [2024-06-27 18:38:13,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1256, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2159, PETRI_PLACES=109, PETRI_TRANSITIONS=203} [2024-06-27 18:38:13,664 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 57 predicate places. [2024-06-27 18:38:13,665 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 203 transitions, 2159 flow [2024-06-27 18:38:13,665 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 18:38:13,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:13,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:13,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:38:13,665 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 18:38:13,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:13,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1113605713, now seen corresponding path program 3 times [2024-06-27 18:38:13,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:13,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400326242] [2024-06-27 18:38:13,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:13,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:14,396 INFO 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 18:38:14,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:14,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400326242] [2024-06-27 18:38:14,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400326242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:14,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:14,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:14,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663319143] [2024-06-27 18:38:14,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:14,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:14,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:14,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:14,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:14,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:38:14,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 203 transitions, 2159 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 18:38:14,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:14,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:38:14,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:15,466 INFO L124 PetriNetUnfolderBase]: 4942/7689 cut-off events. [2024-06-27 18:38:15,466 INFO L125 PetriNetUnfolderBase]: For 71272/71299 co-relation queries the response was YES. [2024-06-27 18:38:15,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37004 conditions, 7689 events. 4942/7689 cut-off events. For 71272/71299 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 45259 event pairs, 1500 based on Foata normal form. 20/7496 useless extension candidates. Maximal degree in co-relation 36958. Up to 6807 conditions per place. [2024-06-27 18:38:15,523 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 200 selfloop transitions, 81 changer transitions 0/288 dead transitions. [2024-06-27 18:38:15,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 288 transitions, 3395 flow [2024-06-27 18:38:15,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:38:15,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:38:15,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 203 transitions. [2024-06-27 18:38:15,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49033816425120774 [2024-06-27 18:38:15,525 INFO L175 Difference]: Start difference. First operand has 109 places, 203 transitions, 2159 flow. Second operand 9 states and 203 transitions. [2024-06-27 18:38:15,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 288 transitions, 3395 flow [2024-06-27 18:38:15,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 288 transitions, 3185 flow, removed 95 selfloop flow, removed 2 redundant places. [2024-06-27 18:38:15,619 INFO L231 Difference]: Finished difference. Result has 117 places, 230 transitions, 2549 flow [2024-06-27 18:38:15,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2005, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2549, PETRI_PLACES=117, PETRI_TRANSITIONS=230} [2024-06-27 18:38:15,620 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 65 predicate places. [2024-06-27 18:38:15,620 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 230 transitions, 2549 flow [2024-06-27 18:38:15,620 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 18:38:15,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:15,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:15,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:38:15,621 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 18:38:15,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:15,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1105034833, now seen corresponding path program 4 times [2024-06-27 18:38:15,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:15,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74202465] [2024-06-27 18:38:15,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:15,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:16,354 INFO 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 18:38:16,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:16,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74202465] [2024-06-27 18:38:16,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74202465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:16,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:16,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:16,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943875471] [2024-06-27 18:38:16,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:16,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:16,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:16,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:16,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:16,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:38:16,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 230 transitions, 2549 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 18:38:16,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:16,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:38:16,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:17,373 INFO L124 PetriNetUnfolderBase]: 4931/7678 cut-off events. [2024-06-27 18:38:17,373 INFO L125 PetriNetUnfolderBase]: For 79166/79193 co-relation queries the response was YES. [2024-06-27 18:38:17,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38379 conditions, 7678 events. 4931/7678 cut-off events. For 79166/79193 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 45279 event pairs, 1500 based on Foata normal form. 20/7483 useless extension candidates. Maximal degree in co-relation 38330. Up to 6863 conditions per place. [2024-06-27 18:38:17,444 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 217 selfloop transitions, 54 changer transitions 0/278 dead transitions. [2024-06-27 18:38:17,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 278 transitions, 3300 flow [2024-06-27 18:38:17,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:17,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:17,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-06-27 18:38:17,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48641304347826086 [2024-06-27 18:38:17,456 INFO L175 Difference]: Start difference. First operand has 117 places, 230 transitions, 2549 flow. Second operand 8 states and 179 transitions. [2024-06-27 18:38:17,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 278 transitions, 3300 flow [2024-06-27 18:38:17,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 278 transitions, 3142 flow, removed 74 selfloop flow, removed 2 redundant places. [2024-06-27 18:38:17,569 INFO L231 Difference]: Finished difference. Result has 123 places, 230 transitions, 2512 flow [2024-06-27 18:38:17,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2391, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2512, PETRI_PLACES=123, PETRI_TRANSITIONS=230} [2024-06-27 18:38:17,570 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 71 predicate places. [2024-06-27 18:38:17,570 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 230 transitions, 2512 flow [2024-06-27 18:38:17,570 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 18:38:17,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:17,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:17,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:38:17,570 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 18:38:17,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:17,571 INFO L85 PathProgramCache]: Analyzing trace with hash 371564497, now seen corresponding path program 1 times [2024-06-27 18:38:17,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:17,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878625361] [2024-06-27 18:38:17,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:17,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:18,303 INFO 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 18:38:18,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:18,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878625361] [2024-06-27 18:38:18,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878625361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:18,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:18,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:38:18,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846061626] [2024-06-27 18:38:18,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:18,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:38:18,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:18,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:38:18,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:38:18,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:38:18,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 230 transitions, 2512 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 18:38:18,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:18,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:38:18,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:19,434 INFO L124 PetriNetUnfolderBase]: 4840/7649 cut-off events. [2024-06-27 18:38:19,435 INFO L125 PetriNetUnfolderBase]: For 84347/84378 co-relation queries the response was YES. [2024-06-27 18:38:19,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38645 conditions, 7649 events. 4840/7649 cut-off events. For 84347/84378 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 46258 event pairs, 1454 based on Foata normal form. 14/7420 useless extension candidates. Maximal degree in co-relation 38594. Up to 6692 conditions per place. [2024-06-27 18:38:19,496 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 250 selfloop transitions, 51 changer transitions 0/316 dead transitions. [2024-06-27 18:38:19,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 316 transitions, 3617 flow [2024-06-27 18:38:19,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:38:19,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:38:19,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-27 18:38:19,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120772946859904 [2024-06-27 18:38:19,500 INFO L175 Difference]: Start difference. First operand has 123 places, 230 transitions, 2512 flow. Second operand 9 states and 212 transitions. [2024-06-27 18:38:19,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 316 transitions, 3617 flow [2024-06-27 18:38:19,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 316 transitions, 3422 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 18:38:19,589 INFO L231 Difference]: Finished difference. Result has 126 places, 260 transitions, 2813 flow [2024-06-27 18:38:19,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2326, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2813, PETRI_PLACES=126, PETRI_TRANSITIONS=260} [2024-06-27 18:38:19,590 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 74 predicate places. [2024-06-27 18:38:19,590 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 260 transitions, 2813 flow [2024-06-27 18:38:19,591 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 18:38:19,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:19,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:19,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:38:19,592 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 18:38:19,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:19,592 INFO L85 PathProgramCache]: Analyzing trace with hash 424937601, now seen corresponding path program 2 times [2024-06-27 18:38:19,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:19,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908456995] [2024-06-27 18:38:19,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:19,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:20,384 INFO 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 18:38:20,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:20,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908456995] [2024-06-27 18:38:20,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908456995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:20,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:20,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:38:20,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766288576] [2024-06-27 18:38:20,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:20,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:38:20,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:20,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:38:20,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:38:20,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:38:20,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 260 transitions, 2813 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 18:38:20,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:20,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:38:20,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:21,651 INFO L124 PetriNetUnfolderBase]: 4908/7774 cut-off events. [2024-06-27 18:38:21,652 INFO L125 PetriNetUnfolderBase]: For 96200/96228 co-relation queries the response was YES. [2024-06-27 18:38:21,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40932 conditions, 7774 events. 4908/7774 cut-off events. For 96200/96228 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 47199 event pairs, 1106 based on Foata normal form. 18/7556 useless extension candidates. Maximal degree in co-relation 40879. Up to 6706 conditions per place. [2024-06-27 18:38:21,708 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 240 selfloop transitions, 57 changer transitions 0/312 dead transitions. [2024-06-27 18:38:21,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 312 transitions, 3657 flow [2024-06-27 18:38:21,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:21,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:21,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 18:38:21,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054347826086957 [2024-06-27 18:38:21,710 INFO L175 Difference]: Start difference. First operand has 126 places, 260 transitions, 2813 flow. Second operand 8 states and 186 transitions. [2024-06-27 18:38:21,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 312 transitions, 3657 flow [2024-06-27 18:38:21,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 312 transitions, 3548 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-27 18:38:21,827 INFO L231 Difference]: Finished difference. Result has 132 places, 267 transitions, 2947 flow [2024-06-27 18:38:21,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2704, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2947, PETRI_PLACES=132, PETRI_TRANSITIONS=267} [2024-06-27 18:38:21,828 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 80 predicate places. [2024-06-27 18:38:21,828 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 267 transitions, 2947 flow [2024-06-27 18:38:21,828 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 18:38:21,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:21,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:21,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:38:21,829 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 18:38:21,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:21,829 INFO L85 PathProgramCache]: Analyzing trace with hash 465837589, now seen corresponding path program 3 times [2024-06-27 18:38:21,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:21,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350753575] [2024-06-27 18:38:21,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:21,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:21,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:22,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:22,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:22,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350753575] [2024-06-27 18:38:22,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350753575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:22,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:22,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:38:22,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248542064] [2024-06-27 18:38:22,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:22,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:38:22,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:22,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:38:22,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:38:22,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:38:22,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 267 transitions, 2947 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 18:38:22,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:22,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:38:22,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:24,030 INFO L124 PetriNetUnfolderBase]: 4968/7893 cut-off events. [2024-06-27 18:38:24,031 INFO L125 PetriNetUnfolderBase]: For 110355/110376 co-relation queries the response was YES. [2024-06-27 18:38:24,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42802 conditions, 7893 events. 4968/7893 cut-off events. For 110355/110376 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 48231 event pairs, 1360 based on Foata normal form. 22/7680 useless extension candidates. Maximal degree in co-relation 42747. Up to 6791 conditions per place. [2024-06-27 18:38:24,101 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 241 selfloop transitions, 60 changer transitions 0/316 dead transitions. [2024-06-27 18:38:24,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 316 transitions, 3795 flow [2024-06-27 18:38:24,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:24,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:24,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-27 18:38:24,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081521739130435 [2024-06-27 18:38:24,103 INFO L175 Difference]: Start difference. First operand has 132 places, 267 transitions, 2947 flow. Second operand 8 states and 187 transitions. [2024-06-27 18:38:24,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 316 transitions, 3795 flow [2024-06-27 18:38:24,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 316 transitions, 3612 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-27 18:38:24,244 INFO L231 Difference]: Finished difference. Result has 135 places, 270 transitions, 2977 flow [2024-06-27 18:38:24,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2776, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2977, PETRI_PLACES=135, PETRI_TRANSITIONS=270} [2024-06-27 18:38:24,245 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 83 predicate places. [2024-06-27 18:38:24,245 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 270 transitions, 2977 flow [2024-06-27 18:38:24,245 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 18:38:24,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:24,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:24,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:38:24,246 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 18:38:24,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:24,246 INFO L85 PathProgramCache]: Analyzing trace with hash 468668881, now seen corresponding path program 1 times [2024-06-27 18:38:24,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:24,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841234037] [2024-06-27 18:38:24,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:24,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:24,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:25,015 INFO 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 18:38:25,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:25,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841234037] [2024-06-27 18:38:25,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841234037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:25,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:25,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:38:25,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069281944] [2024-06-27 18:38:25,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:25,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:38:25,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:25,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:38:25,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:38:25,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:38:25,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 270 transitions, 2977 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 18:38:25,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:25,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:38:25,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:26,319 INFO L124 PetriNetUnfolderBase]: 5330/8280 cut-off events. [2024-06-27 18:38:26,320 INFO L125 PetriNetUnfolderBase]: For 107225/107245 co-relation queries the response was YES. [2024-06-27 18:38:26,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43582 conditions, 8280 events. 5330/8280 cut-off events. For 107225/107245 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 48737 event pairs, 1482 based on Foata normal form. 24/8085 useless extension candidates. Maximal degree in co-relation 43526. Up to 7350 conditions per place. [2024-06-27 18:38:26,394 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 265 selfloop transitions, 57 changer transitions 0/329 dead transitions. [2024-06-27 18:38:26,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 329 transitions, 3911 flow [2024-06-27 18:38:26,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:38:26,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:38:26,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 204 transitions. [2024-06-27 18:38:26,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2024-06-27 18:38:26,396 INFO L175 Difference]: Start difference. First operand has 135 places, 270 transitions, 2977 flow. Second operand 9 states and 204 transitions. [2024-06-27 18:38:26,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 329 transitions, 3911 flow [2024-06-27 18:38:26,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 329 transitions, 3740 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-27 18:38:26,570 INFO L231 Difference]: Finished difference. Result has 139 places, 275 transitions, 3032 flow [2024-06-27 18:38:26,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2806, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3032, PETRI_PLACES=139, PETRI_TRANSITIONS=275} [2024-06-27 18:38:26,570 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 87 predicate places. [2024-06-27 18:38:26,571 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 275 transitions, 3032 flow [2024-06-27 18:38:26,571 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 18:38:26,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:26,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:26,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:38:26,571 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 18:38:26,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:26,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1616456653, now seen corresponding path program 4 times [2024-06-27 18:38:26,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:26,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377870619] [2024-06-27 18:38:26,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:26,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:27,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:27,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:27,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377870619] [2024-06-27 18:38:27,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377870619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:27,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:27,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:38:27,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25652430] [2024-06-27 18:38:27,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:27,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:38:27,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:27,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:38:27,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:38:27,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:38:27,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 275 transitions, 3032 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 18:38:27,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:27,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:38:27,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:28,559 INFO L124 PetriNetUnfolderBase]: 5217/8271 cut-off events. [2024-06-27 18:38:28,559 INFO L125 PetriNetUnfolderBase]: For 126499/126524 co-relation queries the response was YES. [2024-06-27 18:38:28,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44927 conditions, 8271 events. 5217/8271 cut-off events. For 126499/126524 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 50772 event pairs, 1387 based on Foata normal form. 38/8059 useless extension candidates. Maximal degree in co-relation 44869. Up to 6777 conditions per place. [2024-06-27 18:38:28,629 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 226 selfloop transitions, 86 changer transitions 0/328 dead transitions. [2024-06-27 18:38:28,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 328 transitions, 4015 flow [2024-06-27 18:38:28,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:28,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:28,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 18:38:28,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.529891304347826 [2024-06-27 18:38:28,630 INFO L175 Difference]: Start difference. First operand has 139 places, 275 transitions, 3032 flow. Second operand 8 states and 195 transitions. [2024-06-27 18:38:28,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 328 transitions, 4015 flow [2024-06-27 18:38:28,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 328 transitions, 3860 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 18:38:28,820 INFO L231 Difference]: Finished difference. Result has 141 places, 278 transitions, 3136 flow [2024-06-27 18:38:28,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2877, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3136, PETRI_PLACES=141, PETRI_TRANSITIONS=278} [2024-06-27 18:38:28,820 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 89 predicate places. [2024-06-27 18:38:28,820 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 278 transitions, 3136 flow [2024-06-27 18:38:28,821 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 18:38:28,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:28,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:28,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:38:28,821 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 18:38:28,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:28,822 INFO L85 PathProgramCache]: Analyzing trace with hash 584853781, now seen corresponding path program 2 times [2024-06-27 18:38:28,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:28,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378336383] [2024-06-27 18:38:28,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:28,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:29,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:29,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:29,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378336383] [2024-06-27 18:38:29,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378336383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:29,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:29,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:29,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110738862] [2024-06-27 18:38:29,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:29,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:29,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:29,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:29,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:29,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:38:29,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 278 transitions, 3136 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:29,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:29,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:38:29,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:30,771 INFO L124 PetriNetUnfolderBase]: 5542/8616 cut-off events. [2024-06-27 18:38:30,771 INFO L125 PetriNetUnfolderBase]: For 129160/129168 co-relation queries the response was YES. [2024-06-27 18:38:30,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46639 conditions, 8616 events. 5542/8616 cut-off events. For 129160/129168 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 51122 event pairs, 1514 based on Foata normal form. 12/8403 useless extension candidates. Maximal degree in co-relation 46580. Up to 7438 conditions per place. [2024-06-27 18:38:30,843 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 234 selfloop transitions, 84 changer transitions 0/325 dead transitions. [2024-06-27 18:38:30,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 325 transitions, 3995 flow [2024-06-27 18:38:30,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:30,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:30,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-27 18:38:30,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49728260869565216 [2024-06-27 18:38:30,845 INFO L175 Difference]: Start difference. First operand has 141 places, 278 transitions, 3136 flow. Second operand 8 states and 183 transitions. [2024-06-27 18:38:30,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 325 transitions, 3995 flow [2024-06-27 18:38:31,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 325 transitions, 3782 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-27 18:38:31,061 INFO L231 Difference]: Finished difference. Result has 146 places, 281 transitions, 3212 flow [2024-06-27 18:38:31,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2929, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3212, PETRI_PLACES=146, PETRI_TRANSITIONS=281} [2024-06-27 18:38:31,061 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 94 predicate places. [2024-06-27 18:38:31,061 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 281 transitions, 3212 flow [2024-06-27 18:38:31,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:31,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:31,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:31,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:38:31,062 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 18:38:31,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:31,063 INFO L85 PathProgramCache]: Analyzing trace with hash 585063310, now seen corresponding path program 1 times [2024-06-27 18:38:31,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:31,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691415987] [2024-06-27 18:38:31,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:31,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:31,852 INFO 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 18:38:31,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:31,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691415987] [2024-06-27 18:38:31,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691415987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:31,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:31,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:38:31,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604172084] [2024-06-27 18:38:31,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:31,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:38:31,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:31,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:38:31,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:38:31,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:38:31,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 281 transitions, 3212 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 18:38:31,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:31,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:38:31,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:33,332 INFO L124 PetriNetUnfolderBase]: 5584/8676 cut-off events. [2024-06-27 18:38:33,333 INFO L125 PetriNetUnfolderBase]: For 129252/129264 co-relation queries the response was YES. [2024-06-27 18:38:33,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46841 conditions, 8676 events. 5584/8676 cut-off events. For 129252/129264 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 51432 event pairs, 1547 based on Foata normal form. 16/8468 useless extension candidates. Maximal degree in co-relation 46779. Up to 7864 conditions per place. [2024-06-27 18:38:33,397 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 297 selfloop transitions, 35 changer transitions 0/339 dead transitions. [2024-06-27 18:38:33,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 339 transitions, 4178 flow [2024-06-27 18:38:33,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:38:33,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:38:33,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 198 transitions. [2024-06-27 18:38:33,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-27 18:38:33,399 INFO L175 Difference]: Start difference. First operand has 146 places, 281 transitions, 3212 flow. Second operand 9 states and 198 transitions. [2024-06-27 18:38:33,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 339 transitions, 4178 flow [2024-06-27 18:38:33,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 339 transitions, 3976 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 18:38:33,614 INFO L231 Difference]: Finished difference. Result has 150 places, 284 transitions, 3167 flow [2024-06-27 18:38:33,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3014, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3167, PETRI_PLACES=150, PETRI_TRANSITIONS=284} [2024-06-27 18:38:33,615 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 98 predicate places. [2024-06-27 18:38:33,615 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 284 transitions, 3167 flow [2024-06-27 18:38:33,615 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 18:38:33,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:33,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:33,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:38:33,615 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:33,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:33,632 INFO L85 PathProgramCache]: Analyzing trace with hash -461620846, now seen corresponding path program 1 times [2024-06-27 18:38:33,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:33,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945120396] [2024-06-27 18:38:33,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:33,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:34,312 INFO 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 18:38:34,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:34,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945120396] [2024-06-27 18:38:34,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945120396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:34,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:34,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:38:34,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682003703] [2024-06-27 18:38:34,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:34,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:38:34,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:34,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:38:34,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:38:34,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:38:34,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 284 transitions, 3167 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 18:38:34,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:34,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:38:34,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:35,554 INFO L124 PetriNetUnfolderBase]: 5604/8704 cut-off events. [2024-06-27 18:38:35,554 INFO L125 PetriNetUnfolderBase]: For 132709/132721 co-relation queries the response was YES. [2024-06-27 18:38:35,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47321 conditions, 8704 events. 5604/8704 cut-off events. For 132709/132721 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 51535 event pairs, 1553 based on Foata normal form. 13/8493 useless extension candidates. Maximal degree in co-relation 47258. Up to 7931 conditions per place. [2024-06-27 18:38:35,622 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 287 selfloop transitions, 32 changer transitions 0/326 dead transitions. [2024-06-27 18:38:35,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 326 transitions, 4107 flow [2024-06-27 18:38:35,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:38:35,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:38:35,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-27 18:38:35,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-06-27 18:38:35,623 INFO L175 Difference]: Start difference. First operand has 150 places, 284 transitions, 3167 flow. Second operand 6 states and 135 transitions. [2024-06-27 18:38:35,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 326 transitions, 4107 flow [2024-06-27 18:38:35,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 326 transitions, 3980 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-27 18:38:35,832 INFO L231 Difference]: Finished difference. Result has 150 places, 293 transitions, 3214 flow [2024-06-27 18:38:35,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3040, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3214, PETRI_PLACES=150, PETRI_TRANSITIONS=293} [2024-06-27 18:38:35,833 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 98 predicate places. [2024-06-27 18:38:35,833 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 293 transitions, 3214 flow [2024-06-27 18:38:35,833 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 18:38:35,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:35,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:35,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:38:35,834 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:35,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:35,834 INFO L85 PathProgramCache]: Analyzing trace with hash 162366060, now seen corresponding path program 2 times [2024-06-27 18:38:35,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:35,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694996364] [2024-06-27 18:38:35,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:35,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:36,620 INFO 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 18:38:36,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:36,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694996364] [2024-06-27 18:38:36,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694996364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:36,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:36,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:38:36,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858696941] [2024-06-27 18:38:36,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:36,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:38:36,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:36,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:38:36,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:38:36,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:38:36,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 293 transitions, 3214 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 18:38:36,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:36,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:38:36,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:37,897 INFO L124 PetriNetUnfolderBase]: 5659/8792 cut-off events. [2024-06-27 18:38:37,897 INFO L125 PetriNetUnfolderBase]: For 143492/143540 co-relation queries the response was YES. [2024-06-27 18:38:37,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48745 conditions, 8792 events. 5659/8792 cut-off events. For 143492/143540 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 52414 event pairs, 1380 based on Foata normal form. 36/8598 useless extension candidates. Maximal degree in co-relation 48680. Up to 7667 conditions per place. [2024-06-27 18:38:37,975 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 263 selfloop transitions, 92 changer transitions 0/362 dead transitions. [2024-06-27 18:38:37,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 362 transitions, 4465 flow [2024-06-27 18:38:37,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:38:37,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:38:37,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 204 transitions. [2024-06-27 18:38:37,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2024-06-27 18:38:37,977 INFO L175 Difference]: Start difference. First operand has 150 places, 293 transitions, 3214 flow. Second operand 9 states and 204 transitions. [2024-06-27 18:38:37,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 362 transitions, 4465 flow [2024-06-27 18:38:38,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 362 transitions, 4437 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-27 18:38:38,211 INFO L231 Difference]: Finished difference. Result has 158 places, 299 transitions, 3536 flow [2024-06-27 18:38:38,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3186, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3536, PETRI_PLACES=158, PETRI_TRANSITIONS=299} [2024-06-27 18:38:38,212 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 106 predicate places. [2024-06-27 18:38:38,212 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 299 transitions, 3536 flow [2024-06-27 18:38:38,212 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 18:38:38,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:38,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:38,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:38:38,213 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 18:38:38,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:38,213 INFO L85 PathProgramCache]: Analyzing trace with hash 162039630, now seen corresponding path program 3 times [2024-06-27 18:38:38,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:38,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110987241] [2024-06-27 18:38:38,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:38,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:39,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:39,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:39,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110987241] [2024-06-27 18:38:39,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110987241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:39,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:39,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:38:39,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570905351] [2024-06-27 18:38:39,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:39,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:38:39,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:39,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:38:39,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:38:39,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:38:39,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 299 transitions, 3536 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 18:38:39,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:39,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:38:39,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:40,545 INFO L124 PetriNetUnfolderBase]: 5701/8878 cut-off events. [2024-06-27 18:38:40,546 INFO L125 PetriNetUnfolderBase]: For 158910/158958 co-relation queries the response was YES. [2024-06-27 18:38:40,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50636 conditions, 8878 events. 5701/8878 cut-off events. For 158910/158958 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 53146 event pairs, 1471 based on Foata normal form. 36/8676 useless extension candidates. Maximal degree in co-relation 50568. Up to 7863 conditions per place. [2024-06-27 18:38:40,624 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 276 selfloop transitions, 87 changer transitions 0/370 dead transitions. [2024-06-27 18:38:40,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 370 transitions, 4665 flow [2024-06-27 18:38:40,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:38:40,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:38:40,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 223 transitions. [2024-06-27 18:38:40,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48478260869565215 [2024-06-27 18:38:40,626 INFO L175 Difference]: Start difference. First operand has 158 places, 299 transitions, 3536 flow. Second operand 10 states and 223 transitions. [2024-06-27 18:38:40,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 370 transitions, 4665 flow [2024-06-27 18:38:40,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 370 transitions, 4469 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-27 18:38:40,948 INFO L231 Difference]: Finished difference. Result has 163 places, 302 transitions, 3612 flow [2024-06-27 18:38:40,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3354, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3612, PETRI_PLACES=163, PETRI_TRANSITIONS=302} [2024-06-27 18:38:40,949 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 111 predicate places. [2024-06-27 18:38:40,949 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 302 transitions, 3612 flow [2024-06-27 18:38:40,949 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 18:38:40,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:40,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:40,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:38:40,950 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 18:38:40,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:40,950 INFO L85 PathProgramCache]: Analyzing trace with hash -103657650, now seen corresponding path program 4 times [2024-06-27 18:38:40,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:40,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572015389] [2024-06-27 18:38:40,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:40,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:41,775 INFO 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 18:38:41,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:41,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572015389] [2024-06-27 18:38:41,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572015389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:41,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:41,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:38:41,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187182566] [2024-06-27 18:38:41,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:41,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:38:41,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:41,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:38:41,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:38:41,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:38:41,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 302 transitions, 3612 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 18:38:41,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:41,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:38:41,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:43,292 INFO L124 PetriNetUnfolderBase]: 5693/8851 cut-off events. [2024-06-27 18:38:43,292 INFO L125 PetriNetUnfolderBase]: For 158635/158683 co-relation queries the response was YES. [2024-06-27 18:38:43,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50364 conditions, 8851 events. 5693/8851 cut-off events. For 158635/158683 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 52797 event pairs, 1489 based on Foata normal form. 36/8654 useless extension candidates. Maximal degree in co-relation 50294. Up to 7930 conditions per place. [2024-06-27 18:38:43,365 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 295 selfloop transitions, 60 changer transitions 0/362 dead transitions. [2024-06-27 18:38:43,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 362 transitions, 4613 flow [2024-06-27 18:38:43,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:38:43,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:38:43,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 201 transitions. [2024-06-27 18:38:43,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855072463768116 [2024-06-27 18:38:43,367 INFO L175 Difference]: Start difference. First operand has 163 places, 302 transitions, 3612 flow. Second operand 9 states and 201 transitions. [2024-06-27 18:38:43,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 362 transitions, 4613 flow [2024-06-27 18:38:43,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 362 transitions, 4343 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-27 18:38:43,680 INFO L231 Difference]: Finished difference. Result has 164 places, 302 transitions, 3471 flow [2024-06-27 18:38:43,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3342, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3471, PETRI_PLACES=164, PETRI_TRANSITIONS=302} [2024-06-27 18:38:43,681 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 112 predicate places. [2024-06-27 18:38:43,681 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 302 transitions, 3471 flow [2024-06-27 18:38:43,681 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 18:38:43,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:43,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:43,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:38:43,681 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 18:38:43,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:43,682 INFO L85 PathProgramCache]: Analyzing trace with hash -103873131, now seen corresponding path program 5 times [2024-06-27 18:38:43,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:43,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099307599] [2024-06-27 18:38:43,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:43,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:43,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:44,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:44,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:44,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099307599] [2024-06-27 18:38:44,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099307599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:44,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:44,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:38:44,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17839508] [2024-06-27 18:38:44,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:44,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:38:44,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:44,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:38:44,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:38:44,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:38:44,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 302 transitions, 3471 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 18:38:44,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:44,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:38:44,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:46,018 INFO L124 PetriNetUnfolderBase]: 5527/8590 cut-off events. [2024-06-27 18:38:46,019 INFO L125 PetriNetUnfolderBase]: For 178205/178234 co-relation queries the response was YES. [2024-06-27 18:38:46,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50463 conditions, 8590 events. 5527/8590 cut-off events. For 178205/178234 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 52158 event pairs, 1292 based on Foata normal form. 44/8445 useless extension candidates. Maximal degree in co-relation 50392. Up to 6874 conditions per place. [2024-06-27 18:38:46,092 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 193 selfloop transitions, 145 changer transitions 0/355 dead transitions. [2024-06-27 18:38:46,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 355 transitions, 4552 flow [2024-06-27 18:38:46,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:46,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:46,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 18:38:46,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5353260869565217 [2024-06-27 18:38:46,094 INFO L175 Difference]: Start difference. First operand has 164 places, 302 transitions, 3471 flow. Second operand 8 states and 197 transitions. [2024-06-27 18:38:46,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 355 transitions, 4552 flow [2024-06-27 18:38:46,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 355 transitions, 4400 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 18:38:46,341 INFO L231 Difference]: Finished difference. Result has 164 places, 305 transitions, 3711 flow [2024-06-27 18:38:46,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3319, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3711, PETRI_PLACES=164, PETRI_TRANSITIONS=305} [2024-06-27 18:38:46,341 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 112 predicate places. [2024-06-27 18:38:46,342 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 305 transitions, 3711 flow [2024-06-27 18:38:46,342 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 18:38:46,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:46,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:46,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:38:46,342 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 18:38:46,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:46,343 INFO L85 PathProgramCache]: Analyzing trace with hash -103665369, now seen corresponding path program 3 times [2024-06-27 18:38:46,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:46,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978729326] [2024-06-27 18:38:46,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:46,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:47,077 INFO 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 18:38:47,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:47,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978729326] [2024-06-27 18:38:47,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978729326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:47,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:47,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:47,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68715334] [2024-06-27 18:38:47,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:47,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:47,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:47,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:47,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:47,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:38:47,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 305 transitions, 3711 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:47,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:47,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:38:47,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:48,672 INFO L124 PetriNetUnfolderBase]: 5834/8907 cut-off events. [2024-06-27 18:38:48,672 INFO L125 PetriNetUnfolderBase]: For 179953/179980 co-relation queries the response was YES. [2024-06-27 18:38:48,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52443 conditions, 8907 events. 5834/8907 cut-off events. For 179953/179980 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 52339 event pairs, 1438 based on Foata normal form. 18/8737 useless extension candidates. Maximal degree in co-relation 52371. Up to 7731 conditions per place. [2024-06-27 18:38:48,746 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 237 selfloop transitions, 113 changer transitions 0/357 dead transitions. [2024-06-27 18:38:48,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 357 transitions, 4739 flow [2024-06-27 18:38:48,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:48,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:48,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 18:38:48,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054347826086957 [2024-06-27 18:38:48,748 INFO L175 Difference]: Start difference. First operand has 164 places, 305 transitions, 3711 flow. Second operand 8 states and 186 transitions. [2024-06-27 18:38:48,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 357 transitions, 4739 flow [2024-06-27 18:38:49,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 357 transitions, 4381 flow, removed 55 selfloop flow, removed 5 redundant places. [2024-06-27 18:38:49,103 INFO L231 Difference]: Finished difference. Result has 169 places, 312 transitions, 3809 flow [2024-06-27 18:38:49,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3382, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3809, PETRI_PLACES=169, PETRI_TRANSITIONS=312} [2024-06-27 18:38:49,104 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 117 predicate places. [2024-06-27 18:38:49,104 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 312 transitions, 3809 flow [2024-06-27 18:38:49,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:49,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:49,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:49,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:38:49,105 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:49,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:49,105 INFO L85 PathProgramCache]: Analyzing trace with hash 354222584, now seen corresponding path program 2 times [2024-06-27 18:38:49,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:49,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688560124] [2024-06-27 18:38:49,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:49,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:49,608 INFO 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 18:38:49,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:49,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688560124] [2024-06-27 18:38:49,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688560124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:49,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:49,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:38:49,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268225661] [2024-06-27 18:38:49,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:49,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:38:49,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:49,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:38:49,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:38:49,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:38:49,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 312 transitions, 3809 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 18:38:49,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:49,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:38:49,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:50,962 INFO L124 PetriNetUnfolderBase]: 5831/9046 cut-off events. [2024-06-27 18:38:50,962 INFO L125 PetriNetUnfolderBase]: For 172536/172584 co-relation queries the response was YES. [2024-06-27 18:38:51,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51737 conditions, 9046 events. 5831/9046 cut-off events. For 172536/172584 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 53788 event pairs, 1609 based on Foata normal form. 33/8851 useless extension candidates. Maximal degree in co-relation 51662. Up to 8273 conditions per place. [2024-06-27 18:38:51,042 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 298 selfloop transitions, 32 changer transitions 0/337 dead transitions. [2024-06-27 18:38:51,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 337 transitions, 4605 flow [2024-06-27 18:38:51,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:38:51,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:38:51,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-06-27 18:38:51,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463768115942029 [2024-06-27 18:38:51,044 INFO L175 Difference]: Start difference. First operand has 169 places, 312 transitions, 3809 flow. Second operand 6 states and 128 transitions. [2024-06-27 18:38:51,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 337 transitions, 4605 flow [2024-06-27 18:38:51,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 337 transitions, 4360 flow, removed 35 selfloop flow, removed 4 redundant places. [2024-06-27 18:38:51,348 INFO L231 Difference]: Finished difference. Result has 171 places, 312 transitions, 3634 flow [2024-06-27 18:38:51,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3564, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3634, PETRI_PLACES=171, PETRI_TRANSITIONS=312} [2024-06-27 18:38:51,349 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 119 predicate places. [2024-06-27 18:38:51,349 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 312 transitions, 3634 flow [2024-06-27 18:38:51,350 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 18:38:51,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:51,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:51,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:38:51,350 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:51,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:51,350 INFO L85 PathProgramCache]: Analyzing trace with hash -455871183, now seen corresponding path program 1 times [2024-06-27 18:38:51,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:51,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831765693] [2024-06-27 18:38:51,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:51,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:51,842 INFO 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 18:38:51,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:51,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831765693] [2024-06-27 18:38:51,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831765693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:51,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:51,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:38:51,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780046872] [2024-06-27 18:38:51,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:51,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:38:51,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:51,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:38:51,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:38:51,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:38:51,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 312 transitions, 3634 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:51,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:51,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:38:51,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:53,061 INFO L124 PetriNetUnfolderBase]: 5507/8614 cut-off events. [2024-06-27 18:38:53,061 INFO L125 PetriNetUnfolderBase]: For 158910/158910 co-relation queries the response was YES. [2024-06-27 18:38:53,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48970 conditions, 8614 events. 5507/8614 cut-off events. For 158910/158910 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 52571 event pairs, 1373 based on Foata normal form. 2/8398 useless extension candidates. Maximal degree in co-relation 48894. Up to 7774 conditions per place. [2024-06-27 18:38:53,134 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 318 selfloop transitions, 23 changer transitions 0/352 dead transitions. [2024-06-27 18:38:53,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 352 transitions, 4625 flow [2024-06-27 18:38:53,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:38:53,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:38:53,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-27 18:38:53,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4963768115942029 [2024-06-27 18:38:53,136 INFO L175 Difference]: Start difference. First operand has 171 places, 312 transitions, 3634 flow. Second operand 6 states and 137 transitions. [2024-06-27 18:38:53,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 352 transitions, 4625 flow [2024-06-27 18:38:53,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 352 transitions, 4543 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 18:38:53,402 INFO L231 Difference]: Finished difference. Result has 174 places, 324 transitions, 3736 flow [2024-06-27 18:38:53,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3554, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3736, PETRI_PLACES=174, PETRI_TRANSITIONS=324} [2024-06-27 18:38:53,402 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 122 predicate places. [2024-06-27 18:38:53,403 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 324 transitions, 3736 flow [2024-06-27 18:38:53,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:53,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:53,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:53,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:38:53,403 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:53,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:53,404 INFO L85 PathProgramCache]: Analyzing trace with hash 381040467, now seen corresponding path program 2 times [2024-06-27 18:38:53,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:53,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555328673] [2024-06-27 18:38:53,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:53,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:53,904 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 18:38:53,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:53,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555328673] [2024-06-27 18:38:53,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555328673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:53,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:53,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:38:53,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136302517] [2024-06-27 18:38:53,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:53,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:38:53,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:53,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:38:53,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:38:53,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:38:53,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 324 transitions, 3736 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:53,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:53,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:38:53,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:55,161 INFO L124 PetriNetUnfolderBase]: 5460/8561 cut-off events. [2024-06-27 18:38:55,162 INFO L125 PetriNetUnfolderBase]: For 165140/165140 co-relation queries the response was YES. [2024-06-27 18:38:55,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50203 conditions, 8561 events. 5460/8561 cut-off events. For 165140/165140 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 52348 event pairs, 1426 based on Foata normal form. 2/8349 useless extension candidates. Maximal degree in co-relation 50125. Up to 7766 conditions per place. [2024-06-27 18:38:55,249 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 317 selfloop transitions, 15 changer transitions 0/343 dead transitions. [2024-06-27 18:38:55,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 343 transitions, 4486 flow [2024-06-27 18:38:55,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:38:55,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:38:55,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-06-27 18:38:55,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463768115942029 [2024-06-27 18:38:55,251 INFO L175 Difference]: Start difference. First operand has 174 places, 324 transitions, 3736 flow. Second operand 6 states and 128 transitions. [2024-06-27 18:38:55,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 343 transitions, 4486 flow [2024-06-27 18:38:55,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 343 transitions, 4446 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-06-27 18:38:55,550 INFO L231 Difference]: Finished difference. Result has 179 places, 324 transitions, 3733 flow [2024-06-27 18:38:55,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3696, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3733, PETRI_PLACES=179, PETRI_TRANSITIONS=324} [2024-06-27 18:38:55,551 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 127 predicate places. [2024-06-27 18:38:55,551 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 324 transitions, 3733 flow [2024-06-27 18:38:55,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:55,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:55,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:55,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:38:55,551 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 18:38:55,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:55,552 INFO L85 PathProgramCache]: Analyzing trace with hash -481631706, now seen corresponding path program 1 times [2024-06-27 18:38:55,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:55,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267315922] [2024-06-27 18:38:55,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:55,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:56,334 INFO 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 18:38:56,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:56,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267315922] [2024-06-27 18:38:56,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267315922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:56,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:56,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:38:56,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959222141] [2024-06-27 18:38:56,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:56,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:38:56,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:56,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:38:56,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:38:56,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:38:56,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 324 transitions, 3733 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 18:38:56,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:56,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:38:56,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:57,922 INFO L124 PetriNetUnfolderBase]: 6109/9355 cut-off events. [2024-06-27 18:38:57,923 INFO L125 PetriNetUnfolderBase]: For 207677/207697 co-relation queries the response was YES. [2024-06-27 18:38:57,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55560 conditions, 9355 events. 6109/9355 cut-off events. For 207677/207697 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 55422 event pairs, 1584 based on Foata normal form. 40/9203 useless extension candidates. Maximal degree in co-relation 55479. Up to 8278 conditions per place. [2024-06-27 18:38:58,026 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 326 selfloop transitions, 62 changer transitions 0/395 dead transitions. [2024-06-27 18:38:58,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 395 transitions, 4853 flow [2024-06-27 18:38:58,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:38:58,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:38:58,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 229 transitions. [2024-06-27 18:38:58,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49782608695652175 [2024-06-27 18:38:58,028 INFO L175 Difference]: Start difference. First operand has 179 places, 324 transitions, 3733 flow. Second operand 10 states and 229 transitions. [2024-06-27 18:38:58,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 395 transitions, 4853 flow [2024-06-27 18:38:58,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 395 transitions, 4803 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 18:38:58,379 INFO L231 Difference]: Finished difference. Result has 184 places, 329 transitions, 3905 flow [2024-06-27 18:38:58,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3683, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3905, PETRI_PLACES=184, PETRI_TRANSITIONS=329} [2024-06-27 18:38:58,380 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 132 predicate places. [2024-06-27 18:38:58,380 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 329 transitions, 3905 flow [2024-06-27 18:38:58,380 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 18:38:58,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:58,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:58,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:38:58,381 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:38:58,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:58,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1425671622, now seen corresponding path program 1 times [2024-06-27 18:38:58,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:58,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779349861] [2024-06-27 18:38:58,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:58,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:58,867 INFO 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 18:38:58,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:58,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779349861] [2024-06-27 18:38:58,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779349861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:58,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:58,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:38:58,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659557099] [2024-06-27 18:38:58,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:58,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:38:58,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:58,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:38:58,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:38:58,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:38:58,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 329 transitions, 3905 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:58,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:58,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:38:58,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:00,379 INFO L124 PetriNetUnfolderBase]: 6139/9512 cut-off events. [2024-06-27 18:39:00,379 INFO L125 PetriNetUnfolderBase]: For 211729/211741 co-relation queries the response was YES. [2024-06-27 18:39:00,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56783 conditions, 9512 events. 6139/9512 cut-off events. For 211729/211741 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 57022 event pairs, 1628 based on Foata normal form. 14/9295 useless extension candidates. Maximal degree in co-relation 56702. Up to 8564 conditions per place. [2024-06-27 18:39:00,479 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 321 selfloop transitions, 58 changer transitions 0/386 dead transitions. [2024-06-27 18:39:00,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 386 transitions, 5112 flow [2024-06-27 18:39:00,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:00,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:00,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-27 18:39:00,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937888198757764 [2024-06-27 18:39:00,481 INFO L175 Difference]: Start difference. First operand has 184 places, 329 transitions, 3905 flow. Second operand 7 states and 159 transitions. [2024-06-27 18:39:00,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 386 transitions, 5112 flow [2024-06-27 18:39:00,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 386 transitions, 4958 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 18:39:00,914 INFO L231 Difference]: Finished difference. Result has 185 places, 348 transitions, 4168 flow [2024-06-27 18:39:00,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3751, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4168, PETRI_PLACES=185, PETRI_TRANSITIONS=348} [2024-06-27 18:39:00,915 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 133 predicate places. [2024-06-27 18:39:00,915 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 348 transitions, 4168 flow [2024-06-27 18:39:00,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:00,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:00,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:00,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:39:00,916 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 18:39:00,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:00,916 INFO L85 PathProgramCache]: Analyzing trace with hash -309141816, now seen corresponding path program 2 times [2024-06-27 18:39:00,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:00,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130725040] [2024-06-27 18:39:00,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:00,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:00,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:01,560 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 18:39:01,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:01,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130725040] [2024-06-27 18:39:01,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130725040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:01,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:01,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:39:01,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551447050] [2024-06-27 18:39:01,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:01,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:39:01,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:01,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:39:01,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:39:01,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:39:01,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 348 transitions, 4168 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:01,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:01,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:39:01,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:03,287 INFO L124 PetriNetUnfolderBase]: 6298/9757 cut-off events. [2024-06-27 18:39:03,287 INFO L125 PetriNetUnfolderBase]: For 235529/235537 co-relation queries the response was YES. [2024-06-27 18:39:03,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59271 conditions, 9757 events. 6298/9757 cut-off events. For 235529/235537 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 58607 event pairs, 1575 based on Foata normal form. 28/9552 useless extension candidates. Maximal degree in co-relation 59187. Up to 8127 conditions per place. [2024-06-27 18:39:03,369 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 310 selfloop transitions, 92 changer transitions 0/409 dead transitions. [2024-06-27 18:39:03,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 409 transitions, 5316 flow [2024-06-27 18:39:03,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:39:03,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:39:03,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-27 18:39:03,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5024154589371981 [2024-06-27 18:39:03,385 INFO L175 Difference]: Start difference. First operand has 185 places, 348 transitions, 4168 flow. Second operand 9 states and 208 transitions. [2024-06-27 18:39:03,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 409 transitions, 5316 flow [2024-06-27 18:39:03,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 409 transitions, 5210 flow, removed 52 selfloop flow, removed 1 redundant places. [2024-06-27 18:39:03,733 INFO L231 Difference]: Finished difference. Result has 193 places, 353 transitions, 4375 flow [2024-06-27 18:39:03,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4062, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4375, PETRI_PLACES=193, PETRI_TRANSITIONS=353} [2024-06-27 18:39:03,741 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 141 predicate places. [2024-06-27 18:39:03,741 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 353 transitions, 4375 flow [2024-06-27 18:39:03,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:03,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:03,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:03,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:39:03,742 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 18:39:03,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:03,743 INFO L85 PathProgramCache]: Analyzing trace with hash 957094042, now seen corresponding path program 3 times [2024-06-27 18:39:03,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:03,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431569306] [2024-06-27 18:39:03,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:03,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:04,318 INFO 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 18:39:04,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:04,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431569306] [2024-06-27 18:39:04,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431569306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:04,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:04,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:39:04,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124868120] [2024-06-27 18:39:04,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:04,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:39:04,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:04,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:39:04,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:39:04,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:39:04,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 353 transitions, 4375 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:04,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:04,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:39:04,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:06,065 INFO L124 PetriNetUnfolderBase]: 6592/10201 cut-off events. [2024-06-27 18:39:06,066 INFO L125 PetriNetUnfolderBase]: For 272049/272057 co-relation queries the response was YES. [2024-06-27 18:39:06,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64232 conditions, 10201 events. 6592/10201 cut-off events. For 272049/272057 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 61686 event pairs, 1613 based on Foata normal form. 24/9994 useless extension candidates. Maximal degree in co-relation 64145. Up to 7932 conditions per place. [2024-06-27 18:39:06,182 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 318 selfloop transitions, 99 changer transitions 0/424 dead transitions. [2024-06-27 18:39:06,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 424 transitions, 5795 flow [2024-06-27 18:39:06,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:39:06,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:39:06,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-27 18:39:06,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120772946859904 [2024-06-27 18:39:06,183 INFO L175 Difference]: Start difference. First operand has 193 places, 353 transitions, 4375 flow. Second operand 9 states and 212 transitions. [2024-06-27 18:39:06,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 424 transitions, 5795 flow [2024-06-27 18:39:06,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 424 transitions, 5560 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-27 18:39:06,852 INFO L231 Difference]: Finished difference. Result has 196 places, 361 transitions, 4570 flow [2024-06-27 18:39:06,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4140, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4570, PETRI_PLACES=196, PETRI_TRANSITIONS=361} [2024-06-27 18:39:06,852 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 144 predicate places. [2024-06-27 18:39:06,853 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 361 transitions, 4570 flow [2024-06-27 18:39:06,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:06,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:06,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:06,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:39:06,853 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:06,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:06,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1425342929, now seen corresponding path program 1 times [2024-06-27 18:39:06,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:06,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10596151] [2024-06-27 18:39:06,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:06,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:07,319 INFO 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 18:39:07,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:07,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10596151] [2024-06-27 18:39:07,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10596151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:07,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:07,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:07,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675933254] [2024-06-27 18:39:07,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:07,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:07,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:07,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:07,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:07,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:39:07,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 361 transitions, 4570 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:07,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:07,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:39:07,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:09,042 INFO L124 PetriNetUnfolderBase]: 6632/10251 cut-off events. [2024-06-27 18:39:09,042 INFO L125 PetriNetUnfolderBase]: For 273189/273201 co-relation queries the response was YES. [2024-06-27 18:39:09,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65073 conditions, 10251 events. 6632/10251 cut-off events. For 273189/273201 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 61994 event pairs, 1788 based on Foata normal form. 14/10036 useless extension candidates. Maximal degree in co-relation 64984. Up to 9369 conditions per place. [2024-06-27 18:39:09,145 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 352 selfloop transitions, 50 changer transitions 0/409 dead transitions. [2024-06-27 18:39:09,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 409 transitions, 5799 flow [2024-06-27 18:39:09,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:09,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:09,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-27 18:39:09,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937888198757764 [2024-06-27 18:39:09,146 INFO L175 Difference]: Start difference. First operand has 196 places, 361 transitions, 4570 flow. Second operand 7 states and 159 transitions. [2024-06-27 18:39:09,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 409 transitions, 5799 flow [2024-06-27 18:39:09,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 409 transitions, 5674 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-27 18:39:09,728 INFO L231 Difference]: Finished difference. Result has 199 places, 367 transitions, 4650 flow [2024-06-27 18:39:09,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4445, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4650, PETRI_PLACES=199, PETRI_TRANSITIONS=367} [2024-06-27 18:39:09,729 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 147 predicate places. [2024-06-27 18:39:09,729 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 367 transitions, 4650 flow [2024-06-27 18:39:09,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:09,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:09,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:09,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:39:09,730 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:09,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:09,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1425343332, now seen corresponding path program 2 times [2024-06-27 18:39:09,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:09,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610977669] [2024-06-27 18:39:09,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:09,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:10,172 INFO 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 18:39:10,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:10,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610977669] [2024-06-27 18:39:10,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610977669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:10,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:10,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:10,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46138617] [2024-06-27 18:39:10,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:10,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:10,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:10,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:10,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:10,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:39:10,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 367 transitions, 4650 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:10,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:10,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:39:10,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:11,844 INFO L124 PetriNetUnfolderBase]: 6662/10305 cut-off events. [2024-06-27 18:39:11,844 INFO L125 PetriNetUnfolderBase]: For 275306/275314 co-relation queries the response was YES. [2024-06-27 18:39:11,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65562 conditions, 10305 events. 6662/10305 cut-off events. For 275306/275314 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 62450 event pairs, 1788 based on Foata normal form. 10/10081 useless extension candidates. Maximal degree in co-relation 65471. Up to 9336 conditions per place. [2024-06-27 18:39:11,948 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 334 selfloop transitions, 62 changer transitions 0/403 dead transitions. [2024-06-27 18:39:11,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 403 transitions, 5702 flow [2024-06-27 18:39:11,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:11,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:11,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-27 18:39:11,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4813664596273292 [2024-06-27 18:39:11,955 INFO L175 Difference]: Start difference. First operand has 199 places, 367 transitions, 4650 flow. Second operand 7 states and 155 transitions. [2024-06-27 18:39:11,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 403 transitions, 5702 flow [2024-06-27 18:39:12,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 403 transitions, 5635 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 18:39:12,520 INFO L231 Difference]: Finished difference. Result has 203 places, 372 transitions, 4777 flow [2024-06-27 18:39:12,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4583, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4777, PETRI_PLACES=203, PETRI_TRANSITIONS=372} [2024-06-27 18:39:12,521 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 151 predicate places. [2024-06-27 18:39:12,521 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 372 transitions, 4777 flow [2024-06-27 18:39:12,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:12,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:12,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:12,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:39:12,522 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 18:39:12,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:12,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1081580762, now seen corresponding path program 4 times [2024-06-27 18:39:12,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:12,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302131099] [2024-06-27 18:39:12,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:12,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:13,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:13,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:13,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302131099] [2024-06-27 18:39:13,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302131099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:13,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:13,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:39:13,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73212420] [2024-06-27 18:39:13,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:13,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:39:13,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:13,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:39:13,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:39:13,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:39:13,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 372 transitions, 4777 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:13,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:13,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:39:13,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:15,154 INFO L124 PetriNetUnfolderBase]: 7207/11131 cut-off events. [2024-06-27 18:39:15,155 INFO L125 PetriNetUnfolderBase]: For 326446/326473 co-relation queries the response was YES. [2024-06-27 18:39:15,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72042 conditions, 11131 events. 7207/11131 cut-off events. For 326446/326473 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 68434 event pairs, 1542 based on Foata normal form. 30/10915 useless extension candidates. Maximal degree in co-relation 71949. Up to 8818 conditions per place. [2024-06-27 18:39:15,270 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 288 selfloop transitions, 152 changer transitions 0/447 dead transitions. [2024-06-27 18:39:15,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 447 transitions, 6319 flow [2024-06-27 18:39:15,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:39:15,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:39:15,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-27 18:39:15,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5241545893719807 [2024-06-27 18:39:15,272 INFO L175 Difference]: Start difference. First operand has 203 places, 372 transitions, 4777 flow. Second operand 9 states and 217 transitions. [2024-06-27 18:39:15,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 447 transitions, 6319 flow [2024-06-27 18:39:15,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 447 transitions, 6217 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-27 18:39:15,954 INFO L231 Difference]: Finished difference. Result has 210 places, 385 transitions, 5263 flow [2024-06-27 18:39:15,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4675, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5263, PETRI_PLACES=210, PETRI_TRANSITIONS=385} [2024-06-27 18:39:15,955 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 158 predicate places. [2024-06-27 18:39:15,955 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 385 transitions, 5263 flow [2024-06-27 18:39:15,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:15,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:15,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:15,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:39:15,956 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 18:39:15,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:15,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1081341752, now seen corresponding path program 5 times [2024-06-27 18:39:15,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:15,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134456268] [2024-06-27 18:39:15,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:15,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:16,700 INFO 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 18:39:16,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:16,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134456268] [2024-06-27 18:39:16,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134456268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:16,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:16,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:39:16,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346364498] [2024-06-27 18:39:16,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:16,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:39:16,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:16,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:39:16,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:39:16,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:39:16,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 385 transitions, 5263 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 18:39:16,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:16,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:39:16,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:18,711 INFO L124 PetriNetUnfolderBase]: 7479/11531 cut-off events. [2024-06-27 18:39:18,712 INFO L125 PetriNetUnfolderBase]: For 366272/366299 co-relation queries the response was YES. [2024-06-27 18:39:18,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76800 conditions, 11531 events. 7479/11531 cut-off events. For 366272/366299 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 71134 event pairs, 1578 based on Foata normal form. 34/11319 useless extension candidates. Maximal degree in co-relation 76705. Up to 9390 conditions per place. [2024-06-27 18:39:18,825 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 297 selfloop transitions, 158 changer transitions 0/462 dead transitions. [2024-06-27 18:39:18,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 462 transitions, 6675 flow [2024-06-27 18:39:18,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:39:18,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:39:18,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 236 transitions. [2024-06-27 18:39:18,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130434782608696 [2024-06-27 18:39:18,826 INFO L175 Difference]: Start difference. First operand has 210 places, 385 transitions, 5263 flow. Second operand 10 states and 236 transitions. [2024-06-27 18:39:18,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 462 transitions, 6675 flow [2024-06-27 18:39:19,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 462 transitions, 6490 flow, removed 39 selfloop flow, removed 3 redundant places. [2024-06-27 18:39:19,663 INFO L231 Difference]: Finished difference. Result has 219 places, 398 transitions, 5674 flow [2024-06-27 18:39:19,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5082, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5674, PETRI_PLACES=219, PETRI_TRANSITIONS=398} [2024-06-27 18:39:19,664 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 167 predicate places. [2024-06-27 18:39:19,664 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 398 transitions, 5674 flow [2024-06-27 18:39:19,665 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 18:39:19,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:19,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:19,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:39:19,665 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 18:39:19,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:19,665 INFO L85 PathProgramCache]: Analyzing trace with hash 738381180, now seen corresponding path program 6 times [2024-06-27 18:39:19,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:19,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91305960] [2024-06-27 18:39:19,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:19,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:20,303 INFO 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 18:39:20,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:20,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91305960] [2024-06-27 18:39:20,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91305960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:20,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:20,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:39:20,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718340711] [2024-06-27 18:39:20,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:20,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:39:20,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:20,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:39:20,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:39:20,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:39:20,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 398 transitions, 5674 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:20,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:20,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:39:20,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:22,404 INFO L124 PetriNetUnfolderBase]: 7744/11941 cut-off events. [2024-06-27 18:39:22,405 INFO L125 PetriNetUnfolderBase]: For 392402/392429 co-relation queries the response was YES. [2024-06-27 18:39:22,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81117 conditions, 11941 events. 7744/11941 cut-off events. For 392402/392429 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 74001 event pairs, 1420 based on Foata normal form. 30/11724 useless extension candidates. Maximal degree in co-relation 81018. Up to 7505 conditions per place. [2024-06-27 18:39:22,556 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 279 selfloop transitions, 194 changer transitions 0/480 dead transitions. [2024-06-27 18:39:22,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 480 transitions, 7447 flow [2024-06-27 18:39:22,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:39:22,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:39:22,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-27 18:39:22,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5144927536231884 [2024-06-27 18:39:22,558 INFO L175 Difference]: Start difference. First operand has 219 places, 398 transitions, 5674 flow. Second operand 9 states and 213 transitions. [2024-06-27 18:39:22,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 480 transitions, 7447 flow [2024-06-27 18:39:23,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 480 transitions, 7096 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 18:39:23,564 INFO L231 Difference]: Finished difference. Result has 224 places, 413 transitions, 6162 flow [2024-06-27 18:39:23,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5323, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6162, PETRI_PLACES=224, PETRI_TRANSITIONS=413} [2024-06-27 18:39:23,565 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 172 predicate places. [2024-06-27 18:39:23,565 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 413 transitions, 6162 flow [2024-06-27 18:39:23,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:23,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:23,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:23,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:39:23,566 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 18:39:23,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:23,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1619506192, now seen corresponding path program 7 times [2024-06-27 18:39:23,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:23,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310927194] [2024-06-27 18:39:23,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:23,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:24,220 INFO 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 18:39:24,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:24,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310927194] [2024-06-27 18:39:24,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310927194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:24,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:24,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:39:24,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256266445] [2024-06-27 18:39:24,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:24,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:39:24,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:24,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:39:24,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:39:24,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:39:24,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 413 transitions, 6162 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:24,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:24,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:39:24,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:26,478 INFO L124 PetriNetUnfolderBase]: 7864/12125 cut-off events. [2024-06-27 18:39:26,479 INFO L125 PetriNetUnfolderBase]: For 419211/419238 co-relation queries the response was YES. [2024-06-27 18:39:26,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84697 conditions, 12125 events. 7864/12125 cut-off events. For 419211/419238 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 75592 event pairs, 1608 based on Foata normal form. 30/11908 useless extension candidates. Maximal degree in co-relation 84595. Up to 9740 conditions per place. [2024-06-27 18:39:26,615 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 313 selfloop transitions, 162 changer transitions 0/482 dead transitions. [2024-06-27 18:39:26,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 482 transitions, 7765 flow [2024-06-27 18:39:26,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:39:26,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:39:26,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-27 18:39:26,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5193236714975845 [2024-06-27 18:39:26,621 INFO L175 Difference]: Start difference. First operand has 224 places, 413 transitions, 6162 flow. Second operand 9 states and 215 transitions. [2024-06-27 18:39:26,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 482 transitions, 7765 flow [2024-06-27 18:39:27,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 482 transitions, 7511 flow, removed 88 selfloop flow, removed 3 redundant places. [2024-06-27 18:39:27,667 INFO L231 Difference]: Finished difference. Result has 231 places, 419 transitions, 6475 flow [2024-06-27 18:39:27,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5908, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6475, PETRI_PLACES=231, PETRI_TRANSITIONS=419} [2024-06-27 18:39:27,668 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 179 predicate places. [2024-06-27 18:39:27,668 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 419 transitions, 6475 flow [2024-06-27 18:39:27,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:27,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:27,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:27,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:39:27,670 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 18:39:27,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:27,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1075085642, now seen corresponding path program 8 times [2024-06-27 18:39:27,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:27,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656246910] [2024-06-27 18:39:27,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:27,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:28,482 INFO 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 18:39:28,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:28,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656246910] [2024-06-27 18:39:28,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656246910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:28,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:28,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:39:28,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147495707] [2024-06-27 18:39:28,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:28,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:39:28,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:28,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:39:28,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:39:28,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:39:28,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 419 transitions, 6475 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 18:39:28,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:28,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:39:28,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:30,794 INFO L124 PetriNetUnfolderBase]: 7828/12069 cut-off events. [2024-06-27 18:39:30,795 INFO L125 PetriNetUnfolderBase]: For 405945/405972 co-relation queries the response was YES. [2024-06-27 18:39:30,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83652 conditions, 12069 events. 7828/12069 cut-off events. For 405945/405972 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 75241 event pairs, 1633 based on Foata normal form. 34/11856 useless extension candidates. Maximal degree in co-relation 83547. Up to 10123 conditions per place. [2024-06-27 18:39:30,939 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 314 selfloop transitions, 168 changer transitions 0/489 dead transitions. [2024-06-27 18:39:30,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 489 transitions, 7874 flow [2024-06-27 18:39:30,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:39:30,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:39:30,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 235 transitions. [2024-06-27 18:39:30,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2024-06-27 18:39:30,941 INFO L175 Difference]: Start difference. First operand has 231 places, 419 transitions, 6475 flow. Second operand 10 states and 235 transitions. [2024-06-27 18:39:30,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 489 transitions, 7874 flow [2024-06-27 18:39:32,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 489 transitions, 7479 flow, removed 92 selfloop flow, removed 5 redundant places. [2024-06-27 18:39:32,099 INFO L231 Difference]: Finished difference. Result has 237 places, 425 transitions, 6620 flow [2024-06-27 18:39:32,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6128, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6620, PETRI_PLACES=237, PETRI_TRANSITIONS=425} [2024-06-27 18:39:32,100 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 185 predicate places. [2024-06-27 18:39:32,100 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 425 transitions, 6620 flow [2024-06-27 18:39:32,100 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 18:39:32,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:32,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:32,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:39:32,101 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 18:39:32,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:32,101 INFO L85 PathProgramCache]: Analyzing trace with hash 442922970, now seen corresponding path program 9 times [2024-06-27 18:39:32,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:32,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136719081] [2024-06-27 18:39:32,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:32,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:32,934 INFO 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 18:39:32,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:32,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136719081] [2024-06-27 18:39:32,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136719081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:32,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:32,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:39:32,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524459251] [2024-06-27 18:39:32,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:32,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:39:32,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:32,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:39:32,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:39:32,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:39:33,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 425 transitions, 6620 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 18:39:33,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:33,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:39:33,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:35,193 INFO L124 PetriNetUnfolderBase]: 7792/12013 cut-off events. [2024-06-27 18:39:35,193 INFO L125 PetriNetUnfolderBase]: For 370539/370566 co-relation queries the response was YES. [2024-06-27 18:39:35,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81848 conditions, 12013 events. 7792/12013 cut-off events. For 370539/370566 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 74796 event pairs, 1596 based on Foata normal form. 34/11800 useless extension candidates. Maximal degree in co-relation 81740. Up to 9869 conditions per place. [2024-06-27 18:39:35,322 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 319 selfloop transitions, 169 changer transitions 0/495 dead transitions. [2024-06-27 18:39:35,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 495 transitions, 8041 flow [2024-06-27 18:39:35,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:39:35,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:39:35,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 232 transitions. [2024-06-27 18:39:35,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5043478260869565 [2024-06-27 18:39:35,324 INFO L175 Difference]: Start difference. First operand has 237 places, 425 transitions, 6620 flow. Second operand 10 states and 232 transitions. [2024-06-27 18:39:35,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 495 transitions, 8041 flow [2024-06-27 18:39:36,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 495 transitions, 7578 flow, removed 58 selfloop flow, removed 7 redundant places. [2024-06-27 18:39:36,402 INFO L231 Difference]: Finished difference. Result has 241 places, 431 transitions, 6695 flow [2024-06-27 18:39:36,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6207, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6695, PETRI_PLACES=241, PETRI_TRANSITIONS=431} [2024-06-27 18:39:36,403 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 189 predicate places. [2024-06-27 18:39:36,403 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 431 transitions, 6695 flow [2024-06-27 18:39:36,403 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 18:39:36,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:36,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:36,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:39:36,404 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:36,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:36,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1041558372, now seen corresponding path program 3 times [2024-06-27 18:39:36,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:36,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493184260] [2024-06-27 18:39:36,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:36,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:36,846 INFO 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 18:39:36,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:36,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493184260] [2024-06-27 18:39:36,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493184260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:36,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:36,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:36,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530247570] [2024-06-27 18:39:36,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:36,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:36,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:36,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:36,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:36,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:39:36,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 431 transitions, 6695 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:36,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:36,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:39:36,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:39,001 INFO L124 PetriNetUnfolderBase]: 7786/12005 cut-off events. [2024-06-27 18:39:39,002 INFO L125 PetriNetUnfolderBase]: For 357820/357847 co-relation queries the response was YES. [2024-06-27 18:39:39,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81192 conditions, 12005 events. 7786/12005 cut-off events. For 357820/357847 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 74391 event pairs, 2073 based on Foata normal form. 16/11774 useless extension candidates. Maximal degree in co-relation 81083. Up to 11033 conditions per place. [2024-06-27 18:39:39,139 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 388 selfloop transitions, 62 changer transitions 0/457 dead transitions. [2024-06-27 18:39:39,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 457 transitions, 7712 flow [2024-06-27 18:39:39,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:39,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:39,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 148 transitions. [2024-06-27 18:39:39,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45962732919254656 [2024-06-27 18:39:39,141 INFO L175 Difference]: Start difference. First operand has 241 places, 431 transitions, 6695 flow. Second operand 7 states and 148 transitions. [2024-06-27 18:39:39,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 457 transitions, 7712 flow [2024-06-27 18:39:40,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 457 transitions, 7345 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 18:39:40,034 INFO L231 Difference]: Finished difference. Result has 242 places, 431 transitions, 6459 flow [2024-06-27 18:39:40,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6328, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6459, PETRI_PLACES=242, PETRI_TRANSITIONS=431} [2024-06-27 18:39:40,035 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 190 predicate places. [2024-06-27 18:39:40,035 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 431 transitions, 6459 flow [2024-06-27 18:39:40,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:40,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:40,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:40,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:39:40,036 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:40,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:40,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1904000375, now seen corresponding path program 2 times [2024-06-27 18:39:40,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:40,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152441159] [2024-06-27 18:39:40,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:40,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:40,490 INFO 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 18:39:40,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:40,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152441159] [2024-06-27 18:39:40,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152441159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:40,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:40,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:40,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782882973] [2024-06-27 18:39:40,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:40,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:40,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:40,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:40,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:40,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:39:40,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 431 transitions, 6459 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:40,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:40,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:39:40,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:42,709 INFO L124 PetriNetUnfolderBase]: 7826/12052 cut-off events. [2024-06-27 18:39:42,710 INFO L125 PetriNetUnfolderBase]: For 361981/362023 co-relation queries the response was YES. [2024-06-27 18:39:42,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80985 conditions, 12052 events. 7826/12052 cut-off events. For 361981/362023 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 74599 event pairs, 2074 based on Foata normal form. 30/11845 useless extension candidates. Maximal degree in co-relation 80875. Up to 11138 conditions per place. [2024-06-27 18:39:42,873 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 409 selfloop transitions, 53 changer transitions 0/469 dead transitions. [2024-06-27 18:39:42,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 469 transitions, 7743 flow [2024-06-27 18:39:42,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:42,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:42,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-27 18:39:42,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4751552795031056 [2024-06-27 18:39:42,874 INFO L175 Difference]: Start difference. First operand has 242 places, 431 transitions, 6459 flow. Second operand 7 states and 153 transitions. [2024-06-27 18:39:42,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 469 transitions, 7743 flow [2024-06-27 18:39:43,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 469 transitions, 7568 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 18:39:43,709 INFO L231 Difference]: Finished difference. Result has 244 places, 434 transitions, 6443 flow [2024-06-27 18:39:43,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6284, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6443, PETRI_PLACES=244, PETRI_TRANSITIONS=434} [2024-06-27 18:39:43,709 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 192 predicate places. [2024-06-27 18:39:43,710 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 434 transitions, 6443 flow [2024-06-27 18:39:43,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:43,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:43,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:43,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:39:43,710 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:43,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:43,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1903554905, now seen corresponding path program 3 times [2024-06-27 18:39:43,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:43,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757046596] [2024-06-27 18:39:43,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:43,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:44,233 INFO 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 18:39:44,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:44,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757046596] [2024-06-27 18:39:44,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757046596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:44,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:44,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:44,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55512862] [2024-06-27 18:39:44,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:44,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:44,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:44,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:44,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:44,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:39:44,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 434 transitions, 6443 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:44,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:44,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:39:44,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:46,516 INFO L124 PetriNetUnfolderBase]: 7820/12049 cut-off events. [2024-06-27 18:39:46,516 INFO L125 PetriNetUnfolderBase]: For 365502/365502 co-relation queries the response was YES. [2024-06-27 18:39:46,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81021 conditions, 12049 events. 7820/12049 cut-off events. For 365502/365502 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 74654 event pairs, 2109 based on Foata normal form. 2/11816 useless extension candidates. Maximal degree in co-relation 80910. Up to 11250 conditions per place. [2024-06-27 18:39:46,655 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 429 selfloop transitions, 27 changer transitions 0/463 dead transitions. [2024-06-27 18:39:46,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 463 transitions, 7516 flow [2024-06-27 18:39:46,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:46,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:46,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-27 18:39:46,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45652173913043476 [2024-06-27 18:39:46,657 INFO L175 Difference]: Start difference. First operand has 244 places, 434 transitions, 6443 flow. Second operand 7 states and 147 transitions. [2024-06-27 18:39:46,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 463 transitions, 7516 flow [2024-06-27 18:39:47,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 463 transitions, 7352 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 18:39:47,508 INFO L231 Difference]: Finished difference. Result has 246 places, 434 transitions, 6340 flow [2024-06-27 18:39:47,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6279, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6340, PETRI_PLACES=246, PETRI_TRANSITIONS=434} [2024-06-27 18:39:47,508 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 194 predicate places. [2024-06-27 18:39:47,509 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 434 transitions, 6340 flow [2024-06-27 18:39:47,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:47,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:47,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:47,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:39:47,509 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:47,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:47,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1045318748, now seen corresponding path program 1 times [2024-06-27 18:39:47,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:47,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035397067] [2024-06-27 18:39:47,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:47,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:48,057 INFO 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 18:39:48,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:48,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035397067] [2024-06-27 18:39:48,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035397067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:48,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:48,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:48,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602290218] [2024-06-27 18:39:48,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:48,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:48,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:48,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:48,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:48,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:48,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 434 transitions, 6340 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:39:48,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:48,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:48,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:50,146 INFO L124 PetriNetUnfolderBase]: 7433/11530 cut-off events. [2024-06-27 18:39:50,147 INFO L125 PetriNetUnfolderBase]: For 335489/335511 co-relation queries the response was YES. [2024-06-27 18:39:50,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77925 conditions, 11530 events. 7433/11530 cut-off events. For 335489/335511 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 72946 event pairs, 1775 based on Foata normal form. 8/11289 useless extension candidates. Maximal degree in co-relation 77813. Up to 10650 conditions per place. [2024-06-27 18:39:50,297 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 433 selfloop transitions, 21 changer transitions 0/471 dead transitions. [2024-06-27 18:39:50,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 471 transitions, 7485 flow [2024-06-27 18:39:50,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:50,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:50,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-27 18:39:50,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484472049689441 [2024-06-27 18:39:50,298 INFO L175 Difference]: Start difference. First operand has 246 places, 434 transitions, 6340 flow. Second operand 7 states and 156 transitions. [2024-06-27 18:39:50,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 471 transitions, 7485 flow [2024-06-27 18:39:51,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 471 transitions, 7362 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 18:39:51,211 INFO L231 Difference]: Finished difference. Result has 245 places, 437 transitions, 6324 flow [2024-06-27 18:39:51,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6217, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6324, PETRI_PLACES=245, PETRI_TRANSITIONS=437} [2024-06-27 18:39:51,212 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 193 predicate places. [2024-06-27 18:39:51,212 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 437 transitions, 6324 flow [2024-06-27 18:39:51,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:39:51,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:51,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:51,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:39:51,213 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:51,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:51,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1301614048, now seen corresponding path program 2 times [2024-06-27 18:39:51,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:51,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344269767] [2024-06-27 18:39:51,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:51,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:51,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:51,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:51,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344269767] [2024-06-27 18:39:51,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344269767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:51,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:51,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:51,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374852862] [2024-06-27 18:39:51,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:51,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:51,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:51,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:51,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:51,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:51,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 437 transitions, 6324 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:39:51,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:51,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:51,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:53,747 INFO L124 PetriNetUnfolderBase]: 7509/11641 cut-off events. [2024-06-27 18:39:53,747 INFO L125 PetriNetUnfolderBase]: For 347869/347891 co-relation queries the response was YES. [2024-06-27 18:39:53,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79706 conditions, 11641 events. 7509/11641 cut-off events. For 347869/347891 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 73655 event pairs, 1784 based on Foata normal form. 8/11399 useless extension candidates. Maximal degree in co-relation 79595. Up to 10616 conditions per place. [2024-06-27 18:39:53,888 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 427 selfloop transitions, 35 changer transitions 0/479 dead transitions. [2024-06-27 18:39:53,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 479 transitions, 7709 flow [2024-06-27 18:39:53,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:53,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:53,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 18:39:53,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968944099378882 [2024-06-27 18:39:53,890 INFO L175 Difference]: Start difference. First operand has 245 places, 437 transitions, 6324 flow. Second operand 7 states and 160 transitions. [2024-06-27 18:39:53,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 479 transitions, 7709 flow [2024-06-27 18:39:54,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 479 transitions, 7640 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 18:39:54,905 INFO L231 Difference]: Finished difference. Result has 247 places, 443 transitions, 6453 flow [2024-06-27 18:39:54,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6255, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6453, PETRI_PLACES=247, PETRI_TRANSITIONS=443} [2024-06-27 18:39:54,906 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 195 predicate places. [2024-06-27 18:39:54,906 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 443 transitions, 6453 flow [2024-06-27 18:39:54,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:39:54,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:54,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:54,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:39:54,907 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:54,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:54,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1072646188, now seen corresponding path program 3 times [2024-06-27 18:39:54,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:54,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41328317] [2024-06-27 18:39:54,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:54,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:55,347 INFO 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 18:39:55,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:55,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41328317] [2024-06-27 18:39:55,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41328317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:55,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:55,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:55,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029200064] [2024-06-27 18:39:55,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:55,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:55,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:55,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:55,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:55,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:39:55,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 443 transitions, 6453 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:39:55,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:55,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:39:55,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:57,445 INFO L124 PetriNetUnfolderBase]: 7483/11623 cut-off events. [2024-06-27 18:39:57,446 INFO L125 PetriNetUnfolderBase]: For 358145/358167 co-relation queries the response was YES. [2024-06-27 18:39:57,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80096 conditions, 11623 events. 7483/11623 cut-off events. For 358145/358167 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 73351 event pairs, 1926 based on Foata normal form. 8/11391 useless extension candidates. Maximal degree in co-relation 79984. Up to 10708 conditions per place. [2024-06-27 18:39:57,595 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 434 selfloop transitions, 18 changer transitions 0/469 dead transitions. [2024-06-27 18:39:57,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 469 transitions, 7509 flow [2024-06-27 18:39:57,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:57,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:57,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-06-27 18:39:57,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46273291925465837 [2024-06-27 18:39:57,597 INFO L175 Difference]: Start difference. First operand has 247 places, 443 transitions, 6453 flow. Second operand 7 states and 149 transitions. [2024-06-27 18:39:57,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 469 transitions, 7509 flow [2024-06-27 18:39:58,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 469 transitions, 7423 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-27 18:39:58,671 INFO L231 Difference]: Finished difference. Result has 251 places, 443 transitions, 6409 flow [2024-06-27 18:39:58,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6367, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6409, PETRI_PLACES=251, PETRI_TRANSITIONS=443} [2024-06-27 18:39:58,672 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 199 predicate places. [2024-06-27 18:39:58,672 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 443 transitions, 6409 flow [2024-06-27 18:39:58,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:39:58,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:58,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:58,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:39:58,672 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:39:58,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:58,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1041096627, now seen corresponding path program 1 times [2024-06-27 18:39:58,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:58,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810298450] [2024-06-27 18:39:58,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:58,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:58,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:59,389 INFO 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 18:39:59,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:59,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810298450] [2024-06-27 18:39:59,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810298450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:59,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:59,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:59,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25233636] [2024-06-27 18:39:59,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:59,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:59,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:59,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:59,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:59,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:39:59,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 443 transitions, 6409 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:59,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:59,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:39:59,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:01,634 INFO L124 PetriNetUnfolderBase]: 7965/12272 cut-off events. [2024-06-27 18:40:01,634 INFO L125 PetriNetUnfolderBase]: For 402162/402162 co-relation queries the response was YES. [2024-06-27 18:40:01,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83905 conditions, 12272 events. 7965/12272 cut-off events. For 402162/402162 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 76075 event pairs, 2158 based on Foata normal form. 2/12030 useless extension candidates. Maximal degree in co-relation 83791. Up to 11453 conditions per place. [2024-06-27 18:40:01,806 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 441 selfloop transitions, 26 changer transitions 0/474 dead transitions. [2024-06-27 18:40:01,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 474 transitions, 7545 flow [2024-06-27 18:40:01,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:01,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:01,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2024-06-27 18:40:01,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453416149068323 [2024-06-27 18:40:01,807 INFO L175 Difference]: Start difference. First operand has 251 places, 443 transitions, 6409 flow. Second operand 7 states and 146 transitions. [2024-06-27 18:40:01,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 474 transitions, 7545 flow [2024-06-27 18:40:02,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 474 transitions, 7481 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:02,871 INFO L231 Difference]: Finished difference. Result has 252 places, 445 transitions, 6448 flow [2024-06-27 18:40:02,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6347, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6448, PETRI_PLACES=252, PETRI_TRANSITIONS=445} [2024-06-27 18:40:02,872 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 200 predicate places. [2024-06-27 18:40:02,872 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 445 transitions, 6448 flow [2024-06-27 18:40:02,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:02,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:02,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:02,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:40:02,873 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:02,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:02,874 INFO L85 PathProgramCache]: Analyzing trace with hash 934364752, now seen corresponding path program 1 times [2024-06-27 18:40:02,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:02,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634167371] [2024-06-27 18:40:02,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:02,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:03,983 INFO 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 18:40:03,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:03,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634167371] [2024-06-27 18:40:03,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634167371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:03,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:03,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:40:03,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456393521] [2024-06-27 18:40:03,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:03,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:40:03,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:03,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:40:03,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:40:04,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:40:04,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 445 transitions, 6448 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:04,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:04,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:40:04,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:06,368 INFO L124 PetriNetUnfolderBase]: 8051/12408 cut-off events. [2024-06-27 18:40:06,368 INFO L125 PetriNetUnfolderBase]: For 429174/429186 co-relation queries the response was YES. [2024-06-27 18:40:06,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85478 conditions, 12408 events. 8051/12408 cut-off events. For 429174/429186 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 76816 event pairs, 1622 based on Foata normal form. 24/12187 useless extension candidates. Maximal degree in co-relation 85363. Up to 11159 conditions per place. [2024-06-27 18:40:06,535 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 444 selfloop transitions, 64 changer transitions 0/515 dead transitions. [2024-06-27 18:40:06,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 515 transitions, 7812 flow [2024-06-27 18:40:06,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:40:06,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:40:06,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 222 transitions. [2024-06-27 18:40:06,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826086956521739 [2024-06-27 18:40:06,536 INFO L175 Difference]: Start difference. First operand has 252 places, 445 transitions, 6448 flow. Second operand 10 states and 222 transitions. [2024-06-27 18:40:06,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 515 transitions, 7812 flow [2024-06-27 18:40:07,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 515 transitions, 7735 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:07,613 INFO L231 Difference]: Finished difference. Result has 258 places, 452 transitions, 6630 flow [2024-06-27 18:40:07,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6371, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6630, PETRI_PLACES=258, PETRI_TRANSITIONS=452} [2024-06-27 18:40:07,614 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 206 predicate places. [2024-06-27 18:40:07,614 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 452 transitions, 6630 flow [2024-06-27 18:40:07,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:07,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:07,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:07,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:40:07,615 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:07,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:07,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1598589304, now seen corresponding path program 2 times [2024-06-27 18:40:07,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:07,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363447464] [2024-06-27 18:40:07,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:07,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:08,581 INFO 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 18:40:08,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:08,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363447464] [2024-06-27 18:40:08,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363447464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:08,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:08,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:08,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406543667] [2024-06-27 18:40:08,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:08,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:08,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:08,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:08,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:08,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:40:08,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 452 transitions, 6630 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:08,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:08,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:40:08,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:11,089 INFO L124 PetriNetUnfolderBase]: 8031/12285 cut-off events. [2024-06-27 18:40:11,089 INFO L125 PetriNetUnfolderBase]: For 430864/430872 co-relation queries the response was YES. [2024-06-27 18:40:11,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85609 conditions, 12285 events. 8031/12285 cut-off events. For 430864/430872 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 75939 event pairs, 1943 based on Foata normal form. 20/12090 useless extension candidates. Maximal degree in co-relation 85492. Up to 11002 conditions per place. [2024-06-27 18:40:11,496 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 421 selfloop transitions, 82 changer transitions 0/510 dead transitions. [2024-06-27 18:40:11,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 510 transitions, 7912 flow [2024-06-27 18:40:11,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:11,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:11,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 203 transitions. [2024-06-27 18:40:11,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49033816425120774 [2024-06-27 18:40:11,498 INFO L175 Difference]: Start difference. First operand has 258 places, 452 transitions, 6630 flow. Second operand 9 states and 203 transitions. [2024-06-27 18:40:11,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 510 transitions, 7912 flow [2024-06-27 18:40:12,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 510 transitions, 7688 flow, removed 59 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:12,634 INFO L231 Difference]: Finished difference. Result has 262 places, 456 transitions, 6649 flow [2024-06-27 18:40:12,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6406, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6649, PETRI_PLACES=262, PETRI_TRANSITIONS=456} [2024-06-27 18:40:12,635 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 210 predicate places. [2024-06-27 18:40:12,635 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 456 transitions, 6649 flow [2024-06-27 18:40:12,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:12,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:12,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:12,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:40:12,635 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:12,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:12,640 INFO L85 PathProgramCache]: Analyzing trace with hash -724992774, now seen corresponding path program 3 times [2024-06-27 18:40:12,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:12,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738200387] [2024-06-27 18:40:12,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:12,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:13,852 INFO 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 18:40:13,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:13,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738200387] [2024-06-27 18:40:13,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738200387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:13,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:13,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:40:13,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832237455] [2024-06-27 18:40:13,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:13,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:40:13,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:13,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:40:13,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:40:13,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:40:13,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 456 transitions, 6649 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:13,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:13,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:40:13,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:16,528 INFO L124 PetriNetUnfolderBase]: 8117/12420 cut-off events. [2024-06-27 18:40:16,528 INFO L125 PetriNetUnfolderBase]: For 443548/443560 co-relation queries the response was YES. [2024-06-27 18:40:16,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86337 conditions, 12420 events. 8117/12420 cut-off events. For 443548/443560 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 76967 event pairs, 1962 based on Foata normal form. 24/12229 useless extension candidates. Maximal degree in co-relation 86218. Up to 11239 conditions per place. [2024-06-27 18:40:16,670 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 448 selfloop transitions, 71 changer transitions 0/526 dead transitions. [2024-06-27 18:40:16,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 526 transitions, 8065 flow [2024-06-27 18:40:16,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:40:16,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:40:16,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 225 transitions. [2024-06-27 18:40:16,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-06-27 18:40:16,672 INFO L175 Difference]: Start difference. First operand has 262 places, 456 transitions, 6649 flow. Second operand 10 states and 225 transitions. [2024-06-27 18:40:16,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 526 transitions, 8065 flow [2024-06-27 18:40:17,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 526 transitions, 7885 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:17,869 INFO L231 Difference]: Finished difference. Result has 268 places, 461 transitions, 6746 flow [2024-06-27 18:40:17,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6470, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6746, PETRI_PLACES=268, PETRI_TRANSITIONS=461} [2024-06-27 18:40:17,870 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 216 predicate places. [2024-06-27 18:40:17,870 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 461 transitions, 6746 flow [2024-06-27 18:40:17,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:17,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:17,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:17,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:40:17,871 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:17,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:17,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1246145913, now seen corresponding path program 1 times [2024-06-27 18:40:17,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:17,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270403296] [2024-06-27 18:40:17,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:17,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:18,454 INFO 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 18:40:18,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:18,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270403296] [2024-06-27 18:40:18,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270403296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:18,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:18,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:18,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338240349] [2024-06-27 18:40:18,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:18,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:18,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:18,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:18,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:18,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:40:18,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 461 transitions, 6746 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:18,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:18,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:40:18,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:20,991 INFO L124 PetriNetUnfolderBase]: 8177/12501 cut-off events. [2024-06-27 18:40:20,991 INFO L125 PetriNetUnfolderBase]: For 453309/453321 co-relation queries the response was YES. [2024-06-27 18:40:21,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87438 conditions, 12501 events. 8177/12501 cut-off events. For 453309/453321 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 77401 event pairs, 2032 based on Foata normal form. 16/12302 useless extension candidates. Maximal degree in co-relation 87317. Up to 11374 conditions per place. [2024-06-27 18:40:21,133 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 441 selfloop transitions, 82 changer transitions 0/530 dead transitions. [2024-06-27 18:40:21,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 530 transitions, 8431 flow [2024-06-27 18:40:21,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:21,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:21,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 18:40:21,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027173913043478 [2024-06-27 18:40:21,134 INFO L175 Difference]: Start difference. First operand has 268 places, 461 transitions, 6746 flow. Second operand 8 states and 185 transitions. [2024-06-27 18:40:21,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 530 transitions, 8431 flow [2024-06-27 18:40:22,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 530 transitions, 8208 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-27 18:40:22,110 INFO L231 Difference]: Finished difference. Result has 271 places, 483 transitions, 7106 flow [2024-06-27 18:40:22,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6523, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7106, PETRI_PLACES=271, PETRI_TRANSITIONS=483} [2024-06-27 18:40:22,110 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 219 predicate places. [2024-06-27 18:40:22,111 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 483 transitions, 7106 flow [2024-06-27 18:40:22,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:22,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:22,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:22,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:40:22,111 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:22,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:22,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1242601776, now seen corresponding path program 1 times [2024-06-27 18:40:22,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:22,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299120611] [2024-06-27 18:40:22,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:22,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:22,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:22,611 INFO 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 18:40:22,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:22,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299120611] [2024-06-27 18:40:22,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299120611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:22,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:22,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:22,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732753015] [2024-06-27 18:40:22,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:22,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:22,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:22,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:22,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:22,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:40:22,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 483 transitions, 7106 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:22,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:22,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:40:22,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:24,897 INFO L124 PetriNetUnfolderBase]: 8220/12562 cut-off events. [2024-06-27 18:40:24,897 INFO L125 PetriNetUnfolderBase]: For 460052/460064 co-relation queries the response was YES. [2024-06-27 18:40:24,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88771 conditions, 12562 events. 8220/12562 cut-off events. For 460052/460064 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 77827 event pairs, 2045 based on Foata normal form. 13/12359 useless extension candidates. Maximal degree in co-relation 88647. Up to 11793 conditions per place. [2024-06-27 18:40:25,052 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 495 selfloop transitions, 33 changer transitions 0/535 dead transitions. [2024-06-27 18:40:25,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 535 transitions, 8704 flow [2024-06-27 18:40:25,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:25,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:25,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-27 18:40:25,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-27 18:40:25,053 INFO L175 Difference]: Start difference. First operand has 271 places, 483 transitions, 7106 flow. Second operand 7 states and 154 transitions. [2024-06-27 18:40:25,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 535 transitions, 8704 flow [2024-06-27 18:40:26,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 535 transitions, 8534 flow, removed 79 selfloop flow, removed 2 redundant places. [2024-06-27 18:40:26,278 INFO L231 Difference]: Finished difference. Result has 278 places, 498 transitions, 7260 flow [2024-06-27 18:40:26,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6936, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7260, PETRI_PLACES=278, PETRI_TRANSITIONS=498} [2024-06-27 18:40:26,279 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 226 predicate places. [2024-06-27 18:40:26,279 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 498 transitions, 7260 flow [2024-06-27 18:40:26,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:26,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:26,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:26,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:40:26,280 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:26,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:26,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1671936562, now seen corresponding path program 2 times [2024-06-27 18:40:26,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:26,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853993900] [2024-06-27 18:40:26,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:26,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:26,724 INFO 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 18:40:26,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:26,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853993900] [2024-06-27 18:40:26,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853993900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:26,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:26,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:26,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431270626] [2024-06-27 18:40:26,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:26,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:26,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:26,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:26,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:26,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:40:26,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 498 transitions, 7260 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:26,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:26,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:40:26,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:29,133 INFO L124 PetriNetUnfolderBase]: 8240/12592 cut-off events. [2024-06-27 18:40:29,134 INFO L125 PetriNetUnfolderBase]: For 475665/475677 co-relation queries the response was YES. [2024-06-27 18:40:29,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90035 conditions, 12592 events. 8240/12592 cut-off events. For 475665/475677 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 78046 event pairs, 2061 based on Foata normal form. 13/12388 useless extension candidates. Maximal degree in co-relation 89906. Up to 11861 conditions per place. [2024-06-27 18:40:29,304 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 497 selfloop transitions, 27 changer transitions 0/531 dead transitions. [2024-06-27 18:40:29,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 531 transitions, 8519 flow [2024-06-27 18:40:29,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:29,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:29,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-27 18:40:29,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45652173913043476 [2024-06-27 18:40:29,306 INFO L175 Difference]: Start difference. First operand has 278 places, 498 transitions, 7260 flow. Second operand 7 states and 147 transitions. [2024-06-27 18:40:29,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 531 transitions, 8519 flow [2024-06-27 18:40:30,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 531 transitions, 8401 flow, removed 58 selfloop flow, removed 1 redundant places. [2024-06-27 18:40:30,824 INFO L231 Difference]: Finished difference. Result has 284 places, 502 transitions, 7279 flow [2024-06-27 18:40:30,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7170, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7279, PETRI_PLACES=284, PETRI_TRANSITIONS=502} [2024-06-27 18:40:30,825 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 232 predicate places. [2024-06-27 18:40:30,825 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 502 transitions, 7279 flow [2024-06-27 18:40:30,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:30,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:30,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:30,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:40:30,825 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:30,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:30,826 INFO L85 PathProgramCache]: Analyzing trace with hash -601925420, now seen corresponding path program 4 times [2024-06-27 18:40:30,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:30,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722134604] [2024-06-27 18:40:30,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:30,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:32,040 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 18:40:32,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:32,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722134604] [2024-06-27 18:40:32,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722134604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:32,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:32,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:40:32,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194529410] [2024-06-27 18:40:32,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:32,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:40:32,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:32,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:40:32,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:40:32,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:40:32,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 502 transitions, 7279 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:32,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:32,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:40:32,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:35,119 INFO L124 PetriNetUnfolderBase]: 8326/12727 cut-off events. [2024-06-27 18:40:35,119 INFO L125 PetriNetUnfolderBase]: For 505427/505435 co-relation queries the response was YES. [2024-06-27 18:40:35,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91265 conditions, 12727 events. 8326/12727 cut-off events. For 505427/505435 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 79053 event pairs, 1994 based on Foata normal form. 20/12529 useless extension candidates. Maximal degree in co-relation 91133. Up to 11459 conditions per place. [2024-06-27 18:40:35,245 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 480 selfloop transitions, 82 changer transitions 0/569 dead transitions. [2024-06-27 18:40:35,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 569 transitions, 8808 flow [2024-06-27 18:40:35,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:40:35,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:40:35,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 226 transitions. [2024-06-27 18:40:35,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49130434782608695 [2024-06-27 18:40:35,247 INFO L175 Difference]: Start difference. First operand has 284 places, 502 transitions, 7279 flow. Second operand 10 states and 226 transitions. [2024-06-27 18:40:35,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 569 transitions, 8808 flow [2024-06-27 18:40:36,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 569 transitions, 8744 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 18:40:36,373 INFO L231 Difference]: Finished difference. Result has 291 places, 507 transitions, 7532 flow [2024-06-27 18:40:36,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7215, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7532, PETRI_PLACES=291, PETRI_TRANSITIONS=507} [2024-06-27 18:40:36,374 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 239 predicate places. [2024-06-27 18:40:36,374 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 507 transitions, 7532 flow [2024-06-27 18:40:36,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:36,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:36,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:36,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:40:36,375 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:36,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:36,375 INFO L85 PathProgramCache]: Analyzing trace with hash 844964413, now seen corresponding path program 2 times [2024-06-27 18:40:36,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:36,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371328545] [2024-06-27 18:40:36,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:36,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:36,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:36,971 INFO 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 18:40:36,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:36,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371328545] [2024-06-27 18:40:36,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371328545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:36,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:36,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:36,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373890331] [2024-06-27 18:40:36,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:36,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:36,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:36,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:36,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:37,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:40:37,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 507 transitions, 7532 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:37,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:37,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:40:37,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:39,616 INFO L124 PetriNetUnfolderBase]: 8458/12904 cut-off events. [2024-06-27 18:40:39,616 INFO L125 PetriNetUnfolderBase]: For 528820/528828 co-relation queries the response was YES. [2024-06-27 18:40:39,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93774 conditions, 12904 events. 8458/12904 cut-off events. For 528820/528828 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 80065 event pairs, 2087 based on Foata normal form. 12/12698 useless extension candidates. Maximal degree in co-relation 93640. Up to 11689 conditions per place. [2024-06-27 18:40:39,816 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 460 selfloop transitions, 91 changer transitions 0/558 dead transitions. [2024-06-27 18:40:39,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 558 transitions, 9213 flow [2024-06-27 18:40:39,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:39,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:39,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-27 18:40:39,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:40:39,818 INFO L175 Difference]: Start difference. First operand has 291 places, 507 transitions, 7532 flow. Second operand 8 states and 184 transitions. [2024-06-27 18:40:39,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 558 transitions, 9213 flow [2024-06-27 18:40:41,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 558 transitions, 8914 flow, removed 75 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:41,672 INFO L231 Difference]: Finished difference. Result has 294 places, 516 transitions, 7583 flow [2024-06-27 18:40:41,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7233, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7583, PETRI_PLACES=294, PETRI_TRANSITIONS=516} [2024-06-27 18:40:41,673 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 242 predicate places. [2024-06-27 18:40:41,673 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 516 transitions, 7583 flow [2024-06-27 18:40:41,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:41,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:41,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:41,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:40:41,673 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:41,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:41,674 INFO L85 PathProgramCache]: Analyzing trace with hash 844976503, now seen corresponding path program 3 times [2024-06-27 18:40:41,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:41,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74356642] [2024-06-27 18:40:41,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:41,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:42,317 INFO 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 18:40:42,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:42,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74356642] [2024-06-27 18:40:42,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74356642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:42,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:42,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:42,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601597302] [2024-06-27 18:40:42,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:42,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:42,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:42,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:42,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:42,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:40:42,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 516 transitions, 7583 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:42,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:42,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:40:42,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:45,585 INFO L124 PetriNetUnfolderBase]: 8446/12888 cut-off events. [2024-06-27 18:40:45,585 INFO L125 PetriNetUnfolderBase]: For 522183/522191 co-relation queries the response was YES. [2024-06-27 18:40:45,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92782 conditions, 12888 events. 8446/12888 cut-off events. For 522183/522191 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 79930 event pairs, 2083 based on Foata normal form. 12/12682 useless extension candidates. Maximal degree in co-relation 92647. Up to 11681 conditions per place. [2024-06-27 18:40:45,731 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 457 selfloop transitions, 92 changer transitions 0/556 dead transitions. [2024-06-27 18:40:45,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 556 transitions, 8979 flow [2024-06-27 18:40:45,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:45,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:45,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-27 18:40:45,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49184782608695654 [2024-06-27 18:40:45,733 INFO L175 Difference]: Start difference. First operand has 294 places, 516 transitions, 7583 flow. Second operand 8 states and 181 transitions. [2024-06-27 18:40:45,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 556 transitions, 8979 flow [2024-06-27 18:40:46,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 556 transitions, 8766 flow, removed 62 selfloop flow, removed 3 redundant places. [2024-06-27 18:40:46,956 INFO L231 Difference]: Finished difference. Result has 299 places, 516 transitions, 7561 flow [2024-06-27 18:40:46,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7370, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7561, PETRI_PLACES=299, PETRI_TRANSITIONS=516} [2024-06-27 18:40:46,957 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 247 predicate places. [2024-06-27 18:40:46,957 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 516 transitions, 7561 flow [2024-06-27 18:40:46,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:46,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:46,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:46,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:40:46,958 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:46,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:46,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1946188416, now seen corresponding path program 3 times [2024-06-27 18:40:46,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:46,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142036440] [2024-06-27 18:40:46,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:46,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:47,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:47,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:47,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142036440] [2024-06-27 18:40:47,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142036440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:47,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:47,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:47,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817196294] [2024-06-27 18:40:47,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:47,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:47,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:47,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:47,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:47,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:40:47,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 516 transitions, 7561 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:47,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:47,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:40:47,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:50,420 INFO L124 PetriNetUnfolderBase]: 8474/12924 cut-off events. [2024-06-27 18:40:50,420 INFO L125 PetriNetUnfolderBase]: For 526415/526457 co-relation queries the response was YES. [2024-06-27 18:40:50,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92969 conditions, 12924 events. 8474/12924 cut-off events. For 526415/526457 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 80609 event pairs, 1881 based on Foata normal form. 29/12733 useless extension candidates. Maximal degree in co-relation 92833. Up to 12054 conditions per place. [2024-06-27 18:40:50,562 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 507 selfloop transitions, 54 changer transitions 0/568 dead transitions. [2024-06-27 18:40:50,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 568 transitions, 9396 flow [2024-06-27 18:40:50,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:50,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:50,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-27 18:40:50,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484472049689441 [2024-06-27 18:40:50,564 INFO L175 Difference]: Start difference. First operand has 299 places, 516 transitions, 7561 flow. Second operand 7 states and 156 transitions. [2024-06-27 18:40:50,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 568 transitions, 9396 flow [2024-06-27 18:40:52,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 568 transitions, 9259 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:52,051 INFO L231 Difference]: Finished difference. Result has 302 places, 527 transitions, 7739 flow [2024-06-27 18:40:52,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7424, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7739, PETRI_PLACES=302, PETRI_TRANSITIONS=527} [2024-06-27 18:40:52,053 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 250 predicate places. [2024-06-27 18:40:52,053 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 527 transitions, 7739 flow [2024-06-27 18:40:52,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:52,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:52,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:52,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:40:52,054 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:52,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:52,055 INFO L85 PathProgramCache]: Analyzing trace with hash -5512432, now seen corresponding path program 4 times [2024-06-27 18:40:52,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:52,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078391441] [2024-06-27 18:40:52,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:52,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:52,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:52,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:52,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078391441] [2024-06-27 18:40:52,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078391441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:52,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:52,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:52,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256020938] [2024-06-27 18:40:52,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:52,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:52,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:52,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:52,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:52,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:40:52,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 527 transitions, 7739 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:52,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:52,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:40:52,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:55,490 INFO L124 PetriNetUnfolderBase]: 8494/12960 cut-off events. [2024-06-27 18:40:55,491 INFO L125 PetriNetUnfolderBase]: For 544551/544593 co-relation queries the response was YES. [2024-06-27 18:40:55,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94157 conditions, 12960 events. 8494/12960 cut-off events. For 544551/544593 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 80875 event pairs, 1870 based on Foata normal form. 29/12766 useless extension candidates. Maximal degree in co-relation 94019. Up to 12075 conditions per place. [2024-06-27 18:40:55,642 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 502 selfloop transitions, 59 changer transitions 0/568 dead transitions. [2024-06-27 18:40:55,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 568 transitions, 9361 flow [2024-06-27 18:40:55,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:55,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:55,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-06-27 18:40:55,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720496894409938 [2024-06-27 18:40:55,643 INFO L175 Difference]: Start difference. First operand has 302 places, 527 transitions, 7739 flow. Second operand 7 states and 152 transitions. [2024-06-27 18:40:55,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 568 transitions, 9361 flow [2024-06-27 18:40:56,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 568 transitions, 9228 flow, removed 56 selfloop flow, removed 2 redundant places. [2024-06-27 18:40:56,915 INFO L231 Difference]: Finished difference. Result has 307 places, 531 transitions, 7805 flow [2024-06-27 18:40:56,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7636, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7805, PETRI_PLACES=307, PETRI_TRANSITIONS=531} [2024-06-27 18:40:56,916 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 255 predicate places. [2024-06-27 18:40:56,916 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 531 transitions, 7805 flow [2024-06-27 18:40:56,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:56,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:56,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:56,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:40:56,917 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:40:56,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:56,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1107698866, now seen corresponding path program 5 times [2024-06-27 18:40:56,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:56,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206755216] [2024-06-27 18:40:56,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:56,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:57,485 INFO 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 18:40:57,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:57,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206755216] [2024-06-27 18:40:57,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206755216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:57,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:57,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:57,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934628012] [2024-06-27 18:40:57,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:57,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:57,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:57,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:57,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:57,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:40:57,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 531 transitions, 7805 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:57,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:57,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:40:57,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:00,569 INFO L124 PetriNetUnfolderBase]: 8491/12954 cut-off events. [2024-06-27 18:41:00,570 INFO L125 PetriNetUnfolderBase]: For 548251/548293 co-relation queries the response was YES. [2024-06-27 18:41:00,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93454 conditions, 12954 events. 8491/12954 cut-off events. For 548251/548293 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 80384 event pairs, 2099 based on Foata normal form. 29/12760 useless extension candidates. Maximal degree in co-relation 93314. Up to 12182 conditions per place. [2024-06-27 18:41:00,729 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 517 selfloop transitions, 35 changer transitions 0/559 dead transitions. [2024-06-27 18:41:00,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 559 transitions, 9217 flow [2024-06-27 18:41:00,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:41:00,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:41:00,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 145 transitions. [2024-06-27 18:41:00,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4503105590062112 [2024-06-27 18:41:00,731 INFO L175 Difference]: Start difference. First operand has 307 places, 531 transitions, 7805 flow. Second operand 7 states and 145 transitions. [2024-06-27 18:41:00,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 559 transitions, 9217 flow [2024-06-27 18:41:02,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 559 transitions, 9129 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-27 18:41:02,011 INFO L231 Difference]: Finished difference. Result has 311 places, 531 transitions, 7793 flow [2024-06-27 18:41:02,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7717, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7793, PETRI_PLACES=311, PETRI_TRANSITIONS=531} [2024-06-27 18:41:02,021 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 259 predicate places. [2024-06-27 18:41:02,021 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 531 transitions, 7793 flow [2024-06-27 18:41:02,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:02,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:02,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:02,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:41:02,022 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:02,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:02,022 INFO L85 PathProgramCache]: Analyzing trace with hash 2071433872, now seen corresponding path program 6 times [2024-06-27 18:41:02,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:02,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500329914] [2024-06-27 18:41:02,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:02,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:02,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:02,669 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 18:41:02,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:02,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500329914] [2024-06-27 18:41:02,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500329914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:02,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:02,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:41:02,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723753360] [2024-06-27 18:41:02,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:02,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:41:02,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:02,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:41:02,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:41:02,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:41:02,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 531 transitions, 7793 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:02,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:02,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:41:02,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:05,656 INFO L124 PetriNetUnfolderBase]: 8488/12953 cut-off events. [2024-06-27 18:41:05,657 INFO L125 PetriNetUnfolderBase]: For 556974/557016 co-relation queries the response was YES. [2024-06-27 18:41:05,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93401 conditions, 12953 events. 8488/12953 cut-off events. For 556974/557016 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 80473 event pairs, 2105 based on Foata normal form. 29/12758 useless extension candidates. Maximal degree in co-relation 93260. Up to 12212 conditions per place. [2024-06-27 18:41:05,824 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 521 selfloop transitions, 27 changer transitions 0/555 dead transitions. [2024-06-27 18:41:05,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 555 transitions, 9015 flow [2024-06-27 18:41:05,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:41:05,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:41:05,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-27 18:41:05,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43788819875776397 [2024-06-27 18:41:05,826 INFO L175 Difference]: Start difference. First operand has 311 places, 531 transitions, 7793 flow. Second operand 7 states and 141 transitions. [2024-06-27 18:41:05,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 555 transitions, 9015 flow [2024-06-27 18:41:07,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 555 transitions, 8914 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 18:41:07,264 INFO L231 Difference]: Finished difference. Result has 314 places, 531 transitions, 7752 flow [2024-06-27 18:41:07,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7692, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7752, PETRI_PLACES=314, PETRI_TRANSITIONS=531} [2024-06-27 18:41:07,265 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 262 predicate places. [2024-06-27 18:41:07,265 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 531 transitions, 7752 flow [2024-06-27 18:41:07,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:07,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:07,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:07,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:41:07,265 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:07,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:07,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1037804396, now seen corresponding path program 5 times [2024-06-27 18:41:07,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:07,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246237833] [2024-06-27 18:41:07,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:07,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:08,467 INFO 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 18:41:08,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:08,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246237833] [2024-06-27 18:41:08,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246237833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:08,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:08,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:41:08,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037362294] [2024-06-27 18:41:08,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:08,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:41:08,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:08,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:41:08,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:41:08,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:41:08,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 531 transitions, 7752 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:08,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:08,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:41:08,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:11,518 INFO L124 PetriNetUnfolderBase]: 8481/12944 cut-off events. [2024-06-27 18:41:11,518 INFO L125 PetriNetUnfolderBase]: For 564603/564630 co-relation queries the response was YES. [2024-06-27 18:41:11,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92901 conditions, 12944 events. 8481/12944 cut-off events. For 564603/564630 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 80799 event pairs, 1606 based on Foata normal form. 26/12737 useless extension candidates. Maximal degree in co-relation 92759. Up to 11393 conditions per place. [2024-06-27 18:41:11,655 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 467 selfloop transitions, 127 changer transitions 0/601 dead transitions. [2024-06-27 18:41:11,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 601 transitions, 9372 flow [2024-06-27 18:41:11,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:11,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:11,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 225 transitions. [2024-06-27 18:41:11,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-06-27 18:41:11,657 INFO L175 Difference]: Start difference. First operand has 314 places, 531 transitions, 7752 flow. Second operand 10 states and 225 transitions. [2024-06-27 18:41:11,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 601 transitions, 9372 flow [2024-06-27 18:41:12,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 601 transitions, 9289 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 18:41:12,871 INFO L231 Difference]: Finished difference. Result has 319 places, 541 transitions, 8149 flow [2024-06-27 18:41:12,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7587, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8149, PETRI_PLACES=319, PETRI_TRANSITIONS=541} [2024-06-27 18:41:12,872 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 267 predicate places. [2024-06-27 18:41:12,872 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 541 transitions, 8149 flow [2024-06-27 18:41:12,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:12,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:12,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:12,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:41:12,873 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:12,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:12,873 INFO L85 PathProgramCache]: Analyzing trace with hash 2085251905, now seen corresponding path program 4 times [2024-06-27 18:41:12,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:12,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567351271] [2024-06-27 18:41:12,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:12,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:12,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:13,666 INFO 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 18:41:13,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:13,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567351271] [2024-06-27 18:41:13,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567351271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:13,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:13,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:13,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021878890] [2024-06-27 18:41:13,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:13,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:13,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:13,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:13,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:13,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:41:13,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 541 transitions, 8149 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:13,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:13,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:41:13,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:16,823 INFO L124 PetriNetUnfolderBase]: 8541/13022 cut-off events. [2024-06-27 18:41:16,823 INFO L125 PetriNetUnfolderBase]: For 584106/584106 co-relation queries the response was YES. [2024-06-27 18:41:16,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95029 conditions, 13022 events. 8541/13022 cut-off events. For 584106/584106 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 80793 event pairs, 2123 based on Foata normal form. 4/12805 useless extension candidates. Maximal degree in co-relation 94884. Up to 12243 conditions per place. [2024-06-27 18:41:16,963 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 537 selfloop transitions, 30 changer transitions 0/574 dead transitions. [2024-06-27 18:41:16,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 574 transitions, 9498 flow [2024-06-27 18:41:16,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:41:16,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:41:16,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-27 18:41:16,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44021739130434784 [2024-06-27 18:41:16,965 INFO L175 Difference]: Start difference. First operand has 319 places, 541 transitions, 8149 flow. Second operand 8 states and 162 transitions. [2024-06-27 18:41:16,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 574 transitions, 9498 flow [2024-06-27 18:41:18,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 574 transitions, 9089 flow, removed 110 selfloop flow, removed 4 redundant places. [2024-06-27 18:41:18,333 INFO L231 Difference]: Finished difference. Result has 324 places, 546 transitions, 7920 flow [2024-06-27 18:41:18,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7740, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7920, PETRI_PLACES=324, PETRI_TRANSITIONS=546} [2024-06-27 18:41:18,334 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 272 predicate places. [2024-06-27 18:41:18,334 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 546 transitions, 7920 flow [2024-06-27 18:41:18,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:18,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:18,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:18,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:41:18,335 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:18,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:18,335 INFO L85 PathProgramCache]: Analyzing trace with hash 2071430245, now seen corresponding path program 5 times [2024-06-27 18:41:18,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:18,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760022059] [2024-06-27 18:41:18,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:18,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:18,999 INFO 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 18:41:19,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:19,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760022059] [2024-06-27 18:41:19,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760022059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:19,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:19,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:19,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921029791] [2024-06-27 18:41:19,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:19,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:19,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:19,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:19,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:19,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:41:19,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 546 transitions, 7920 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:19,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:19,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:41:19,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand